Viewing archive of Sunday, 11 November 2012
Solar activity report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Report of Solar-Geophysical Activity 2012 Nov 11 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 316 Issued at 2200Z on 11 Nov 2012IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
11/0233Z from newly numbered Region 1614(N15E72). There were two other
newly numbered regions on the disk as well: 1613 (S21E57) and 1615
(N09E61). A non-earth directed CME was observed off of the southwest
limb on LASCO C2 imagery at 10/2224Z and was associated with the
eruption of a large prominence. There are currently 7 numbered sunspot
regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be at low
with a chance for moderate levels on days one, two, and three (12 Nov,
13 Nov, 14 Nov).
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 352 km/s at
11/2010Z. Total IMF reached 5.4 nT at 11/1104Z. The maximum southward
component of Bz reached -5.2 nT at 11/1150Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be initially quiet but is expected to become mostly active with a
chance for minor storm levels beginning about mid-day on day 1 (12 Nov)
and partway into day 2 (13 Nov) due to the arrival of the CMEs from
09/1524Z and 10/0539Z. Activity is expected to decrease to generally
unsettled levels on day 3 (14 Nov).
III. Event Probabilities 12 Nov to 14 Nov
| Class M | 35% | 35% | 35% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 11 Nov 133 Predicted 12 Nov-14 Nov 135/140/145 90 Day Mean 11 Nov 117
V. Geomagnetic A Indices
Observed Afr/Ap 10 Nov 001/002 Estimated Afr/Ap 11 Nov 004/004 Predicted Afr/Ap 12 Nov-14 Nov 017/030-013/015-007/010
VI. Geomagnetic Activity Probabilities 12 Nov to 14 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 35% | 05% |
| Minor storm | 20% | 25% | 01% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 30% | 15% |
| Minor storm | 25% | 25% | 10% |
| Major-severe storm | 55% | 05% | 05% |
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