Viewing archive of Sunday, 28 July 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 Jul 28 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 210 Issued at 2200Z on 28 JUL 1996IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z SOLAR ACTIVITY WAS VERY LOW. REGION 7981 (S10E60)
ROTATED FULLY INTO VIEW, AND CONSISTS OF AN ELONGATED BUT
SIMPLE SUNSPOT GROUP WITH TWO DISTINCT AREAS OF PLAGE. ONLY
B-CLASS X RAY FLARES OCCURRED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE
VERY LOW. THERE IS A DISTINCT CHANCE OF AN ISOLATED C-CLASS
EVENT FROM REGION 7981.
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
THE GEOMAGNETIC FIELD VARIED FROM QUIET TO ACTIVE. A SUDDEN
IMPULSE OF 10 NT WAS OBSERVED AT BOULDER AT 28/1307Z.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE UNSETTLED. INTERVALS OF NIGHTTIME SUBSTORMS
MAY OCCUR OVER THE NEXT 24 HOURS.
III. Event Probabilities 29 JUL to 31 JUL
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 28 JUL 076 Predicted 29 JUL-31 JUL 078/080/082 90 Day Mean 28 JUL 070
V. Geomagnetic A Indices
OBSERVED AFR/AP 27 JUL 005/005 ESTIMATED AFR/AP 28 JUL 010/010 PREDICTED AFR/AP 29 JUL-31 JUL 010/010-010/010-010/010
VI. Geomagnetic Activity Probabilities 29 JUL to 31 JUL
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
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