Viewing archive of Saturday, 6 April 2013
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 2013 Apr 06 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 96 Issued at 2200Z on 06 Apr 2013IA. Analysis of Solar Active Regions and Activity from 05-2100Z to 06-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C1 event observed at
06/1142Z from Region 1718 (N22E33). There are currently 7 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (07 Apr, 08 Apr,
09 Apr).
IIA. Geophysical Activity Summary 05-2100Z to 06-2100Z
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 379 km/s at
06/1415Z. Total IMF reached 8 nT at 06/0305Z. The maximum southward
component of Bz reached -6 nT at 06/0517Z. Electrons greater than 2 MeV
at geosynchronous orbit reached a peak level of 1473 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one, two, and three (07 Apr,
08 Apr, 09 Apr).
III. Event Probabilities 07 Apr to 09 Apr
| Class M | 30% | 30% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 06 Apr 137 Predicted 07 Apr-09 Apr 138/138/135 90 Day Mean 06 Apr 114
V. Geomagnetic A Indices
Observed Afr/Ap 05 Apr 003/002 Estimated Afr/Ap 06 Apr 005/006 Predicted Afr/Ap 07 Apr-09 Apr 007/008-006/008-008/008
VI. Geomagnetic Activity Probabilities 07 Apr to 09 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 15% |
| Minor storm | 30% | 30% | 30% |
| Major-severe storm | 30% | 30% | 25% |
All times in UTC
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