Tag: weather

Surprisingly strong geomagnetic storm

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 [su_button url=”http://www.southgatearc.org/news/2017/september/surprisingly-strong-geomagnetic-storm.htm”]Original Article[/su_button]

Geomagnetic storm predicted

NOAA forecasters say there is a 65% chance of polar geomagnetic storms on Sept. 27th, increasing to 80% on Sept. 28th, as a stream of high-speed solar wind buffets our planet’s magnetic field [su_button url=”http://www.southgatearc.org/news/2017/september/geomagnetic-storm-predicted.htm”]Original Article[/su_button]

Moderate Geomagnetic Storm Watch Issued

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…

Caribbean Emergency and Weather Net Requests Clear Frequencies

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…

Solar flare causes ‘Ground Level Event’

Sunday’s powerful X8-class solar flare from departing sunspot AR2673 accelerated a swarm of protons toward Earth, producing a strong solar radiation storm and a ‘ground level event’ (GLE) For the full article, http://www.southgatearc.org/news/2017/september/solar-flare-causes-ground-level-event.htm [su_button url=”http://www.southgatearc.org/news/2017/september/solar-flare-causes-ground-level-event.htm”]Original Article[/su_button]

Hurricane Irma – Florida radio hams requested to help

ARRL West Central Florida Section Manager Darrell Davis, KT4WX, reports that Amateur Radio Emergency Service (ARES) teams have been requested to provide communication support at evacuation shelters in Highlands, Hillsborough, and Polk counties [su_button url=”http://www.southgatearc.org/news/2017/september/hurricane-irma-florida-radio-hams-requested-to-help.htm”]Original Article[/su_button]

Update on Hurricanes Irma, Jose and Katia

Radio Amateurs of Canada is monitoring the progress of the storms in the Caribbean and any necessary Amateur response [su_button url=”http://www.southgatearc.org/news/2017/september/update-on-hurricanes-irma-jose-and-katia.htm”]Original Article[/su_button]

Geomagnetic storm warning

A CME has just hit Earth’s magnetic field (Sept. 7th at ~2300 UT). This is the debris from Wednesday’s decade-class X9 solar flare [su_button url=”http://www.southgatearc.org/news/2017/september/geomagnetic-storm-warning.htm”]Original Article[/su_button]

A solar storm is coming

Yesterday, during a flurry of M-class solar flares, sunspot AR2673 hurled a CME toward Earth [su_button url=”http://www.southgatearc.org/news/2017/september/a-solar-storm-is-coming.htm”]Original Article[/su_button]

Big sunspots facing Earth

Behemoth AR2674 has been growing for days, while newcomer AR2673 has suddenly quadrupled in size [su_button url=”http://www.southgatearc.org/news/2017/september/big-sunspots-facing-earth.htm”]Original Article[/su_button]

September 2 – this day in history

The solar storm of 1859 (also known as the Carrington Event)[1] was a powerful geomagnetic solar storm during solar cycle 10 (1855–1867). A solar coronal mass ejection hit… [su_button url=”https://forums.qrz.com/index.php?threads/september-2-this-day-in-history.579928/”]Original Article[/su_button]

NASA’s Johnson Space Center closes for Tropical Storm Harvey

NASA’s Johnson Space Center in Houston will remain closed to all but mission essential personnel through Labor Day due to the effects of now-Tropical Storm Harvey. The center originally closed Aug. 25 and will reopen Tuesday, Sept. 5 [su_button url=”http://www.southgatearc.org/news/2017/august/johnson-space-center-closes-for-tropical-storm-harvey.htm”]Original Article[/su_button]

Geomagnetic storm in the offing

A canyon-shaped hole has opened in the sun’s atmosphere, and it is spewing a stream of high-speed solar wind toward Earth [su_button url=”http://www.southgatearc.org/news/2017/august/geomagnetic-storm-in-the-offing.htm”]Original Article[/su_button]

Propagation de K7RA – Aug 26

All solar indicators rose over the past week (August 17 to 23), with average daily sunspot number increasing from 15.3 to 39.9, and average daily solar flux from 72 to 84.6, compared to the previous seven days [su_button url=”http://www.southgatearc.org/propagation/k7ra/index.htm”]Original Article[/su_button]

Emergency and Weather Net activated

The ARRL report the Caribbean Emergency and Weather Net (CEWN) activated this week on 3.815 MHz for Tropical Storm Harvey, located in the Eastern Caribbean [su_button url=”http://www.southgatearc.org/news/2017/august/emergency-and-weather-net-activated.htm”]Original Article[/su_button]

Propagation de K7RA

At 0549 UTC on August 3 the Australian Space Forecast Centre issued this warning: During UT days 4-5 August expect an increase in geomagnetic activity up to active to minor storm levels due to influence of the recurrent coronal hole For the full article, http://www.southgatearc.org/propagation/k7ra/index.htm

The K7RA Solar Update

At 0549 UTC on August 3 the Australian Space Forecast Centre issued this warning: “During UT days 4-5 August expect an increase in geomagnetic activity up to active to minor storm levels due to influence of the recurrent coronal hole. INCREASED GEOMAGNETIC ACTIVITY EXPECTED DUE TO CORONAL HOLE HIGH SPEED WIND STREAM FROM 04-05 AUGUST…