Viewing archive of Thursday, 26 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 26 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 085 Issued at 2200Z on 26 Mar 2009IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity was very low. Two B-class flares were
observed: the first was a B1.8 at 26/0143Z from an unnumbered area
(N23W12), the second was a B3.5 at 26/0216Z from beyond the east
limb (based on Stereo B images).
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field was quiet to unsettled.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled on day one (27 March). Days two
and three (28-29 March) are expected to be quiet.
III. Event Probabilities 27 Mar to 29 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Mar 069 Predicted 27 Mar-29 Mar 070/072/072 90 Day Mean 26 Mar 070
V. Geomagnetic A Indices
Observed Afr/Ap 25 Mar 007/010 Estimated Afr/Ap 26 Mar 007/008 Predicted Afr/Ap 27 Mar-29 Mar 007/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 27 Mar to 29 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
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