Viewing archive of Saturday, 31 March 2007

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 2007 Mar 31 2203 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 090 Issued at 2200Z on 31 Mar 2007

IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 31-2100Z

Solar activity was very low. Region 949 (N06E21) produced today's only flare event, a B2/Sf at 0143Z. The region is a small, C-type group. The remainder of the disk is spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 30-2100Z to 31-2100Z
The geomagnetic field was quiet during the past 24 hours.
IIB. Geophysical Activity Forecast
The geomagnetic field should be initially quiet tomorrow (1 April). However, late in the day an increase to unsettled to active is expected to begin and to continue through 2-3 April in response to a favorably positioned coronal hole.
III. Event Probabilities 01 Apr to 03 Apr
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       31 Mar 073
  Predicted   01 Apr-03 Apr  073/073/073
  90 Day Mean        31 Mar 078
V. Geomagnetic A Indices
  Observed Afr/Ap 30 Mar  003/004
  Estimated     Afr/Ap 31 Mar  005/005
  Predicted    Afr/Ap 01 Apr-03 Apr  007/010-015/025-012/015
VI. Geomagnetic Activity Probabilities 01 Apr to 03 Apr
A. Middle Latitudes
Active20%30%30%
Minor storm10%20%20%
Major-severe storm01%05%05%
B. High Latitudes
Active25%35%35%
Minor storm15%25%25%
Major-severe storm05%10%10%

All times in UTC

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