Viewing archive of Sunday, 14 December 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 Dec 14 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 348 Issued at 2200Z on 14 DEC 1997IA. Analysis of Solar Active Regions and Activity from 13-2100Z to 14-2100Z SOLAR ACTIVITY WAS LOW. REGION 8122 (N29W47) PRODUCED A
C1/SF FLARE AT 14/1611Z. THIS REGION WAS GENERALLY STABLE WITH MINOR
POLARITY MIXING IN THE NON-SPOT FIELDS. A REGION EMERGED NEAR N19E62
AND WAS NUMBERED AS NEW REGION 8123. CORONAGRAPH IMAGES NEAR
14/0630Z SHOWED A DENSE BUBBLE CORONAL MASS EJECTION OFF THE EAST
LIMB NEAR THE EQUATOR. IT HAD REACHED APPROXIMATELY 10 RADII ABOVE
THE LIMB BY THAT TIME. NO CORRELATIVE REPORTS FROM GROUND BASED
OBSERVATORIES WERE RECEIVED.
IB. Solar Activity Forecast
SOLAR ACTIVITY SHOULD BE VERY LOW TO
LOW. REGION 8122 IS CAPABLE OF PRODUCING ISOLATED SMALL C-CLASS
EVENTS.
IIA. Geophysical Activity Summary 13-2100Z to 14-2100Z
THE GEOMAGNETIC FIELD WAS QUIET. ENERGETIC ELECTRON FLUXES AT
GEOSYNCHRONOUS ORBIT REACHED HIGH LEVELS NEAR 14/1435Z.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD SHOULD BE
QUIET TO SLIGHTLY UNSETTLED FOR THE NEXT THREE DAYS. THE MASS
EJECTION MENTIONED ABOVE IS NOT EXPECTED TO IMPACT THE EARTH.
III. Event Probabilities 15 DEC to 17 DEC
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 14 DEC 090 Predicted 15 DEC-17 DEC 087/085/083 90 Day Mean 14 DEC 093
V. Geomagnetic A Indices
OBSERVED AFR/AP 13 DEC 001/002 ESTIMATED AFR/AP 14 DEC 001/008 PREDICTED AFR/AP 15 DEC-17 DEC 005/008-005/008-005/005
VI. Geomagnetic Activity Probabilities 15 DEC to 17 DEC
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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