Viewing archive of Wednesday, 26 March 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 Mar 26 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 085 Issued at 2200Z on 26 MAR 1997 :::::::::: CORRECTED COPY ::::::::::IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z SOLAR ACTIVITY WAS VERY LOW. THE SOLAR DISK CONTINUES
TO BE SPOTLESS. A SMALL (5 DEGREE) FILAMENT NEAR N52W16 DISAPPEARED
BETWEEN 1310-1317UT TODAY.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
THE GEOMAGNETIC FIELD WAS AT MOSTLY QUIET TO ACTIVE LEVELS. THERE
WERE SOME BRIEF MINOR TO MAJOR STORM LEVEL CONDITIONS AT HIGH
LATITUDES. SOLAR WIND OBSERVATIONS INDICATED HIGH SPEED (500-550
KM/S) AND LOW DENSITY (3-7 P/CC) PLASMA, CONSISTENT WITH A CORONAL
HOLE WIND STREAM. THE GREATER THAN 2 MEV ELECTRON FLUX ATTAINED
MODERATE LEVELS AND WAS CLIMBING AT FORECAST ISSUE TIME.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE ACTIVE TOMORROW IN RESPONSE TO CORONAL HOLE EFFECTS.
PREDOMINANTLY UNSETTLED CONDITIONS ARE EXPECTED FOR THE SECOND AND
THIRD DAYS.
III. Event Probabilities 27 MAR to 29 MAR
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 26 MAR 070 Predicted 27 MAR-29 MAR 070/070/070 90 Day Mean 26 MAR 074
V. Geomagnetic A Indices
OBSERVED AFR/AP 25 MAR 013/012 ESTIMATED AFR/AP 26 MAR 015/015 PREDICTED AFR/AP 27 MAR-29 MAR 020/018-010/012-010/010
VI. Geomagnetic Activity Probabilities 27 MAR to 29 MAR
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 10% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 15% | 20% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 05% | 01% | 01% |
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