Joint USAF/NOAA Report of Solar and Geophysical Activity 25 Nov 2007
Product: Report of Solar-Geophysical Activity
Issued: 2007 Nov 24 2200 UTC
Prepared jointly by the U.S. Dept. of Commerce, NOAA,
Space Weather Prediction Center and the U.S. Air Force.
Product: Report of Solar-Geophysical Activity
Issued: 2007 Nov 25 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 329 Issued at 2200Z on 25 Nov 2007
IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity was very low.
IB. Solar Activity Forecast: Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z: The geomagnetic field was quiet to unsettled. Solar wind observations from the Ace spacecraft show continued presence of the recurrent coronal hole high speed stream. Solar wind velocity averaged between 580-620 km/s with Bz fluctuations +/- 4 nT. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled on 26 November with quiet levels returning on 27-28 November.
III. Event Probabilities 26 Nov-28 Nov
- Class M 01/01/01
- Class X 01/01/01
- Proton 01/01/01
- PCAF green
IV. Penticton 10.7 cm Flux
- Observed 25 Nov 071
- Predicted 26 Nov-28 Nov 070/070/070
- 90 Day Mean 25 Nov 068
V. Geomagnetic A Indices
- Observed Afr/Ap 24 Nov 008/012
- Estimated Afr/Ap 25 Nov 008/015
- Predicted Afr/Ap 26 Nov-28 Nov 008/010-005/005-005/005
VI. Geomagnetic Activity Probabilities 26 Nov-28 Nov
A. Middle Latitudes
- Active 15/10/10
- Minor storm 05/01/01
- Major-severe storm 01/01/01
B. High Latitudes A
- ctive 20/10/10
- Minor storm 10/01/01
- Major-severe storm 05/01/01
