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 Jan 18 1230 UTC
:Product: documentation at http://www.sidc.be/products/xut
#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium)                       #
#--------------------------------------------------------------------#
GEOALERT BRU018
UGEOA 30512 80118 1230/ 9930/ 
10182 21182 30182 
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 18 Jan 2018 until 20 Jan
2018
PREDICTIONS FOR 18 Jan 2018  10CM FLUX: 071 / AP: 004
PREDICTIONS FOR 19 Jan 2018  10CM FLUX: 071 / AP: 010
PREDICTIONS FOR 20 Jan 2018  10CM FLUX: 071 / AP: 016
COMMENT: Over the past 24 hours solar activity has been quiet. No
significant flares have been recorded. Active Region (AR) 2696 (Mcintosh
class:Bxo; Mag. type:Beta) is the only region on the disk, producing a B9.7
class flare. Flaring activity from the region has been increasing. There
are no other significant ARs on the solar disk. No Earth directed Coronal
Mass Ejections (CMEs) have been detected. Solar activity is expected to
remain low over the next 24 hours with a chance of C-class flares.
The solar wind speed has fluctuated around 350 km/s over the past 24 hours.
The total magnetic field strength has remained around 5 nT. The Bz
component has been mainly positive ranging between -1 and +5 nT.
Geomagnetic conditions ranged between Kp index 0-1 (NOAA) and local K index
0-1 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected
to be quiet, however a coronal hole is currently passing disk centre and
may increase geomagnetic activity in 2-3 days.
TODAY'S ESTIMATED ISN  : 014, BASED ON 12 STATIONS.
99999
UGEOI 30512 80118 1230/ 17/// 
10020 20710 3001/ 4//// 80001 90040 
99999

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

UGEOR 30512 80118 1230/ 17/08 18101 
10070 2//// 3//// 4321/ 50040 60010 20712 02000 
99999
USSPS 31405 18115 01432 70002 30812 21304
USSPS 32404 16089 01632 03003 22113 21406
USSPS 21305 16166 01622 94005 21615 31406
UMAGF 30503 80118 1004/ 17062 1/006 21210 30101
UMAGF 31523 80118 0000/ 17004 1/001 20001 31001
#--------------------------------------------------------------------#
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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.