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
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[140] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2020年10月27日(火)18時38分31秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2176
Issue Time: 2020 Oct 27 0901 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2020 Oct 27 0859 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.




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

投稿者: JH3XCU 投稿日:2020年10月27日(火)18時37分11秒  返信

Space Weather Message Code: WARK04
Serial Number: 3782
Issue Time: 2020 Oct 27 0809 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Oct 27 0808 UTC
Valid To: 2020 Oct 27 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.



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

投稿者: JH3XCU 投稿日:2020年10月27日(火)14時13分44秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3072
Issue Time: 2020 Oct 27 0459 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3071
Begin Time: 2020 Oct 25 1320 UTC
Yesterday Maximum 2MeV Flux: 16463 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.



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

投稿者: JH3XCU 投稿日:2020年10月27日(火)06時33分36秒  返信

Space Weather Message Code: WARK04
Serial Number: 3781
Issue Time: 2020 Oct 26 1454 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3780
Valid From: 2020 Oct 25 1305 UTC
Now Valid Until: 2020 Oct 26 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.



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

投稿者: JH3XCU 投稿日:2020年10月26日(月)17時36分0秒  返信

Space Weather Message Code: WARK04
Serial Number: 3780
Issue Time: 2020 Oct 26 0555 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3779
Valid From: 2020 Oct 25 1305 UTC
Now Valid Until: 2020 Oct 26 1500 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.



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

投稿者: JH3XCU 投稿日:2020年10月26日(月)17時33分55秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3071
Issue Time: 2020 Oct 26 0513 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3070
Begin Time: 2020 Oct 25 1320 UTC
Yesterday Maximum 2MeV Flux: 5669 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.



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

投稿者: JH3XCU 投稿日:2020年10月26日(月)04時39分43秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3070
Issue Time: 2020 Oct 25 1402 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2020 Oct 25 1320 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.



[133] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2020年10月26日(月)04時38分48秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2175
Issue Time: 2020 Oct 25 1326 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2020 Oct 25 1325 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.



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

投稿者: JH3XCU 投稿日:2020年10月26日(月)04時37分51秒  返信

Space Weather Message Code: WARK04
Serial Number: 3779
Issue Time: 2020 Oct 25 1305 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Oct 25 1305 UTC
Valid To: 2020 Oct 26 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.



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

投稿者: JH3XCU. 投稿日:2020年10月24日(土)17時48分14秒  返信

Space Weather Message Code: WARK04
Serial Number: 3778
Issue Time: 2020 Oct 24 0845 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3777
Valid From: 2020 Oct 23 1930 UTC
Now Valid Until: 2020 Oct 24 1500 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.



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

投稿者: JH3XCU 投稿日:2020年10月24日(土)06時38分37秒  返信

Space Weather Message Code: WARK05
Serial Number: 1564
Issue Time: 2020 Oct 23 2055 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2020 Oct 23 2055 UTC
Valid To: 2020 Oct 24 0600 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.



[129] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2020年10月24日(土)06時37分7秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2174
Issue Time: 2020 Oct 23 2054 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2020 Oct 23 2054 UTC
Synoptic Period: 1800-2100 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.



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

投稿者: JH3XCU 投稿日:2020年10月24日(土)04時57分32秒  返信

Space Weather Message Code: WARK04
Serial Number: 3777
Issue Time: 2020 Oct 23 1929 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Oct 23 1930 UTC
Valid To: 2020 Oct 24 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.



[127] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2020年10月21日(水)17時46分13秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2173
Issue Time: 2020 Oct 21 0809 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2020 Oct 21 0808 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.



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

投稿者: JH3XCU 投稿日:2020年10月21日(水)17時44分54秒  返信

Space Weather Message Code: WARK04
Serial Number: 3776
Issue Time: 2020 Oct 21 0746 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Oct 21 0746 UTC
Valid To: 2020 Oct 21 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.



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

投稿者: JH3XCU 投稿日:2020年10月11日(日)04時05分0秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3069
Issue Time: 2020 Oct 10 1739 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2020 Oct 10 1720 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.



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

投稿者: JH3XCU 投稿日:2020年10月 8日(木)03時45分26秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3068
Issue Time: 2020 Oct 07 1503 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2020 Oct 07 1450 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.



[123] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2020年10月 6日(火)15時11分48秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2172
Issue Time: 2020 Oct 06 0602 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2020 Oct 06 0600 UTC
Synoptic Period: 0300-0600 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.



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

投稿者: JH3XCU 投稿日:2020年10月 6日(火)13時34分57秒  返信

Space Weather Message Code: WARK04
Serial Number: 3775
Issue Time: 2020 Oct 06 0431 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Oct 06 0431 UTC
Valid To: 2020 Oct 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.



