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 Nov 19 1236 UTC
:Product: documentation at http://www.sidc.be/products/xut
#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium)                       #
#--------------------------------------------------------------------#
GEOALERT BRU323
UGEOA 30512 71119 1236/ 9930/ 
10192 21192 30192 
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 19 Nov 2017 until 21 Nov
2017
PREDICTIONS FOR 19 Nov 2017  10CM FLUX: 075 / AP: 010
PREDICTIONS FOR 20 Nov 2017  10CM FLUX: 073 / AP: 015
PREDICTIONS FOR 21 Nov 2017  10CM FLUX: 071 / AP: 009
COMMENT: Both sunspot groups, which were observed on the visible side of
the solar disc during last 24 hours, are decaying. Solar flaring activity
was low and will remain so in the coming hours with very low probability
for C-class flares (about 5%).
There were no Earth directed CMEs observed since last report, and the solar
protons remained at background level.

The Earth is within the slow solar wind (speed of about 360 km/s) and the
interplanetary magnetic field magnitude is very low presently amounting
about 1 nT.
The fast solar wind associated with the large equatorial coronal hole
(reached central meridian in the early morning of November 16) is expected
to arrive at the Earth later today. The geomagnetic conditions are
presently quiet and we expect unsettled to active geomagnetic conditions
starting from this evening, due to the expected arrival of the fast solar
wind.
TODAY'S ESTIMATED ISN  : 000, BASED ON 19 STATIONS.
99999
UGEOI 30512 71119 1236/ 18/// 
1//// 20760 3008/ 4//// 8//// 9//// 
99999

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

UGEOR 30512 71119 1236/ 17/08 19102 
10063 2//// 3//// 4321/ 50060 60008 23606 00000 
10064 2//// 3//// 4201/ 50010 60003 42111 00000 
99999
USSPS 21305 17169 02622 84010 23308 31303 85002 42811 01203
USSPS 81202 18033 01322 80005 23109 1/803
UMAGF 30503 71119 1004/ 18067 1/013 22122 32311
UMAGF 31523 71119 0000/ 18005 1/008 22222 32223
#--------------------------------------------------------------------#
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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.