Joint USAF/NOAA Report of Solar and Geophysical Activity 30 Mar 2009

Product: Report of Solar-Geophysical Activity
Issued: 2009 Mar 30 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 089 Issued at 2200Z on 30 Mar 2009

IA. Analysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: 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 29/2100Z to 30/2100Z: The geomagnetic field was predominantly quiet. A single period of unsettled conditions was observed at mid-latitudes between 30/12-15Z.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be predominantly quiet for the next three days (31 March – 02 April).

III. Event Probabilities 31 Mar-02 Apr

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

IV. Penticton 10.7 cm Flux

• Observed 30 Mar 071
• Predicted 31 Mar-02 Apr 072/072/072
• 90 Day Mean 30 Mar 070

V. Geomagnetic A Indices

• Observed Afr/Ap 29 Mar 004/005
• Estimated Afr/Ap 30 Mar 005/005
• Predicted Afr/Ap 31 Mar-02 Apr 005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 31 Mar-02 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