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: 2017 Jun 23 1230 UTC
:Product: documentation at http://www.sidc.be/products/xut
#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium)                       #
#--------------------------------------------------------------------#
GEOALERT BRU174
UGEOA 30512 70623 1230/ 9930/ 
10232 20232 30232 
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 23 Jun 2017 until 25 Jun
2017
PREDICTIONS FOR 23 Jun 2017  10CM FLUX: 074 / AP: 002
PREDICTIONS FOR 24 Jun 2017  10CM FLUX: 074 / AP: 010
PREDICTIONS FOR 25 Jun 2017  10CM FLUX: 075 / AP: 012
COMMENT: Over the past 24 hours solar activity has been low. No significant
flares have been recorded. No Earth directed Coronal Mass Ejections (CMEs)
have been detected. AR 2664  (Mcintosh class:Hsx; Mag. type:Alpha) has
produced little activity. There’s a small centrally located filament
channel which looks stable, and a small northern coronal hole extending to
lower latitudes that has moved into the Western hemisphere and may increase
solar wind speeds in a couple of days. Solar activity is expected to remain
low over the next 24 hours with a low probability of C-class flares and a
very low probability of M-class flares.

The solar wind speed has fluctuated around 320 km/s over the past 24 hours.
The total magnetic field strength has fluctuated between 3 and 8 nT. The Bz
component fluctuated around 0 nT, but has been mainly positive. Geomagnetic
conditions ranged between Kp index 1-3 (NOAA) and local K index 0-3
(Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be
quiet.
TODAY'S ESTIMATED ISN  : 023, BASED ON 21 STATIONS.
99999
UGEOI 30512 70623 1230/ 22/// 
10027 20740 3006/ 4//// 80102 90080 
99999

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

UGEOR 30512 70623 1230/ ///// ///// 
99999
USSPS 31405 23073 02332 32001 45313 2/901 34004 14417 2/902
USSPS 21305 21132 03632 53011 16718 21303 51005 43312 1/802 52002 47813
0/101
USSPS 81202 22009 02232 49006 43713 3/801 51007 16017 1/801
USSPS 32404 22051 02332 54002 44113 2/802 56006 15918 2/801
UMAGF 31523 70623 0000/ 22009 1/006 23111 31132
#--------------------------------------------------------------------#
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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.