Viewing archive of Thursday, 7 March 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 Mar 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 66 Issued at 2200Z on 07 Mar 2013IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z
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
07/1644Z from Region 1686 (S12W84). There are currently 6 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for a C-class flares and a slight chance for an M-class
flare on day one (08 Mar) and likely to be low with a slight chance for
an M-class flare on days two and three (09 Mar, 10 Mar).
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
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 359 km/s at
07/1415Z. Total IMF reached 6 nT at 06/2357Z. The maximum southward
component of Bz reached -4 nT at 07/0901Z. Electrons greater than 2 MeV
at geosynchronous orbit reached a peak level of 4400 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and three (08 Mar, 10
Mar) and quiet levels on day two (09 Mar).
III. Event Probabilities 08 Mar to 10 Mar
| Class M | 10% | 20% | 20% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Mar 114 Predicted 08 Mar-10 Mar 112/118/120 90 Day Mean 07 Mar 115
V. Geomagnetic A Indices
Observed Afr/Ap 06 Mar 004/003 Estimated Afr/Ap 07 Mar 003/004 Predicted Afr/Ap 08 Mar-10 Mar 006/008-006/005-007/008
VI. Geomagnetic Activity Probabilities 08 Mar to 10 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 20% |
| Minor storm | 05% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 15% | 25% |
| Major-severe storm | 25% | 10% | 25% |
All times in UTC
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