Viewing archive of Thursday, 1 April 2010

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 2010 Apr 01 2201 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 091 Issued at 2200Z on 01 Apr 2010

IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z

Solar activity has been very low. Region 1057 (N15W45) continues a slow decay. Region 1059 (S22E10) remains stable. An eleven degree filament disappeared near N26W31, between 01/0030-1355Z. No flares were observed during the past 24 hours.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 31-2100Z to 01-2100Z
The geomagnetic field has been at quiet to active conditions. The ACE spacecraft indicated the signature of a weak coronal hole high speed stream. Solar wind speed averaged approximately 410 km/s with IMF Bz ranging between -7/+8 nT.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be predominately quiet for the next three days (02-05 April).
III. Event Probabilities 02 Apr to 04 Apr
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       01 Apr 079
  Predicted   02 Apr-04 Apr  079/075/075
  90 Day Mean        01 Apr 083
V. Geomagnetic A Indices
  Observed Afr/Ap 31 Mar  005/004
  Estimated     Afr/Ap 01 Apr  008/012
  Predicted    Afr/Ap 02 Apr-04 Apr  005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 02 Apr to 04 Apr
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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