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

Product: Report of Solar-Geophysical Activity
Issued: 2009 Apr 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 119 Issued at 2200Z on 29 Apr 2009

IA. Analysis of Solar Active Regions and Activity from 28/2100Z
to 29/2100Z: Solar activity was very low. No flares were observed.
New Region 1016 (S08W64) was numbered during the period. The region
formed on the disk and is a Cao beta spot group.

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

IIA. Geophysical Activity Summary 28/2100Z to 29/2100Z:
The geomagnetic field was quiet.

IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be at quiet levels through the forecast period (30 April
– 02 May).

III. Event Probabilities 30 Apr-02 May
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green

IV. Penticton 10.7 cm Flux
Observed 29 Apr 070
Predicted 30 Apr-02 May 070/070/070
90 Day Mean 29 Apr 070

V. Geomagnetic A Indices
Observed Afr/Ap 28 Apr 002/002
Estimated Afr/Ap 29 Apr 004/004
Predicted Afr/Ap 30 Apr-02 May 005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 30 Apr-02 May
A. Middle Latitudes
Active 05/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 05/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01