Status Report

Joint USAF/NOAA Report of Solar and Geophysical Activity 25 Mar 2009

By SpaceRef Editor
March 25, 2009
Filed under , , ,

Product: Report of Solar-Geophysical Activity
Issued: 2009 Mar 25 2200 UTC
Prepared jointly by the U.S. Dept. of Commerce, NOAA,
Space Weather Prediction Center and the U.S. Air Force.

Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 084 Issued at 2200Z on 25 Mar 2009

IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity was very low. No flares were observed and the disk is spotless.

IB. Solar Activity Forecast: Solar activity is expected to be very low.

IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z: The geomagnetic field was quiet to unsettled with isolated active periods from 25/ 0000 to 0600. The increase in activity was due to a rise in solar wind speed and intermittent southward Bz.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled with isolated active periods possible on days one and two (26-27 March). Day three (28 March) is expected to be quiet.

III. Event Probabilities 26 Mar-28 Mar

  • Class M 01/01/01
  • Class X 01/01/01
  • Proton 01/01/01
  • PCAF green

IV. Penticton 10.7 cm Flux

  • Observed 25 Mar 069
  • Predicted 26 Mar-28 Mar 070/070/072
  • 90 Day Mean 25 Mar 070

V. Geomagnetic A Indices

  • Observed Afr/Ap 24 Mar 006/008
  • Estimated Afr/Ap 25 Mar 007/010
  • Predicted Afr/Ap 26 Mar-28 Mar 007/010-007/008-005/005

VI. Geomagnetic Activity Probabilities 26 Mar-28 Mar

A. Middle Latitudes

  • Active 10/10/05
  • Minor storm 01/01/01
  • Major-severe storm 01/01/01

B. High Latitudes

  • Active 20/15/10
  • Minor storm 05/05/01
  • Major-severe storm 01/01/01

SpaceRef staff editor.