Report of Solar-Geophysical Activity

Issued: 2006 Jan 25 2200 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 025 Issued at 2200Z on 25 Jan 2006 IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity was very low. Region 848 (S18W52) produced several B-class flares as it decayed from an area of 320 down to 200 millionths. No new regions were numbered today.

IB. Solar Activity Forecast: Solar activity is expected to be very low.

IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z:

The geomagnetic field was quiet to unsettled.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled for the next three days (26 - 28 January).

III. Event Probabilities 26 Jan-28 Jan

Class M 05/05/05

Class X 01/01/01

Proton 01/01/01

PCAF green

IV. Penticton 10.7 cm Flux

Observed 25 Jan 089

Predicted 26 Jan-28 Jan 090/090/085

90 Day Mean 25 Jan 087

V. Geomagnetic A Indices

Observed Afr/Ap 24 Jan 006/007

Estimated Afr/Ap 25 Jan 004/005

Predicted Afr/Ap 26 Jan-28 Jan 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 26 Jan-28 Jan A. Middle Latitudes

Active 15/15/15

Minor storm 01/01/01

Major-severe storm 01/01/01

B. High Latitudes

Active 20/20/20

Minor storm 05/05/05

Major-severe storm 01/01/01