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: 2019 Dec 14 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 91214
SIDC SOLAR BULLETIN 14 Dec 2019, 1230UT
SIDC FORECAST (valid from 1230UT, 14 Dec 2019 until 16 Dec 2019)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Quiet (A<20 and K<4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 14 Dec 2019  10CM FLUX: 069 / AP: 006
PREDICTIONS FOR 15 Dec 2019  10CM FLUX: 069 / AP: 009
PREDICTIONS FOR 16 Dec 2019  10CM FLUX: 069 / AP: 006
COMMENT: Solar flaring activity continues to be very low and we expect such
a low level of flaring activity 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 360 km/s and the interplanetary
magnetic field magnitude is 4 nT. Elongated and patchy equatorial coronal
hole of positive polarity has reached central meridian this morning. The
solar wind originating from this coronal hole might arrive to Earth late on
December 17.
The geomagnetic conditions are presently quiet and we expect quiet to
possibly unsettled geomagnetic conditions (due to expected arrival of the
solar wind originating from the equatorial coronal hole of negative
polarity that reached central meridian in the evening of December 10) in
the coming hours.

TODAY'S ESTIMATED ISN  : 000, BASED ON 25 STATIONS.

SOLAR INDICES FOR 13 Dec 2019
WOLF NUMBER CATANIA    : 000
10CM SOLAR FLUX        : 069
AK CHAMBON LA FORET    : 005
AK WINGST              : 004
ESTIMATED AP           : 003
ESTIMATED ISN          : 000, BASED ON 12 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.