NOAA/USAF Report of Solar-Geophysical Activity 2 November 2000
:Product: Report of Solar-Geophysical Activity :Issued: 2000 Nov 02 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 307 Issued at 2200Z on 02 Nov 2000 IA. Analysis of Solar Active Regions and Activity from 01/2100Z to 02/2100Z: Solar activity was low. Region 9218 (N19E26) produced several minor C-class events. Region 9218 (N19E26) grew significantly in area since yesterday but maintained a simple beta magnetic configuration. An EPL occurred on the northwest limb at approximately 02/1744Z. Further analysis is required as data becomes available. SOHO/LASCO imagery indicated an earth-directed full halo CME from a filament eruption east of Region 9214 yesterday at approximately S17E39. The CME was first visible above the SE limb at 01/1626Z. The imagery suggests most of the material and energy associated with the CME is directed to the southeast. However, evidence of a weak full halo is clear. No new regions were numbered today. IB. Solar Activity Forecast: Solar activity is expected to be low to moderate. IIA. Geophysical Activity Summary 01/2100Z to 02/2100Z: The geomagnetic field was quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled the first day. Due to the expected arrival of the earth-directed full halo CME mentioned above, active conditions are expected on the second day of the period. Minor storm levels are possible in the higher latitudes. The geomagnetic field is expected to decrease to predominantly unsettled conditions toward the end of the period. III. Event Probabilities 03 Nov-05 Nov Class M 50/50/50 Class X 10/10/10 Proton 05/05/05 PCAF green IV. Penticton 10.7 cm Flux Observed 02 Nov 196 Predicted 03 Nov-05 Nov 200/200/195 90 Day Mean 02 Nov 172 V. Geomagnetic A Indices Observed Afr/Ap 01 Nov 004/006 Estimated Afr/Ap 02 Nov 005/008 Predicted Afr/Ap 03 Nov-05 Nov 008/010-020/020-015/015 VI. Geomagnetic Activity Probabilities 03 Nov-05 Nov A. Middle Latitudes Active 15/30/30 Minor storm 05/15/15 Major-severe storm 01/05/05 B. High Latitudes Active 20/35/35 Minor storm 05/20/20 Major-severe storm 01/05/05