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: 2018 Dec 15 1230 UTC
:Product: documentation at http://www.sidc.be/products/xut
#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium)                       #
#--------------------------------------------------------------------#
GEOALERT BRU349
UGEOA 30512 81215 1230/ 9930/ 
10152 21152 30152 
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 15 Dec 2018 until 17 Dec
2018
PREDICTIONS FOR 15 Dec 2018  10CM FLUX: 072 / AP: 003
PREDICTIONS FOR 16 Dec 2018  10CM FLUX: 072 / AP: 013
PREDICTIONS FOR 17 Dec 2018  10CM FLUX: 072 / AP: 013
COMMENT: A new beta region, NOAA 2731, emerged in the past 24 hours. The
Sun did not produce any B flares or brighter in the past 24 hours. The
chance for a C flare in the next 24 hours is estimated at 5%.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available
coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24
hours, and is expected to stay at nominal levels in the next 24 hours.

Solar wind speed near Earth as registered by DSCOVR varied between about
300 and 390 km/s in the past 24 hours. The Interplanetary Magnetic Field
(IMF) was predominantly directed towards the Sun and its magnitude varied
between about 2 and 6 nT. Bz was never below -5 nT. A weak solar wind
stream associated with a negative polarity, equatorial-South polar coronal
hole is expected to arrive near Earth on December 16.

Quiet geomagnetic conditions (K Dourbes between 0 and 1; NOAA Kp between 0
and 1) were registered in the past 24 hours. Quiet to unsettled geomagnetic
levels (K Dourbes < 4) are expected on December 15. There is a chance for
active intervals (K Dourbes = 4) on December 16 and 17, related to the
expected arrival of a weak solar wind stream associated with a negative
polarity, equatorial-South polar coronal hole.
TODAY'S ESTIMATED ISN  : 007, BASED ON 14 STATIONS.
99999
UGEOI 30512 81215 1230/ 14/// 
10011 20710 3001/ 4//// 80101 90010 
99999

NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX  END  LOC    XRAY OP  10CM Catania/NOAA RADIO_BURST_TYPES 
NONE
END

UGEOR 30512 81215 1230/ 14/07 15101 
10004 2//// 3//// 410// 50010 60001 15813 00000 
99999
UMAGF 30503 81215 1004/ 14064 1/003 20000 30100
UMAGF 31523 81215 0000/ 14004 1/001 20100 30101
#--------------------------------------------------------------------#
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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.