Viewing archive of Monday, 27 March 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 Mar 27 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 087 Issued at 2200Z on 27 MAR 2000IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z SOLAR ACTIVITY WAS MODERATE. REGION 8926 (S09W72)
PRODUCED AN M1/1N X-RAY EVENT AT 27/0518Z. OTHER NUMEROUS MID TO
UPPER LEVEL C-CLASS EVENTS WERE ALSO OBSERVED FROM REGION 8926.
DECAY WAS NOTED IN REGION 8926; HOWEVER, SLIGHT GROWTH WAS OBSERVED
IN REGIONS 8924 (N10E12) AND 8925 (S18E20). NEW REGIONS 8933
(N15E33), AND 8934 (N21E53) WERE NUMBERED TODAY.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE
MODERATE. SEVERAL REGIONS HAVE THE CAPABILITY TO PRODUCE MINOR
M-CLASS EVENTS DURING THE PERIOD.
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED. FURTHER ANALYSIS INDICATES NO
STRONG EARTH-DIRECTED CME IN PROGRESS FROM THE 25 MARCH EVENT. ANY
SIGNIFICANT GEOEFFECTIVE CONDITIONS FROM THE EVENT ON 25 MARCH ARE
NO LONGER EXPECTED.
III. Event Probabilities 28 MAR to 30 MAR
| Class M | 50% | 40% | 40% |
| Class X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 27 MAR 205 Predicted 28 MAR-30 MAR 205/200/195 90 Day Mean 27 MAR 177
V. Geomagnetic A Indices
OBSERVED AFR/AP 26 MAR 003/005 ESTIMATED AFR/AP 27 MAR 008/005 PREDICTED AFR/AP 28 MAR-30 MAR 010/015-008/012-008/010
VI. Geomagnetic Activity Probabilities 28 MAR to 30 MAR
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 35% | 35% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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