Joint USAF/NOAA Report of Solar and Geophysical Activity 10 May 2007

Product: Report of Solar-Geophysical Activity
Issued: 2007 May 10 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 130 Issued at 2200Z on 10 May 2007

IA. Analysis of Solar Active Regions and Activity from 09/2100Z to 10/2100Z: Solar Activity was very low.

IB. Solar Activity Forecast: Solar activity is expected to be very low to low. A C-class flare is possible in Region 955 (S09E08).

IIA. Geophysical Activity Summary 09/2100Z to 10/2100Z: The geomagnetic field was quiet.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet.

III. Event Probabilities 11 May-13 May

• Class M 05/05/05
• Class X 01/01/01
• Proton 01/01/01
• PCAF Green

IV. Penticton 10.7 cm Flux

• Observed 10 May 071
• Predicted 11 May-13 May 070/070/070
• 90 Day Mean 10 May 074

V. Geomagnetic A Indices

• Observed Afr/Ap 09 May 003/005
• Estimated Afr/Ap 10 May 002/005
• Predicted Afr/Ap 11 May-13 May 005/005-005/005-005/008

VI. Geomagnetic Activity Probabilities 11 May-13 May

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 10/10/10
• Major-severe storm 05/05/05