Solar activity reached moderate levels due to an isolated M1.5/1nflare on March 19 at 2040 UTC from Region AR4031. Regions...
sunspots
Geomagnetic field activity is expected to be at minor storm levels for March 18, and then from March 27 and...
Spaceweather.com is reporting "A Hole In The Sun's Atmosphere" thatshould reach Earth on March 9 and 10. Solar activity has...
A Coronal Mass Ejection (CME) associated with a filament eruptionbecame visible on February 26 at 1448 UTC. Model analysisdetermined this...
Solar activity is expected to range from low to moderate levelsthrough March 15. There is a varying chance for R1...
NOAA reports a G1 (Minor) geomagnetic Storm Watch has been issuedfor 14 Feb, 2025. A coronal hole high speed stream...
Spaceweather.com reports that sunspot 3981 has produced more than 20M-class solar flares, including two that almost reached category X. The...
Solar Update Report January 30, 2025 The sun has been moderately active this past week. The greater than 2 MeV...
Last week was pretty unremarkable as far as the Sun goes, but it looks like that is about to change....
Sorry to say this is the last ARRL Propagation Forecast Bulletin Iwill write. I took over in 1991 from Ed...
Solar activity was a bit weak during recent days. Average dailysunspot number was 159.1. During the previous week the average...
Currently a geomagnetic storm is raging. On January 1-2, Alaska'scollege A index reached 113. Predicted planetary A index is 12...
Strong solar activity continues, with worldwide propagation on 10and 12 meters quite commonplace. Predicted solar flux is 255, 250, 210,...
Excellent HF conditions greeted hams in the ARRL 10-Meter contestlast weekend. Recent indicators show a sudden shift to two digitdaily...
Average daily sunspot number plummeted to 104.4. Weekly Commentary on the Sun, the Magnetosphere, and the Earth's Ionosphere for December...
Solar activity seems to have dropped dramatically from a recent peak. Are we over the cycle peak and headed down...
ARRL Headquarters was closed on November 29. So, this regular Fridaybulletin was moved to the following Monday (12/2). Solar activity...
Solar activity was lower this reporting week, November 14-20, withthe average daily sunspot number down from 141.6 to 99.3, and...
Tap or click the link below to download this week’s news script News script for 17 November 2024 (MS Word...
Only five new sunspot groups emerged this week. First was onNovember 7, next on November 9, two more on November...
Tap or click the link below to download this week’s news script News script for 10 November 2024 (MS Word...
Solar activity increased this week. Average daily sunspot number went from 127.7 to 197.4 and average solar flux from 170.5...
Average daily sunspot numbers changed from 160 to 129.3 and averagedaily solar flux from 261.3 to 194.3. Geomagnetic numbers werehigher,...
ASWFC GEOMAGNETIC DISTURBANCE WARNING ISSUED AT 0042UT/04 OCTOBER 2024 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE. Two coronal mass ejections...
Solar activity was quiet over the past week, but geomagnetic numberswere way, way up. Average daily sunspot numbers dropped from...
