Viewing archive of Monday, 26 October 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 Oct 26 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 299 Issued at 2200Z on 26 OCT 1998IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z SOLAR ACTIVITY HAS BEEN LOW. THREE C-CLASS X-RAY EVENTS
OCCURRED DURING THE PAST 24 HOURS, ONLY ONE OF WHICH WAS CORRELATED,
A C2/SF FROM REGION 8369 AT 26/1820Z. AN ERUPTIVE PROMINENCE ON THE
LIMB (EPL) AT N24 BEGAN AT26/1711Z, AND REACHED A MAXIMUM EXENT OF
0.27RV.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW,
WITH CONTINUED C-CLASS X-RAY ACTIVITY FROM REGION 8369.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
THE GEOMAGNETIC FIELD HAS BEEN QUIET TO UNSETTLED FOR THE PAST 24
HOURS. THE GREATER THAN 2 MEV ELECTRON FLUX CONTINUES IN THE HIGH
RANGE.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED FOR THE NEXT THREE DAYS.
III. Event Probabilities 27 OCT to 29 OCT
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 26 OCT 104 Predicted 27 OCT-29 OCT 102/100/100 90 Day Mean 26 OCT 131
V. Geomagnetic A Indices
OBSERVED AFR/AP 25 OCT 010/016 ESTIMATED AFR/AP 26 OCT 008/008 PREDICTED AFR/AP 27 OCT-29 OCT 010/010-010/010-010/010
VI. Geomagnetic Activity Probabilities 27 OCT to 29 OCT
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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