Viewing archive of Thursday, 26 February 1998

Solar activity report

Report of Solar-Geophysical Activity 1998 Feb 26 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 057 Issued at 2200Z on 26 FEB 1998

IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z

SOLAR ACTIVITY WAS VERY LOW. REGION 8167 (S26W09) PRODUCED A B7/SF WITH SEVERAL ERUPTIVE CENTERS AT 26/1554Z. REGION 8164 (N16W25), CURRENTLY THE LARGEST REGION ON THE VISIBLE DISK, REMAINED QUIET WITH AN 18 SPOT DAI BETA MAG CLASS. REMAINING REGIONS WERE STABLE.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW. THOUGH QUIET FOR THE PAST 24 HOURS, REGION 8164 MAINTAINS POTENTIAL FOR C-CLASS ACTIVITY. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 25/2100Z TO 26/2100Z: THE GEOMAGNETIC FIELD WAS QUIET.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO REMAIN QUIET FOR THE NEXT 24 HOURS. MOSTLY QUIET TO UNSETTLED CONDITIONS ARE EXPECTED FOR THE REMAINDER OF THE PERIOD WITH A SMALL CHANCE FOR ACTIVE PERIODS LATE ON THE 27TH THROUGH 28TH.
III. Event Probabilities 27 FEB to 01 MAR
Class M05%05%05%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       26 FEB 093
  Predicted   27 FEB-01 MAR  093/092/090
  90 Day Mean        26 FEB 096
V. Geomagnetic A Indices
OBSERVED AFR/AP 25 FEB  001/004
ESTIMATED AFR/AP 26 FEB  002/005
PREDICTED AFR/AP 27 FEB-01 MAR  005/008-010/010-008/008
VI. Geomagnetic Activity Probabilities 27 FEB to 01 MAR
A. Middle Latitudes
Active15%15%15%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active15%20%20%
Minor storm01%05%05%
Major-severe storm01%01%01%

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