Viewing archive of Wednesday, 27 February 2008

Solar activity report

Report of Solar-Geophysical Activity 2008 Feb 27 2203 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 058 Issued at 2200Z on 27 Feb 2008

IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z

Solar activity was very low.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic field was quiet to unsettled. Solar wind measurements at the ACE spacecraft indicated signatures consistent with a co-rotating interaction region around 27/1400Z. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels today.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at unsettled to active conditions with isolated minor storm levels at high latitudes for 28-29 February due to a coronal hole high speed stream. Predominately unsettled conditions are expected for 01 March.
III. Event Probabilities 28 Feb to 01 Mar
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       27 Feb 071
  Predicted   28 Feb-01 Mar  070/070/070
  90 Day Mean        27 Feb 075
V. Geomagnetic A Indices
  Observed Afr/Ap 26 Feb  002/003
  Estimated     Afr/Ap 27 Feb  008/010
  Predicted    Afr/Ap 28 Feb-01 Mar  015/015-012/015-010/010
VI. Geomagnetic Activity Probabilities 28 Feb to 01 Mar
A. Middle Latitudes
Active25%20%15%
Minor storm10%05%05%
Major-severe storm05%01%01%
B. High Latitudes
Active30%30%20%
Minor storm15%15%10%
Major-severe storm05%05%05%

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