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W7EES > SWPC 13.09.18 21:20l 54 Lines 2026 Bytes #999 (0) @ WW
BID : 4908_W7EES
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Subj: Solar-Geophysical Activity
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Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 255 Issued at 2200Z on 12 Sep 2018
IA. Analysis of Solar Active Regions and Activity from 11/2100Z to
12/2100Z: Solar activity has been at very low levels for the past 24
hours. There are currently 1 numbered sunspot regions on the disk.
IB. Solar Activity Forecast: Solar activity is expected to be very low
on days one, two, and three (13 Sep, 14 Sep, 15 Sep).
IIA. Geophysical Activity Summary 11/2100Z to 12/2100Z: The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 624 km/s at 12/0438Z. Total IMF reached 6 nT at
11/2337Z. The maximum southward component of Bz reached -4 nT at
12/0328Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 1911 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to active levels on day one (13 Sep), quiet to unsettled
levels on day two (14 Sep) and quiet levels on day three (15 Sep).
III. Event probabilities 13 Sep-15 Sep
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 12 Sep 070
Predicted 13 Sep-15 Sep 068/068/070
90 Day Mean 12 Sep 070
V. Geomagnetic A Indices
Observed Afr/Ap 11 Sep 024/030
Estimated Afr/Ap 12 Sep 005/006
Predicted Afr/Ap 13 Sep-15 Sep 010/012-009/008-006/005
VI. Geomagnetic Activity Probabilities 13 Sep-15 Sep
A. Middle Latitudes
Active 25/20/10
Minor Storm 10/05/01
Major-severe storm 01/01/01
B. High Latitudes
Active 15/15/15
Minor Storm 25/25/20
Major-severe storm 35/25/20
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