Joint USAF/NOAA Report of Solar and Geophysical Activity 21 Mar 2007
Product: Report of Solar-Geophysical Activity
Issued: 2007 Mar 21 2200 UTC
Prepared jointly by the U.S. Dept. of Commerce, NOAA,
Space Environment Center and the U.S. Air Force.
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 080 Issued at 2200Z on 21 Mar 2007
IA. Analysis of Solar Active Regions and Activity from 20/2100Z to 21/2100Z: Solar activity was very low. No flares were observed during the past 24 hours, and no new regions were numbered today.
IB. Solar Activity Forecast: Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 20/2100Z to 21/2100Z: The geomagnetic field was quiet. The greater than 2 MeV electron flux at geosynchronous orbit remained at high levels today.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled for the next three days (22-24 March). Isolated active periods are possible on 23-24 March, with a slight chance for minor storm conditions at high latitudes, due to a coronal hole high speed stream.
III. Event Probabilities 22 Mar-24 Mar
- Class M 01/01/01
- Class X 01/01/01
- Proton 01/01/01
- PCAF green
IV. Penticton 10.7 cm Flux
- Observed 21 Mar 073
- Predicted 22 Mar-24 Mar 075/075/075
- 90 Day Mean 21 Mar 078
V. Geomagnetic A Indices
- Observed Afr/Ap 20 Mar 001/002
- Estimated Afr/Ap 21 Mar 003/005
- Predicted Afr/Ap 22 Mar-24 Mar 005/005-008/008-008/008
VI. Geomagnetic Activity Probabilities 22 Mar-24 Mar
A. Middle Latitudes
- Active 15/20/20
- Minor storm 05/05/05
- Major-severe storm 01/01/01
B. High Latitudes
- Active 15/25/25
- Minor storm 05/10/10
- Major-severe storm 01/01/01