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W7EES > SWPC 01.12.20 10:07l 53 Lines 2242 Bytes #999 (0) @ WW
BID : 24977_W7EES
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Subj: Solar-Geophysical Activity
Path: IW8PGT<IZ3LSV<DB0ERF<OK0NAG<OK0PBR<OK2PEN<N3HYM<W9GM<W8EDU<N9LYA<
W7EES
Sent: 201201/0120Z 24977@W7EES.OR.USA.NOAM BPQ6.0.20
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 335 Issued at 2200Z on 30 Nov 2020
IA. Analysis of Solar Active Regions and Activity from 29/2100Z to
30/2100Z: Solar activity has been at very low levels for the past 24
hours. There are currently 5 numbered sunspot regions on the disk.
IB. Solar Activity Forecast: Solar activity is likely to be low with a
chance for M-class flares on days one, two, and three (01 Dec, 02 Dec,
03 Dec).
IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z: The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 577 km/s at 30/2045Z. Total IMF reached 12
nT at 30/0718Z. The maximum southward component of Bz reached -9 nT at
30/0718Z. Protons greater than 10 MeV at geosynchronous orbit reached a
peak level of 4 pfu at 30/1950Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 786 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to active levels on days one and two (01 Dec, 02 Dec) and
quiet levels on day three (03 Dec). Protons have a slight chance of
crossing threshold on days one, two, and three (01 Dec, 02 Dec, 03 Dec).
III. Event probabilities 01 Dec-03 Dec
Class M 25/25/25
Class X 05/05/05
Proton 10/10/10
PCAF green
IV. Penticton 10.7 cm Flux
Observed 30 Nov 109
Predicted 01 Dec-03 Dec 110/110/105
90 Day Mean 30 Nov 079
V. Geomagnetic A Indices
Observed Afr/Ap 29 Nov 006/004
Estimated Afr/Ap 30 Nov 008/010
Predicted Afr/Ap 01 Dec-03 Dec 008/012-011/012-005/005
VI. Geomagnetic Activity Probabilities 01 Dec-03 Dec
A. Middle Latitudes
Active 35/35/10
Minor Storm 15/15/01
Major-severe storm 01/01/01
B. High Latitudes
Active 15/15/20
Minor Storm 30/30/20
Major-severe storm 50/50/10
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