Viewing archive of Saturday, 20 March 2010
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 2010 Mar 20 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 079 Issued at 2200Z on 20 Mar 2010IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z Solar activity was very low. Region 1054 (N16W82) has
decayed to an Axx Alpha spot and has been quiet. Region 1056
(N18E07) remains stable and quiet as a Bxo Beta region. A fast
moving CME that overtook the CME from 19 March is visible off the
west limb on LASCO C3.
IB. Solar Activity Forecast
Solar activity is expected to remain
very low for the next 3 days (21-23 March).
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
The geomagnetic field was mostly quiet with a brief period of
unsettled to active conditions (03-09Z) due to extended Bz south and
slightly elevated solar wind speeds near 420km/s.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to remain quiet with brief periods of unsettled conditions
over the next 3 days (21-23 March).
III. Event Probabilities 21 Mar to 23 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 20 Mar 084 Predicted 21 Mar-23 Mar 084/084/084 90 Day Mean 20 Mar 081
V. Geomagnetic A Indices
Observed Afr/Ap 19 Mar 002/004 Estimated Afr/Ap 20 Mar 007/006 Predicted Afr/Ap 21 Mar-23 Mar 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 21 Mar to 23 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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