Viewing archive of Wednesday, 27 February 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 Feb 27 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 058 Issued at 2200Z on 27 Feb 2002IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z Solar activity was moderate. An M1/Sf flare occurred at
27/1558 UTC in Region 9839 (S18W75). This region also produced a few
C-class subflares. Growth in Regions 9842 (S19W63) and 9846 (S03W82)
appears to have stabilized and neither area has produced significant
flares in the past day. New Region 9850 (N27W51) emerged on the
disk.
IB. Solar Activity Forecast
Solar activity is expected to be low
to moderate. Another low-level M-class flare is possible in any one
of a number of regions, including 9839 (S18W75), 9842 (S19W63), 9845
(N17E21), and 9846 (S03W82).
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic field was quiet to unsettled.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled.
III. Event Probabilities 28 Feb to 02 Mar
| Class M | 40% | 40% | 40% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 27 Feb 199 Predicted 28 Feb-02 Mar 195/190/190 90 Day Mean 27 Feb 223
V. Geomagnetic A Indices
Observed Afr/Ap 26 Feb 008/008 Estimated Afr/Ap 27 Feb 006/008 Predicted Afr/Ap 28 Feb-02 Mar 005/008-005/008-005/005
VI. Geomagnetic Activity Probabilities 28 Feb to 02 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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