Viewing archive of Thursday, 26 March 1998

Solar activity report

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

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 085 Issued at 2200Z on 26 MAR 1998

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

SOLAR ACTIVITY WAS MODERATE. REGION 8185 (S25E12) PRODUCED A LONG DURATION M1/2B AT 26/1259Z. REGION 8185 IS THE LARGEST REGION ON THE DISK AND IS CURRENTLY A FHC GROUP.
IB. Solar Activity Forecast
SOLAR ACTIVITY SHOULD BE LOW TO MODERATE. REGION 8185 REMAINS CAPABLE OF PRODUCING ISOLATED M-CLASS EVENTS. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 25/2100Z TO 26/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED FROM 25/2100Z TO 26/1200Z. UNSETTLED TO ACTIVE CONDITIONS WERE OBSERVED THE REMAINDER OF THE PERIOD.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD SHOULD BE QUIET TO UNSETTLED THROUGH THE FORECAST PERIOD.
III. Event Probabilities 27 MAR to 29 MAR
Class M20%20%20%
Class X05%05%05%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       26 MAR 110
  Predicted   27 MAR-29 MAR  111/111/110
  90 Day Mean        26 MAR 099
V. Geomagnetic A Indices
OBSERVED AFR/AP 25 MAR  009/016
ESTIMATED AFR/AP 26 MAR  010/012
PREDICTED AFR/AP 27 MAR-29 MAR  010/012-010/010-010/010
VI. Geomagnetic Activity Probabilities 27 MAR to 29 MAR
A. Middle Latitudes
Active20%20%20%
Minor storm10%10%10%
Major-severe storm05%05%05%
B. High Latitudes
Active25%25%25%
Minor storm15%15%15%
Major-severe storm05%05%05%

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