GEOALERT SIDC

3-day-forecast of solar and geomagnetic activity.
Source SIDC (RWC-Belgium)
Frequency Daily
Format Encoded data (ISES)
Mail header GEOALERT SIDC
SIDC code xut

Latest issue 

:Issued: 2024 Jul 21 1230 UTC
:Product: documentation at http://www.sidc.be/products/xut
#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium)                       #
#--------------------------------------------------------------------#
GEOALERT BRU203
UGEOA 30512 40721 1230/ 9930/ 
12212 20212 30212 
99999
PLAIN
PREDICTIONS FOR 21 Jul 2024  10CM FLUX: 204 / AP: 006
PREDICTIONS FOR 22 Jul 2024  10CM FLUX: 206 / AP: 003
PREDICTIONS FOR 23 Jul 2024  10CM FLUX: 202 / AP: 004

Solar Active Regions and flaring: Solar flaring activity was moderate with
three M1 flares detected during the past 24 hours. NOAA Active Region (AR)
3744 (magnetic configuration Beta, Catania sunspot group no 96) produced
the first two flares, an M1.5 at 20 Jul 18:49 UTC and an M1.4 at 21 Jul
03:55 UTC. NOAA AR 3751 (magnetic configuration Beta-Gamma-Delta, Catania
sunspot group no 12) produced the third, an M1.5 at 21 Jul 08:34 UTC.
Further M-class flaring activity is likely, mostly from the AR mentioned
above, and there is a small chance of an X-class flare in the next 24
hours.

Coronal mass ejections: No Earth-directed Coronal Mass Ejections (CME) were
observed in the last 24 hours.

Solar wind: Solar Wind (SW) conditions remained typical of the slow SW
regime during the past 24 hours. The SW speed varied between 310 and 380
km/s, while the total interplanetary magnetic field (Bt) ranged between 2
and 10 nT during the past 24 hours. The North-South magnetic component (Bz)
fluctuated between -4 and 6 nT, while the interplanetary magnetic field phi
angle was directed predominately towards the Sun in the past 24 hours. The
SW conditions are expected to follow the same pattern for the next 24
hours.

Geomagnetism: During the last 24 hours geomagnetic conditions were globally
quiet (NOAA Kp 1 to 2+), while locally they had a brief period of unsettled
conditions (K BEL 3 at 20 Jul 15:00-21:00 UTC). They are expected to remain
quiet both globally and locally in the next 24 hours.

Proton flux levels: The greater than 10 MeV proton flux was at nominal
levels over the past 24 hours and is likely to remain so. Nevertheless,
there is a small chance of a proton event associated with the activity of
NOAA active region 3751.

Electron fluxes at GEO: The greater than 2 MeV electron flux, as measured
by the GOES-16 satellite, was at nominal levels during the last 24 hours
and is expected to remain at these levels during the next 24 hours. The 24h
electron fluence was at very low levels during the past 24 hours and is
expected to remain at these levels for the following 24 hours.


TODAY'S ESTIMATED ISN  : 225, BASED ON 12 STATIONS.
99999
UGEOI 30512 40721 1230/ 20/// 
1//// 22070 3009/ 4//// 8//// 9//// 
99999

NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX  END  LOC    XRAY OP  10CM Catania/NOAA RADIO_BURST_TYPES 
20  1836  1849 1902 N12W68 M1.5 1N       96/3744      VI/1 
21  0346  0355 0359 ////// M1.4          96/3744      VI/2 
21  0828  0834 0841 ////// M1.5          12/3751      
END

UGEOR 30512 40721 1230/ ///// ///// 
99999
USSPS 81202 19017 26822 30008 46312 21304 20002 44216 11304 24001 42715
0/103 38001 40418 0/101 29001 11422 1/801 31001 13024 1/803 36001 14617
1/802 33005 13302 31408 34009 23826 21302 39001 22611 0/102 28030 21408
37532 37011 31007 31412 27001 30820 0/101 21006 34625 3/802 19005 34823
31406 32002 35507 0/102 18002 35911 1/802 17002 36716 0/101
USSPS 31405 19070 33332 04004 35220 25406 05006 34925 2/802 06002 42915
01207 08003 46812 22304 10003 30520 11309 11002 11223 11302 12045 21107
34447 14002 12825 11305 15001 37016 1/801 17001 20233 01202 18005 13103
21309 19007 23717 22303 20003 14518 21303 22024 31307 24416 23001 40720
01202 24001 47820 01202 25003 22309 22309 93004 35708 21307 96003 44616
12307
USSPS 32404 19072 26132 45000 35708 01204 46002 35121 01206 47000 44516
01204 48003 34725 2/802 57000 30919 0/101 59015 21108 37528 60000 11223
0/101 61003 46513 21303 62001 12826 2/803 63000 42916 0/101 65000 35006
01202 66002 13403 21306 67005 23817 2/802 68001 14518 1/801 69000 36916
0/101 70008 31306 31408 71000 40621 01203 72001 22409 01205
USSPS 21305 19178 32932 83010 44915 31309 87012 35816 1/809 84010 35724
3/804 88002 43514 0/104 90002 31018 11302 92049 10209 54565 94002 40322
3/801 96006 46714 01203 99012 12201 01220 00016 23018 2/809 01009 13816
31306 03007 36006 0/106 02029 31907 51423 05003 41518 1/802 06015 21711
31416
UMAGF 30503 40721 1004/ 20069 1/014 22223 33111
UMAGF 31523 40721 0000/ 20007 1/009 22222 32332
#--------------------------------------------------------------------#
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Details

The Geoalert message starts with the code GEOALERT BRUXXX, where xxx is the day-of-the-year number.
Besides the ISES codes like UGEOA, UGEOI, UGEOR and USSPS, this message contains the following information:
PLAIN
PREDICTIONS FOR "today" : 10CM FLUX: xxx / AP: xxx
PREDICTIONS FOR "today+1": 10CM FLUX: xxx / AP: xxx
PREDICTIONS FOR "today+2": 10CM FLUX: xxx / AP: xxx
99999
This gives the predicted 10.7 cm radioflux and the predicted Ap index for 3 days starting on the date of the message
NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX END LOC XRAY OP 10CM TYPE Catania NOAA NOTE

This is the header of a table that lists all major events.
DAY gives the day-of-the-month.
BEGIN, MAX and END give the UT time of the different phases of the X-ray output of the event.
LOC gives the location of the event in heliographic coordinates.
XRAY gives the GOES X-ray class of the event.
OP lists the optical flare class.
10cm gives the 10.7 cm radioflux output of the event.
TYPE specifies the type of radiobursts observed.
Catania gives the Catania sunspot group number where the event happened.
NOAA is the corresponding NOAA active region number.
NOTE is the header of any other type of information, e.g. if a CME was observed associated with the event.


Check the ISES code book for information on ISES codes.