Viewing archive of Friday, 23 March 2001

Solar activity report

Report of Solar-Geophysical Activity 2001 Mar 23 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 082 Issued at 2200Z on 23 Mar 2001

IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z

Solar activity was low. Several small, isolated, C-class events occurred during the period. The largest was an optically uncorrelated C5 flare at 22/2300 UTC. One new region was numbered: 9393 (N20E65). Region 9393 is a large, magnetically complex spot group and should be capable of producing C and M-class flares as it continues to rotate onto the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low to moderate.
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic field was at unsettled to active conditions.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled with possible isolated active periods on the first day of the period.
III. Event Probabilities 24 Mar to 26 Mar
Class M60%60%60%
Class X10%10%10%
Proton05%05%05%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       23 Mar 180
  Predicted   24 Mar-26 Mar  180/180/180
  90 Day Mean        23 Mar 158
V. Geomagnetic A Indices
  Observed Afr/Ap 22 Mar  009/010
  Estimated     Afr/Ap 23 Mar  021/021
  Predicted    Afr/Ap 24 Mar-26 Mar  015/015-012/012-010/012
VI. Geomagnetic Activity Probabilities 24 Mar to 26 Mar
A. Middle Latitudes
Active25%20%20%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active30%25%25%
Minor storm10%10%10%
Major-severe storm05%05%05%

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