| Report of Solar-Geophysical Activity Issued: 2008 Oct 30 2200 UTC Prepared jointly by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and the U.S. Air Force. Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 304 Issued at 2200Z on 30 Oct 2008 IA. Analysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: Solar activity was very low. No flares were observed. New-cycle polarity Region 1007 (N35E15) was numbered today. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z: Geomagnetic field activity was at quiet to active levels. ACE solar wind measurements indicated Earth remained within a recurrent coronal hole high-speed stream. Solar wind velocities ranged from 632 to 723 km/sec during the period. IMF Bz varied from 06 to -05 nT during the period. The greater than 2 MeV electron flux at geosynchronous orbit increased to high levels at 30/1605Z. IIB. Geophysical Activity Forecast: Geomagnetic field activity is expected to be at quiet to unsettled levels on day 1 (31 October) with a chance for active levels at high latitudes. Mostly quiet levels are expected during days 2 - 3 (01 - 02 November). III. Event Probabilities 31 Oct-02 Nov Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 30 Oct 067 Predicted 31 Oct-02 Nov 068/069/069 90 Day Mean 30 Oct 067 V. Geomagnetic A Indices Observed Afr/Ap 29 Oct 016/011 Estimated Afr/Ap 30 Oct 013/010 Predicted Afr/Ap 31 Oct-02 Nov 008/008-005/005-005/005 VI. Geomagnetic Activity Probabilities 31 Oct-02 Nov A. Middle Latitudes Active 20/15/05 Minor storm 10/05/01 Major-severe storm 01/01/01 B. High Latitudes Active 25/20/10 Minor storm 15/05/01 Major-severe storm 01/01/01
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