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OK0NAG > SOLAR 25.01.18 14:52l 129 Lines 4251 Bytes #999 (0) @ EU
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Subj: GEOALERT SIDC
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Date: Thu, 25 Jan 2018 12:30:17 GMT
To: solar@eu
Subject: GEOALERT SIDC
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:Issued: 2018 Jan 25 1230 UTC
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#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium) #
#--------------------------------------------------------------------#
GEOALERT BRU025
UGEOA 30512 80125 1230/ 9930/
10252 20252 30252
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 25 Jan 2018 until 27 Jan
2018
PREDICTIONS FOR 25 Jan 2018 10CM FLUX: 070 / AP: 009
PREDICTIONS FOR 26 Jan 2018 10CM FLUX: 069 / AP: 007
PREDICTIONS FOR 27 Jan 2018 10CM FLUX: 069 / AP: 010
COMMENT: Solar activity was at very low levels. The Sun is spotless. No
earth-directed coronal mass ejections (CMEs) were observed in available
coronagraphic imagery. The greater than 10 MeV proton flux was at nominal
levels.
Solar activity is expected to remain at very low levels.
Earth crossed a fold in the Heliospheric Current Sheet (HCS) on 24 January.
The interplanetary magnetic field (IMF) was mostly directed away from the
Sun from 02UT until about 20UT, after which it switched to a mostly towards
orientation. Solar wind speed gradually increased from an initial 350 km/s
to 400 km/s around 20UT, after which it remained steady in the range of
400-420 km/s. Bz oscillated between -9 and +8 nT, with a longer stretch
of
mostly negative values between 20-01UT (DSCOVR). A small negative
equatorial coronal hole (CH) and the extension of a positive polar CH are
transiting the central meridian.
The geomagnetic field was at quiet to unsettled conditions, with an active
episode recorded during the 21-24UT interval. Mostly quiet to unsettled
conditions with a chance on an active episode are expected for the coming
days, in view of possible further crossings of the HCS and the potential
arrival of the wind streams associated with the aforementioned CHs around
27 and 28 January.
TODAY'S ESTIMATED ISN : 000, BASED ON 05 STATIONS.
99999
UGEOI 30512 80125 1230/ 24///
10000 2070/ 3011/ 4//// 80000 90000
99999
NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX END LOC XRAY OP 10CM Catania/NOAA RADIO_BURST_TYPES
NONE
END
UGEOR 30512 80125 1230/ ///// /////
99999
USSPS 31405 25095 00022
USSPS 21305 23183 01142 95001 40612 0/101
UMAGF 30503 80125 1004/ 24066 1/019 21123 31432
UMAGF 31523 80125 0000/ 24005 1/011 20010 33325
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