- Status Report
- Feb 7, 2023
Joint USAF/NOAA Report of Solar and Geophysical Activity 25 Sep 2007
Product: Report of Solar-Geophysical Activity
Issued: 2007 Sep 25 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 268 Issued at 2200Z on 25 Sep 2007
IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity was very low. The visible solar disk remains spotless.
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. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels today.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled 26 – 27 September. On 28 September conditions are forecast to be unsettled to active as another coronal hole high speed stream rotates into a geoeffective position.
III. Event Probabilities 26 Sep-28 Sep
- Class M 01/01/01
- Class X 01/01/01
- Proton 01/01/01
- PCAF green
IV. Penticton 10.7 cm Flux
- Observed 25 Sep 066
- Predicted 26 Sep-28 Sep 067/067/067
- 90 Day Mean 25 Sep 070
V. Geomagnetic A Indices
- Observed Afr/Ap 24 Sep 007/010
- Estimated Afr/Ap 25 Sep 006/007
- Predicted Afr/Ap 26 Sep-28 Sep 004/005-006/008-012/015
VI. Geomagnetic Activity Probabilities 26 Sep-28 Sep
A. Middle Latitudes
- Active 15/15/40
- Minor storm 05/05/15
- Major-severe storm 01/01/05
B. High Latitudes
- Active 20/20/45
- Minor storm 10/10/20
- Major-severe storm 01/01/10