Viewing archive of Monday, 12 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 12 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 317 Issued at 2200Z on 12 Nov 2012IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C2 event observed at
12/1022Z from Region 1610 (S22W10). There are currently 8 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be at low to
moderate levels on days one, two, and three (13 Nov, 14 Nov, 15 Nov).
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
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 362 km/s at
12/0605Z. Total IMF reached 12 nT at 12/0724Z. The maximum southward
component of Bz reached -8.1 nT at 12/1934Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at mostly active with a chance for minor storm levels early on day
one (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 2
(14 Nov) as CME effects subside. On day 3 (15 Nov) conditions are
expected to return to mostly quiet levels.
III. Event Probabilities 13 Nov to 15 Nov
| Class M | 35% | 35% | 35% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 12 Nov 144 Predicted 13 Nov-15 Nov 145/145/150 90 Day Mean 12 Nov 118
V. Geomagnetic A Indices
Observed Afr/Ap 11 Nov 002/002 Estimated Afr/Ap 12 Nov 005/008 Predicted Afr/Ap 13 Nov-15 Nov 013/015-007/010-006/005
VI. Geomagnetic Activity Probabilities 13 Nov to 15 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 20% | 05% |
| Minor storm | 25% | 05% | 01% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 15% |
| Minor storm | 25% | 30% | 10% |
| Major-severe storm | 05% | 25% | 05% |
All times in UTC
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