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OK0NAG > SOLAR 24.12.17 13:50l 129 Lines 4459 Bytes #999 (0) @ EU
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Subj: GEOALERT SIDC
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Date: Sun, 24 Dec 2017 12:30:14 GMT
From: ok0nag <ok0nag>
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Subject: GEOALERT SIDC
:Issued: 2017 Dec 24 1230 UTC
:Product: documentation at http://www.sidc.be/products/xut
#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium) #
#--------------------------------------------------------------------#
GEOALERT BRU358
UGEOA 30512 71224 1230/ 9930/
10242 21242 30242
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 24 Dec 2017 until 26 Dec
2017
PREDICTIONS FOR 24 Dec 2017 10CM FLUX: 076 / AP: 023
PREDICTIONS FOR 25 Dec 2017 10CM FLUX: 076 / AP: 031
PREDICTIONS FOR 26 Dec 2017 10CM FLUX: 075 / AP: 013
COMMENT: Solar activity was very low with X-ray flux remaining below B
level, apart from a single B1 flare from the only region on disk (Catania
group 67, NOAA active region 2692).
There is a relatively small chance for C -flaring over the next days.
Around 18:00 UT a filament eruption was visible in the North Eastern
quadrant. Coronagraph images do not reveal any associated CME signatures.
No Earth directed CMEs were recorded in coronagraph images.
Proton flux levels are at background values and expected to remain so.
Solar wind showed the expected arrival of the high speed stream from the
equatorial negative polarity coronal hole.
Solar wind speed first increased to 400 km/s but then declined again in
the
afternoon of December 23. Since midnight it is increasing again to close
to
500 km/s currently. Total magnetic field in the compression region measured
mostly in the 9-12nT range with a peak of over 14.5nT around 7:20UT. The
magnetic field Bz component was variable with excursions down to -9nT.
Solar wind speed is expected to further increase and remain elevated over
the next few days under influence of the coronal hole high speed stream.
Geomagnetic conditions were quiet to unsettled (local K Dourbes 0-2 and
NOAA Kp 0-3). Geomagnetic conditions are expected to be unsettled to active
with minor geomagnetic storms possible under the influence of the high
speed stream.
TODAY'S ESTIMATED ISN : 026, BASED ON 07 STATIONS.
99999
UGEOI 30512 71224 1230/ 23///
1//// 20760 3005/ 4//// 8//// 9////
99999
NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX END LOC XRAY OP 10CM Catania/NOAA RADIO_BURST_TYPES
NONE
END
UGEOR 30512 71224 1230/ 22/10 24101
10067 2//// 3//// 4422/ 50140 60017 12418 02000
99999
USSPS 81202 23002 02222 84009 11718 34412
USSPS 32404 22082 02032 87009 12618 37410
USSPS 21305 22202 02222 89014 11917 34412
UMAGF 30503 71224 1004/ 23067 1/008 21110 31122
UMAGF 31523 71224 0000/ 23006 1/005 22222 31011
#--------------------------------------------------------------------#
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