Viewing archive of Saturday, 8 February 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 Feb 08 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 039 Issued at 2200Z on 08 Feb 2003IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z Solar activity was low. A single C1 flare from newly
numbered Region 285 (S10E75) was the highlight of the period. Just a
single sunspot visible so far in this new region, but limb proximity
is hindering a thorough analysis. Regions 274 (S05W76), 276
(S13W14,) and 278 (N18E26), the largest regions on the visible disk,
exhibited occasional plage fluctuations, but all are in a decay
phase with relatively simple magnetic configurations. New Region 284
(N12W14) was also numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be low.
Several regions on the visible disk have potential to produce an
isolated C-class flare.
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
The geomagnetic field was mostly quiet to unsettled with an isolated
active period between 08/1200 - 1500Z. The greater than 2 MeV
electron fluxes at geosynchronous orbit reached high levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to continue at quiet to unsettled levels.
III. Event Probabilities 09 Feb to 11 Feb
| Class M | 35% | 35% | 35% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 08 Feb 139 Predicted 09 Feb-11 Feb 140/140/140 90 Day Mean 08 Feb 152
V. Geomagnetic A Indices
Observed Afr/Ap 07 Feb 008/013 Estimated Afr/Ap 08 Feb 010/010 Predicted Afr/Ap 09 Feb-11 Feb 008/008-008/008-008/008
VI. Geomagnetic Activity Probabilities 09 Feb to 11 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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