Viewing archive of Wednesday, 5 November 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 Nov 05 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 309 Issued at 2200Z on 05 NOV 1997IA. Analysis of Solar Active Regions and Activity from 04-2100Z to 05-2100Z SOLAR ACTIVITY WAS LOW. REGION 8100 (S20W53) GENERATED
SEVERAL C-CLASS FLARES DURING THE PAST DAY. THE LARGEST FLARE
OBSERVED IN 8100 WAS A C7/1N PEAKING AT 05/0637Z. THIS REGION
REMAINS A LARGE (NEAR 1000 MILLIONTHS) COMPLEX SUNSPOT GROUP (FKC
SPOT CLASS). MIXED MAGNETIC POLARITIES AND THE DELTA SUNSPOT
CONFIGURATION PERSIST. REGION 8103 (N23W03) GREW SOMEWHAT SINCE
YESTERDAY AND PRODUCED A C2/SF AT 05/1849Z.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE
MODERATE TO HIGH. C-CLASS ACTIVITY IS EXPECTED TO REMAIN FREQUENT,
PRIMARILY IN REGION 8100 ALTHOUGH REGION 8103 MAY ALSO PRODUCE A FEW
C-CLASS FLARES. REGION 8100 REMAINS CAPABLE OF MAJOR SOLAR ACTIVITY
AND COULD PRODUCE AN M5 OR GREATER X-RAY FLARE.
IIA. Geophysical Activity Summary 04-2100Z to 05-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED AT MOST LOCATIONS.
ISOLATED ACTIVE CONDITIONS WERE OBSERVED AT SOME HIGH-LATITUDE
STATIONS. THE PROTON EVENT AT GREATER THAN 10 MEV HAS ENDED (START:
04/0830Z, PEAK-72PFU: 04/1120Z, END:05/1125Z).
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO REACH STORM CONDITIONS BY TOMORROW DUE TO THE SOLAR
ACTIVITY OF THE PAST FEW DAYS. ELEVATED GEOMAGNETIC ACTIVITY LEVELS
COULD CONTINUE THROUGH 8 NOVEMBER. ANOTHER PROTON EVENT AT GREATER
THAN 10 MEV IS LIKELY IF REGION 8100 PRODUCES ANOTHER MAJOR FLARE.
III. Event Probabilities 06 NOV to 08 NOV
| Class M | 50% | 50% | 50% |
| Class X | 10% | 10% | 10% |
| Proton | 10% | 10% | 10% |
| PCAF | YELLOW | ||
IV. Penticton 10.7 cm Flux
Observed 05 NOV 114 Predicted 06 NOV-08 NOV 115/110/105 90 Day Mean 05 NOV 089
V. Geomagnetic A Indices
OBSERVED AFR/AP 04 NOV 007/009 ESTIMATED AFR/AP 05 NOV 010/012 PREDICTED AFR/AP 06 NOV-08 NOV 025/035-050/060-030/040
VI. Geomagnetic Activity Probabilities 06 NOV to 08 NOV
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 30% | 20% |
| Minor storm | 10% | 30% | 25% |
| Major-severe storm | 05% | 15% | 15% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 35% | 25% |
| Minor storm | 10% | 35% | 30% |
| Major-severe storm | 05% | 20% | 20% |
All times in UTC
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