Viewing archive of Tuesday, 30 November 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 Nov 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 334 Issued at 2200Z on 30 NOV 1999IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z SOLAR ACTIVITY WAS LOW. REGION 8782 (N11W41) WAS THE
MOST ACTIVE AREA AND PRODUCED SEVERAL LOW-LEVEL C-CLASS FLARES.
SMALL FLARES ALSO OCCURRED IN REGION 8778 (S14W62). REGION 8782
CONTINUES TO GROW AND REGION 8778 IS SLOWLY DECAYING. NEW REGIONS
8783 (S16W43) AND 8784 (N30E32) EMERGED ON THE DISK.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
C-CLASS FLARES ARE POSSIBLE IN REGIONS 8778, 8781, AND 8782.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 01 DEC to 03 DEC
| Class M | 40% | 30% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 30 NOV 163 Predicted 01 DEC-03 DEC 160/155/155 90 Day Mean 30 NOV 164
V. Geomagnetic A Indices
OBSERVED AFR/AP 29 NOV 002/004 ESTIMATED AFR/AP 30 NOV 008/008 PREDICTED AFR/AP 01 DEC-03 DEC 008/008-008/005-008/005
VI. Geomagnetic Activity Probabilities 01 DEC to 03 DEC
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 05% | 05% | 05% |
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