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OK0NAG > SOLAR 26.09.17 14:23l 134 Lines 4789 Bytes #999 (0) @ EU
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Subj: GEOALERT SIDC
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Date: Tue, 26 Sep 2017 13:21:39 GMT
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Subject: GEOALERT SIDC
From: ok0nag <ok0nag>
To: solar@eu
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#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium) #
#--------------------------------------------------------------------#
GEOALERT BRU269
UGEOA 30512 70926 1321/ 9930/
10262 21262 30262
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 26 Sep 2017 until 28 Sep
2017
PREDICTIONS FOR 26 Sep 2017 10CM FLUX: 092 / AP: 004
PREDICTIONS FOR 27 Sep 2017 10CM FLUX: 094 / AP: 016
PREDICTIONS FOR 28 Sep 2017 10CM FLUX: 096 / AP: 010
COMMENT: Solar activity slightly increased over the past 24 hours. Two
numbered active regions (AR) regions on the visible disk AR 2681 (Cso;
Beta), AR 2682 (Hax; Alpha), produced multiple B-class flares. The newly-
numbered AR 2683 (Hkx; Apha) produced the largest C1.8 flare which peaked
at 02:34 UT today (26-Sep-2017). One eruptive dimming has been observed
at
the solar disk center at 15:23 UT yesterday, an associated CME departed
mostly toward the East with the projected speed around 490 km/s. More
coronograph imagery is needed before conclusion can be made. One filament
erupted from the east solar limb at 22:20 UT yesterday; the associated
slow
CME is not expected to be geoeffective. Solar activity is expected to
remain low over the next 24 hours with a probability of C-class flares.
Solar wind parameters returned to nominal levels during the past 24 hours.
Solar wind speed decreased from around 400 km/s to 315 km/s. Total field
strength remained below 3.5 nT, while Bz component varied between 2.5 and
-2.5 nT. Solar wind parameters are expected remain at near background
levels today (26-Sep-2017). Solar wind variations can increase tomorrow
(27 September, 2017) due to the influence of the transequatorial positive
polarity CH HSS. Geomagnetic conditions ranged between Kp index 0-2 (NOAA)
and local K index 0-2 (Dourbes) over the past 24 hours. The geomagnetic
field is expected to be at quiet levels today and may reach a minor storm
level tomorrow (27-Sep-2017).
TODAY'S ESTIMATED ISN : 040, BASED ON 18 STATIONS.
99999
UGEOI 30512 70926 1321/ 25///
10039 20900 3005/ 4//// 80103 90280
99999
NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX END LOC XRAY OP 10CM Catania/NOAA RADIO_BURST_TYPES
NONE
END
UGEOR 30512 70926 1321/ 26/07 26103
10055 2//// 3//// 4321/ 50100 60010 20112 02000
10056 2//// 3//// 472// 50130 60003 25410 01000
10057 2//// 3//// 474// 50130 60003 17013 01000
99999
USSPS 31405 26075 04642 55010 20112 22310 56013 25410 2/903 57013 17013
4/803
USSPS 32404 24083 02422 77009 22813 2/802 78012 27909 2/802
USSPS 21305 24206 02632 76012 22213 3/805 77024 27508 2/801
USSPS 81202 25045 02312 72012 21612 2/802 73017 27011 4/801
UMAGF 30503 70926 1004/ 25063 1/006 21101 31111
UMAGF 31523 70926 0000/ 25005 1/005 23211 30111
#--------------------------------------------------------------------#
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