Viewing archive of Sunday, 28 December 2008

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 2008 Dec 28 2201 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 363 Issued at 2200Z on 28 Dec 2008

IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z

Solar activity was very low with no flares observed. The visible disk remained spotless. SOHO Lasco C2 imagery observed the first of four, weak CMEs off the northeast limb beginning at 27/0530Z. The last of these CMEs was observed in C3 imagery at 27/1818Z. None of these CMEs are expected to be geoeffective.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
The geomagnetic field was quiet at all latitudes.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet throughout the forecast period (29 - 31 December).
III. Event Probabilities 29 Dec to 31 Dec
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       28 Dec 070
  Predicted   29 Dec-31 Dec  071/071/071
  90 Day Mean        28 Dec 069
V. Geomagnetic A Indices
  Observed Afr/Ap 27 Dec  001/001
  Estimated     Afr/Ap 28 Dec  001/005
  Predicted    Afr/Ap 29 Dec-31 Dec  005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 29 Dec to 31 Dec
A. Middle Latitudes
Active01%01%01%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active01%01%01%
Minor storm01%01%01%
Major-severe storm01%01%01%

All times in UTC

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