May 6, 2026

This Week in Amateur Radio

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Via the ARRL: The K7RA Solar Update

“ASWFC GEOMAGNETIC DISTURBANCE WARNING ISSUED AT 2208 UTC/29 FEBRUARY 2024 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

“A filament eruption was observed at 28/0855UT from the solar
southeast quadrant. The associated CME has been determined to
contain an Earth-directed component, with an arrival to Earth’s
magnetosphere at 02/1100 UTC +/- 12 hours. G1 geomagnetic conditions
are expected.

“INCREASED GEOMAGNETIC ACTIVITY EXPECTED DUE TO CORONAL MASS EJECTION FROM 02-03 MARCH 2024.”

Seven new sunspot groups emerged this week, four on February 23, one
on February 25, another on February 26 and one more on February 28.

Solar activity increased this reporting week, February 22-28,
compared to the week before. Average daily sunspot number rose from
84.4 to 108.4, and solar flux from 164 to 175.

Geomagnetic conditions were quiet, though the numbers rose.
Planetary A index went from 4.4 to 8.4, and middle latitude numbers
from 3.3 to 7.4.

The predicted solar flux is 160, 155, and 160 on March 1-3, 165 on
March 4-5, 160 and 165 on March 6-7, 165 on March 8-9, 168 on March
10, then 165 on March 11-12, 160 on March 13-14, then 168 and 172 on
March 15-16, then 175, 175 and 178 on March 17-19, 180 on March
20-24, and 175 on March 25-26, then 180 and 175 on March 27-28, 170
on March 29-30, 172 on March 31 to April 1, 170 on April 2, and 165
on April 3-5.

The predicted planetary A index is 8, 12, 12 and 10 on March 1-4,
then 5 on March 5-23, then 15, 12 and 12 on March 24-26, and 5 on
March 27 to mid-April.

Read more – via American Radio Relay League | Ham Radio Association and Resources http://www.arrl.org/news/view/the-k7ra-solar-update-819