Joint USAF/NOAA Report of Solar and Geophysical Activity 22 Jul 2007

Product: Report of Solar-Geophysical Activity

Issued: 2007 Jul 22 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 203 Issued at 2200Z on 22 Jul 2007

IA. Analysis of Solar Active Regions and Activity from 21/2100Z
to 22/2100Z: Solar activity was very low. The visible disk remains
spotless.

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

IIA. Geophysical Activity Summary 21/2100Z to 22/2100Z:
The geomagnetic field was quiet.

IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to remain quiet for the next three days (23-25 July).

III. Event Probabilities 23 Jul-25 Jul

• Class M 01/01/01
• Class X 01/01/01
• Proton 01/01/01
• PCAF Green

IV. Penticton 10.7 cm Flux

• Observed 22 Jul 066
• Predicted 23 Jul-25 Jul 068/068/068
• 90 Day Mean 22 Jul 074

V. Geomagnetic A Indices

• Observed Afr/Ap 21 Jul 010/012
• Estimated Afr/Ap 22 Jul 003/005
• Predicted Afr/Ap 23 Jul-25 Jul 005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 23 Jul-25 Jul

A. Middle Latitudes

• Active 10/10/10
• 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

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