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OK0NAG > SOLAR 28.08.17 19:55l 132 Lines 4650 Bytes #999 (0) @ EU
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Subject: GEOALERT SIDC
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Date: Mon, 28 Aug 2017 12:32:16 GMT
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#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium) #
#--------------------------------------------------------------------#
GEOALERT BRU240
UGEOA 30512 70828 1234/ 9930/
10282 22282 30282
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 28 Aug 2017 until 30 Aug
2017
PREDICTIONS FOR 28 Aug 2017 10CM FLUX: 078 / AP: 006
PREDICTIONS FOR 29 Aug 2017 10CM FLUX: 079 / AP: 006
PREDICTIONS FOR 30 Aug 2017 10CM FLUX: 080 / AP: 005
COMMENT: Over the past 24 hours, solar activity was at the low level. The
largest flare was a C6.3-class flare produced by Catania group 42 (NOAA
region 2671) with a peak-time at 15:16UT August, 27. The photospheric
magnetic field of Catania group 43 (NOAA region 2672) is slowly decaying
from Beta-Gamma to Beta (Fai to Cao McIntosh Class), and Catania group
42
(NOAA region 2671) will disappear behind the solar West limb in a couple
of
hours. Therefore, solar activity is expected to remain low over the next
24
hours with a small probability of 10% of C-class flares.
No Earth directed Coronal Mass Ejections (CMEs) have been detected in
available coronagraph imagery.
The solar protons remained at background level in the past 24 hours.
Over the past 24 hours, the solar wind speed was around 330 km/s and the
interplanetary magnetic field strength remained around 5 nT with the
component Bz fluctuating between -10 to 3 nT being mainly negative.
A large coronal hole extending from the North pole to about 20 latitude
South has now reached the central meridian.
The associated fast solar wind is expected to arrive at Earth in Aguste,
31 around noon UT time.
The geomagnetic conditions are presently quiet with Kp (NOAA) and local
K
(Dourbes) indexes ranging between 1-3. The geomagnetic environment is
expected to be at unsettled to active levels starting from Aguste, 31 due
to the fast solar wind coming from the coronal hole.
TODAY'S ESTIMATED ISN : 019, BASED ON 27 STATIONS.
99999
UGEOI 30512 70828 1234/ 27///
1//// 20780 3012/ 4//// 8//// 9////
99999
NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX END LOC XRAY OP 10CM Catania/NOAA RADIO_BURST_TYPES
NONE
END
UGEOR 30512 70828 1234/ 25/09 28102
10042 2//// 3//// 4622/ 50100 60009 46212 00000
10043 2//// 3//// 4522/ 50220 60015 11408 01000
99999
USSPS 31405 28091 02542 43012 42308 24515
USSPS 81202 26033 04432 59015 47218 21605 60018 10408 34519
USSPS 32404 26064 04032 64009 47311 21605 65017 10308 31515
USSPS 21305 26144 04142 66013 10108 34517 65008 46812 2/804
UMAGF 30503 70828 1004/ 27063 1/017 21222 33411
UMAGF 31523 70828 0000/ 27001 1/012 23112 32334
#--------------------------------------------------------------------#
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