72-Hour Aurora Forecast - Apr 22-24

30% probability for KP6/G2 Aurora forecast for April 23 +/-24hrs

Cause: April 21 Coronal Mass Ejection (CME) associated with a filament eruption

The geomagnetic field is expected to be quiet to unsettled until late on 23 Apr or early on 24 Apr with the arrival of the 21 Apr CME. G1 (Minor) storm levels are likely with the onset of CME activity followed by G1-G2 (Minor-Moderate) geomagnetic storm conditions on 24 Apr with the CME passage.
- Space Weather Prediction Centre

Expectations KP6 Aurora can be 100's of kms long over Alberta, can often be seen throughout the province and may be possible to see from urban skies

• Timing: 30% probability for KP6 April 23 +/- 24 hours

• Locations: anywhere in Alberta with clear skies away from urban areas.

Edmonton Latitudes

• KP4 can be seen halfway up the northern sky, approaching overhead

• KP5/G1 can be seen overhead

• KP6/G2 can be seen overhead and possibly under urban skies

Calgary Latitudes

• KP4 can be halfway up the northern sky

• KP5/G1 can approach overhead

• KP6/G2 can be seen overhead and possibly under urban skies

In the Mountains

• KP4 Aurora may not be high enough to be visible over the mountains

• KP5/G1 can peek over the mountain tops

• KP6/G2 can be seen overhead

Lethbridge Latitudes

• KP4 Aurora may be visible on the northern horizon

• KP5/G1 can can be halfway up the northern sky

• KP6/G2 can be seen overhead

Etiquette

• If you're in an area with a lot of people, there will be cars with headlights on; don't let it upset you.

• If you're parking in a place with a lot of people, try to turn your headlights off if possible

• Drive carefully, park your car fully off the road

• Stay off of private property

Forecast sources

https://services.swpc.noaa.gov/text/3-day-geomag-forecast.txt

https://services.swpc.noaa.gov/text/discussion.txt

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