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 Jul 19 1230 UTC
:Product: documentation at http://www.sidc.be/products/xut
#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium)                       #
#--------------------------------------------------------------------#
GEOALERT BRU200
UGEOA 30512 80719 1230/ 9930/ 
10192 20192 30192 
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 19 Jul 2018 until 21 Jul
2018
PREDICTIONS FOR 19 Jul 2018  10CM FLUX: 071 / AP: 008
PREDICTIONS FOR 20 Jul 2018  10CM FLUX: 070 / AP: 012
PREDICTIONS FOR 21 Jul 2018  10CM FLUX: 069 / AP: 008
COMMENT: There are presently no sunspot groups observed on the visible side
of the Sun, and accordingly there was no flaring activity during last 24
hours. No Earth directed CMEs were observed, and the solar protons remained
at the background level.

The Earth is still inside the slow solar wind with the speed of about 370
km/s. The interplanetary magnetic field magnitude is  presently 4 nT.
The increase of the solar wind speed, associated with patchy equatorial
coronal hole that reached central meridian on July 16, might be expected in
the morning of July 20. The unsettled to possibly, but not very probably,
short interval of active conditions might be induced with the expected
arrival of the fast solar wind.

TODAY'S ESTIMATED ISN  : 000, BASED ON 25 STATIONS.
99999
UGEOI 30512 80719 1230/ 18/// 
10000 20710 3004/ 4//// 80000 90000 
99999

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

UGEOR 30512 80719 1230/ ///// ///// 
99999
USSPS 31405 19070 00042
UMAGF 30503 80719 1004/ 18065 1/007 21111 31111
UMAGF 31523 80719 0000/ 18005 1/004 21111 32221
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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.