Geomagnetic field activity is expected to be at minor storm levels for March 18, and then from March 27 and...
ionosphere
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....
Release Date: January 18, 2025 Here is a summary of the news trending…This Week in Amateur Radio. This week's edition...
This is a 1-hour version of the weekly podcast for This Week in Amateur Radio. For the full version please...
Sorry to say this is the last ARRL Propagation Forecast Bulletin Iwill write. I took over in 1991 from Ed...
Release Date: January 11, 2025 Here is a summary of the news trending…This Week in Amateur Radio. This week's edition...
This is a 1-hour version of the weekly podcast for This Week in Amateur Radio. For the full version please...
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...
How do you collect a lot of data about the ionosphere? Well, you could use sounding rockets or specialized gear....
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...
Solar activity increased this week. Average daily sunspot number went from 127.7 to 197.4 and average solar flux from 170.5...
