:Product: 0424RSGA.txt
:Issued: 2010 Apr 24 2201 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 2010
IA.  Analysis of Solar Active Regions and Activity from  23/2100Z
to 24/2100Z:  Solar activity was very low. No flares were observed
during the forecast period. The visible disk remained spotless.
IB.  Solar Activity Forecast:  Solar activity is expected to remain
very low for the next 3 days (25-27 April).
IIA.  Geophysical Activity Summary 23/2100Z to 24/2100Z:
The geomagnetic field was mostly quiet, with the exception of a brief
period of active to minor storm conditions observed between
24/00-06Z. The activity was due to nighttime sub-storming.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet on day one (25 April). Quiet to unsettled
levels are expected on days 2 and 3 (26-27 April) with isolated
active periods possible on day 3 in response to the CME observed on
22 April.
III.  Event Probabilities 25 Apr-27 Apr
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           24 Apr 074
Predicted   25 Apr-27 Apr  075/080/080
90 Day Mean        24 Apr 081
V.  Geomagnetic A Indices
Observed Afr/Ap 23 Apr  007/013
Estimated Afr/Ap 24 Apr  007/008
Predicted Afr/Ap 25 Apr-27 Apr  005/005-007/008-010/012
VI.  Geomagnetic Activity Probabilities 25 Apr-27 Apr
A.  Middle Latitudes
Active                10/15/40
Minor storm           05/05/30
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/35/45
Minor storm           10/15/35
Major-severe storm    01/01/05