Viewing archive of Saturday, 30 August 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 Aug 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 242 Issued at 2200Z on 30 AUG 1997IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z SOLAR ACTIVITY WAS MODERATE. REGION 8076 (N28W01)
PRODUCED AN M1/0F TENFLARE AT 29/ 2332Z. SMALL DISCRETE RADIO BURSTS
WERE REPORTED, AMONG THEM 200 SFU AT 245 MHZ, AND 130 SFU AT 2695
MHZ. NO RADIO SWEEP EVENTS OCCURRED. THE REGION ALSO HAD A C1/0F AT
1125Z, BUT HAS BEEN RELATIVELY QUIET WHILE SHOWING DECAY IN WHITE
LIGHT SINCE THEN. ONE NEW REGION WAS BORN ON THE DISK, 8080
(N18W31).
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
ADDITIONAL C-CLASS FLARES SHOULD COME FROM REGION 8076, BUT MORE
M-CLASS EVENTS ARE UNLIKELY.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
THE GEOMAGNETIC FIELD WAS MOSTLY QUIET TO UNSETTLED. WEAK SUBSTORMS
WERE SEEN AT SOME SITES, ACCOMPANIED BY SHORT-LIVED ACTIVE
CONDITIONS. THE GREATER THAN 2 MEV ELECTRON FLUX AT GEOSYNCHRONOUS
ORBIT ATTAINED HIGH LEVELS DURING THE LATTER PART OF THE PERIOD.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED. SUBSTORM ACTIVITY SHOULD DIMINISH
IN THE NEXT 24 HOURS.
III. Event Probabilities 31 AUG to 02 SEP
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 30 AUG 092 Predicted 31 AUG-02 SEP 092/092/090 90 Day Mean 30 AUG 074
V. Geomagnetic A Indices
OBSERVED AFR/AP 29 AUG 015/015 ESTIMATED AFR/AP 30 AUG 010/015 PREDICTED AFR/AP 31 AUG-02 SEP 010/010-005/008-005/006
VI. Geomagnetic Activity Probabilities 31 AUG to 02 SEP
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 15% | 15% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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