Viewing archive of Friday, 22 April 2011

The operational data in the graph above has been modified to remove the scaling factor that has been applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor in the operational data, flare indices for the operational data were reported as 42% smaller than for the science quality data. The scaling factor has also been removed from the solar flare list to reflect the true physical units.
The archive is not available for this date.

All times in UTC

<< Go to daily overview page

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Edmonton, AB, Gillam, MB, Saskatoon, SK
The solar wind speed is currently moderately high (682.7 km/sec.)

Latest news

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

Donate SpaceWeatherLive Pro
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

01:00 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 00:55 UTC

alert


Friday, 2 May 2025
23:30 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 23:20 UTC

alert


18:15 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 17:59 UTC

alert


14:45 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 14:35 UTC

alert


05:15 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 04:59 UTC

alert


Get instant alerts!

Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/30M2.03
Last geomagnetic storm2025/05/02Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
April 2025140.6 +6.4
May 202548.5 -92.1
Last 30 days116.9 -13.6

This day in history*

Solar flares
12024X1.6
22022X1.1
32013M8.19
42023M7.2
51999M6.41
DstG
11967-123G3
21978-114G3
31976-107G4
41994-79G2
51977-77G1
*since 1994

Social networks