Viewing archive of Monday, 27 January 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 Jan 27 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 027 Issued at 2200Z on 27 JAN 1997IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z SOLAR ACTIVITY WAS VERY LOW. A B1 X-RAY EVENT AT 1425Z
WAS THE ONLY FLARE ACTIVITY FOR THE DAY. REGION 8014 (S18E24)
CONTINUES TO BE A VERY SMALL, STABLE SUNSPOT GROUP.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO ACTIVE. SOLAR WIND MEASUREMENTS
SUGGEST THE ACTIVITY OVER THE LAST 24 HOURS IS DUE TO A HIGH SPEED,
LOW DENSITY WIND STREAM, CONSISTENT WITH A CORONAL HOLE. THE GREATER
THAN 2 MEV ELECTRONS EXCEEDED HIGH FLUX LEVELS AT 1725Z AND ARE
CONTINUING TO RISE SLOWLY.
IIB. Geophysical Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO
BE QUIET TO UNSETTLED FOR THE NEXT 24 HOURS. PREDOMINANTLY QUIET
CONDITIONS SHOULD PREVAIL ON THE SECOND AND THIRD DAYS.
III. Event Probabilities 28 JAN to 30 JAN
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 27 JAN 074 Predicted 28 JAN-30 JAN 074/074/074 90 Day Mean 27 JAN 077
V. Geomagnetic A Indices
OBSERVED AFR/AP 26 JAN 015/013 ESTIMATED AFR/AP 27 JAN 011/012 PREDICTED AFR/AP 28 JAN-30 JAN 007/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 28 JAN to 30 JAN
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 10% |
| Minor storm | 10% | 05% | 01% |
| Major-severe storm | 05% | 01% | 01% |
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