Report of Solar-Geophysical Activity

Issued: 2006 Jul 26 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 207 Issued at 2200Z on 26 Jul 2006

IA. Analysis of Solar Active Regions and Activity from 25/2100Z to 26/2100Z: Solar activity was very low. Region 901 (N06E15) has produced only B-class activity.

IB. Solar Activity Forecast: Solar activity is expected to be very low for the next three days (27 - 29 July).

IIA. Geophysical Activity Summary 25/2100Z to 26/2100Z:

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 (27 - 29 July). A coronal hole in the northern hemisphere is not expected to be geoeffective, but may produce isolated active periods on 27 July.

III. Event Probabilities 27 Jul-29 Jul

Class M 01/01/01

Class X 01/01/01

Proton 01/01/01

PCAF green

IV. Penticton 10.7 cm Flux

Observed 26 Jul 075

Predicted 27 Jul-29 Jul 075/075/075

90 Day Mean 26 Jul 079

V. Geomagnetic A Indices

Observed Afr/Ap 25 Jul 005/006

Estimated Afr/Ap 26 Jul 005/008

Predicted Afr/Ap 27 Jul-29 Jul 005/008-005/005-005/005 VI. Geomagnetic Activity Probabilities 27 Jul-29 Jul A. Middle Latitudes

Active 15/15/15

Minor storm 05/05/05

Major-severe storm 01/01/01

B. High Latitudes

Active 20/20/20

Minor storm 10/05/05

Major-severe storm 01/01/01