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

Product: Report of Solar-Geophysical Activity
Issued: 2007 Jun 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 173 Issued at 2200Z on 22 Jun 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 be very low.

IIA. Geophysical Activity Summary 21/2100Z to 22/2100Z: The geomagnetic field has ranged from quiet to active due to a recurrent coronal hole high speed stream.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to range from quiet to unsettled for the forecast period, 23 – 25 June. Isolated active periods are possible.

III. Event Probabilities 23 Jun-25 Jun

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

IV. Penticton 10.7 cm Flux

• Observed 22 Jun 065
• Predicted 23 Jun-25 Jun 068/068/070
• 90 Day Mean 22 Jun 074

V. Geomagnetic A Indices

• Observed Afr/Ap 21 Jun 008/014
• Estimated Afr/Ap 22 Jun 010/015
• Predicted Afr/Ap 23 Jun-25 Jun 008/010-006/008-006/008

VI. Geomagnetic Activity Probabilities 23 Jun-25 Jun

A. Middle Latitudes

• Active 30/25/25
• Minor storm 15/10/10
• Major-severe storm 01/01/01

B. High Latitudes

• Active 35/30/30
• Minor storm 20/15/15
• Major-severe storm 01/01/01