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: 2020 Sep 27 1230 UTC
:Product: documentation at http://www.sidc.be/products/xut
#--------------------------------------------------------------------#
# GEOALERT message from the SIDC (RWC-Belgium)                       #
#--------------------------------------------------------------------#
GEOALERT BRU271
UGEOA 30512 00927 1230/ 9930/ 
10272 22272 30272 
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 27 Sep 2020 until 29 Sep
2020
PREDICTIONS FOR 27 Sep 2020  10CM FLUX: 073 / AP: 027
PREDICTIONS FOR 28 Sep 2020  10CM FLUX: 073 / AP: 013
PREDICTIONS FOR 29 Sep 2020  10CM FLUX: 072 / AP: 029
COMMENT: NOAA AR 2773 has lost its sunspot, the Sun is spotless. No flares
in the past 24 hours, none expected above the B level.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available
coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24
hours, and is expected to stay so in the next 24 hours. The greater than 2
MeV electron has passed the 10^3 pfu threshold at 03:00 UT, it was also
above the threshold five hours starting at 13:30 on 26 September.

Geomagnetic conditions have reached minor storm conditions at planetary
levels (Kp = 5) and active conditions locally (KDourbes = 4, but the latest
data are missing). The Earth is still inside the fast solar wind from the
low latitudinal extension of the northern polar coronal hole. Its influence
is fading, mostly unsettled conditions expected for the next 24 hours. In
about 48 hours the fast solar wind emanating from a low latitude large area
coronal hole (still connected to the northern polar one) will affect the
Earth and may cause up to major storm conditions.

TODAY'S ESTIMATED ISN  : 000, BASED ON 13 STATIONS.
99999
UGEOI 30512 00927 1230/ 26/// 
1//// 20730 3025/ 4//// 8//// 9//// 
99999

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

UGEOR 30512 00927 1230/ 25/07 27101 
10042 2//// 3//// 410// 50010 60001 14029 00000 
99999
USSPS 32404 25061 01132 28000 14228 0/101
USSPS 31405 25070 01142 42001 14029 0/101
USSPS 21305 25173 01142 25000 13627 0/101
UMAGF 30503 00927 1004/ 26063 1/029 23342 33423
UMAGF 31523 00927 0000/ 26005 1/025 24434 35334
#--------------------------------------------------------------------#
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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.