Viewing archive of Thursday, 3 February 2005
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 2005 Feb 03 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 034 Issued at 2200Z on 03 Feb 2005IA. Analysis of Solar Active Regions and Activity from 02-2100Z to 03-2100Z Solar activity was very low. Occasional B-class flares
were observed from an active region rotating around the southeast
limb. Region 729 (S11W25) continues to decay and is the only sunspot
on the visible disk. A 15 degree filament erupted from near N10W07
at around 03/0600Z, but there does not appear to be any
Earth-directed ejecta. Brightness on the southeast and northeast
limb indicates additional active regions will soon rotate into view.
Old active Region 720 (N13, L-178) is due to rotate into view on 05
February.
IB. Solar Activity Forecast
Solar activity is expected to be very
low to low. Activity levels are expected to increase as active
regions rotate into view over the next three days.
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
The geomagnetic field was quiet to unsettled with an isolated active
period between 03/0300 - 0600Z. The solar wind speed remains
slightly elevated at just over 500 km/s. The greater than 2 MeV
electron flux at geosynchronous orbit was at high levels again
today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled with isolated active periods.
III. Event Probabilities 04 Feb to 06 Feb
| Class M | 05% | 10% | 15% |
| Class X | 01% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 03 Feb 083 Predicted 04 Feb-06 Feb 090/100/115 90 Day Mean 03 Feb 101
V. Geomagnetic A Indices
Observed Afr/Ap 02 Feb 007/008 Estimated Afr/Ap 03 Feb 008/008 Predicted Afr/Ap 04 Feb-06 Feb 008/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 04 Feb to 06 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 20% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 25% | 25% |
| Minor storm | 15% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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