Viewing archive of Monday, 7 September 2009
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 2009 Sep 07 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 250 Issued at 2200Z on 07 Sep 2009IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z Solar activity was very low. No flares were observed.
The visible disk remained spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very
low for the next three days (8-10 September).
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet with isolated unsettled periods on day one and
day two (8-9 September). The increased activity is due to a
recurrent coronal hole high speed stream. On day three (10
September), the geomagnetic field will return to quiet levels.
III. Event Probabilities 08 Sep to 10 Sep
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Sep 069 Predicted 08 Sep-10 Sep 068/068/068 90 Day Mean 07 Sep 068
V. Geomagnetic A Indices
Observed Afr/Ap 06 Sep 002/003 Estimated Afr/Ap 07 Sep 002/005 Predicted Afr/Ap 08 Sep-10 Sep 005/008-007/010-005/008
VI. Geomagnetic Activity Probabilities 08 Sep to 10 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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