Viewing archive of Friday, 16 May 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 May 16 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 136 Issued at 2200Z on 16 MAY 1997IA. Analysis of Solar Active Regions and Activity from 15-2100Z to 16-2100Z SOLAR ACTIVITY WAS VERY LOW. REGION 8038 (N21W70)
CONTINUES TO DECAY SLOWLY. NEW REGION 8040 (N06E56), A SMALL A-TYPE
SUNSPOT GROUP, WAS NUMBERED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 15-2100Z to 16-2100Z
THE GEOMAGNETIC FIELD RANGED FROM QUIET TO ACTIVE. THE GREATER THAN 2
MEV ELECTRON FLUX AT GEOSYNCHRONOUS ALTITUDES WAS MODERATE AFTER
16/1646Z.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED. ISOLATED ACTIVE PERIODS ARE
POSSIBLE THROUGH THE FIRST DAY OF THE FORECAST PERIOD.
III. Event Probabilities 17 MAY to 19 MAY
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 16 MAY 072 Predicted 17 MAY-19 MAY 072/070/070 90 Day Mean 16 MAY 074
V. Geomagnetic A Indices
OBSERVED AFR/AP 15 MAY 033/053 ESTIMATED AFR/AP 16 MAY 012/015 PREDICTED AFR/AP 17 MAY-19 MAY 010/012-010/010-010/008
VI. Geomagnetic Activity Probabilities 17 MAY to 19 MAY
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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