Viewing archive of Wednesday, 9 August 2000
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 2000 Aug 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 222 Issued at 2200Z on 09 AUG 2000IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z SOLAR ACTIVITY WAS LOW. SEVERAL SMALL C-CLASS FLARES
OCCURRED FROM A VARIETY OF SOURCES. SPOTLESS REGION 9111 (N10W81)
PRODUCED A NUMBER OF SUBFLARES, AS DID REGION 9114 (N11W16). REGION
9114 IS STILL THE LARGEST SUNSPOT GROUP ON THE VISIBLE DISK BUT HAS
SHOWN DECAY SINCE YESTERDAY. THE SOUTHEAST LIMB NEAR S10 HAS ALSO
BEEN ACTIVE AND APPEARS TO HAVE BEEN THE SOURCE OF YESTERDAY'S M1
FLARE. THIS RETURNING AREA IS NEAR THE LOCATION OF OLD REGION 9087
(S12, L=235) WHICH PRODUCED SEVERAL M-CLASS FLARES LAST ROTATION.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. THE GENERAL LEVEL OF ACTIVITY IS EXPECTED TO INCREASE
OVER THE NEXT FEW DAYS AS PREVIOUSLY ACTIVE LONGITUDES RETURN AT THE
EAST LIMB.
IIA. GEOPHYSICAL ACTIVITY SUMMARY 08/2100Z TO 09/2100Z:
THE GEOMAGNETIC FIELD WAS QUIET. THE GREATER THAN 2 MEV ELECTRON FLUX
WAS MODERATE.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 10 AUG to 12 AUG
| Class M | 30% | 30% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 09 AUG 182 Predicted 10 AUG-12 AUG 190/200/210 90 Day Mean 09 AUG 191
V. Geomagnetic A Indices
OBSERVED AFR/AP 08 AUG 007/009 ESTIMATED AFR/AP 09 AUG 005/008 PREDICTED AFR/AP 10 AUG-12 AUG 005/008-005/010-010/010
VI. Geomagnetic Activity Probabilities 10 AUG to 12 AUG
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 15% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
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