Viewing archive of Thursday, 30 September 2010
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 2010 Sep 30 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 273 Issued at 2200Z on 30 Sep 2010IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity was very low. Region 1109 (N21W39)
produced several B-class events. Region 1109 has decreased in areal
coverage and extent and is now a Dhi group with a beta magnetic
configuration. Region 1110 (N19W60) has also decreased in areal
coverage and is now a Bxo group with a beta magnetic configuration.
Region 1111 (N24E42) is an A-type group with one spot.
IB. Solar Activity Forecast
Solar activity is expected to be low
with C-class activity likely.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field was quiet during the past 24 hours.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for days one and two (01-02 October). Mostly
quiet with a slight chance for isolated unsettled periods are
expected for day three (03 October) due to recurrent activity.
III. Event Probabilities 01 Oct to 03 Oct
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Sep 090 Predicted 01 Oct-03 Oct 087/087/084 90 Day Mean 30 Sep 080
V. Geomagnetic A Indices
Observed Afr/Ap 29 Sep 002/005 Estimated Afr/Ap 30 Sep 002/003 Predicted Afr/Ap 01 Oct-03 Oct 005/005-005/005-007/007
VI. Geomagnetic Activity Probabilities 01 Oct to 03 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 15% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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