A few of days ago I was reading something and got the impression that alerts for potential aurora could be had for free from the NOAA Space Weather Prediction Center. Many a time I had visited and used the SPWC, in particular the Space Weather Enthusiasts Dashboard, but I had never decoded the notification system.
I dug a bit deeper on the 4th, learned it was easy, free, created a profile, and registered for a few services.
In the wee hours, an email arrived with "warning" in the subject line. The first aurora notification. Which confirmed I had set things up correctly...
Subject: WARNING: Geomagnetic K-index of 4 expected
Date: 7 Aug 2022 07:53:42 +0000
From: SWPC Product Subscription ServiceSpace Weather Message Code: WARK04
Serial Number: 4061
Issue Time: 2022 Aug 07 0752 UTCWARNING: Geomagnetic K-index of 4 expected
Valid From: 2022 Aug 07 0752 UTC
Valid To: 2022 Aug 07 1800 UTC
Warning Condition: Onset
Happy with this. Hopefully if something big is coming down the pipe, I'll be able to take advantage.
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At 8:04 AM, I received an "alert" message.
Subject: ALERT: Geomagnetic K-index of 4
Date: 7 Aug 2022 12:04:20 +0000
From: SWPC Product Subscription ServiceSpace Weather Message Code: ALTK04
Serial Number: 2281
Issue Time: 2022 Aug 07 1203 UTCALERT: Geomagnetic K-index of 4
Threshold Reached: 2022 Aug 07 1200 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
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Oh ho. Another one. This time, indicating kp-index level 5!
Subject: WARNING: Geomagnetic K-index of 5 (G1)
Date: 7 Aug 2022 14:30:24 +0000
From: SWPC Product Subscription ServiceSpace Weather Message Code: WARK05
Serial Number: 1654
Issue Time: 2022 Aug 07 1429 UTCWARNING: Geomagnetic K-index of 5 expected
Valid From: 2022 Aug 07 1428 UTC
Valid To: 2022 Aug 07 1800 UTC
Warning Condition: Onset
NOAA Scale: G1 - MinorPotential 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.
Once again, I'm rather pleased with how this all works. Thank you, NOAA and SPWC!
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