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: 2019 Jun 18 1230 UTC
:Product: documentation at http://www.sidc.be/products/xut
#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium)                       #
#--------------------------------------------------------------------#
GEOALERT BRU169
UGEOA 30512 90618 1230/ 9930/ 
10182 21182 30182 
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 18 Jun 2019 until 20 Jun
2019
PREDICTIONS FOR 18 Jun 2019  10CM FLUX: 066 / AP: 011
PREDICTIONS FOR 19 Jun 2019  10CM FLUX: 067 / AP: 011
PREDICTIONS FOR 20 Jun 2019  10CM FLUX: 067 / AP: 004
COMMENT: Solar activity was at very low levels. The Sun remains spotless
and no significant flares have been recorded.  No Earth directed coronal
mass ejections (CMEs) were observed over the last 24 hours in the available
coronagraph imagery. The greater than 10 MeV proton flux was at nominal
values. Solar activity is expected to remain at very low levels.

The solar wind fluctuated between 300 and 345 km/s (DSCOVR). Bz varied
between -4 and +5 nT. The interplanetary magnetic field was predominantly
directed away from the Sun (positive sector). Quiet to unsettled
geomagnetic conditions were observed, with the Kp index ranging between 0-1
(NOAA) and the local K index (Dourbes) ranging between 0-3 over the past 24
hours.

Quiet to unsettled geomagnetic conditions are expected due to the arrival
of the solar wind streams associated with a series of fragmented negative
polarity coronal holes. Isolated active periods are also possible.

TODAY'S ESTIMATED ISN  : 000, BASED ON 21 STATIONS.
99999
UGEOI 30512 90618 1230/ 17/// 
10000 20660 3003/ 4//// 80000 90000 
99999

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

UGEOR 30512 90618 1230/ ///// ///// 
99999
USSPS 31405 18060 00042
UMAGF 30503 90618 1004/ 17062 1/006 21111 30011
UMAGF 31523 90618 0000/ 17000 1/003 21101 32110
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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.