Viewing archive of Monday, 1 September 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 Sep 01 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 244 Issued at 2200Z on 01 SEP 1997IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z SOLAR ACTIVITY WAS LOW. REGION 8076 (N28W28) REMAINS
THE DOMINANT FEATURE VISIBLE, NUMBERING 28 SPOTS AND MEASURING 210
MILLIONTHS IN WHITE LIGHT. THE REGION WAS STABLE THROUGHOUT THE DAY,
AND THE LIKELY SOURCE OF THE C1 X-RAY EVENT AT 0238Z. NEWLY NUMBERED
REGION 8082 (N22E70) APPEARED, MAKING A TOTAL OF FIVE SUNSPOT GROUPS
IN VIEW. FREQUENT TYPE III SWEEP EVENTS AND RADIO BURSTS AT LOW
FREQUENCIES OCCURRED AGAIN THROUGHOUT THE INTERVAL.
IB. Solar Activity Forecast
SOLAR ACTIVITY SHOULD PERSIST AT LOW
LEVELS. REGION 8076 SHOULD PRODUCE OCCASIONAL C-CLASS FLARES.
IIA. Geophysical Activity Summary 31-2100Z to 01-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO SLIGHTLY UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET THROUGHOUT THE PERIOD.
III. Event Probabilities 02 SEP to 04 SEP
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 01 SEP 093 Predicted 02 SEP-04 SEP 092/092/090 90 Day Mean 01 SEP 074
V. Geomagnetic A Indices
OBSERVED AFR/AP 31 AUG 005/004 ESTIMATED AFR/AP 01 SEP 007/008 PREDICTED AFR/AP 02 SEP-04 SEP 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 02 SEP to 04 SEP
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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