Viewing archive of Tuesday, 8 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 08 2206 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 251 Issued at 2200Z on 08 Sep 2009IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z Solar activity was very low. A weak B-level event was
seen in GOES x-rays at approximately 1701Z, which was associated
with a brightening of plage region 1025(N17W73). The solar disk was
otherwise void of activity and continues to be spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very
low for the next three days (9-11 September).
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled for day one (9 September), due to
a recurrent coronal high speed stream. On day two and day three
(10-11 September), the geomagnetic field is expected to return to
quiet levels.
III. Event Probabilities 09 Sep to 11 Sep
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 08 Sep 069 Predicted 09 Sep-11 Sep 069/069/069 90 Day Mean 08 Sep 068
V. Geomagnetic A Indices
Observed Afr/Ap 07 Sep 003/003 Estimated Afr/Ap 08 Sep 003/008 Predicted Afr/Ap 09 Sep-11 Sep 007/010-005/008-005/005
VI. Geomagnetic Activity Probabilities 09 Sep to 11 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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