"Solar activity was very low. No flares were observed during the past 24
hours. Region 1017 (N18W50) continues to decay."

Joint USAF/NOAA Report of Solar and Geophysical Activity 19 May 2009

STATUS REPORT
Date Released: Tuesday, May 19, 2009
Source: Space Environment Center (NOAA)

Product: Report of Solar-Geophysical Activity
Issued: 2009 May 19 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 139 Issued at 2200Z on 19 May 2009

IA. Analysis of Solar Active Regions and Activity from 18/2100Z
to 19/2100Z: Solar activity was very low. No flares were observed
during the past 24 hours. Region 1017 (N18W50) continues to decay.

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

IIA. Geophysical Activity Summary 18/2100Z to 19/2100Z:
The geomagnetic field was quiet.

IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet for the forecast period (20-22 May).

III. Event Probabilities 20 May-22 May
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF green

IV. Penticton 10.7 cm Flux
Observed 19 May 072
Predicted 20 May-22 May 074/073/073
90 Day Mean 19 May 070

V. Geomagnetic A Indices
Observed Afr/Ap 18 May 002/004
Estimated Afr/Ap 19 May 005/005
Predicted Afr/Ap 20 May-22 May 005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 20 May-22 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