Viewing archive of Sunday, 23 March 2008

Solar activity report

Report of Solar-Geophysical Activity 2008 Mar 23 2203 UTC
Prepared by the NOAA © SWPC and processed by

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 083 Issued at 2200Z on 23 Mar 2008

IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z

Solar activity was very low. New Region 987 (S08E50) was numbered today. It grew into a Cso type with four spots and a Beta magnetic configuration before decaying to a plage region.
IB. Solar Activity Forecast
Solar activity is expected to be predominantly very low. There is a slight chance of a C-class flare from Region 987.
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic field ranged from quiet to unsettled levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled on day 1 (24 March). Unsettled to active conditions are expected on days 2 and 3 (25-26 March), occasionally reaching minor to major storm levels at high latitudes, in response to a geoeffective coronal hole high speed stream.
III. Event Probabilities 24 Mar to 26 Mar
Class M01%01%01%
Class X01%01%01%
IV. Penticton 10.7 cm Flux
  Observed       23 Mar 072
  Predicted   24 Mar-26 Mar  072/072/072
  90 Day Mean        23 Mar 072
V. Geomagnetic A Indices
  Observed Afr/Ap 22 Mar  004/005
  Estimated     Afr/Ap 23 Mar  008/008
  Predicted    Afr/Ap 24 Mar-26 Mar  005/008-010/015-020/020
VI. Geomagnetic Activity Probabilities 24 Mar to 26 Mar
A. Middle Latitudes
Minor storm05%10%15%
Major-severe storm01%05%10%
B. High Latitudes
Minor storm05%10%15%
Major-severe storm01%10%15%

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