Joint USAF/NOAA Report of Solar and Geophysical Activity 12 May 2009

Product: Report of Solar-Geophysical Activity
Issued: 2009 May 12 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 132 Issued at 2200Z on 12 May 2009

IA. Analysis of Solar Active Regions and Activity from 11/2100Z
to 12/2100Z: Solar activity was very low. No flares were detected.
The visible disk was spotless.

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

IIA. Geophysical Activity Summary 11/2100Z to 12/2100Z:
Geomagnetic field activity was at quiet levels.

IIB. Geophysical Activity Forecast: Geomagnetic field activity is
expected to be quiet for the next three days (13 – 15 May).

III. Event Probabilities 13 May-15 May
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green

IV. Penticton 10.7 cm Flux
Observed 12 May 074
Predicted 13 May-15 May 073/073/073
90 Day Mean 12 May 070

V. Geomagnetic A Indices
Observed Afr/Ap 11 May 002/004
Estimated Afr/Ap 12 May 005/005
Predicted Afr/Ap 13 May-15 May 005/005-005/005-008/008

VI. Geomagnetic Activity Probabilities 13 May-15 May
A. Middle Latitudes
Active 05/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 10/10/10
Minor storm 01/01/01
Major-severe storm 01/01/01