Status Report

Joint USAF/NOAA Report of Solar and Geophysical Activity 31 May 2008

By SpaceRef Editor
June 1, 2008
Filed under , , ,

Product: Report of Solar-Geophysical Activity
Issued: 2008 May 31 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 152 Issued at 2200Z on 31 May 2008

IA. Analysis of Solar Active Regions and Activity from 30/2100Z to 31/2100Z: Solar activity was very low. The visible solar disk remains spotless.

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

IIA. Geophysical Activity Summary 30/2100Z to 31/2100Z: The geomagnetic field was quiet to unsettled. Solar wind velocities have remained elevated with speeds between 550 – 600 km/s.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels, with a chance for isolated active periods, for day one (01 June). Quiet to unsettled conditions are expected for day two (02 June), with predominately quiet levels expected for day three (03 June).

III. Event Probabilities 01 Jun-03 Jun

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

IV. Penticton 10.7 cm Flux

  • Observed 31 May 067
  • Predicted 01 Jun-03 Jun 068/068/068
  • 90 Day Mean 31 May 071

V. Geomagnetic A Indices

  • Observed Afr/Ap 30 May 007/011
  • Estimated Afr/Ap 31 May 008/010
  • Predicted Afr/Ap 01 Jun-03 Jun 008/010-005/008-005/005

VI. Geomagnetic Activity Probabilities 01 Jun-03 Jun

A. Middle Latitudes

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

B. High Latitudes

  • Active 30/25/10
  • Minor storm 10/05/05
  • Major-severe storm 05/05/01

SpaceRef staff editor.