Viewing archive of Thursday, 19 September 1996
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 1996 Sep 19 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 263 Issued at 2200Z on 19 SEP 1996IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z SOLAR ACTIVITY REMAINED VERY LOW. A BROAD DIFUSE
AREA OF X-RAY EMISSION IS VISIBLE NEAR S10E90 WHERE OLD REGION
7986 IS RETURNING. NO SPOTS AND ONLY FAINT PLAGE ARE VISIBLE
IN WHITE LIGHT AND H-ALPHA.
IB. Solar Activity Forecast
SOLAR ACTIVITY SHOULD REMAIN
VERY LOW FOR THE NEXT THREE DAYS.
IIA. Geophysical Activity Summary 18-2100Z to 19-2100Z
THE GEOMAGNETIC FIELD WAS PREDOMINANTLY QUIET TO UNSETTLED.
ACTIVE CONDITIONS WERE OBSERVED AT SOME SITES BETWEEN
19/1500-1800Z. RECENT SOLAR WIND DATA SHOW AN INCREASE IN
DENSITY WITH SLIGHTLY SLOWER WIND SPEED THAN IN PREVIOUS
DAYS. ENERGETIC ELECTRON FLUXES AT GEOSYNCHRONOUS ORBIT
WERE MODERATE TO HIGH.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
FORECAST TO BE PREDOMINANTLY QUIET TO UNSETTLED FOR THE NEXT
THREE DAYS. ISOLATED ACTIVE PERIODS ARE PROBABLE DURING THAT
TIME. SOME HIGH LATITUDE SITES MAY EXPERIENCE OCCASIONAL
MINOR STORMING.
III. Event Probabilities 20 SEP to 22 SEP
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 19 SEP 069 Predicted 20 SEP-22 SEP 070/070/071 90 Day Mean 19 SEP 071
V. Geomagnetic A Indices
OBSERVED AFR/AP 18 SEP 017/018 ESTIMATED AFR/AP 19 SEP 010/015 PREDICTED AFR/AP 20 SEP-22 SEP 012/015-012/015-012/015
VI. Geomagnetic Activity Probabilities 20 SEP to 22 SEP
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 10% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
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