Joint USAF/NOAA Report of Solar and Geophysical Activity 25 Feb 2009

Product: Report of Solar-Geophysical Activity
Issued: 2009 Feb 25 2200 UTC
Prepared jointly by the U.S. Dept. of Commerce, NOAA,
Space Weather Prediction Center and the U.S. Air Force.

Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 056 Issued at 2200Z on 25 Feb 2009

IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity was very low with no flares observed. Region 1013 (N26E07) was quiet and stable during the period.

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

IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z: The geomagnetic field was quiet.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be predominately quiet for the next three days (26 – 28 February).

III. Event Probabilities 26 Feb-28 Feb

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

IV. Penticton 10.7 cm Flux

• Observed 25 Feb 071
• Predicted 26 Feb-28 Feb 070/070/070
• 90 Day Mean 25 Feb 070

V. Geomagnetic A Indices

• Observed Afr/Ap 24 Feb 006/006
• Estimated Afr/Ap 25 Feb 004/004
• Predicted Afr/Ap 26 Feb-28 Feb 005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 26 Feb-28 Feb

A. Middle Latitudes

• Active 05/05/05
• Minor storm 01/01/01
• Major-severe storm 01/01/01

B. High Latitudes

• Active 10/10/10
• Minor storm 01/01/01
• Major-severe storm 01/01/01