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 Oct 23 1230 UTC
:Product: documentation at http://www.sidc.be/products/xut
#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium)                       #
#--------------------------------------------------------------------#
GEOALERT BRU296
UGEOA 30512 81023 1230/ 9930/ 
10232 20232 30232 
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 23 Oct 2018 until 25 Oct
2018
PREDICTIONS FOR 23 Oct 2018  10CM FLUX: 071 / AP: 006
PREDICTIONS FOR 24 Oct 2018  10CM FLUX: 070 / AP: 006
PREDICTIONS FOR 25 Oct 2018  10CM FLUX: 068 / AP: 003
COMMENT: Over the past 24 hours solar activity has been low. No significant
flares have been recorded. There are currently no significant Active
Regions on the solar disk. A region of low latitude negative polarity
patchy coronal hole passed solar disk central meridian two days ago. No
Earth directed Coronal Mass Ejections (CMEs) have been detected. The
greater than 10MeV proton flux remained at background levels over the past
24 hours. Solar activity is expected to remain low over the next 24 hours
with a low probability of C-class flares and a low probability of M-class
flares.
The solar wind speed has decreased from 375 and 325 km/s over the past 24
hours. The total magnetic field strength has fluctuated around 5 nT. The Bz
component fluctuated around 0 nT, ranging between -5 and +5 nT. The region
of low latitude negative polarity patchy coronal hole that passed solar
disk central meridian two days ago and may enhance solar wind speeds at
Earth over the next couple of days. Geomagnetic conditions ranged between
Kp index 1-2 (NOAA) and local K index 1-2 (Dourbes) over the past 24 hours.
Geomagnetic conditions are expected to be quiet to unsettled.
TODAY'S ESTIMATED ISN  : 000, BASED ON 17 STATIONS.
99999
UGEOI 30512 81023 1230/ 22/// 
10011 20710 3007/ 4//// 80101 90010 
99999

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

UGEOR 30512 81023 1230/ ///// ///// 
99999
USSPS 31405 23080 00032
UMAGF 30503 81023 1004/ 22065 1/007 21011 31121
UMAGF 31523 81023 0000/ 22000 1/007 24120 31122
#--------------------------------------------------------------------#
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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.