Status Report

Joint USAF/NOAA Report of Solar and Geophysical Activity 24 Jul 2009

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

:Product: Report of Solar-Geophysical Activity
:Issued: 2009 Jul 24 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 205 Issued at 2200Z on 24 Jul 2009
IA. Analysis of Solar Active Regions and Activity from 23/2100Z
to 24/2100Z: Solar activity has been very low. No flares were
observed during the past 24 hours. The solar disk remains spotless.
IB. Solar Activity Forecast: Solar activity is expected to be very
IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z:
The geomagnetic field was quiet to unsettled. Solar wind speeds
observed from the ACE spacecraft are averaging around 550 km/s with
minor IMF Bz fluctuations (+/-2nT).
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be predominately quiet for the next three days (25-27
July). Isolated unsettled conditions are expected for 26 July due
to a recurrent high speed stream.
III. Event Probabilities 25 Jul-27 Jul
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 24 Jul 068
Predicted 25 Jul-27 Jul 069/070/070
90 Day Mean 24 Jul 069
V. Geomagnetic A Indices
Observed Afr/Ap 23 Jul 008/008
Estimated Afr/Ap 24 Jul 006/007
Predicted Afr/Ap 25 Jul-27 Jul 005/005-007/008-005/005
VI. Geomagnetic Activity Probabilities 25 Jul-27 Jul
A. Middle Latitudes
Active 05/10/05
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 05/15/05
Minor storm 01/05/01
Major-severe storm 01/01/01

SpaceRef staff editor.