Viewing archive of Saturday, 29 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 29 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 088 Issued at 2200Z on 29 MAR 1997IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z SOLAR ACTIVITY WAS VERY LOW. OCCASIONAL LOW-LEVEL
B-CLASS FLARES WERE OBSERVED. REGION 8026 (S23E46) CONTINUED TO GROW
SLOWLY DURING THE PERIOD AND HAS DEVELOPED PENUMBRA ON LEADER AND
TRAILER SPOTS. THE ACTIVITY IN THE REGION HAS SUBSIDED SOMEWHAT.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW TO LOW. THERE CONTINUES TO BE A FAIR CHANCE FOR AN OCCASIONAL
C-CLASS EVENT OUT OF REGION 8026. THE CHANCES FOR M-CLASS LEVEL
ACTIVITY FROM THIS GROUP ARE SLIGHT, BUT ARE NOW CONSIDERED TO BE
NON-NEGLIGIBLE, GIVEN THE CONTINUED INCREASE OF PHOTOSPHERIC
MAGNETIC FIELD INTENSITY AND THE CONTINUED TREND OF FLUX EMERGENCE
FROM THE REGION.
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
THE GEOMAGNETIC FIELD WAS MOSTLY QUIET TO UNSETTLED WITH SOME
INTERVALS OF ACTIVE CONDITIONS AT HIGH LATITUDES. THE GREATER THAN 2
MEV ELECTRON FLUXES WERE AT MODERATE TO HIGH LEVELS DURING THE
PERIOD.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE PREDOMINANTLY UNSETTLED FOR THE NEXT THREE DAYS.
THERE MAY BE OCCASIONAL ACTIVE PERIODS AT HIGH LATITUDE SITES.
III. Event Probabilities 30 MAR to 01 APR
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 29 MAR 075 Predicted 30 MAR-01 APR 076/077/078 90 Day Mean 29 MAR 074
V. Geomagnetic A Indices
OBSERVED AFR/AP 28 MAR 012/013 ESTIMATED AFR/AP 29 MAR 010/015 PREDICTED AFR/AP 30 MAR-01 APR 010/015-010/012-012/010
VI. Geomagnetic Activity Probabilities 30 MAR to 01 APR
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 25% |
| Minor storm | 05% | 05% | 15% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 25% |
| Minor storm | 10% | 10% | 15% |
| Major-severe storm | 05% | 05% | 05% |
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