Joint USAF/NOAA Report of Solar and Geophysical Activity 24 Jun 2007

Product: Report of Solar-Geophysical Activity
Issued: 2007 Jun 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 175 Issued at 2200Z on 24 Jun 2007

IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: Solar activity was very low. The visible disk remains spotless.

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

IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field was quiet to unsettled due to a recurrent coronal hole high speed stream.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled June 25 and then quiet for June 26-27.

III. Event Probabilities 25 Jun-27 Jun

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

IV. Penticton 10.7 cm Flux

• Observed 24 Jun 067
• Predicted 25 Jun-27 Jun 068/068/070
• 90 Day Mean 24 Jun 074

V. Geomagnetic A Indices

• Observed Afr/Ap 23 Jun 008/011
• Estimated Afr/Ap 24 Jun 006/008
• Predicted Afr/Ap 25 Jun-27 Jun 006/006-003/006-003/005

VI. Geomagnetic Activity Probabilities 25 Jun-27 Jun

A. Middle Latitudes

• Active 25/15/15
• Minor storm 10/05/05
• Major-severe storm 01/01/01

B. High Latitudes

• Active 30/20/20
• Minor storm 25/10/10
• Major-severe storm 05/01/01