Mon 29 Nov 2021 05:12 MST

Edmonton Weather

Mainly Clear
Condition: Mainly Clear
Temperature: -2.5°C
Pressure: 101.3 kPa rising
Visibility: 32.2 km
Humidity: 89 %
Wind Chill: -7
Dewpoint: -4.0°C
Wind: SSW 13 km/h
Air Quality Health Index: N/A
Observed at: Edmonton Int'l Airport 04:00 AM MST Monday 29 November 2021
Courtesy of Environment Canada

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Athabasca U. All Sky Image (BETA)

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Has the CME arrived yet (Oct 30, 2021)? Print E-mail
Saturday, 30 October 2021

The solar wind (particles that constantly stream outward from the sun) has a typical speed of 400 km/s. A coronal mass ejection (CME—the emission from the sun that causes Aurora) typically has a speed of 1000-2000 km/s.

The ACE satellite sits 1.4M km sunward from Earth, measuring the solar wind speed. You can see the data here: ACE SWEPAM DATA. The yellow trace shows the current solar wind speed and when this rapidly increases well above 400 km/s then the CME is 15 minutes away!

Last Updated ( Saturday, 30 October 2021 )
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