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OK0NAG > SOLAR 05.12.17 14:02l 130 Lines 4377 Bytes #999 (0) @ EU
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Subj: GEOALERT SIDC
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Subject: GEOALERT SIDC
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To: solar@eu
Date: Tue, 5 Dec 2017 12:41:52 GMT
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From: ok0nag <ok0nag>
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:Issued: 2017 Dec 05 1241 UTC
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#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium) #
#--------------------------------------------------------------------#
GEOALERT BRU339
UGEOA 30512 71205 1241/ 9930/
10052 22052 30052
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 05 Dec 2017 until 07 Dec
2017
PREDICTIONS FOR 05 Dec 2017 10CM FLUX: 066 / AP: 022
PREDICTIONS FOR 06 Dec 2017 10CM FLUX: 067 / AP: 033
PREDICTIONS FOR 07 Dec 2017 10CM FLUX: 068 / AP: 024
COMMENT: The solar activity remained very quiet. The visible solar disc
is
spotless and no flare has been recorded in the past 24-hour. Quiet flaring
conditions are expected.
No Earth directed Coronal Mass Ejection has been observed. The greater
than
10 MeV solar protons flux remained at nominal levels over the past 24 hours
and is expected to remain so.
The High Speed solar wind Stream (HSS) associated with the Coronal Hole
(which has crossed the central meridian on Dec 01) has arrived, and the
wind speed has shown a gradual increased from its nominal level to the
current level of about 550 km/s. Since the arrival of the Corotating
Interaction Region announcing the HSS on Dec 04 around 15:00 UT, the
interplanetary magnetic field magnitude has increased to fluctuate between
9-12 nT, and the Bz component has fluctuated between -12 and 10 nT. The
solar wind conditions are expected to persist until while under the
influence of the HSS associated with the coronal hole.
Disturbed geomagnetic conditions were observed due to the fast solar wind
and the Bz component of the interplanetary magnetic field reaching -12
nT.
A minor storm was observed by the local stations at Dourbes (K=5 from 19:00
to 20:00 UT on Dec 04), while NOAA reported Kp=5 at 12:00 UT on Dec 05.
The
high speed stream is expected to persist and further minor to moderate
geomagnetic storms cannot be excluded, especially if Bz component remains
negative for long period of time.
TODAY'S ESTIMATED ISN : 000, BASED ON 11 STATIONS.
99999
UGEOI 30512 71205 1241/ 04///
10000 20680 3013/ 4//// 80000 90000
99999
NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX END LOC XRAY OP 10CM Catania/NOAA RADIO_BURST_TYPES
NONE
END
UGEOR 30512 71205 1241/ ///// /////
99999
USSPS 31405 05080 00032
UMAGF 30503 71205 1004/ 04064 1/031 22123 34533
UMAGF 31523 71205 0000/ 04000 1/013 20021 32345
#--------------------------------------------------------------------#
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