Viewing archive of Tuesday, 8 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 08 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 067 Issued at 2200Z on 08 Mar 2005IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z Solar activity was very low. The largest event of the
period was a B5.4 flare that occurred at 08/0309Z from Region 742
(S06E56). No new regions were numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be very
low to low.
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
The geomagnetic field was at unsettled to minor storm levels. Solar
wind speed at ACE increased to a maximum near 820 km/s at about
08/0810Z and declined to 700 km/s by the end of the reporting
period. The greater than 2 MeV electron flux at geosynchronous
orbit reached high levels again today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be unsettled to active with minor storm periods possible
at high latitudes on 09 March. On 10 March, conditions are expected
to be mostly unsettled as the coronal hole high speed stream rotates
out of a geoeffective position. On 11 March, conditions are
expected to be quiet to unsettled.
III. Event Probabilities 09 Mar to 11 Mar
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 08 Mar 094 Predicted 09 Mar-11 Mar 095/100/100 90 Day Mean 08 Mar 097
V. Geomagnetic A Indices
Observed Afr/Ap 07 Mar 028/042 Estimated Afr/Ap 08 Mar 015/025 Predicted Afr/Ap 09 Mar-11 Mar 012/020-008/015-005/010
VI. Geomagnetic Activity Probabilities 09 Mar to 11 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 15% |
| Minor storm | 15% | 10% | 05% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 40% | 30% | 20% |
| Minor storm | 20% | 15% | 10% |
| Major-severe storm | 10% | 05% | 01% |
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