Joint USAF/NOAA Report of Solar and Geophysical Activity 22 Mar 2008

Product: Report of Solar-Geophysical Activity
Issued: 2008 Mar 22 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 082 Issued at 2200Z on 22 Mar 2008

IA. Analysis of Solar Active Regions and Activity from 21/2100Z to 22/2100Z: Solar activity was very low. The visible solar disk remained spotless.

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

IIA. Geophysical Activity Summary 21/2100Z to 22/2100Z: The geomagnetic field was quiet.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet for days one and two (23 March-24 March). A coronal hole high speed stream is expected to begin to become geoeffective on day three (25 March) and unsettled to active conditions are anticipated.

III. Event Probabilities 23 Mar-25 Mar

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

IV. Penticton 10.7 cm Flux

• Observed 22 Mar 070
• Predicted 23 Mar-25 Mar 070/070/070
• 90 Day Mean 22 Mar 072

V. Geomagnetic A Indices

• Observed Afr/Ap 21 Mar 004/005
• Estimated Afr/Ap 22 Mar 005/005
• Predicted Afr/Ap 23 Mar-25 Mar 005/005-005/005-010/010

VI. Geomagnetic Activity Probabilities 23 Mar-25 Mar

A. Middle Latitudes

• Active 10/10/20
• Minor storm 05/05/10
• Major-severe storm 02/02/05

B. High Latitudes

• Active 10/10/25
• Minor storm 05/05/10
• Major-severe storm 01/01/10