Solar Flare Watch Thread
There is one Sunspot on the Earth Facing side of the Sun: Number 1117 has recently been observed without telescopic aid. It is quite large and has a cluster formation. Sunspot number is 32.
After a short period of relative quiet, Earth encountered some ionizing radiation from a C4-class flare, generated from active region 1112 on the Sun's far-side - but on the Eastern horizon, so this Sunspot is expected to make another Earth-facing passage soon.
Two sunspots are currently facing Earth; including Sunspot 1120. Sunspot number is 29.
8th November. Quieting down. Sunspot number is 34.
9th November: X-ray flux = B1. Sunspot 1121 decaying (still has potential for M-class flares). Sunspot number 36.
10th November: X-ray Flux = B6 Max B9. Sunspots 1121 and 1122 are facing Earth. Sunspot number is 35.
11th November: X-ray Flux = Max C4-Flare. Three Sunspots on the Earth-facing side of the Sun; 1121, 1123 and 1124. Sunspot number is 55.
12th November: C4-Class flare. Two Sunspots, 1123 and 1124 facing Earth. Sunspot number is 55.
15th November: X-ray flux B8. Two Sunspots on the Earth facing side of the Sun; (group) 1024 and 1026. Sunspot number is 69.
16th November: X-ray flux B2. Two Sunspots on the Earth facing side of the Sun; group 1024, and 1026. New Sunspot emerging. Sunspot number is 62.
Space Weather Message Code: SUMX01?Serial Number: 68?Issue Time: 2011 Feb 15 0246 UTC??
SUMMARY: X-ray Event exceeded X1
?Begin Time: 2011 Feb 15 0144 UTC
?Maximum Time: 2011 Feb 15 0156 UTC
?End Time: 2011 Feb 15 0206 UTC
?X-ray Class: X2.2
?NOAA Scale: R3 – Strong
NOAA rating for R3:
HF Radio: Wide area blackout of HF radio communication, loss of radio contact for about an hour on sunlit side of Earth.
Navigation: Low-frequency navigation signals degraded for about an hour.
175 per cycle?(140 days per cycle
Sun unleashes huge solar flare
The Sun has unleashed its strongest flare in four years, observers say.