November 18, 2015

Space Weather Message Code: ALTK05

Issue Time: 6:09 PM

ALERT: Geomagnetic K-index of 5 (minor storm).

Intensity Reached: 6:08 PM

Active Warning: Yes

NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.

Latitude Range: South of Alaska. Also cuts through Canada and Russia.

Induced Currents - Weak changes in power grids.

Spacecraft - Minor impact on satellite operations possible.

Aurora - Aurora may be visible at high latitudes such as northern Michigan and Maine.

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Space Weather Message Code: WARK05

Issue Time: 5:52 PM

WARNING: Geomagnetic K-index of 5 expected

Valid From: 6:00 PM

Valid To: 2:00 AM

NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.

Latitude Range: South of Alaska. Also cuts through Canada and Russia.

Induced Currents - Weak changes in power grids.

Spacecraft - Minor impact on satellite operations possible.

Aurora - Aurora may be visible at high latitudes such as northern Michigan and Maine.

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Space Weather Message Code: ALTK04

Issue Time: 5:07 PM

ALERT: Geomagnetic K-index of 4

Intensity Reached: 5:07 PM

Active Warning: Yes

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.

Latitude Range: Alaska to parts of Russia.

Induced Currents - Weak changes in power grids.

Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

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Space Weather Message Code: WARK04

Issue Time: 4:00 PM

WARNING: Geomagnetic K-index of 4 expected

Valid From: 4:00 PM

Valid To: 5:00 PM

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.

Latitude Range: Alaska to parts of Russia.

Induced Currents - Weak changes in power grids.

Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

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