Viewing archive of Monday, 8 March 1999
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 1999 Mar 08 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 067 Issued at 2200Z on 08 MAR 1999IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z SOLAR ACTIVITY WAS MODERATE. THERE WERE TWO X-RAY
EVENTS THIS PERIOD, ONE WAS AN OPTICALLY UNCORRELATED C7 AT 08/0031Z
AND THE OTHER WAS A M2/SF AT 08/0637Z FROM REGION 8484 (S22E76).
THREE NEW REGIONS WERE NUMBERED TODAY AS REGION 8484, REGION 8485
(N22E66), AND REGION 8486 (S25W12).
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
ISOLATED M-CLASS EVENTS ARE POSSIBLE THROUGH THE PERIOD.
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO ACTIVE. MINOR STORM CONDITIONS AT
HIGH LATITUDES WERE OBSERVED AT 07/2100Z.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED WITH ISOLATED ACTIVE CONDITIONS
THE FIRST DAY OF THE FORECAST. THE REMAINDER OF THE PERIOD SHOULD BE
AT QUIET TO UNSETTLED LEVELS.
III. Event Probabilities 09 MAR to 11 MAR
| Class M | 20% | 20% | 20% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 08 MAR 127 Predicted 09 MAR-11 MAR 132/138/145 90 Day Mean 08 MAR 142
V. Geomagnetic A Indices
OBSERVED AFR/AP 07 MAR 014/025 ESTIMATED AFR/AP 08 MAR 015/016 PREDICTED AFR/AP 09 MAR-11 MAR 015/012-010/010-005/010
VI. Geomagnetic Activity Probabilities 09 MAR to 11 MAR
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 25% | 20% |
| Minor storm | 15% | 10% | 10% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 25% | 25% |
| Minor storm | 15% | 10% | 10% |
| Major-severe storm | 05% | 05% | 05% |
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