Viewing archive of Monday, 7 April 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 Apr 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 097 Issued at 2200Z on 07 APR 1997IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z SOLAR ACTIVITY WAS LOW. AT 07/1407Z REGION 8027
(S28E12), A SLOWLY DECAYING CRO SPOT GROUP, PRODUCED A C6/3N TEN
FLARE WITH AN ASSOCIATED TYPE II AND TYPE IV SWEEP, A SMALL
DISAPPEARING FILAMENT AND CORONAL LOOP SYSTEM. THIS REGION ALSO
PRODUCED A SMALL DISAPPEARING FILAMENT WITH AN ASSOCIATED TYPE II
SWEEP AT 07/1344Z. THIS REGION WAS THE ONLY SPOT GROUP ON THE
VISIBLE DISK.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW TO LOW. REGION 8027 IS EXPECTED TO CONTINUE TO PRODUCE
OCCASIONAL C-CLASS FLARES AND HAS AN OUTSIDE CHANCE FOR ISOLATED
M-CLASS FLARING.
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED AT ALL LATITUDES.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO REMAIN QUIET TO UNSETTLED FOR THE ENTIRE FORECAST
PERIOD. AN INCREASE IN GEOMAGNETIC ACTIVITY IS EXPECTED IN
CONJUNCTION WITH TODAY'S FLARE ACTIVITY BY THE END OF DAY THREE OF
THE FORECAST PERIOD.
III. Event Probabilities 08 APR to 10 APR
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 07 APR 077 Predicted 08 APR-10 APR 076/076/076 90 Day Mean 07 APR 074
V. Geomagnetic A Indices
OBSERVED AFR/AP 06 APR 011/011 ESTIMATED AFR/AP 07 APR 009/009 PREDICTED AFR/AP 08 APR-10 APR 010/010-010/010-005/015
VI. Geomagnetic Activity Probabilities 08 APR to 10 APR
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 05% |
| 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% |
All times in UTC
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