This reporting week (May 30 to June 5) our Sun was active, with ninenew sunspot groups.One emerged on May 30,...
solar flux
SB PROP ARL ARLP020 ARLP020 Propagation de K7RA Solar activity was quiet this week. Average daily sunspot number slipped from...
"ASWFC GEOMAGNETIC DISTURBANCE WARNING ISSUED AT 2302 UTC/09 MAY 2024 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE. "Four halo CMEs...
"ASWFC GEOMAGNETIC DISTURBANCE WARNING ISSUED 1817 UTC/02 MAY 2024 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE. "A period of planetary...
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...
A dramatic increase in solar activity emerged over the past week, and geomagnetic activity reacted as well. Two new sunspot...
Over March 14-20, new sunspot groups emerged every day except March19. March 18 had two, and each of the other...
Six new sunspot groups appeared over the past reporting week, March7-13, and one more on March 14.The first group emerged...
Until March 6, new sunspot groups emerged daily over the past reporting week, February 29 through March 6. One new...
"ASWFC GEOMAGNETIC DISTURBANCE WARNING ISSUED AT 2208 UTC/29 FEBRUARY 2024 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE. "A filament eruption...
Seven new sunspot groups appeared over the past week, February 8-14,two on February 8, three on February 10, and two...
Over the recent reporting week, February 1-7, ten new sunspot groupsemerged, five on February 1, one on February 2, another...
"ASWFC GEOMAGNETIC DISTURBANCE WARNING ISSUED AT 0248 UTC/02 FEBRUARY 2024 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE. "A CME was...
Just four new sunspot groups emerged this reporting week, January 18-24, one on each day, January 18-21. But it looks...
Solar activity increased substantially over the past week, with twelve new sunspot groups. One appeared on January 11, five more...
Eight new sunspot groups emerged over this reporting week, January4-10.Four new sunspot groups appeared on January 5, another two onJanuary...
The recent reporting week, December 21-27, saw counter-intuitive solar numbers, with solar flux rising but sunspot numbers in decline. This...
The Winter Solstice, the shortest day of the year in the NorthernHemisphere occurred at 0327 UTC on December 22. It...
"GEOMAGNETIC DISTURBANCE WARNING ISSUED AT 0132 UTC ON 15 DECEMBER 2023 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE. "Two predominately...
Six new sunspot groups emerged over this reporting week (November 30to December 6).Last week, using the previous week's Propagation Forecast...
"GEOMAGNETIC DISTURBANCE WARNING 23/74 ISSUED AT 2321UT/29 NOVEMBER 2023 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE. "Several CMEs are expected...
Geomagnetic conditions were very quiet last weekend, good conditionsfor the ARRL Phone Sweepstakes. But there was much more geomagneticactivity toward...
"ASWFC GEOMAGNETIC DISTURBANCE WARNING ISSUED AT 2306 UTC 16 NOVEMBER 2023 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE."Two recent CMEs...
"ASWFC GEOMAGNETIC DISTURBANCE WARNING ISSUED AT 2310 UTC/09 NOVEMBER 2023 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE:"G1-G2 geomagnetic conditions are...