[121] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2020年10月 6日(火)06時37分25秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2171
Issue Time: 2020 Oct 05 2000 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2020 Oct 05 1949 UTC
Synoptic Period: 1800-2100 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.



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

投稿者: JH3XCU 投稿日:2020年10月 6日(火)06時36分12秒  返信

Space Weather Message Code: WARK04
Serial Number: 3774
Issue Time: 2020 Oct 05 1932 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Oct 05 1932 UTC
Valid To: 2020 Oct 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.



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

投稿者: JH3XCU 投稿日:2020年10月 5日(月)16時13分14秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3067
Issue Time: 2020 Oct 05 0530 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3066
Begin Time: 2020 Sep 24 1540 UTC
Yesterday Maximum 2MeV Flux: 26522 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.



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

投稿者: JH3XCU 投稿日:2020年10月 4日(日)15時38分28秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3066
Issue Time: 2020 Oct 04 0527 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3065
Begin Time: 2020 Sep 24 1540 UTC
Yesterday Maximum 2MeV Flux: 23378 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.



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

投稿者: JH3XCU 投稿日:2020年10月 3日(土)15時24分6秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3065
Issue Time: 2020 Oct 03 0527 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3064
Begin Time: 2020 Sep 24 1540 UTC
Yesterday Maximum 2MeV Flux: 38686 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.



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

投稿者: JH3XCU 投稿日:2020年10月 3日(土)04時21分43秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3064
Issue Time: 2020 Oct 02 1253 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3063
Begin Time: 2020 Sep 24 1540 UTC
Yesterday Maximum 2MeV Flux: 32432 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.



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

投稿者: JH3XCU 投稿日:2020年10月 2日(金)04時00分20秒  返信

Space Weather Message Code: WARK04
Serial Number: 3773
Issue Time: 2020 Oct 01 1413 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3772
Valid From: 2020 Oct 01 1031 UTC
Now Valid Until: 2020 Oct 01 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.



[114] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2020年10月 2日(金)03時59分0秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2170
Issue Time: 2020 Oct 01 1154 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2020 Oct 01 1146 UTC
Synoptic Period: 0900-1200 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.



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

投稿者: JH3XCU 投稿日:2020年10月 2日(金)03時57分48秒  返信

Space Weather Message Code: WARK04
Serial Number: 3772
Issue Time: 2020 Oct 01 1031 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Oct 01 1031 UTC
Valid To: 2020 Oct 01 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.



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

投稿者: JH3XCU 投稿日:2020年10月 1日(木)14時43分2秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3063
Issue Time: 2020 Oct 01 0500 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3062
Begin Time: 2020 Sep 24 1540 UTC
Yesterday Maximum 2MeV Flux: 29294 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.



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

投稿者: JH3XCU 投稿日:2020年 9月30日(水)18時51分7秒  返信

Space Weather Message Code: WARK04
Serial Number: 3771
Issue Time: 2020 Sep 30 0850 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3770
Valid From: 2020 Sep 30 0058 UTC
Now Valid Until: 2020 Sep 30 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.



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

投稿者: JH3XCU 投稿日:2020年 9月30日(水)14時07分31秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3062
Issue Time: 2020 Sep 30 0459 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3061
Begin Time: 2020 Sep 24 1540 UTC
Yesterday Maximum 2MeV Flux: 13676 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.



[109] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2020年 9月30日(水)10時28分50秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2169
Issue Time: 2020 Sep 30 0122 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2020 Sep 30 0122 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.



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

投稿者: JH3XCU 投稿日:2020年 9月30日(水)10時12分1秒  返信   編集済

Space Weather Message Code: WARK04
Serial Number: 3770
Issue Time: 2020 Sep 30 0058 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Sep 30 0058 UTC
Valid To: 2020 Sep 30 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.



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

投稿者: JH3XCU 投稿日:2020年 9月30日(水)04時38分27秒  返信

Space Weather Message Code: WARK04
Serial Number: 3769
Issue Time: 2020 Sep 29 1153 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3768
Valid From: 2020 Sep 27 1920 UTC
Now Valid Until: 2020 Sep 29 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.



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

投稿者: JH3XCU 投稿日:2020年 9月29日(火)14時02分52秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3061
Issue Time: 2020 Sep 29 0459 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3060
Begin Time: 2020 Sep 24 1540 UTC
Yesterday Maximum 2MeV Flux: 15792 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.



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

投稿者: JH3XCU 投稿日:2020年 9月29日(火)09時04分40秒  返信

Space Weather Message Code: WARK05
Serial Number: 1563
Issue Time: 2020 Sep 28 2354 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1562
Valid From: 2020 Sep 27 1935 UTC
Now Valid Until: 2020 Sep 29 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 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.



