Report of Solar-Geophysical Activity
Issued: 2007 Jun 27 2234 UTC
Prepared jointly by the U.S. Dept. of Commerce, NOAA,
Space Environment Center and the U.S. Air Force.
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 179 Issued at 2200Z on 28 Jun 2007
IA. Analysis of Solar Active Regions and Activity from 27/2100Z
to 28/2100Z: Solar activity was very low. Region 961 (S11E36)
remains relatively unchanged since yesterday. New Region 962
(S12E67) rotated onto the visible disk and is currently classified
as a Bxo beta sunspot group.
IB. Solar Activity Forecast: Solar activity is expected to be very
low to low. There is a slight chance for an isolated M-class flare
from Region 962.
IIA. Geophysical Activity Summary 27/2100Z to 28/2100Z:
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet to unsettled. Isolated active periods are
possible on 29-30 June due to a recurrent coronal hole high speed
stream.
III. Event Probabilities 29 Jun-01 Jul
Class M 15/15/15
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 28 Jun 075
Predicted 29 Jun-01 Jul 080/080/080
90 Day Mean 28 Jun 074
V. Geomagnetic A Indices
Observed Afr/Ap 27 Jun 005/005
Estimated Afr/Ap 28 Jun 004/005
Predicted Afr/Ap 29 Jun-01 Jul 008/008-008/010-006/008
VI. Geomagnetic Activity Probabilities 29 Jun-01 Jul
A. Middle Latitudes
Active 15/25/15
Minor storm 05/10/05
Major-severe storm 01/01/01
B. High Latitudes
Active 25/35/25
Minor storm 15/20/15
Major-severe storm 01/05/01
For current space weather conditions please refer to:
http://www.sec.noaa.gov/SWN/
http://www.sec.noaa.gov/alerts/
NOAA Space Weather Scale descriptions can be found at
www.sec.noaa.gov/NOAAscales
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