Solar activity report

Viewing archive of Tuesday, 29 May 2001

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 2001 May 29 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 149 Issued at 2200Z on 29 May 2001

IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z

Solar activity has been low. Region 9475 (N18E34) produced the only minor C-class events. This region has doubled its growth since yesterday with an area of 100 millionths and has developed a delta configuration within the trailing portion of the spot group.

IB. Solar Activity Forecast

Solar activity is expected to be low. Additional C-class flares are likely.

IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z

The geomagnetic field has been quiet to active.

IIB. Geophysical Activity Forecast

The geomagnetic field is expected to be quiet to unsettled for the forecast period.

III. Event Probabilities 30 May to 01 Jun

Class M	20%	20%	20%
Class X	01%	01%	01%
Proton	01%	01%	01%
PCAF	green

IV. Penticton 10.7 cm Flux

  Observed       29 May 139
  Predicted   30 May-01 Jun  135/135/135
  90 Day Mean        29 May 169

V. Geomagnetic A Indices

  Observed Afr/Ap 28 May  014/018
  Estimated     Afr/Ap 29 May  010/012
  Predicted    Afr/Ap 30 May-01 Jun  008/010-008/010-008/010

VI. Geomagnetic Activity Probabilities 30 May to 01 Jun

A. Middle Latitudes
Active	15%	15%	15%
Minor storm	05%	05%	05%
Major-severe storm	01%	01%	01%

B. High Latitudes
Active	20%	20%	20%
Minor storm	05%	05%	05%
Major-severe storm	01%	01%	01%

All times in UTC

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