Joint USAF/NOAA Report of Solar and Geophysical Activity 29 Mar 2009

Product: Report of Solar-Geophysical Activity
Issued: 2009 Mar 29 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 088 Issued at 2200Z on 29 Mar 2009

IA. Analysis of Solar Active Regions and Activity from 28/2100Z to 29/2100Z: Solar activity was very low. No flares were observed during the past 24 hours. The visible disk was spotless.

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

IIA. Geophysical Activity Summary 28/2100Z to 29/2100Z: The geomagnetic field was quiet.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet, with isolated unsettled periods possible at high latitudes, on days one and two (30-31 March). Quiet conditions are expected at all latitudes on day three (1 April).

III. Event Probabilities 30 Mar-01 Apr

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

IV. Penticton 10.7 cm Flux

• Observed 29 Mar 071
• Predicted 30 Mar-01 Apr 072/072/072
• 90 Day Mean 29 Mar 070

V. Geomagnetic A Indices

• Observed Afr/Ap 28 Mar 002/004
• Estimated Afr/Ap 29 Mar 003/005
• Predicted Afr/Ap 30 Mar-01 Apr 005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 30 Mar-01 Apr

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