Solar activity was a bit lower this week. Seven new sunspot groups appeared. The only day with no new sunspot...
Weather
by Sierra Harrop, W5DX ARRL The National Association for Amateur Radio® encourages all amateur stations to prepare for what the...
Big increase in solar activity this week, with average daily sunspot number rising from 129 to 215.9, and solar flux...
New sunspot groups, nine in all, emerged on every day of this reporting week, July 4 to 10. One on...
Solar activity increased this week, with average daily sunspot numbers rising from 149.6 to 181.6. For some reason average daily...
Amateur Radio is active to provide critical communications for those in the path of Hurricane Beryl. The following information is...
We had another lucky week with quite a high solar flux index, low Kp geomagnetic numbers, few solar flares and...
Sunspot numbers rose this week, with the average changing from 139.4to 149.6, but average daily solar flux only shifted from...
This reporting week (May 30 to June 5) our Sun was active, with ninenew sunspot groups.One emerged on May 30,...
A potent solar storm is on its way to Earth, and could cause radio blackouts and dazzling displays of the...
SB PROP ARL ARLP020 ARLP020 Propagation de K7RA Solar activity was quiet this week. Average daily sunspot number slipped from...
Aurora Propagation, Northern Lights The sun has been busy, and it’s been a mixed bag for radio amateurs. Earlier this...
CanWarn, Radio Amateurs of Canada’s national severe weather preparedness program, is an important initiative. It equips volunteers with free storm...
Like a lot of meteorologists, Nick Petro’s fascination with the weather began early in his childhood. Today, as the warning...
"ASWFC GEOMAGNETIC DISTURBANCE WARNING ISSUED AT 2302 UTC/09 MAY 2024 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE. "Four halo CMEs...
On May 1, an extremely powerful solar flare occurred on the Sun, which led to a large-scale radio blackout throughout the Pacific...
"ASWFC GEOMAGNETIC DISTURBANCE WARNING ISSUED 1817 UTC/02 MAY 2024 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE. "A period of planetary...
Strong storms and reports of at least 60 tornadoes have wreaked havoc in the Central U.S. for nearly two weeks....
When I read the Kansas House had overwhelmingly voted in favor of a nonbinding resolution urging Congress to require automakers...
Colorado State University (CSU) hurricane researchers predict an active Atlantic hurricane season (June 1 to November 30) in their initial...
I did not see last Monday's eclipse, except on television. Here in the Pacific Northwest, we only got a 20%...
With the big increase in sunspot numbers and solar flux reported inlast week's Propagation Forecast Bulletin ARLP013, I hoped the...
In one of nature's most spectacular visual displays, on April 8, 2024, the sun will align with the moon and...
Over March 14-20, new sunspot groups emerged every day except March19. March 18 had two, and each of the other...
Until March 6, new sunspot groups emerged daily over the past reporting week, February 29 through March 6. One new...
