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 21 1230 UTC
:Product: documentation at http://www.sidc.be/products/xut
#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium)                       #
#--------------------------------------------------------------------#
GEOALERT BRU202
UGEOA 30512 80721 1230/ 9930/ 
10212 20212 30212 
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 21 Jul 2018 until 23 Jul
2018
PREDICTIONS FOR 21 Jul 2018  10CM FLUX: 070 / AP: 008
PREDICTIONS FOR 22 Jul 2018  10CM FLUX: 070 / AP: 005
PREDICTIONS FOR 23 Jul 2018  10CM FLUX: 069 / AP: 006
COMMENT: Solar activity is extremely low without any flaring activity
reported during last 24 hours. We do not expect any change of the activity
in the coming hours.
Coronagraph images do not show signatures of the Earth directed CMEs, and
the solar protons are at the background level.

Solar wind speed has increased and it presently amounts about 510 km/s. The
maximum solar wind speed (about 550 km/s), during last 24 hours was reached
at about 11:20 UT today. The interplanetary magnetic filed magnitude is
presently about 8 nT.
The patchy but rather extended equatorial coronal hole (possibly even
connected with the southern polar coronal hole), has reached central
meridian early this morning. The associated fast solar wind is expected at
the Earth in the mid of the day on July 24. The geomagnetic conditions are
presently unsettled to quiet and we expect such a geomagnetic conditions to
persist in the coming hours.

TODAY'S ESTIMATED ISN  : 000, BASED ON 12 STATIONS.
99999
UGEOI 30512 80721 1230/ 20/// 
10000 20710 3009/ 4//// 80000 90000 
99999

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

UGEOR 30512 80721 1230/ ///// ///// 
99999
UMAGF 30503 80721 1004/ 20061 1/015 21221 33322
UMAGF 31523 80721 0000/ 20006 1/009 22113 32233
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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.