Viewing archive of Thursday, 11 September 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 Sep 11 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 254 Issued at 2200Z on 11 Sep 2003IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z Solar activity was at low levels. Region 456 (S08W32)
produce a C1 flare at 11/1454Z. Region 456 has shown some growth
and weak polarity mixing. This region has simplified to a Beta
magnetic configuration.
IB. Solar Activity Forecast
Solar activity is expected to be at
very low to low levels. Region 456 has the potential for C-class
flares.
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic field was at quiet to minor storm levels. One period
of minor storm levels was observed and solar wind speed remains
above 600 km/s.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to active levels. High speed stream effects
are expected to continue into day one with unsettled to active
conditions. Quiet to unsettled conditions are expected on day two
and day three of the forecast period.
III. Event Probabilities 12 Sep to 14 Sep
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 11 Sep 097 Predicted 12 Sep-14 Sep 100/105/110 90 Day Mean 11 Sep 122
V. Geomagnetic A Indices
Observed Afr/Ap 10 Sep 012/019 Estimated Afr/Ap 11 Sep 014/015 Predicted Afr/Ap 12 Sep-14 Sep 010/010-010/010-010/010
VI. Geomagnetic Activity Probabilities 12 Sep to 14 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 25% | 25% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 25% | 25% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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