Via the ARRL: The K7RA Solar Update

“ASWFC GEOMAGNETIC DISTURBANCE WARNING ISSUED AT 2302 UTC/09 MAY 2024 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

“Four halo CMEs first observed over 08-09 May are expected to arrive
at Earth on 10-May, starting at 1000 UTC +/- 10 hours. G4
geomagnetic conditions are expected on 10-May, reducing to G3 with a
chance of G4 on 11-May.

“INCREASED GEOMAGNETIC ACTIVITY EXPECTED DUE TO CORONAL MASS EJECTION FROM 10-12 MAY 2024.

“GEOMAGNETIC ACTIVITY FORECAST:

“10 May: G4
11 May: G3, chance of G4
12 May: G1”

Six new sunspot groups appeared this reporting week, May 2-8, one
each day on May 2-4, two on May 5 and another on May 6. On May 9 two
more sunspot groups emerged, and the daily sunspot number rose to
170.

Average daily sunspot number increased from 124.6 to 138.3, and
average daily solar flux rose from 144.9 to 177.6.

Average daily planetary A index climbed from 9.6 to 14.4, while
middle latitude numbers went from 8.6 to 12.3.

The most active day was May 2, when the planetary A index was 44.
Alaska’s College A index was 61. The cause was two CMEs striking
Earth, causing a G3 class geomagnetic storm.

The solar flux is peaking now and may peak again around June 11-12
at 205.

Read more – via American Radio Relay League | Ham Radio Association and Resources http://www.arrl.org/news/view/the-k7ra-solar-update-829