Joint USAF/NOAA Report of Solar and Geophysical Activity 15 Aug 2009
:Product: Report of Solar-Geophysical Activity
:Issued: 2009 Aug 15 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 227 Issued at 2200Z on 15 Aug 2009
IA. Analysis of Solar Active Regions and Activity from 14/2100Z
to 15/2100Z: Solar activity was very low. No flares were observed.
IB. Solar Activity Forecast: Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 14/2100Z to 15/2100Z:
Geomagnetic field activity was at quiet levels.
IIB. Geophysical Activity Forecast: Geomagnetic field activity is
expected to be at quiet levels during days 1 – 2 (16 – 17 August).
Activity is expected to increase to unsettled levels on day 3 (18
August) as a recurrent coronal hole high-speed stream begins to
disturb the field.
III. Event Probabilities 16 Aug-18 Aug
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 15 Aug 068
Predicted 16 Aug-18 Aug 068/068/068
90 Day Mean 15 Aug 068
V. Geomagnetic A Indices
Observed Afr/Ap 14 Aug 002/004
Estimated Afr/Ap 15 Aug 002/005
Predicted Afr/Ap 16 Aug-18 Aug 005/005-005/005-007/007
VI. Geomagnetic Activity Probabilities 16 Aug-18 Aug
A. Middle Latitudes
Active 05/05/10
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 05/05/15
Minor storm 01/01/01
Major-severe storm 01/01/01