See below! 73!
Bill Priakos – W5SJ/4
19417 Gulf Boulevard
Indian Shores, FL 33785
479.461.8368
STRONG GEOMAGNETIC STORM PREDICTED: A CME hurled into space by Saturday's X4.5-class solar flare will graze Earth
on Sept. 16th, according to a NASA model. NOAA forecasters are predicting a strong G3-class
geomagnetic storm when the CME arrives. During G3 storms, auroras can sometimes be seen with the naked eye from mid-latitudes--e.g., as far south as California,
Missouri and Colorado in the USA. On Sept. 16th, however, bright moonlight could mitigate the display. Aurora alerts: SMS Text
SIGNIFICANT X-CLASS SOLAR FLARE: New sunspot AR3825 erupted on Sept. 14th, producing a very strong X4.5-class solar
flare. NASA's Solar Dynamics Observatory recorded the extreme ultraviolet flash:
Click to view a movie of the flare
Radiation from the flare ionized the top of Earth's atmosphere, resulting in a deep shortwave radio blackout over South America and the mid-Atlantic Ocean: map.
Ham radio operators and mariners may have noticed loss of signal at frequencies below 30 MHz for as much as 30 minutes after the flare's peak (1529 UTC).
The explosion also hurled a CME into space, and a
NASA model confirms that it has an Earth-directed component. Strong G3-class geomagnetic storms are possible when the CME grazes Earth on Sept. 16th. Solar
flare alerts: SMS Text
more images: from
Warren Spreng of Mason, Ohio; from Thierry Legault of Paris, France; from
Steve Godbout of Quebec City, Quebec; from Cindy Braunheim at Ginko State Park in Vantage, Washington;
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Solar wind
speed: 472.6 km/sec
density: 1.30 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 1206 UT
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X-ray Solar Flares
6-hr max: C2 0610 UT Sep16
24-hr: C5 0125 UT Sep16
explanation | more data
Updated: Today at: 1210 UT
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Daily Sun: 16 Sep 24
Expand: labels | no
labels | Carrington
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New sunspots are emerging at the circled locations. Credit: SDO/HMI
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Sunspot number: 68
What is the sunspot number?
Updated 16 Sep 2024