| Report of Solar-Geophysical Activity Issued: 2007 Apr 05 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 095 Issued at 2200Z on 05 Apr 2007 IA. Analysis of Solar Active Regions and Activity from 04/2100Z to 05/2100Z: Solar activity remained at very low levels. The visible solar disk was void of sunspots. No new regions were numbered today. IB. Solar Activity Forecast: Solar activity is expected to remain at very low levels. IIA. Geophysical Activity Summary 04/2100Z to 05/2100Z: The geomagnetic field was at quiet levels. The greater than 2 MeV electron flux at geosynchronous orbit was at high levels today. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on 06 and 07 April. The onset of a recurrent coronal hole should begin late on 08 April allowing for possible unsettled conditions to isolated active periods. III. Event Probabilities 06 Apr-08 Apr Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 05 Apr 071 Predicted 06 Apr-08 Apr 070/070/070 90 Day Mean 05 Apr 077 V. Geomagnetic A Indices Observed Afr/Ap 04 Apr 006/008 Estimated Afr/Ap 05 Apr 002/005 Predicted Afr/Ap 06 Apr-08 Apr 002/005-002/005-008/010 VI. Geomagnetic Activity Probabilities 06 Apr-08 Apr A. Middle Latitudes Active 10/10/20 Minor storm 01/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/20 Minor storm 01/01/10 Major-severe storm 01/01/05 ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2007 Apr 06 0500 UTC Station: GOES12 Observed Yesterday: Yes Yesterday Maximum 2MeV Flux: 20100 pfu For current space weather conditions please refer to: http://www.sec.noaa.gov/alerts/NOAA Space Weather Scale descriptions can be found at www.sec.noaa.gov/NOAAscales |