Viewing archive of Thursday, 12 March 2009
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 2009 Mar 12 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 071 Issued at 2200Z on 12 Mar 2009IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z Solar activity was very low. No flares were detected.
The visible disk was spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
Geomagnetic field activity was at quiet to unsettled levels.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to increase to unsettled to active levels during days 1 - 2
(13 - 14 March) with a chance for minor to major storm periods at
high latitudes due to a recurrent coronal hole high-speed stream.
Field activity is expected to decrease to mostly quiet levels on day
3 (15 March).
III. Event Probabilities 13 Mar to 15 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 12 Mar 070 Predicted 13 Mar-15 Mar 070/070/070 90 Day Mean 12 Mar 070
V. Geomagnetic A Indices
Observed Afr/Ap 11 Mar 002/003 Estimated Afr/Ap 12 Mar 005/005 Predicted Afr/Ap 13 Mar-15 Mar 012/015-010/010-005/005
VI. Geomagnetic Activity Probabilities 13 Mar to 15 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 10% |
| Minor storm | 10% | 10% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 15% |
| Minor storm | 20% | 20% | 05% |
| Major-severe storm | 05% | 05% | 01% |
All times in UTC
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