Viewing archive of Tuesday, 31 July 2007
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 2007 Jul 31 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 212 Issued at 2200Z on 31 Jul 2007IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 31-2100Z Solar activity was very low.
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 to unsettled.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled with a chance for isolated active
periods on 01 August due to continued coronal hole effects. Expect
mostly quiet conditions on 02 - 03 August.
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 068 Predicted 01 Aug-03 Aug 070/070/070 90 Day Mean 31 Jul 073
V. Geomagnetic A Indices
Observed Afr/Ap 30 Jul 010/010 Estimated Afr/Ap 31 Jul 005/008 Predicted Afr/Ap 01 Aug-03 Aug 008/010-005/005-005/005
VI. Geomagnetic Activity Probabilities 01 Aug to 03 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 15% | 15% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
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