Knowing that a solar wind stream was heading for Earth, forecasters predicted a geomagnetic storm last night. However, they didn’t predict it would be so strong, a G3-class event
The Hurricane Watch Net (HWN) suspended operations for Hurricanes Irma, José, and Katia on September 11 at 2100 UTC, after being continuously active for more than 6 days, said HWN Manager Bobby Graves, KB5HAV. Now, Hurricane José, a Category 1 storm, is the sole storm in the HWN’s sights.
“We remain at Alert Level 2 — Monitoring Mode,” Graves said. “People along the US East Coast should closely monitor this storm, as they could possibly be affected early next week.”
The National Oceanic and Atmospheric Administration’s Space Weather Prediction Center (SWPC) has issued a moderate (G2) geomagnetic storm watch for September 13. A coronal hole high-speed stream, originating from a recurrent, positive polarity coronal hole on the Sun’s surface, prompted the prediction. Minor (G1) geomagnetic storming is possible on September 14.
It’s been a turbulent time on the…
For the full article, http://www.arrl.org/news/view/moderate-geomagnetic-storm-watch-issued
With the passage of Hurricane Irma, radio amateurs in the Eastern Caribbean have been extremely busy passing information into and out of the affected area, Eric Mackie, 9Z4CP, told ARRL.
“The Caribbean Emergency and Weather Net (CEWN) has been facilitating this exercise,” Mackie said. “We have however, been experiencing QRM from stateside stations from time to time.”
Mackie said the CEWN is askin…
The Space Weather Prediction Center (SWPC) said today that G4 (Severe) geomagnetic storm levels were observed at 2350 UTC on September 7 and again at 0151 UTC and 1304 UTC on September 8, due to the effects of a coronal mass ejection (CME). A G3 (Strong) or greater warning was in effect until 1500 UTC today.
Solar flares have adversely affected HF nets attempting to gather information on the thr…
NOAA’s Space Weather Prediction Center (SWPC) has issued a strong (G3) geomagnetic storm watch for September 7 through September 9. The SWPC said the watch for September 7 remains in effect due to the arrival of a coronal mass ejection (CME) and the effects of a CME on September 4.
“Additionally, a G3 watch is now in effect for the 8 and 9 September UTC days in anticipation of the arrival of ano…