Viewing archive of Sunday, 1 March 1998
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 1998 Mar 01 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 060 Issued at 2200Z on 01 MAR 1998IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 01-2100Z SOLAR ACTIVITY WAS LOW. REGION 8169 (S21W72) PRODUCED
TWO C-CLASS SUBFLARES AROUND MID PERIOD. OTHERWISE, OCCASIONAL
B-CLASS X-RAY BURSTS OCCURRED. REGION 8171 (S23W23) DISPLAYED
GRADUAL GROWTH THROUGH THE PERIOD. REGIONS 8172 (N22E05) AND 8173
(S17E71) WERE NUMBERED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
REGIONS 8169 AND 8171 ARE CAPABLE OF C-CLASS FLARE PRODUCTION.
IIA. Geophysical Activity Summary 28-2100Z to 01-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED. ACTIVE LEVELS ARE POSSIBLE ON THE
FINAL DAY OF THE FORECAST PERIOD.
III. Event Probabilities 02 MAR to 04 MAR
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 01 MAR 098 Predicted 02 MAR-04 MAR 100/098/096 90 Day Mean 01 MAR 095
V. Geomagnetic A Indices
OBSERVED AFR/AP 28 FEB 012/012 ESTIMATED AFR/AP 01 MAR 008/009 PREDICTED AFR/AP 02 MAR-04 MAR 005/005-005/005-010/010
VI. Geomagnetic Activity Probabilities 02 MAR to 04 MAR
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 20% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 30% |
| Minor storm | 05% | 05% | 10% |
| Major-severe storm | 01% | 01% | 01% |
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