Viewing archive of Wednesday, 26 November 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 Nov 26 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 330 Issued at 2200Z on 26 Nov 2003IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity was low. Occasional low C-class flares
were observed in Region 508 (S18W18). This region continues to
exhibit some complexity while undergoing slow decay. Region 501
(N04, L=004) has quietly rotated around the west limb. Region 507
(N08W30) maintains considerable size and still appears to contain a
weak delta configuration; however, activity in this region remains
very low. New Region 513 (N09E71) was numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be low
to moderate. Though diminished greatly in size and complexity,
Region 508 still maintains potential for an isolated M-class event.
An M-class flare is also possible from Region 507.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field was quiet to unsettled. Solar wind speed
remains elevated, but is in gradual decline. The greater than 2MeV
electron flux at geosynchronous orbit was at high levels again
today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to continue at quiet to unsettled levels. Isolated active
periods are possible at higher latitudes.
III. Event Probabilities 27 Nov to 29 Nov
| Class M | 30% | 30% | 30% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | yellow | ||
IV. Penticton 10.7 cm Flux
Observed 26 Nov 171 Predicted 27 Nov-29 Nov 170/165/160 90 Day Mean 26 Nov 134
V. Geomagnetic A Indices
Observed Afr/Ap 25 Nov 009/013 Estimated Afr/Ap 26 Nov 007/015 Predicted Afr/Ap 27 Nov-29 Nov 008/010-008/010-010/010
VI. Geomagnetic Activity Probabilities 27 Nov to 29 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 25% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 30% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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