Joint USAF/NOAA Report of Solar and Geophysical Activity 30 Jul 2009

:Product: Report of Solar-Geophysical Activity
:Issued: 2009 Jul 30 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 211 Issued at 2200Z on 30 Jul 2009
IA. Analysis of Solar Active Regions and Activity from 29/2100Z
to 30/2100Z: Solar activity was very low. No flares occurred during
the past 24 hours.
IB. Solar Activity Forecast: Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z:
The geomagnetic field was quiet during the past 24 hours.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet to unsettled with a slight chance for isolated
active periods on days one and two (31 July – 01 August) due to a
favorably positioned coronal hole. Quiet conditions are expected to
return on the third day (02 August).
III. Event Probabilities 31 Jul-02 Aug
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 30 Jul 068
Predicted 31 Jul-02 Aug 068/068/068
90 Day Mean 30 Jul 069
V. Geomagnetic A Indices
Observed Afr/Ap 29 Jul 002/002
Estimated Afr/Ap 30 Jul 002/003
Predicted Afr/Ap 31 Jul-02 Aug 007/007-007/007-005/005
VI. Geomagnetic Activity Probabilities 31 Jul-02 Aug
A. Middle Latitudes
Active 20/20/10
Minor storm 05/05/01
Major-severe storm 01/01/01
B. High Latitudes
Active 20/20/10
Minor storm 10/10/05
Major-severe storm 05/05/01