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2333
2331
2327
2325

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(<24h)
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(<72h)
M1.1

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Flares
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01. X6.9
02. X5.4
03. X4.9
04. X3.3
05. X3.2
06. X3.1
07. X2.8
08. X2.3
09. X2.2
10. X2.2


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The Sun Today : Updated April 25, 2015

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Solar Flare Risk
M-Class: 10%
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Geomag. Storm    NO
Radiation Storm    NO

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3-Day Geomagnetic Forecast [Details]
April 25
April 26
April 27
4 (G0)
Max Kp
3 (G0)
Max Kp
3 (G0)
Max Kp
Prob-M 05%
Prob-H 35%
Prob-M 05%
Prob-H 25%
Prob-M 05%
Prob-H 25%

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SolarHam is a website all about the Sun and how it affects Earth. It is also an Amateur (Ham) Radio website.

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April 24, 2015 @ 13:20 UTC
Solar Update
Good morning. Below is an updated look at the visible solar disk on Friday (April 24). Solar activity declined to low levels with only minor C-Flares detected from behind the west limb. Activity should continue at quieter levels in the short term with only a small chance for an isolated M-Flare. The coronal mass ejection (CME) observed on Thursday originating from behind the west limb was directed away from Earth. Stay tuned to SolarHam.com for the latest information.

April 23, 2015 @ 14:40 UTC
Solar Update / Flaring Behind West Limb (UPDATED)
Good morning. Below is an updated look at the visible solar disk on Thursday. Solar activity during the past 24 hours reached moderate levels. Sunspot 2322 now located behind the west limb, was responsible for a long duration M1.1 solar flare peaking at 10:07 UTC (Apr 23). The peak strength was likely larger than what the X-Ray sensor detected due to source region being out of direct view. The event was associated with a Type II radio emission with an estimated velocity of 664 km/s. Updated imagery by SDO/AIA using the 193 angstroms channel suggests a coronal mass ejection (CME) is likely. More updates once coronagraph imagery becomes available. Elsewhere, region 2326 reformed towards the northwest limb and is producing C-Class flares. All other regions are fairly stable. There will remain a chance for an isolated M-Flare. Stay tuned to SolarHam.com for the latest data and imagery.

CME Update: Updated coronagraph imagery courtesy of LASCO reveals a coronal mass ejection (CME) following a moderate to strong solar flare early Thursday morning behind the west limb around AR 2322. As expected, the plasma cloud is heading to the west and away from Earth. A noteworthy impact to our geomagnetic field is not expected.


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REPORTS AND FORECAST | 30 Day DSD | Data Warehouse


Prepared jointly by the U.S. Dept. of Commerce, NOAA,
Space Weather Prediction Center and the U.S. Air Force.
UPDATED 2015 April 25 1230 UTC

.24 hr Summary...
Solar activity was low this period.  Multiple C1 flares were observed
throughout the period.  Region 2331 (S10W40, Dai/beta-gamma) exhibited
development in its trailer spot area while the remaining four active
regions on the visible disk were generally stable.

Two disappearing filaments were observed in GONG H-Alpha imagery this
period.  The first, a 21 degree long filament centered near S22E19,
disappeared between 25/0209-0359 UTC.  The second, a 12 degree long
filament centered near S20W32, disappeared between 25/0359-0557 UTC. 
Both disappearing filaments were non-eruptive and appeared to have been
reabsorbed.  No Earth-directed coronal mass ejections (CMEs) were
observed this period.
   
.Forecast...
Solar activity is expected to be low with a slight chance for M-class
(R1-Minor) flares over the next three days (25-27 Apr).



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NOAA SUNSPOT SUMMARY | SolarHam Sunspot Summary

A - Alpha (single polarity spot).
B - Beta (bipolar spot configuration).
G - Gamma (atypical mixture of polarities).
BG - Beta-Gamma (mixture of polarities in a dominantly bipolar configuration).
D - Delta (opposite polarity umbrae within single penumbra).
BD - Beta with a Delta configuration.
BGD - Beta-Gamma with a Delta configuration.

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