Viewing archive of Thursday, 31 July 2008
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 2008 Jul 31 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 213 Issued at 2200Z on 31 Jul 2008IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 31-2100Z Solar activity was very low. The visible disk remains
spotless. No flares occurred in the past 24 hours.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 30-2100Z to 31-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet unsettled on day one (1 Aug). Quiet conditions
are expected on days two and three (2-3 Aug).
III. Event Probabilities 01 Aug to 03 Aug
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 31 Jul 066 Predicted 01 Aug-03 Aug 066/066/066 90 Day Mean 31 Jul 067
V. Geomagnetic A Indices
Observed Afr/Ap 30 Jul 004/005 Estimated Afr/Ap 31 Jul 005/005 Predicted Afr/Ap 01 Aug-03 Aug 007/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 01 Aug to 03 Aug
| 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 | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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