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

投稿者: JH3XCU 投稿日:2020年 9月29日(火)09時03分39秒  返信

Space Weather Message Code: WARK04
Serial Number: 3768
Issue Time: 2020 Sep 28 2354 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3767
Valid From: 2020 Sep 27 1920 UTC
Now Valid Until: 2020 Sep 29 1200 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.



[103] ALERT: Geomagnetic K-index of 5 (G1)

投稿者: JH3XCU 投稿日:2020年 9月29日(火)07時53分25秒  返信

Space Weather Message Code: ALTK05
Serial Number: 1304
Issue Time: 2020 Sep 28 2224 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2020 Sep 28 2223 UTC
Synoptic Period: 2100-2400 UTC

Active Warning: Yes
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.



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

投稿者: JH3XCU 投稿日:2020年 9月28日(月)17時49分43秒  返信

Space Weather Message Code: WARK04
Serial Number: 3767
Issue Time: 2020 Sep 28 0807 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3766
Valid From: 2020 Sep 27 1920 UTC
Now Valid Until: 2020 Sep 28 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.



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

投稿者: JH3XCU 投稿日:2020年 9月28日(月)17時48分34秒  返信

Space Weather Message Code: WARK05
Serial Number: 1562
Issue Time: 2020 Sep 28 0807 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1561
Valid From: 2020 Sep 27 1935 UTC
Now Valid Until: 2020 Sep 28 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 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.



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

投稿者: JH3XCU 投稿日:2020年 9月28日(月)17時47分34秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3060
Issue Time: 2020 Sep 28 0801 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3059
Begin Time: 2020 Sep 24 1540 UTC
Yesterday Maximum 2MeV Flux: 16737 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.



[99] ALERT: Geomagnetic K-index of 5 (G1)

投稿者: JH3XCU 投稿日:2020年 9月28日(月)15時13分14秒  返信

Space Weather Message Code: ALTK05
Serial Number: 1303
Issue Time: 2020 Sep 28 0549 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2020 Sep 28 0548 UTC
Synoptic Period: 0300-0600 UTC

Active Warning: Yes
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.



[98] ALERT: Geomagnetic K-index of 6 (G2)

投稿者: JH3XCU 投稿日:2020年 9月28日(月)09時26分57秒  返信

Space Weather Message Code: ALTK06
Serial Number: 476
Issue Time: 2020 Sep 28 0001 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2020 Sep 27 2359 UTC
Synoptic Period: 2100-2359 UTC

Active Warning: Yes
NOAA Scale: G2 - Moderate

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

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.



[97] WARNING: Geomagnetic K-index of 6 (G2)

投稿者: JH3XCU 投稿日:2020年 9月28日(月)08時27分5秒  返信

Space Weather Message Code: WARK06
Serial Number: 438
Issue Time: 2020 Sep 27 2323 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2020 Sep 27 2322 UTC
Valid To: 2020 Sep 28 0900 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate

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

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.



[96] ALERT: Geomagnetic K-index of 5 (G1)

投稿者: JH3XCU 投稿日:2020年 9月28日(月)05時42分9秒  返信

Space Weather Message Code: ALTK05
Serial Number: 1302
Issue Time: 2020 Sep 27 2019 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2020 Sep 27 2019 UTC
Synoptic Period: 1800-2100 UTC

Active Warning: Yes
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.



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

投稿者: JH3XCU 投稿日:2020年 9月28日(月)04時45分39秒  返信

Space Weather Message Code: WARK05
Serial Number: 1561
Issue Time: 2020 Sep 27 1936 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2020 Sep 27 1935 UTC
Valid To: 2020 Sep 28 0900 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.



[94] ALERT: Geomagnetic K-index of 4

投稿者: JH3XCU 投稿日:2020年 9月28日(月)04時37分58秒  返信

Space Weather Message Code: ALTK04
Serial Number: 2168
Issue Time: 2020 Sep 27 1933 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2020 Sep 27 1933 UTC
Synoptic Period: 1800-2100 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.



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

投稿者: JH3XCU 投稿日:2020年 9月28日(月)04時34分51秒  返信

Space Weather Message Code: WARK04
Serial Number: 3766
Issue Time: 2020 Sep 27 1918 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2020 Sep 27 1920 UTC
Valid To: 2020 Sep 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.



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

投稿者: JH3XCU 投稿日:2020年 9月27日(日)14時18分43秒  返信

Space Weather Message Code: ALTEF3
Serial Number: 3059
Issue Time: 2020 Sep 27 0503 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3058
Begin Time: 2020 Sep 24 1540 UTC
Yesterday Maximum 2MeV Flux: 3802 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.



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

投稿者: JH3XCU 投稿日:2020年 9月27日(日)05時32分56秒  返信

Space Weather Message Code: WARK04
Serial Number: 3765
Issue Time: 2020 Sep 26 1738 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 3764
Valid From: 2020 Sep 25 0425 UTC
Now Valid Until: 2020 Sep 27 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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