ALERT, WARNING




[0] ALERT, WARNING

投稿者: JH3XCU 投稿日:2020年 5月19日(火)10時40分46秒 

ALERT WARNING
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
ftp://ftp.swpc.noaa.gov/pub/alerts/current_month.html
ftp://ftp.swpc.noaa.gov/pub/alerts/previous_month.html
書き込み通知メールは送信されません.





[211] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2021年 1月12日(火)11時21分37秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2185
Issue Time: 2021 Jan 12 0151 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021 Jan 12 0151 UTC
Synoptic Period: 0000-0300 UTC

Active Warning: Yes

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.




[210] WARNING: Geomagnetic K-index of 4 expected

投稿者: JH3XCU 投稿日:2021年 1月12日(火)10時08分9秒  返信

Space Weather Message Code: WARK04
Serial Number: 3804
Issue Time: 2021 Jan 12 0105 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021 Jan 12 0105 UTC
Valid To: 2021 Jan 12 0900 UTC
Warning Condition: Onset

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[209] WARNING: Geomagnetic K-index of 4 expected

投稿者: JH3XCU 投稿日:2021年 1月12日(火)06時42分36秒  返信

Space Weather Message Code: WARK04
Serial Number: 3803
Issue Time: 2021 Jan 11 1754 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3802
Valid From: 2021 Jan 11 1330 UTC
Now Valid Until: 2021 Jan 11 2359 UTC
Warning Condition: Persistence

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[208] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2021年 1月12日(火)06時41分42秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2184
Issue Time: 2021 Jan 11 1506 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021 Jan 11 1459 UTC
Synoptic Period: 1500-1800 UTC

Active Warning: Yes

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[207] WARNING: Geomagnetic K-index of 4 expected

投稿者: JH3XCU 投稿日:2021年 1月12日(火)06時40分42秒  返信

Space Weather Message Code: WARK04
Serial Number: 3802
Issue Time: 2021 Jan 11 1329 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021 Jan 11 1330 UTC
Valid To: 2021 Jan 11 1800 UTC
Warning Condition: Onset

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[206] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2021年 1月 6日(水)18時03分24秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2183
Issue Time: 2021 Jan 06 0802 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021 Jan 06 0801 UTC
Synoptic Period: 0600-0900 UTC

Active Warning: Yes

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[205] WARNING: Geomagnetic K-index of 4 expected

投稿者: JH3XCU 投稿日:2021年 1月 6日(水)15時46分52秒  返信

Space Weather Message Code: WARK04
Serial Number: 3801
Issue Time: 2021 Jan 06 0529 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021 Jan 06 0530 UTC
Valid To: 2021 Jan 06 1200 UTC
Warning Condition: Onset

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[204] WARNING: Geomagnetic K-index of 5 (G1)

投稿者: JH3XCU 投稿日:2021年 1月 6日(水)06時31分49秒  返信

Space Weather Message Code: WARK05
Serial Number: 1569
Issue Time: 2021 Jan 05 1414 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2021 Jan 05 1414 UTC
Valid To: 2021 Jan 05 1800 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.



[203] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2021年 1月 6日(水)06時30分42秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2182
Issue Time: 2021 Jan 05 1356 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2021 Jan 05 1348 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[202] WARNING: Geomagnetic K-index of 4 expected

投稿者: JH3XCU 投稿日:2021年 1月 6日(水)06時29分29秒  返信

Space Weather Message Code: WARK04
Serial Number: 3800
Issue Time: 2021 Jan 05 1338 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2021 Jan 05 1339 UTC
Valid To: 2021 Jan 06 0300 UTC
Warning Condition: Onset

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[201] WATCH: Geomagnetic Storm Category G1 Predicted

投稿者: JH3XCU 投稿日:2021年 1月 4日(月)06時12分0秒  返信

Space Weather Message Code: WATA20
Serial Number: 879
Issue Time: 2021 Jan 03 2044 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Jan 04:  None (Below G1)   Jan 05:  None (Below G1)   Jan 06:  G1 (Minor)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.



[200] ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

投稿者: JH3XCU 投稿日:2020年12月28日(月)05時07分52秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3093
Issue Time: 2020 Dec 27 1331 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3092
Begin Time: 2020 Dec 24 1605 UTC
Yesterday Maximum 2MeV Flux: 1007 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.



[199] ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

投稿者: JH3XCU 投稿日:2020年12月27日(日)06時21分24秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3092
Issue Time: 2020 Dec 26 1657 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3091
Begin Time: 2020 Dec 24 1605 UTC
Yesterday Maximum 2MeV Flux: 1525 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.



