Viewing archive of Tuesday, 27 August 1996
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 1996 Aug 27 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 240 Issued at 2200Z on 27 AUG 1996IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z SOLAR ACTIVITY WAS VERY LOW. REGION 7986 (S12E25)
PRODUCED TWO ADDITIONAL OPTICALLY CORRELATED B-CLASS X-RAY
EVENTS, THE LARGEST A B5/SF AT 26/2320Z. THE REGION HAS
STABILIZED AND IS CURRENTLY A THREE SPOT HSX GROUP.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE
VERY LOW, WITH A CONTINUED 40 PERCENT CHANCE FOR ISOLATED
C-CLASS EVENTS FROM REGION 7986 THROUGH THE FORECAST PERIOD.
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
THE GEOMAGNETIC FIELD HAS BEEN AT QUIET TO ACTIVE LEVELS AT
ALL LATITUDES FOR THE PAST 24 HOURS. THE GREATER THAN 2 MEV
ELECTRONS CONTINUE TO FLUCTUATE BETWEEN MODERATE TO HIGH
LEVELS.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO ACTIVE FOR THE NEXT 48 HOURS, AISOLATED PERIO
DS OF MINOR/MAJOR STORMING
ON DAY THREE, DUE TO THE ROTATION OF A LARGE, FAVORABLY
POSITIONED CORONAL HOLE.
III. Event Probabilities 28 AUG to 30 AUG
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 27 AUG 074 Predicted 28 AUG-30 AUG 075/075/075 90 Day Mean 27 AUG 071
V. Geomagnetic A Indices
OBSERVED AFR/AP 26 AUG 013/013 ESTIMATED AFR/AP 27 AUG 015/015 PREDICTED AFR/AP 28 AUG-30 AUG 015/015-020/020-020/015
VI. Geomagnetic Activity Probabilities 28 AUG to 30 AUG
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 40% | 40% |
| Minor storm | 10% | 15% | 15% |
| Major-severe storm | 05% | 10% | 10% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 35% | 35% |
| Minor storm | 10% | 20% | 20% |
| Major-severe storm | 05% | 15% | 15% |
All times in UTC
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