SIDC Ursigram

3-day-forecast of solar and geomagnetic activity.
Source SIDC (RWC-Belgium)
Frequency Daily
Format Encoded data (ISES)
Mail header SIDC Ursigram
SIDC code meu

Archive

Latest issue

:Issued: 2020 Jan 17 1230 UTC
:Product: documentation at http://www.sidc.be/products/meu
#--------------------------------------------------------------------#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
# (RWC Belgium)                                                      #
#--------------------------------------------------------------------#
SIDC URSIGRAM 00117
SIDC SOLAR BULLETIN 17 Jan 2020, 1230UT
SIDC FORECAST (valid from 1230UT, 17 Jan 2020 until 19 Jan 2020)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Quiet (A<20 and K<4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 17 Jan 2020  10CM FLUX: 072 / AP: 006
PREDICTIONS FOR 18 Jan 2020  10CM FLUX: 071 / AP: 004
PREDICTIONS FOR 19 Jan 2020  10CM FLUX: 071 / AP: 005
COMMENT: The visible side of the solar disc is spotless for already several
days. There were no C-class or even B-class flares reported and we expect
solar flaring activity to remain very low in the coming hours. During last
24 hours there were no Earth directed CMEs and the solar protons remained
at the background level.
The solar wind speed is presently about 330 km/s and the interplanetary
magnetic field magnitude is 2 nT.
The solar wind originating from the patchy coronal hole that reached
central meridian in the morning of January 16 might be expected at the
Earth in the second half of January 20.
Presently geomagnetic conditions are quiet to unsettled and we expect them
to stay so in the coming hours.

TODAY'S ESTIMATED ISN  : 000, BASED ON 10 STATIONS.

SOLAR INDICES FOR 16 Jan 2020
WOLF NUMBER CATANIA    : 000
10CM SOLAR FLUX        : 072
AK CHAMBON LA FORET    : 006
AK WINGST              : 004
ESTIMATED AP           : 003
ESTIMATED ISN          : 000, BASED ON 24 STATIONS.

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

BT
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Details

The SIDC ursigram starts with the code SIDC URSIGRAM YMMDD, where
Y is the last digit of the year number,
MM is the number of the month,
DD is the day of the month.

A forecast is given on:
the global flare probability,
geomagnetic disturbances,
solar proton events.
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
COMMENT
ESTIMATED ISN : xxx, based on xx stations.
where ISN stands for International Sunspot Number.

OBSERVED SOLAR INDICES FOR THE DAY BEFORE
SUNSPOT INDEX : xxx, the Wolf number observed by Catania
10CM SOLAR FLUX : xxx,
AK CHAMBON LA FORET : xxx,
AK WINGST : xxx,
ESTIMATED AP : xxx,
ESTIMATED ISN : xxx, based on xx stations.

NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX END LOC XRAY OP 10CM TYPE Catania NOAA NOTE

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.