[198] ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

投稿者: JH3XCU 投稿日:2020年12月25日(金)22時39分35秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3091
Issue Time: 2020 Dec 25 1327 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3090
Begin Time: 2020 Dec 24 1605 UTC
Yesterday Maximum 2MeV Flux: 1539 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.



[197] CANCELLED WATCH: Geomagnetic Storm Category G1 Predicted

投稿者: JH3XCU 投稿日:2020年12月25日(金)06時46分27秒  返信

Space Weather Message Code: WATA20
Serial Number: 878
Issue Time: 2020 Dec 24 2102 UTC

CANCEL WATCH: Geomagnetic Storm Category G1 Predicted
Cancel Serial Number: 877
Original Issue Time: 2020 Dec 22 1818 UTC

Comment: Conditions no longer warrent this Watch.

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.



[196] ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

投稿者: JH3XCU 投稿日:2020年12月25日(金)06時44分37秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3090
Issue Time: 2020 Dec 24 1624 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2020 Dec 24 1605 UTC
Station: GOES16


NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.



[195] WARNING: Geomagnetic K-index of 4 expected

投稿者: JH3XCU 投稿日:2020年12月25日(金)06時43分7秒  返信

Space Weather Message Code: WARK04
Serial Number: 3799
Issue Time: 2020 Dec 24 1555 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Dec 24 1553 UTC
Valid To: 2020 Dec 24 2359 UTC
Warning Condition: Onset

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[194] WARNING: Geomagnetic K-index of 5 (G1)

投稿者: JH3XCU 投稿日:2020年12月23日(水)13時46分19秒  返信

Space Weather Message Code: WARK05
Serial Number: 1568
Issue Time: 2020 Dec 23 0433 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2020 Dec 23 0432 UTC
Valid To: 2020 Dec 23 1200 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.



[193] WARNING: Geomagnetic K-index of 4 expected

投稿者: JH3XCU 投稿日:2020年12月23日(水)13時45分15秒  返信

Space Weather Message Code: WARK04
Serial Number: 3798
Issue Time: 2020 Dec 23 0433 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3797
Valid From: 2020 Dec 21 2220 UTC
Now Valid Until: 2020 Dec 23 1800 UTC
Warning Condition: persistence

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[192] WARNING: Geomagnetic K-index of 4 expected

投稿者: JH3XCU 投稿日:2020年12月23日(水)05時57分39秒  返信

Space Weather Message Code: WARK04
Serial Number: 3797
Issue Time: 2020 Dec 22 2055 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3796
Valid From: 2020 Dec 21 2220 UTC
Now Valid Until: 2020 Dec 23 0600 UTC
Warning Condition: persistence

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[191] WATCH: Geomagnetic Storm Category G1 Predicted

投稿者: JH3XCU 投稿日:2020年12月23日(水)04時50分22秒  返信

Space Weather Message Code: WATA20
Serial Number: 877
Issue Time: 2020 Dec 22 1818 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Dec 23:  G1 (Minor)   Dec 24:  G1 (Minor)   Dec 25:  None (Below G1)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.



[190] WARNING: Geomagnetic K-index of 4 expected

投稿者: JH3XCU 投稿日:2020年12月23日(水)04時49分9秒  返信

Space Weather Message Code: WARK04
Serial Number: 3796
Issue Time: 2020 Dec 22 1455 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3795
Valid From: 2020 Dec 21 2220 UTC
Now Valid Until: 2020 Dec 22 2100 UTC
Warning Condition: persistence

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[189] WARNING: Geomagnetic K-index of 4 expected

投稿者: JH3XCU 投稿日:2020年12月22日(火)15時02分23秒  返信

Space Weather Message Code: WARK04
Serial Number: 3795
Issue Time: 2020 Dec 22 0554 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3794
Valid From: 2020 Dec 21 2220 UTC
Now Valid Until: 2020 Dec 22 1500 UTC
Warning Condition: Onset

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[188] WARNING: Geomagnetic K-index of 5 (G1)

投稿者: JH3XCU 投稿日:2020年12月22日(火)08時30分43秒  返信

Space Weather Message Code: WARK05
Serial Number: 1567
Issue Time: 2020 Dec 21 2322 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2020 Dec 21 2320 UTC
Valid To: 2020 Dec 22 0300 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.



