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Message Subject SOLAR WATCH * Huge X8.2 Flare Sept. 10, 2017! (Updated Daily)
Poster Handle Anonymous Coward
Post Content
A new C3.7 flare this morning @ 7:45:
[link to www.swpc.noaa.gov]
from unnumbered region N12E83 just rising from the west: [link to www.lmsal.com]

Which resulted in a Type 2 radio emission warning:

ALERT: Type II Radio Emission
Begin Time: 2012 Apr 24 0748 UTC
Estimated Velocity: 1029 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

According to NOAA @ 22:00 on 4/23:
IA. Analysis of Solar Active Regions and Activity from 22/2100Z
to 23/2100Z: Solar activity has been at low levels for the past 24
hours. There are currently 8 active regions on the disk, with 5
regions having sunspots. The spotted regions on the disk all
remained rather quiet and stable throughout the period. However,
around plage Region 1461 (N10W19), two C-class events were observed
today with associated Earth directed CMEs.
[link to www.swpc.noaa.gov]


Still in the midst of a K5 storm:
[link to www.solarham.com]

and warning extended until noon:
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 767
Valid From: 2012 Apr 23 1725 UTC
Now Valid Until: 2012 Apr 24 1200 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
[link to www.swpc.noaa.gov]

There is a 30% chance of an M class flare today, and storm prediction from NOAA:

VI. Geomagnetic Activity Probabilities 24 Apr-26 Apr
A. Middle Latitudes
Active 40/25/40
Minor storm 15/05/15
Major-severe storm 01/01/01
B. High Latitudes
Active 50/40/50
Minor storm 30/20/30
Major-severe storm 10/05/10
 
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