Viewing archive of Monday, 1 June 1998
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 1998 Jun 01 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 152 Issued at 2200Z on 01 JUN 1998IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z SOLAR ACTIVITY WAS VERY LOW. THE TWO MAIN REGIONS: 8227
(N21W21) AND 8230 (S20E35) SHOWED VERY LITTLE CHANGE OR ACTIVITY
DURING THE DAY. BOTH REGIONS HAVE "DSO-BETA" SPOT GROUPS. REGION
8227 PRODUCED A SF AT 01/0700Z WITH NO CORRELATED X-RAY ACTIVITY.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
ISOLATED C-CLASS FLARES ARE POSSIBLE FROM REGIONS 8227 AND 8230.
IIA. Geophysical Activity Summary 31-2100Z to 01-2100Z
GEOMAGNETIC ACTIVITY WAS QUIET. THE GREATER THAN 2 MEV ELECTRON FLUX
AT GEOSYNCHRONOUS ORBIT EXCEEDED THRESHOLD LEVEL OF 1000PFU AT
01/1530Z AND HAS REMAINED ELEVATED FOR THE REST OF THE REPORTING
PERIOD.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET.
III. Event Probabilities 02 JUN to 04 JUN
| Class M | 10% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 01 JUN 100 Predicted 02 JUN-04 JUN 098/098/100 90 Day Mean 01 JUN 108
V. Geomagnetic A Indices
OBSERVED AFR/AP 31 MAY 004/007 ESTIMATED AFR/AP 01 JUN 005/007 PREDICTED AFR/AP 02 JUN-04 JUN 005/008-007/008-007/008
VI. Geomagnetic Activity Probabilities 02 JUN to 04 JUN
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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