Joint USAF/NOAA Report of Solar and Geophysical Activity 28 Jun 2007
Product: Report of Solar-Geophysical Activity
Issued: 2007 Jun 28 2251 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 179 Issued at 2200Z on 28 Jun 2007
IA. Analysis of Solar Active Regions and Activity from 27/2100Z to 28/2100Z: Solar activity was very low. Region 961 (S11E36) remains relatively unchanged since yesterday. New Region 962 (S12E67) rotated onto the visible disk and is currently classified as a Bxo beta sunspot group.
IB. Solar Activity Forecast: Solar activity is expected to be very low to low. There is a slight chance for an isolated M-class flare from Region 962.
IIA. Geophysical Activity Summary 27/2100Z to 28/2100Z: The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled. Isolated active periods are possible on 29-30 June due to a recurrent coronal hole high speed stream.
III. Event Probabilities 29 Jun-01 Jul
- Class M 15/15/15
- Class X 01/01/01
- Proton 01/01/01
- PCAF Green
IV. Penticton 10.7 cm Flux
- Observed 28 Jun 075
- Predicted 29 Jun-01 Jul 080/080/080
- 90 Day Mean 28 Jun 074
V. Geomagnetic A Indices
- Observed Afr/Ap 27 Jun 005/005
- Estimated Afr/Ap 28 Jun 004/005
- Predicted Afr/Ap 29 Jun-01 Jul 008/008-008/010-006/008
VI. Geomagnetic Activity Probabilities 29 Jun-01 Jul
A. Middle Latitudes
- Active 15/25/15
- Minor storm 05/10/05
- Major-severe storm 01/01/01
B. High Latitudes
- Active 25/35/25
- Minor storm 15/20/15
- Major-severe storm 01/05/01