Viewing archive of Saturday, 8 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 08 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 312 Issued at 2200Z on 08 NOV 1997IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z SOLAR ACTIVITY WAS LOW. ONLY A FEW SMALL FLARES WERE
OBSERVED SINCE YESTERDAY, NONE OF WHICH WERE ABOVE C1 LEVEL. REGION
8100 (S20W90) IS AT THE WESTERN SOLAR LIMB AND APPEARS TO BE
DEPARTING QUIETLY. REGION 8103 (N23W42) HAS SLOWED GROWTH AS A SMALL
C-CLASS SUNSPOT GROUP. REGION 8105 (S35E21) WAS NUMBERED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
C-CLASS FLARES ARE POSSIBLE. THERE IS A SMALL CHANCE OF AN M-CLASS
FLARE FROM REGION 8100 AS IT DEPARTS THE VISIBLE DISK.
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. THE GREATER THAN 100
MEV PROTON EVENT HAS ENDED [START: 06/1245Z, PEAK: 06/1640Z (51
PFU), END: 08/0250Z]. THE GREATER THAN 10 MEV PROTON EVENT REMAINS
IN PROGRESS [START: 06/1305Z, PEAK: 07/0250Z (490 PFU), CURRENT
(08/2100Z) FLUX 18 PFU]. THE PCA EVENT HAS ENDED [START: 06/1400Z
AND END: 08/1100Z]. THE LIMITED AVAILABLE SOLAR WIND DATA DOES NOT
YET SHOW EVIDENCE OF A SHOCK PASSAGE FROM THE 06 NOV X9/2B FLARE.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE PREDOMINATELY QUIET TO UNSETTLED. IF AN
INTERPLANETARY SHOCK ARRIVES AT THE EARTH FROM THE 6 NOV X9/2B FLARE
AND ASSOCIATED CME, THEN GEOMAGNETIC ACTIVITY LEVELS MAY INTENSIFY
BRIEFLY. THE GREATER THAN 10 MEV PROTON EVENT SHOULD END TOMORROW.
III. Event Probabilities 09 NOV to 11 NOV
| Class M | 10% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 08 NOV 090 Predicted 09 NOV-11 NOV 085/080/080 90 Day Mean 08 NOV 090
V. Geomagnetic A Indices
OBSERVED AFR/AP 07 NOV 028/045 ESTIMATED AFR/AP 08 NOV 005/007 PREDICTED AFR/AP 09 NOV-11 NOV 015/030-010/012-005/005
VI. Geomagnetic Activity Probabilities 09 NOV to 11 NOV
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 10% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 10% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 05% | 01% | 01% |
All times in UTC
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