NOAA/USAF Report of Solar-Geophysical Activity 15 November 2000
:Product: Report of Solar-Geophysical Activity :Issued: 2000 Nov 15 2200 UT # 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 320 Issued at 2200Z on 15 Nov 2000 IA. Analysis of Solar Active Regions and Activity from 14/2100Z to 15/2100Z: Solar activity decreased to low levels. Isolated C-class flares occurred, the largest of which was a C5/1b at 15/0246 UTC from Region 9223 (S14W61). The visible regions were mostly stable with no significant growth or decay noted. New Region 9234 (N20E22) was numbered. IB. Solar Activity Forecast: Solar activity is expected to be at low to moderate levels. There is a fair chance for isolated M-class activity during the period. IIA. Geophysical Activity Summary 14/2100Z to 15/2100Z: Geomagnetic field activity was at quiet levels. The greater than 2 MeV electron flux at geosynchronous orbit was high. IIB. Geophysical Activity Forecast: Geomagnetic field activity is expected to be at quiet to unsettled levels. The greater than 2 MeV electron flux at geosynchronous orbit is expected to decline to normal to moderate levels during the latter half of the forecast period. III. Event Probabilities 16 Nov-18 Nov Class M 40/40/40 Class X 05/05/05 Proton 05/05/05 PCAF green IV. Penticton 10.7 cm Flux Observed 15 Nov 147 Predicted 16 Nov-18 Nov 150/155/155 90 Day Mean 15 Nov 171 V. Geomagnetic A Indices Observed Afr/Ap 14 Nov 004/005 Estimated Afr/Ap 15 Nov 004/008 Predicted Afr/Ap 16 Nov-18 Nov 007/015-007/012-010/010 VI. Geomagnetic Activity Probabilities 16 Nov-18 Nov A. Middle Latitudes Active 15/15/30 Minor storm 05/05/10 Major-severe storm 01/01/01 B. High Latitudes Active 20/20/30 Minor storm 05/05/15 Major-severe storm 01/01/01