Viewing archive of Wednesday, 24 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 24 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 175 Issued at 2200Z on 24 JUN 1998IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z SOLAR ACTIVITY WAS LOW. ONLY THREE SPOTTED REGIONS ARE
CURRENTLY ON THE DISC WITH MOST ACTIVITY COMING FROM REGION 8253
(N18E54). THIS REGION PRODUCED SEVERAL B AND C-CLASS EVENTS WITH
CORRESPONDING OPTICAL SUB FLARES. THE REST OF THE DISK HAS BEEN
STABLE AND UNREMARKABLE.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE WITH CONTINUED C-CLASS AND POSSIBLE ISOLATED M-CLASS
EVENTS FROM REGION 8253.
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
THE GEOMAGNETIC FIELD HAS BEEN QUIET TO ACTIVE WITH ONE PERIOD OF
MINOR STORM LEVEL ACTIVITY (K=5) OCCURRING AT 23/2100-2400UT.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO ACTIVE.
III. Event Probabilities 25 JUN to 27 JUN
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 24 JUN 105 Predicted 25 JUN-27 JUN 100/100/100 90 Day Mean 24 JUN 107
V. Geomagnetic A Indices
OBSERVED AFR/AP 23 JUN 008/010 ESTIMATED AFR/AP 24 JUN 015/018 PREDICTED AFR/AP 25 JUN-27 JUN 010/015-010/015-005/008
VI. Geomagnetic Activity Probabilities 25 JUN to 27 JUN
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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