Viewing archive of Monday, 30 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 30 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 211 Issued at 2200Z on 30 Jul 2007IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity was very low. An asymmetric full halo
CME was observed in LASCO data starting at approximately 30/0454Z.
This CME is believed to be a backsided event.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field ranged from quiet to active due to a
geoeffective coronal hole. Solar wind speed remains elevated at
approximately 600 km/s at time of issue.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled with a chance for active periods
for the next two days (31 July - 01 August) due to continued coronal
hole effects. Expect mostly quiet conditions on 02 August.
III. Event Probabilities 31 Jul to 02 Aug
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Jul 069 Predicted 31 Jul-02 Aug 070/070/070 90 Day Mean 30 Jul 073
V. Geomagnetic A Indices
Observed Afr/Ap 29 Jul 011/014 Estimated Afr/Ap 30 Jul 010/015 Predicted Afr/Ap 31 Jul-02 Aug 008/010-010/010-005/005
VI. Geomagnetic Activity Probabilities 31 Jul to 02 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 10% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 15% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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