Viewing archive of Saturday, 14 March 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 Mar 14 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 073 Issued at 2200Z on 14 MAR 1998IA. Analysis of Solar Active Regions and Activity from 13-2100Z to 14-2100Z SOLAR ACTIVITY WAS LOW. REGION 8173 (S18W96) PRODUCED A
C5/SF AT 13/2108Z AS IT ROUNDED THE WEST LIMB. AN ASSOCIATED CME WAS
OBSERVED BUT MATERIAL APPEARS TO BE MOSTLY WESTWARD DIRECTED. REGION
8179 (S22E09) EXHIBITED IMPRESSIVE GROWTH IN THE PAST 24 HOURS AND
IS NOW A D-TYPE SPOT GROUP WITH MODERATE MAGNETIC COMPLEXITY. SPOT
COUNT WENT FROM 12 TO 38 IN JUST 12 HOURS. THIS REGION PRODUCED
NUMEROUS SUBFLARES THIS PERIOD, MOST WITH HIGH B OR LOW C-CLASS
X-RAYS. REGION 8176 DECAYED SLIGHTLY AND IS NOW A 15 SPOT E-TYPE
GROUP. REMAINING REGIONS WERE QUIET.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. AT ITS PRESENT GROWTH RATE, REGION 8179 WILL QUICKLY
DEVELOP POTENTIAL FOR M-CLASS ACTIVITY.
IIA. Geophysical Activity Summary 13-2100Z to 14-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. THE GREATER THAN 2 MEV
ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT REMAINED HIGH.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO REMAIN QUIET TO UNSETTLED.
III. Event Probabilities 15 MAR to 17 MAR
| Class M | 35% | 40% | 40% |
| Class X | 05% | 10% | 10% |
| Proton | 05% | 10% | 10% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 14 MAR 120 Predicted 15 MAR-17 MAR 120/122/122 90 Day Mean 14 MAR 095
V. Geomagnetic A Indices
OBSERVED AFR/AP 13 MAR 012/013 ESTIMATED AFR/AP 14 MAR 010/008 PREDICTED AFR/AP 15 MAR-17 MAR 008/005-008/008-010/008
VI. Geomagnetic Activity Probabilities 15 MAR to 17 MAR
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 20% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
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