Viewing archive of Tuesday, 20 February 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 Feb 20 2203 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 051 Issued at 2200Z on 20 Feb 2007

IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z

Solar activity was very low. Region 942 (S11E15) and 943 (S12W10) are the two numbered regions on the visible disk. Both retain a beta magnetic configuration.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
The geomagnetic field was quiet. The greater than 2 MeV electrons at geosynchronous orbit were at high levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet levels.
III. Event Probabilities 21 Feb to 23 Feb
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       20 Feb 075
  Predicted   21 Feb-23 Feb  080/080/080
  90 Day Mean        20 Feb 082
V. Geomagnetic A Indices
  Observed Afr/Ap 19 Feb  002/003
  Estimated     Afr/Ap 20 Feb  003/005
  Predicted    Afr/Ap 21 Feb-23 Feb  005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 21 Feb to 23 Feb
A. Middle Latitudes
Active15%15%15%
Minor storm10%10%10%
Major-severe storm05%05%05%
B. High Latitudes
Active20%20%20%
Minor storm15%15%15%
Major-severe storm05%05%05%

All times in UTC

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