Joint USAF/NOAA Report of Solar and Geophysical Activity 28 Nov 2008

Product: Report of Solar-Geophysical Activity
Issued: 2008 Nov 28 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 333 Issued at 2200Z on 28 Nov 2008

IA. Analysis of Solar Active Regions and Activity from 27/2100Z to 28/2100Z: Solar activity was very low. No flares were observed during the past 24 hours. The visible disk remained spotless.

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

IIA. Geophysical Activity Summary 27/2100Z to 28/2100Z: The geomagnetic field was predominantly quiet. Solar wind velocities measured at the ACE satellite ranged from 538 km/s to 454 km/s during the period.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be predominantly quiet for the next three days (29 November – 1 December).

III. Event Probabilities 29 Nov-01 Dec

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

IV. Penticton 10.7 cm Flux

• Observed 28 Nov 067
• Predicted 29 Nov-01 Dec 068/068/068
• 90 Day Mean 28 Nov 068

V. Geomagnetic A Indices

• Observed Afr/Ap 27 Nov 005/007
• Estimated Afr/Ap 28 Nov 004/005
• Predicted Afr/Ap 29 Nov-01 Dec 005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 29 Nov-01 Dec

A. Middle Latitudes

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

B. High Latitudes

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