Viewing archive of Tuesday, 3 September 2002
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 2002 Sep 03 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 246 Issued at 2200Z on 03 Sep 2002IA. Analysis of Solar Active Regions and Activity from 02-2100Z to 03-2100Z Solar activity was at moderate levels. An optically
uncorrelated M1 flare occurred at 03/0054 UTC. Region 95 (N08E11)
maintains its beta-gamma magnetic configuration and is relative
unchanged from yesterday. One new region was numbered today, Region
103 (N15E73).
IB. Solar Activity Forecast
Solar activity is expected to be low
to moderate. Region 95 has the potential for M-class activity.
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
The geomagnetic field was quiet to unsettled. A weak shock, due to
activity on 30 August, was observed at the L1 position by the
NASA/ACE spacecraft at 03/1710 UTC. Solar wind velocity reached a
peak around 390 km/s and the IMF had a Bz deflection of 10 nT.
Current Bz is approximately -8 nT.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled. Isolated active conditions are
possible on day one of the forecast period due to the weak CME
passage and a recurring coronal hole. Greater than 2 MeV electron
flux at geo-synchronous orbit is expected to be moderate to high on
day three of the forecast period.
III. Event Probabilities 04 Sep to 06 Sep
| Class M | 50% | 40% | 40% |
| Class X | 05% | 01% | 01% |
| Proton | 05% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 03 Sep 171 Predicted 04 Sep-06 Sep 165/160/170 90 Day Mean 03 Sep 169
V. Geomagnetic A Indices
Observed Afr/Ap 02 Sep 005/014 Estimated Afr/Ap 03 Sep 007/010 Predicted Afr/Ap 04 Sep-06 Sep 012/012-010/010-010/010
VI. Geomagnetic Activity Probabilities 04 Sep to 06 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 20% |
| Minor storm | 15% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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