Solar storm warning:

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‘Significant’ radio and GPS issues are expected within hours, according to the Met Office.A SOLAR storm is expected to hit Earth in the next 36 hours, causing radio and GPS problems, according to experts.The Met Office and the National Oceanic and Atmospheric Administration (NOAA) have both detected a powerful coronal mass ejection (CME) from the Sun that will “graze” the Earth, according to the agencies.A space weather physicist, Dr. Tamitha Skov, has warned that this could result in amateur radio blackouts and GPS problems.

A space weather physicist, Dr. Tamitha Skov, has warned that this could result in amateur radio blackouts and GPS problems. “Our Sun sends a Thanksgiving Holiday gift,” she tweeted.

“A solar storm that began yesterday, according to NOAA and the Met Office, will graze Earth to the south late November 27.“A sporadic aurora is possible at mid-latitudes, but it’s unlikely to be a big storm.” “On Earth’s nightside, expect radio and GPS problems.” “Satellite systems may experience significant charging,” according to NOAA, “resulting in increased risk to satellite systems.”

“First-look data suggest it might deliver a glancing blow to Earth’s magnetic field,” according to On Wednesday, a filament of magma burst out of a 50,000-mile-long canyon on the Sun, creating towering walls of red-hot plasma.

A coronal mass ejection (CME) formed by debris from the blast, which is a large expulsion of plasma and magnetic field from the Sun’s outer layer that can cause a geomagnetic storm.

When a geomagnetic storm collides with the Earth’s atmosphere, it can cause havoc. “A geomagnetic storm is a major disturbance of Earth’s magnetosphere that occurs when there is a very efficient exchange of energy from the solar wind into the space environment surrounding Earth,” according to astronomers at

“These storms are caused by variations in the solar wind, which cause major changes in the Earth’s magnetosphere’s currents, plasmas, and fields.”

CMEs are the most powerful type of geomagnetic storm, sending a stream of electrical charges and magnetic fields as far as the earth at speeds of up to three million miles per hour.

Even the lowest-intensity G1 storm, which we might see tomorrow, can cause major disruption if it collides with a satellite.

When this happens, satellite operations may be disrupted, and power grid fluctuations may occur.

However, lucky spectators who aren’t accustomed to seeing auroras may be treated to spectacular displays during these geomagnetic storms.

Forecasters predicted this earlier this month.

K7RA Solar report

The K7RA Solar Update

Tad Cook, K7RA, Seattle, reports: New sunspots appeared on November 14 and 16, but solar activity was lower, and geomagnetic activity was lower as well.

Average daily sunspot numbers declined from 36.4 last week to 30.9 in the November 11 – 17 reporting week. Solar flux averages were off as well, dipping to to 80.8 this week compared to 89.1 last week.

Average daily planetary A index declined from 18 to 7, and average middle latitude numbers went from 11.7 to 4.9. Middle latitude A index daily average went all the way down to zero on November 13.

We see no high numbers in the solar flux prediction, which has 78 on November 18 – 20; 80 on November 21 – 24; 83 on November 25; 85 on November 26 – 27; 83 on November 28 – 29; 85 on November 30 – December 2; 82 on December 3 – 11; 79, 80, and 79 on December 12 – 14; 78, 77, 79, and 81 on December 15 – 18; 83 on December 19 – 21, and 85 on December 22 – 24.

Predicted planetary A index is a quiet 5 on November 18 – 20; then 12 and 8 on November 21 – 22; 5 on November 23 – 27; 10, 10, and 8 on November 28 – 30; 5 on December 1 – 12; 12 on December 13 – 14, and back to 5 on December 15 – 24.

Sunspot numbers for November 11 – 17 were 39, 39, 24, 23, 23, 35, and 33, with a mean of 30.9. The 10.7-centimeter flux was 84.5, 82.9, 81, 78.7, 79.3, 80.1, and 79.2, with a mean of 80.8. Estimated planetary A indices were 4, 4, 3, 4, 9, 13, and 12, with a mean of 7. Middle latitude A index was 3, 3, 0, 2, 6, 11, and 9, with a mean of 4.9.

A comprehensive K7RA Solar Update is posted Fridays on the ARRL website. For more information concerning radio propagation, visit the ARRL Technical Information Service, read “What the Numbers Mean…,” and check out the Propagation Page of Carl Luetzelschwab, K9LA. A propagation bulletin archive is available. For customizable propagation charts, visit the VOACAP Online for Ham Radio website

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Beginning Sunday Nov. 7th the weekly Sunday night informational net will be held. If you are a licensed amateur radio operator please tune in to 145.47 and participate. Discussion will be held as to the current operation of the repeater and other repeater activities. Tune in at 8:00 pm. See you on the net!

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