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OK0NAG > SOLAR 31.08.17 14:29l 141 Lines 4849 Bytes #999 (0) @ EU
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Subj: GEOALERT SIDC
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Date: Thu, 31 Aug 2017 12:27:28 GMT
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To: solar@eu
Subject: GEOALERT SIDC
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From: ok0nag <ok0nag>
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:Issued: 2017 Aug 31 1230 UTC
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#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium) #
#--------------------------------------------------------------------#
GEOALERT BRU243
UGEOA 30512 70831 1230/ 9930/
11312 22312 30312
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 31 Aug 2017 until 02 Sep
2017
PREDICTIONS FOR 31 Aug 2017 10CM FLUX: 088 / AP: 039
PREDICTIONS FOR 01 Sep 2017 10CM FLUX: 087 / AP: 035
PREDICTIONS FOR 02 Sep 2017 10CM FLUX: 087 / AP: 031
COMMENT: Over the past 24 hours solar activity remained low. There are
currently tree active regions on the visible discs. Catania group 47 (NOAA
region 2674) produced several C-class flare, the major one was a C5.2-class
flare peaking at 18:50. Catania group 43 (NOAA region 2672) produced only
B-class flare and narrow CMEs. We expect the solar activity to remain low
with a probability of few sporadic C-class flare.
No Earth directed Coronal Mass Ejections (CMEs) have been detected in the
available coronagraph imagery and the solar protons remains at background
level.
The high speed stream has arrived and the Earth is presently inside the
fast solar wind with the speed that increased up to 700 km/s according
to
ACE data. The interplanetary magnetic field magnitude reached 30 nT around
06:00UT on August 31 and has now decreased and remains below 10 nT. The
Bz
component has fluctuating between -20 and 20 nT and remains now around
-5
nT.
The active geomagnetic conditions observed on August, 29 (Kp and K-Dourbes
= 4) turned out to be caused by a sector boundary crossing, which was
announcing the soon arrival of the high speed stream. After returning to
quiet levels, the geomagnetic conditions have become active again around
08:00 UT (Kp=5 and K-Dourbes=4) due to the arrival of the high speed
stream. K-Dourbes has then reached 6 at 10:00 UT. The geomagnetic
conditions will remain disturbed for the next 48 h with active to minor
storm conditions expected.
TODAY'S ESTIMATED ISN : 068, BASED ON 23 STATIONS.
99999
UGEOI 30512 70831 1230/ 30///
10049 20870 3003/ 4//// 80003 90320
99999
NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX END LOC XRAY OP 10CM Catania/NOAA RADIO_BURST_TYPES
NONE
END
UGEOR 30512 70831 1230/ 30/07 31103
10043 2//// 3//// 4321/ 50040 60004 45108 01000
10046 2//// 3//// 472// 50040 60001 25907 00000
10047 2//// 3//// 4542/ 50240 60014 17613 16000
99999
USSPS 31405 31098 07142 43004 46608 25406 46005 24308 2/901 47045 15914
44519 48002 31405 21305
USSPS 32404 29068 03332 65005 44206 2/801 67004 27308 2/801 68010 18211
4/801
USSPS 21305 29148 03542 69008 17512 5/801 68004 26508 2/801 66006 44006
21303
USSPS 81202 30003 03732 60008 45204 2/801 62009 26208 51501 63042 17815
2/805
UMAGF 30503 70831 1004/ 30063 1/007 21000 31013
UMAGF 31523 70831 0000/ 30001 1/003 22211 30110
#--------------------------------------------------------------------#
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