Viewing archive of Tuesday, 1 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 01 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 214 Issued at 2200Z on 01 AUG 2000IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z SOLAR ACTIVITY HAS BEEN LOW. THE LARGEST EVENT WAS AN
OPTICALLY UNCORRELATED C2 EVENT WITH AN ASSOCIATED TYPE II RADIO
SWEEP AT 01/0346Z. THE MOST LIKELY SOURCE OF THIS ACTIVITY IS FROM
AN ACTIVE REGION JUST BEHIND THE NORTHEAST LIMB. REGION 9104
(S19W01) EXHIBITED SOME GROWTH TODAY, AND NEW REGION 9111 (N10E28)
WAS NUMBERED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO PERSIST
AT LOW LEVELS THROUGH DAY TWO, WITH AN ISOLATED CHANCE OF MODERATE
FLARES. A GREATER CHANCE OF MODERATE ACTIVITY IS EXPECTED BY DAY
THREE.
IIA. GEOPHYSICAL ACTIVITY SUMMARY 31/2100Z TO 01/2100Z:
THE GEOMAGNETIC FIELD RANGED FROM QUIET TO MINOR STORM LEVELS. AN
ISOLATED PERIOD OF MINOR STORMING WAS OBSERVED AT HIGHER LATITUDES
DURING 31/2100-2400Z.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE PREDOMINANTLY UNSETTLED TO ACTIVE THROUGH DAY ONE.
QUIET TO UNSETTLED CONDITIONS, WITH A POSSIBILITY OF ISOLATED
ACTIVE PERIODS, ARE EXPECTED FOR DAYS TWO AND THREE.
III. Event Probabilities 02 AUG to 04 AUG
| Class M | 20% | 20% | 30% |
| Class X | 01% | 01% | 05% |
| Proton | 01% | 01% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 01 AUG 149 Predicted 02 AUG-04 AUG 155/165/180 90 Day Mean 01 AUG 189
V. Geomagnetic A Indices
OBSERVED AFR/AP 31 JUL 017/019 ESTIMATED AFR/AP 01 AUG 014/018 PREDICTED AFR/AP 02 AUG-04 AUG 014/012-010/012-010/010
VI. Geomagnetic Activity Probabilities 02 AUG to 04 AUG
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 25% | 25% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 30% | 30% |
| Minor storm | 15% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
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