Joint USAF/NOAA Report of Solar and Geophysical Activity 24 Nov 2008

Product: Report of Solar-Geophysical Activity
Issued: 2008 Nov 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 329 Issued at 2200Z on 24 Nov 2008

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

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

IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field was quiet.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be unsettled to occasionally active as a recurrent coronal hole high speed stream becomes geoeffecttive. There is a slight chance for isolated minor storm activity at high latitudes. These conditions are expected to persist throughout the forecast period.

III. Event Probabilities 25 Nov-27 Nov

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

IV. Penticton 10.7 cm Flux

• Observed 24 Nov 068
• Predicted 25 Nov-27 Nov 070/070/070
• 90 Day Mean 24 Nov 068

V. Geomagnetic A Indices

• Observed Afr/Ap 23 Nov 001/003
• Estimated Afr/Ap 24 Nov 001/005
• Predicted Afr/Ap 25 Nov-27 Nov 008/008-012/012-008/008

VI. Geomagnetic Activity Probabilities 25 Nov-27 Nov

A. Middle Latitudes

• Active 15/20/15
• Minor storm 05/10/05
• Major-severe storm 01/01/01

B. High Latitudes

• Active 20/25/20
• Minor storm 10/15/10
• Major-severe storm 01/01/01