Viewing archive of Monday, 28 February 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 Feb 28 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 059 Issued at 2200Z on 28 Feb 2005IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z Solar activity continues at very low levels. Region 739
(S04E21) is a very small and magnetically simple region, and is the
only sunspot group on the visible disk. No activity of note was
observed today.
IB. Solar Activity Forecast
Solar activity is expected to continue
at very low levels.
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
The geomagnetic field was quiet to unsettled. A coronal hole high
speed stream is in effect; however, the IMF Bz was predominantly
northward. Solar wind speed ranged from 550 - 600 km/s.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled with isolated active periods.
III. Event Probabilities 01 Mar to 03 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 28 Feb 075 Predicted 01 Mar-03 Mar 075/075/080 90 Day Mean 28 Feb 098
V. Geomagnetic A Indices
Observed Afr/Ap 27 Feb 006/008 Estimated Afr/Ap 28 Feb 010/015 Predicted Afr/Ap 01 Mar-03 Mar 008/012-005/008-005/008
VI. Geomagnetic Activity Probabilities 01 Mar to 03 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 15% |
| Minor storm | 15% | 10% | 05% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 25% | 25% |
| Minor storm | 20% | 15% | 10% |
| Major-severe storm | 10% | 05% | 05% |
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