Joint USAF/NOAA Report of Solar and Geophysical Activity 24 Mar 2009

Product: Report of Solar-Geophysical Activity
Issued: 2009 Mar 24 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 083 Issued at 2200Z on 24 Mar 2009

IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: Solar activity was very low. No flares occurred during the past 24 hours and the solar disk continues to be void of sunspots.

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 during the past 24 hours.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled for the next two days (25-26 March). Conditions are expected to be quiet on the third day (27 March).

III. Event Probabilities 25 Mar-27 Mar

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

IV. Penticton 10.7 cm Flux

• Observed 24 Mar 069
• Predicted 25 Mar-27 Mar 070/070/070
• 90 Day Mean 24 Mar 070

V. Geomagnetic A Indices

• Observed Afr/Ap 23 Mar 002/003
• Estimated Afr/Ap 24 Mar 007/008
• Predicted Afr/Ap 25 Mar-27 Mar 007/008-007/008-005/005

VI. Geomagnetic Activity Probabilities 25 Mar-27 Mar

A. Middle Latitudes

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

B. High Latitudes

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