Report of Solar-Geophysical Activity

Report of Solar-Geophysical Activity
Issued: 2008 Mar 20 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 080 Issued at 2200Z on 20 Mar 2008

IA. Analysis of Solar Active Regions and Activity from 19/2100Z
to 20/2100Z: Solar activity was very low. The visible solar disk
was spotless.
IB. Solar Activity Forecast: Solar activity is expected to remain
very low.
IIA. Geophysical Activity Summary 19/2100Z to 20/2100Z:
The geomagnetic field was quiet to unsettled, with a brief active
period from 12Z-15Z. The greater than 2 MeV electrons at
geosynchronous orbit reached high levels again today.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be generally quiet for the forecast period.
III. Event Probabilities 21 Mar-23 Mar
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 20 Mar 068
Predicted 21 Mar-23 Mar 070/070/070
90 Day Mean 20 Mar 072
V. Geomagnetic A Indices
Observed Afr/Ap 19 Mar 005/006
Estimated Afr/Ap 20 Mar 007/010
Predicted Afr/Ap 21 Mar-23 Mar 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 21 Mar-23 Mar
A. Middle Latitudes
Active 10/10/10
Minor storm 05/05/05
Major-severe storm 01/01/01
B. High Latitudes
Active 10/10/10
Minor storm 05/05/05
Major-severe storm 01/01/01

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