Report of Solar Geophysical Activity
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 282 Issued at 2200Z on 09 Oct 2014 IA. Analysis of Solar Active Regions and Activity from 08/2100Z to 09/2100Z: Solar activity has been at moderate levels for the past 24 hours. The largest solar event of the period was a M1 event observed at 09/0158Z from Region 2182 (S14W58). There are currently 4 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be low on days one, two, and three (10 Oct, 11 Oct, 12 Oct). IIA. Geophysical Activity Summary 08/2100Z to 09/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 397 km/s at 09/0122Z. Total IMF reached 9 nT at 09/1333Z. The maximum southward component of Bz reached -7 nT at 09/0115Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 118 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (10 Oct, 11 Oct) and quiet levels on day three (12 Oct). III. Event probabilities 10 Oct-12 Oct Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 09 Oct 119 Predicted 10 Oct-12 Oct 120/120/115 90 Day Mean 09 Oct 130 V. Geomagnetic A Indices Observed Afr/Ap 08 Oct 006/007 Estimated Afr/Ap 09 Oct 013/015 Predicted Afr/Ap 10 Oct-12 Oct 007/008-007/008-006/005 VI. Geomagnetic Activity Probabilities 10 Oct-12 Oct A. Middle Latitudes Active 15/15/15 Minor Storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 25/25/20 Major-severe storm 25/25/20 Radio Events Observed 09 Oct 2014 A. 245 MHz Bursts Start End Peak Flux Time of Peak Duration 1024 1024 230 1024 0000 1410 1410 120 1410 0000 1431 1431 120 1431 0000 1753 1753 100 1753 0000 2021 2022 390 2021 0001 B. 245 MHz Noise Storms Start End Peak Flux Time of Peak 1302 1308 110 1308 NOAA Space Weather Scale descriptions can be found at www.sec.noaa.gov/NOAAscales
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