Viewing archive of Monday, 29 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 29 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 333 Issued at 2200Z on 29 NOV 1999IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z SOLAR ACTIVITY WAS MODERATE. AN M1/SF FLARE OCCURRED IN
REGION 8773 (S11W85) AT 29/1414UT. THIS IS A SMALL SUNSPOT GROUP
JUST TO THE EAST OF MAJOR FLARE PRODUCER 8771 (S15, LO=167) WHICH
HAS ROTATED BEYOND THE WEST SOLAR LIMB. A NUMBER OF SMALLER FLARES
OCCURRED FROM A VARIETY OF REGIONS, INCLUDING A C6/SF AT 29/0438UT
IN DECAYING REGION 8778 (S14W47). REGIONS 8781 (S13E09) AND 8782
(N10W27) ARE GROWING AND ALSO PRODUCED SUBFLARE ACTIVITY.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. C-CLASS ACTIVITY IS POSSIBLE FROM REGIONS 8773, 8778,
8781, AND 8782. M-CLASS ACTIVITY IS LESS LIKELY BUT ALSO POSSIBLE
FROM 8773 OR 8778.
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
THE GEOMAGNETIC FIELD WAS QUIET.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 30 NOV to 02 DEC
| Class M | 50% | 40% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 29 NOV 164 Predicted 30 NOV-02 DEC 160/150/145 90 Day Mean 29 NOV 164
V. Geomagnetic A Indices
OBSERVED AFR/AP 28 NOV 007/007 ESTIMATED AFR/AP 29 NOV 005/008 PREDICTED AFR/AP 30 NOV-02 DEC 005/008-005/008-005/005
VI. Geomagnetic Activity Probabilities 30 NOV to 02 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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