Status Report

Joint USAF/NOAA Report of Solar and Geophysical Activity 29 Jul 2009

By SpaceRef Editor
July 29, 2009
Filed under , , ,

:Product: Report of Solar-Geophysical Activity
:Issued: 2009 Jul 29 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 210 Issued at 2200Z on 29 Jul 2009
IA. Analysis of Solar Active Regions and Activity from 28/2100Z
to 29/2100Z: Solar activity was very low. No flares occurred during
the past 24 hours. The solar disk was void of sunspots.
IB. Solar Activity Forecast: Solar activity is expected to be very
IIA. Geophysical Activity Summary 28/2100Z to 29/2100Z:
The geomagnetic field was quiet during the past 24 hours.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet for the first day (30 July). Quiet to
unsettled conditions with a slight chance for isolated active
periods are expected for the second and third day (31 July – 01
August) due to a favorably positioned coronal hole.
III. Event Probabilities 30 Jul-01 Aug
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 29 Jul 068
Predicted 30 Jul-01 Aug 068/068/068
90 Day Mean 29 Jul 069
V. Geomagnetic A Indices
Observed Afr/Ap 28 Jul 003/004
Estimated Afr/Ap 29 Jul 002/005
Predicted Afr/Ap 30 Jul-01 Aug 005/005-007/007-007/007
VI. Geomagnetic Activity Probabilities 30 Jul-01 Aug
A. Middle Latitudes
Active 05/20/20
Minor storm 01/05/05
Major-severe storm 01/01/01
B. High Latitudes
Active 05/20/20
Minor storm 01/10/10
Major-severe storm 01/05/05

SpaceRef staff editor.