Viewing archive of Thursday, 1 October 2009

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 2009 Oct 01 2201 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 274 Issued at 2200Z on 01 Oct 2009

IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 01-2100Z

Solar activity was very low. Region 1027 (N24W89) produced a B7 flare at 01/0255Z.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 30-2100Z to 01-2100Z
The geomagnetic field was quiet. ACE solar wind data indicate a continued influence from a weak coronal hole high speed stream. Average solar wind velocities are around 350 km/s, with low density and Bz fluctuations from +/- 6 nT.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be predominantly quiet for the next three days (02-04 October) as the high speed stream subsides.
III. Event Probabilities 02 Oct to 04 Oct
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       01 Oct 072
  Predicted   02 Oct-04 Oct  070/070/069
  90 Day Mean        01 Oct 069
V. Geomagnetic A Indices
  Observed Afr/Ap 30 Sep  005/004
  Estimated     Afr/Ap 01 Oct  003/005
  Predicted    Afr/Ap 02 Oct-04 Oct  005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 02 Oct to 04 Oct
A. Middle Latitudes
Active05%05%05%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active05%05%05%
Minor storm01%01%01%
Major-severe storm01%01%01%

All times in UTC

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