Joint USAF/NOAA Report of Solar and Geophysical Activity 24 April 2011

:Product: Report of Solar-Geophysical Activity
:Issued: 2011 Apr 24 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 114 Issued at 2200Z on 24 Apr 2011
IA. Analysis of Solar Active Regions and Activity from 23/2100Z
to 24/2100Z: Solar activity was low. Regions 1193 (N18W73) and 1195
(S15W01) remained stable and quiet.
IB. Solar Activity Forecast: Solar activity is expected to be low
for the next 3 days (25-27 April).
IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z:
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be mostly quiet for the next 3 days (25-27 April).
III. Event Probabilities 25 Apr-27 Apr
Class M 10/10/10
Class X 05/05/05
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 24 Apr 117
Predicted 25 Apr-27 Apr 115/115/112
90 Day Mean 24 Apr 106
V. Geomagnetic A Indices
Observed Afr/Ap 23 Apr 004/006
Estimated Afr/Ap 24 Apr 003/005
Predicted Afr/Ap 25 Apr-27 Apr 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 25 Apr-27 Apr
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