Viewing archive of Tuesday, 15 December 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 Dec 15 2201 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 349 Issued at 2200Z on 15 Dec 2009

IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z

Solar activity has been very low. Numerous low-level B-class events occurred, the largest being a B4 at 2339Z from Region 1035 (N30W05). Region 1035 has grown steadily during the past 24 hours and is currently a 20 spot Dai Beta group with an area of approximately 150 millionths.
IB. Solar Activity Forecast
Solar activity is expected to be very low to low. There is a chance for an isolated C-class event from Region 1035.
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
The geomagnetic field has been quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet for the next three days (16-18 December).
III. Event Probabilities 16 Dec to 18 Dec
Class M05%05%05%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       15 Dec 082
  Predicted   16 Dec-18 Dec  082/082/082
  90 Day Mean        15 Dec 072
V. Geomagnetic A Indices
  Observed Afr/Ap 14 Dec  004/004
  Estimated     Afr/Ap 15 Dec  000/000
  Predicted    Afr/Ap 16 Dec-18 Dec  005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 16 Dec to 18 Dec
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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