Viewing archive of Wednesday, 26 November 1997
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 1997 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 1997IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z SOLAR ACTIVITY WAS MODERATE DUE TO AN M2/SF FLARE AT
26/1837Z IN NEW REGION 8113 (N20E77). THIS REGION IS STILL COMING
INTO VIEW AS IT ROTATES AROUND THE EAST LIMB BUT APPEARS TO BE A
MODERATELY SIZED E-TYPE SUNSPOT GROUP. IT HAS ALSO GENERATED SEVERAL
C-CLASS FLARES SINCE YESTERDAY. OTHER DISK REGIONS WERE RELATIVELY
QUIET.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE
MODERATE. ANOTHER M-CLASS FLARE IS PROBABLE FROM REGION 8113.
C-CLASS ACTIVITY SHOULD CONTINUE.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
THE GEOMAGNETIC FIELD WAS QUIET. THE GREATER THAN 2 MEV ELECTRON FLUX
WAS HIGH.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET.
III. Event Probabilities 27 NOV to 29 NOV
| Class M | 40% | 40% | 40% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 26 NOV 108 Predicted 27 NOV-29 NOV 110/115/115 90 Day Mean 26 NOV 093
V. Geomagnetic A Indices
OBSERVED AFR/AP 25 NOV 003/003 ESTIMATED AFR/AP 26 NOV 004/005 PREDICTED AFR/AP 27 NOV-29 NOV 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 27 NOV to 29 NOV
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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