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 18 1230 UTC
:Product: documentation at http://www.sidc.be/products/xut
#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium)                       #
#--------------------------------------------------------------------#
GEOALERT BRU199
UGEOA 30512 80718 1230/ 9930/ 
10182 20182 30182 
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 18 Jul 2018 until 20 Jul
2018
PREDICTIONS FOR 18 Jul 2018  10CM FLUX: 071 / AP: 006
PREDICTIONS FOR 19 Jul 2018  10CM FLUX: 071 / AP: 007
PREDICTIONS FOR 20 Jul 2018  10CM FLUX: 070 / AP: 012
COMMENT: Solar activity remains to be at very low level, and there were no
flares reported during last 24 hours. As there are no active regions
present at the visible side of the Sun, we expect such a low flaring
activity to persist in the coming hours.
No Earth directed CMEs were observed during last 24 hours, and the solar
protons remained at the background level.

The increase of the solar wind speed, associated with patchy equatorial
coronal hole that reached central meridian on July 16, is expected at the
Earth late on July 19. The unsettled to possibly, but not very probably,
active conditions are expected in the morning of July 20, due to the
expected arrival of the fast solar wind.
The geomagnetic conditions are presently quiet, and we expect them to stay
so in the coming hours.

TODAY'S ESTIMATED ISN  : 000, BASED ON 22 STATIONS.
99999
UGEOI 30512 80718 1230/ 17/// 
10012 20710 3008/ 4//// 80101 90010 
99999

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

UGEOR 30512 80718 1230/ ///// ///// 
99999
USSPS 31405 18060 00042
UMAGF 30503 80718 1004/ 17063 1/011 23122 31201
UMAGF 31523 80718 0000/ 17004 1/008 22332 31212
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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.