Viewing archive of Wednesday, 9 March 2005
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 2005 Mar 09 2210 UTC# Prepared jointly by the U.S. Dept. of Commerce, NOAA, #Space Environment Center and the U.S. Air Force. #
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 068 Issued at 2200Z on 09 Mar 2005IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z Solar Activity was low. A C1.8 flare occurred from
Region 741 (N12E03) at 09/0241Z. Region 742 (S06E43) has grown from
80 to 170 millionths in area. New Region 743 (S09E76) was numbered
today.
IB. Solar Activity Forecast
Solar activity is expected to be very
low to low with a slight chance for an isolated M-class event.
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
The geomagnetic field was unsettled to active. Solar wind speed at
ACE remained elevated between 650 km/s and 750 km/s during the
reporting period. The greater than 2 MeV electron flux at
geosynchronous orbit was at high levels again today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be mostly unsettled on 10 March. Conditions are
expected to abate to quiet to unsettled levels on 11 and 12 March.
III. Event Probabilities 10 Mar to 12 Mar
| Class M | 10% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 09 Mar 100 Predicted 10 Mar-12 Mar 105/110/110 90 Day Mean 09 Mar 097
V. Geomagnetic A Indices
Observed Afr/Ap 08 Mar 017/026 Estimated Afr/Ap 09 Mar 012/016 Predicted Afr/Ap 10 Mar-12 Mar 008/012-005/010-005/010
VI. Geomagnetic Activity Probabilities 10 Mar to 12 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 20% |
| Minor storm | 15% | 10% | 10% |
| Major-severe storm | 05% | 01% | 01% |
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