[187] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2020年12月22日(火)08時29分14秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2181
Issue Time: 2020 Dec 21 2314 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2020 Dec 21 2311 UTC
Synoptic Period: 2100-2400 UTC

Active Warning: Yes

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[186] WARNING: Geomagnetic K-index of 4 expected

投稿者: JH3XCU 投稿日:2020年12月22日(火)08時27分52秒  返信

Space Weather Message Code: WARK04
Serial Number: 3794
Issue Time: 2020 Dec 21 2220 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Dec 21 2220 UTC
Valid To: 2020 Dec 22 0600 UTC
Warning Condition: Onset

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[185] WATCH: Geomagnetic Storm Category G1 Predicted

投稿者: JH3XCU 投稿日:2020年12月21日(月)06時08分39秒  返信

Space Weather Message Code: WATA20
Serial Number: 876
Issue Time: 2020 Dec 20 2104 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Dec 21:  None (Below G1)   Dec 22:  None (Below G1)   Dec 23:  G1 (Minor)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.



[184] ALERT: Type II Radio Emission

投稿者: JH3XCU 投稿日:2020年12月15日(火)08時43分5秒  返信

Space Weather Message Code: ALTTP2
Serial Number: 1077
Issue Time: 2020 Dec 14 1541 UTC

ALERT: Type II Radio Emission
Begin Time: 2020 Dec 14 1437 UTC
Estimated Velocity: 606 km/s

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.



[183] CANCELLED WATCH: Geomagnetic Storm Category G1 Predicted

投稿者: JH3XCU 投稿日:2020年12月11日(金)21時07分10秒  返信

Space Weather Message Code: WATA20
Serial Number: 875
Issue Time: 2020 Dec 11 1157 UTC

CANCEL WATCH: Geomagnetic Storm Category G1 Predicted
Cancel Serial Number: 874
Original Issue Time: 2020 Dec 10 1634 UTC

Comment: G1 (Minor) conditions are no longer expected.

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.



[182] WATCH: Geomagnetic Storm Category G1 Predicted

投稿者: JH3XCU 投稿日:2020年12月11日(金)05時11分2秒  返信

Space Weather Message Code: WATA20
Serial Number: 874
Issue Time: 2020 Dec 10 1634 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Dec 10:  G1 (Minor)   Dec 11:  G1 (Minor)   Dec 12:  None (Below G1)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.



[181] SUMMARY: Geomagnetic Sudden Impulse

投稿者: JH3XCU 投稿日:2020年12月10日(木)14時18分9秒  返信

Space Weather Message Code: SUMSUD
Serial Number: 226
Issue Time: 2020 Dec 10 0447 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2020 Dec 10 0211 UTC
Deviation: 30 nT
Station: BOU

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation



[180] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2020年12月10日(木)12時03分44秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2180
Issue Time: 2020 Dec 10 0300 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2020 Dec 10 0259 UTC
Synoptic Period: 0000-0300 UTC

Active Warning: Yes

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[179] WARNING: Geomagnetic K-index of 4 expected

投稿者: JH3XCU 投稿日:2020年12月10日(木)11時45分50秒  返信

Space Weather Message Code: WARK04
Serial Number: 3793
Issue Time: 2020 Dec 10 0218 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Dec 10 0217 UTC
Valid To: 2020 Dec 10 1200 UTC
Warning Condition: Onset

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[178] WATCH: Geomagnetic Storm Category G3 Predicted

投稿者: JH3XCU 投稿日:2020年12月 9日(水)10時14分25秒  返信

Space Weather Message Code: WATA50
Serial Number: 64
Issue Time: 2020 Dec 08 1506 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Dec 09: G1 (Minor) Dec 10: G3 (Strong) Dec 11: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.



[177] WATCH: Geomagnetic Storm Category G1 Predicted

投稿者: JH3XCU 投稿日:2020年12月 9日(水)10時13分36秒  返信

Space Weather Message Code: WATA20
Serial Number: 873
Issue Time: 2020 Dec 08 1003 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Dec 09: G1 (Minor) Dec 10: G1 (Minor) Dec 11: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.



[176] SUMMARY: 10cm Radio Burst

投稿者: JH3XCU 投稿日:2020年12月 9日(水)10時12分33秒  返信

Space Weather Message Code: SUM10R
Serial Number: 713
Issue Time: 2020 Dec 07 1718 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2020 Dec 07 1642 UTC
Maximum Time: 2020 Dec 07 1643 UTC
End Time: 2020 Dec 07 1651 UTC
Duration: 9 minutes
Peak Flux: 180 sfu
Latest Penticton Noon Flux: 91 sfu
www.swpc.noaa.gov/noaa-scales-explanation
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.



