Viewing archive of Wednesday, 3 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 03 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 93 Issued at 2200Z on 03 Apr 2013IA. Analysis of Solar Active Regions and Activity from 02-2100Z to 03-2100Z 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
03/0943Z from Region 1708 (N10W11). There are currently 7 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be low with a
slight chance for an M-class flare on days one, two, and three (04 - 06
Apr).
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
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 371 km/s at
03/0122Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 3798 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one and two (04 Apr, 05 Apr) and quiet to
unsettled levels on day three (06 Apr).
III. Event Probabilities 04 Apr to 06 Apr
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 03 Apr 127 Predicted 04 Apr-06 Apr 130/130/130 90 Day Mean 03 Apr 115
V. Geomagnetic A Indices
Observed Afr/Ap 02 Apr 004/003 Estimated Afr/Ap 03 Apr 003/004 Predicted Afr/Ap 04 Apr-06 Apr 006/005-006/005-009/008
VI. Geomagnetic Activity Probabilities 04 Apr to 06 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 10% | 20% | 15% |
All times in UTC
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