Viewing archive of Monday, 5 July 1999
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 1999 Jul 05 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 186 Issued at 2200Z on 05 JUL 1999IA. Analysis of Solar Active Regions and Activity from 04-2100Z to 05-2100Z SOLAR ACTIVITY WAS MODERATE. REGION 8614 (N18E14)
PRODUCED A LONG DURATION C2/SF FLARE AT 05/0446Z. REGION 8611
(S26W45) HAD THE LARGEST FLARE OF THE PERIOD WITH A M1/1F AT
05/1848Z. REGIONS 8614 AND 8611 WERE RESPONSIBLE FOR SEVERAL C-CLASS
SUBFLARES. A C9 AT 04/2328Z OCCURRED WHICH WAS NOT CORRELATED
OPTICALLY. A 13 DEGREE LONG FILAMENT DISAPPEARED BETWEEN
04/0917-2240Z AT N12E36.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE WITH ISOLATED M-CLASS FLARES POSSIBLE.
IIA. Geophysical Activity Summary 04-2100Z to 05-2100Z
THE GEOMAGNETIC FIELD WAS QUIET.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED THROUGH THE FORECAST PERIOD.
III. Event Probabilities 06 JUL to 08 JUL
| Class M | 60% | 60% | 60% |
| Class X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 05 JUL 174 Predicted 06 JUL-08 JUL 175/175/170 90 Day Mean 05 JUL 150
V. Geomagnetic A Indices
OBSERVED AFR/AP 04 JUL 000/004 ESTIMATED AFR/AP 05 JUL 005/012 PREDICTED AFR/AP 06 JUL-08 JUL 005/014-005/008-005/008
VI. Geomagnetic Activity Probabilities 06 JUL to 08 JUL
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 05% | 05% | 05% |
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