Viewing archive of Friday, 22 August 2003
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 2003 Aug 22 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 234 Issued at 2200Z on 22 Aug 2003IA. Analysis of Solar Active Regions and Activity from 21-2100Z to 22-2100Z Solar activity was low. Most observed activity occurred
in Region 436 (N07E03) which has grown since yesterday and has
become more magnetically complex. Region 440 (S07W06) is also
rapidly growing but has not yet produced significant activity. New
Regions 442 (S12E65) and 443 (N15E09) were numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be low.
C-class flares are possible in Regions 436 and 440. There is also a
slight chance of a small M-class flare in Region 436.
IIA. Geophysical Activity Summary 21-2100Z to 22-2100Z
The geomagnetic field ranged from unsettled to major storm levels.
The high speed stream induced disturbance continues. The greater
than 2 MeV electron flux at geosynchronous orbit was high.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to vary from unsettled to storm levels. The intensity of
the coronal hole disturbance is expected to begin to diminish by the
third day of the forecast period.
III. Event Probabilities 23 Aug to 25 Aug
| Class M | 10% | 15% | 20% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 22 Aug 121 Predicted 23 Aug-25 Aug 120/120/122 90 Day Mean 22 Aug 127
V. Geomagnetic A Indices
Observed Afr/Ap 21 Aug 029/053 Estimated Afr/Ap 22 Aug 025/050 Predicted Afr/Ap 23 Aug-25 Aug 025/030-020/030-020/030
VI. Geomagnetic Activity Probabilities 23 Aug to 25 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 50% | 50% | 50% |
| Minor storm | 30% | 30% | 30% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 35% | 35% |
| Minor storm | 50% | 50% | 50% |
| Major-severe storm | 15% | 15% | 15% |
All times in UTC
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