Viewing archive of Monday, 16 April 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 Apr 16 2203 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 106 Issued at 2200Z on 16 Apr 2007

IA. Analysis of Solar Active Regions and Activity from 15-2100Z to 16-2100Z

Solar activity was very low. No new regions were numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 15-2100Z to 16-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be predominately quiet. Quiet to unsettled conditions are expected on 19 April in response to a favorably positioned coronal hole.
III. Event Probabilities 17 Apr to 19 Apr
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       16 Apr 069
  Predicted   17 Apr-19 Apr  070/070/070
  90 Day Mean        16 Apr 075
V. Geomagnetic A Indices
  Observed Afr/Ap 15 Apr  002/004
  Estimated     Afr/Ap 16 Apr  005/005
  Predicted    Afr/Ap 17 Apr-19 Apr  005/005-005/005-008/010
VI. Geomagnetic Activity Probabilities 17 Apr to 19 Apr
A. Middle Latitudes
Active10%10%15%
Minor storm05%05%10%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%20%
Minor storm05%05%15%
Major-severe storm01%01%05%

All times in UTC

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