Report of Solar-Geophysical Activity

Issued: 2005 Oct 24 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 297 Issued at 2200Z on 24 Oct 2005 IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: Solar activity was at very low levels. No flares were observed during the past 24 hours. No sunspots on the visible solar disk were reported. No new regions were numbered today.

IB. Solar Activity Forecast: Solar activity is expected to remain at very low levels.

IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z:

The geomagnetic field was at quiet levels.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to remain at quiet levels.

III. Event Probabilities 25 Oct-27 Oct

Class M 01/01/01

Class X 01/01/01

Proton 01/01/01

PCAF green

IV. Penticton 10.7 cm Flux

Observed 24 Oct 073

Predicted 25 Oct-27 Oct 075/075/080

90 Day Mean 24 Oct 088

V. Geomagnetic A Indices

Observed Afr/Ap 23 Oct 002/002

Estimated Afr/Ap 24 Oct 005/012

Predicted Afr/Ap 25 Oct-27 Oct 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 25 Oct-27 Oct A. Middle Latitudes

Active 15/15/15

Minor storm 05/05/05

Major-severe storm 01/01/01

B. High Latitudes

Active 15/15/15

Minor storm 05/05/05

Major-severe storm 01/01/01