Viewing archive of Friday, 4 July 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 Jul 04 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 185 Issued at 2200Z on 04 JUL 1997IA. Analysis of Solar Active Regions and Activity from 03-2100Z to 04-2100Z SOLAR ACTIVITY WAS VERY LOW. A FIVE-DEGREE FILAMENT
NEAR S28E02 DISAPPEARED BETWEEN 1713-1716Z AND WAS PROBABLY
ASSOCIATED WITH A WEAK, LONG-DURATION EVENT SIGNATURE SEEN BY THE
GOES X-RAY SENSOR FROM 1717-1738Z.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 03-2100Z to 04-2100Z
THE GEOMAGNETIC FIELD WAS PREDOMINANTLY QUIET. THERE WERE SOME VERY
BRIEF UNSETTLED TO ACTIVE PERIODS AT A FEW HIGH-LATITUDE SITES.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE PREDOMINANTLY UNSETTLED FOR THE NEXT TWO DAYS, AND
SHOULD BE QUIET TO UNSETTLED ON THE THIRD DAY.
III. Event Probabilities 05 JUL to 07 JUL
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 04 JUL 070 Predicted 05 JUL-07 JUL 070/070/070 90 Day Mean 04 JUL 073
V. Geomagnetic A Indices
OBSERVED AFR/AP 03 JUL 009/007 ESTIMATED AFR/AP 04 JUL 007/005 PREDICTED AFR/AP 05 JUL-07 JUL 012/010-012/012-007/008
VI. Geomagnetic Activity Probabilities 05 JUL to 07 JUL
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 15% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 10% |
| Minor storm | 15% | 15% | 05% |
| Major-severe storm | 05% | 05% | 01% |
All times in UTC
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