Viewing archive of Friday, 23 February 2001
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 2001 Feb 23 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 054 Issued at 2200Z on 23 Feb 2001IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z Solar activity was low with only two weak C-class X-ray
flares. Region 9354 (S09W59) grew in size, but maintained a
relatively simple magnetic configuration. No new regions were
numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be low.
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic field was quiet to active. An isolated active period
occurred between 06Z and 09Z.
IIB. Geophysical Activity Forecast
Solar activity is expected to
be quiet to unsettled.
III. Event Probabilities 24 Feb to 26 Feb
| Class M | 20% | 20% | 20% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 23 Feb 145 Predicted 24 Feb-26 Feb 145/145/140 90 Day Mean 23 Feb 166
V. Geomagnetic A Indices
Observed Afr/Ap 22 Feb 007/006 Estimated Afr/Ap 23 Feb 010/012 Predicted Afr/Ap 24 Feb-26 Feb 005/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 24 Feb to 26 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 25% | 25% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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