[175] ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

投稿者: JH3XCU 投稿日:2020年12月 4日(金)08時04分53秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3089
Issue Time: 2020 Dec 03 1438 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3088
Begin Time: 2020 Dec 02 1455 UTC
Yesterday Maximum 2MeV Flux: 1529 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.



[174] ALERT: Type II Radio Emission

投稿者: JH3XCU 投稿日:2020年12月 3日(木)18時16分7秒  返信

Space Weather Message Code: ALTTP2
Serial Number: 1076
Issue Time: 2020 Dec 03 0303 UTC

ALERT: Type II Radio Emission
Begin Time: 2020 Dec 03 0153 UTC
Estimated Velocity: 190 km/s

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.



[173] ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

投稿者: JH3XCU 投稿日:2020年12月 3日(木)05時39分22秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3088
Issue Time: 2020 Dec 02 1504 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2020 Dec 02 1455 UTC
Station: GOES-16


NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.



[172] ALERT: Type II Radio Emission

投稿者: JH3XCU 投稿日:2020年11月30日(月)06時14分20秒  返信

Space Weather Message Code: ALTTP2
Serial Number: 1075
Issue Time: 2020 Nov 29 1326 UTC

ALERT: Type II Radio Emission
Begin Time: 2020 Nov 29 1257 UTC
Estimated Velocity: 765 km/s

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.



[171] ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

投稿者: JH3XCU 投稿日:2020年11月30日(月)06時12分41秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3087
Issue Time: 2020 Nov 29 1044 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3086
Begin Time: 2020 Nov 23 1225 UTC
Yesterday Maximum 2MeV Flux: 1673 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.



[170] ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

投稿者: JH3XCU 投稿日:2020年11月28日(土)23時13分46秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3086
Issue Time: 2020 Nov 28 1247 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3085
Begin Time: 2020 Nov 23 1225 UTC
Yesterday Maximum 2MeV Flux: 2310 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.



[169] WARNING: Geomagnetic K-index of 4 expected

投稿者: JH3XCU 投稿日:2020年11月28日(土)13時52分4秒  返信

Space Weather Message Code: WARK04
Serial Number: 3792
Issue Time: 2020 Nov 28 0426 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Nov 28 0425 UTC
Valid To: 2020 Nov 28 1200 UTC
Warning Condition: Onset

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.



[168] ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

投稿者: JH3XCU 投稿日:2020年11月28日(土)05時28分45秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3085
Issue Time: 2020 Nov 27 1212 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3084
Begin Time: 2020 Nov 23 1225 UTC
Yesterday Maximum 2MeV Flux: 1803 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.



[167] ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

投稿者: JH3XCU 投稿日:2020年11月27日(金)04時57分17秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3084
Issue Time: 2020 Nov 26 1422 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3083
Begin Time: 2020 Nov 23 1225 UTC
Yesterday Maximum 2MeV Flux: 2329 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.



[166] ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

投稿者: JH3XCU 投稿日:2020年11月25日(水)21時30分19秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3083
Issue Time: 2020 Nov 25 0902 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3082
Begin Time: 2020 Nov 23 1225 UTC
Yesterday Maximum 2MeV Flux: 2376 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.



[165] ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

投稿者: JH3XCU 投稿日:2020年11月24日(火)14時20分47秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3082
Issue Time: 2020 Nov 24 0500 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3081
Begin Time: 2020 Nov 23 1225 UTC
Yesterday Maximum 2MeV Flux: 2400 pfu

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.



[164] ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

投稿者: JH3XCU 投稿日:2020年11月24日(火)04時08分11秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3081
Issue Time: 2020 Nov 23 1241 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2020 Nov 23 1225 UTC
Station: GOES16


NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.



[163] WARNING: Geomagnetic K-index of 5 (G1)

投稿者: JH3XCU 投稿日:2020年11月23日(月)03時46分44秒  返信

Space Weather Message Code: WARK05
Serial Number: 1566
Issue Time: 2020 Nov 22 1751 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1565
Valid From: 2020 Nov 22 1358 UTC
Now Valid Until: 2020 Nov 23 0300 UTC
Warning Condition: Persistence

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.



[162] WARNING: Geomagnetic K-index of 4 expected

投稿者: JH3XCU 投稿日:2020年11月23日(月)03時45分9秒  返信

Space Weather Message Code: WARK04
Serial Number: 3791
Issue Time: 2020 Nov 22 1717 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3790
Valid From: 2020 Nov 21 2053 UTC
Now Valid Until: 2020 Nov 23 0900 UTC
Warning Condition: Persistence

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


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