Event ID: A30F

Issued On: 09/30/2022 18:04:06 UTC

Space Weather Message Code: WATA30
Serial Number: 209
Issue Time: 2022 Sep 30 1804 UTC

WATCH: Geomagnetic Storm Category G2 Predicted

Highest Storm Level Predicted by Day:
Oct 01: G2 (Moderate) Oct 02: G1 (Minor) Oct 03: 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 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.

Event ID: K04W

Issued On: 09/30/2022 13:46:04 UTC

Space Weather Message Code: WARK04
Serial Number: 4120
Issue Time: 2022 Sep 30 1346 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2022 Sep 30 1345 UTC
Valid To: 2022 Oct 01 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.

Event ID: K04A

Issued On: 09/30/2022 05:56:38 UTC

Space Weather Message Code: ALTK04
Serial Number: 2299
Issue Time: 2022 Sep 30 0556 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2022 Sep 30 0556 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.

Event ID: MSIS

Issued On: 09/30/2022 05:32:38 UTC

Space Weather Message Code: SUMSUD
Serial Number: 240
Issue Time: 2022 Sep 30 0532 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2022 Sep 30 0519 UTC
Deviation: 20 nT
Station: CNB

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

Event ID: K04W

Issued On: 09/30/2022 05:02:56 UTC

Space Weather Message Code: WARK04
Serial Number: 4119
Issue Time: 2022 Sep 30 0502 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2022 Sep 30 0505 UTC
Valid To: 2022 Sep 30 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.