Viewing archive of Thursday, 24 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 24 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 114 Issued at 2200Z on 24 APR 1997IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z SOLAR ACTIVITY REMAINED VERY LOW. REGION 8035 (N18E35)
SLOWLY DECAYED THROUGH THE PERIOD. NO FLARE ACTIVITY OCCURRED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
THE GEOMAGNETIC FIELD VARIED FROM QUIET TO MINOR STORM LEVELS. THE
BRIEF DISTURBANCE, EARLY IN THE PERIOD, WAS SEEN AT BOTH MID AND
HIGH LATITUDES. IT WEAKENED THROUGHOUT THE DAY.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE UNSETTLED UNTIL APRIL 27, WHEN QUIET CONDITIONS ARE
ANTICIPATED.
III. Event Probabilities 25 APR to 27 APR
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 24 APR 070 Predicted 25 APR-27 APR 070/070/071 90 Day Mean 24 APR 074
V. Geomagnetic A Indices
OBSERVED AFR/AP 23 APR 011/009 ESTIMATED AFR/AP 24 APR 014/015 PREDICTED AFR/AP 25 APR-27 APR 010/008-010/008-005/005
VI. Geomagnetic Activity Probabilities 25 APR to 27 APR
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 10% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 20% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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