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

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Latest issue

:Issued: 2018 Dec 09 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 81209
SIDC SOLAR BULLETIN 09 Dec 2018, 1230UT
SIDC FORECAST (valid from 1230UT, 09 Dec 2018 until 11 Dec 2018)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Quiet (A<20 and K<4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 09 Dec 2018  10CM FLUX: 069 / AP: 008
PREDICTIONS FOR 10 Dec 2018  10CM FLUX: 069 / AP: 011
PREDICTIONS FOR 11 Dec 2018  10CM FLUX: 069 / AP: 007
COMMENT: The solar activity has been quiet over the past 24 hours. The
bipolar sunspot group (Catania sunspot group 2, NOAA 2729) remained
globally stable and did not produce any significant flare. Flaring
conditions are expected to remain quiet with a very small change of C-class
flare.

No Earth directed Coronal Mass Ejection has been observed. The greater than
10 MeV solar protons flux remained at nominal levels over the past 24 hours
and is expected to remain so.

The solar wind Earth environment is under the influence of the fastsolar
wind associated with the Coronal Hole (which reached the central meridian
on December 04). The wind speed continued to gradually increase and reached
the values around 610 km/s, it is now fluctuating around 510-560 km/s; The
interplanetary magnetic field strength fluctuated between 5 and 11 nT and
the southward magnetic component between -4 and 9 nT being mainly positive.
The enhanced solar wind conditions are expected to persist in the following
days as long as Earth remains under the influence of the solar wind
associated with the coronal hole.

The geomagnetic conditions were quiet to unsettled with a short period of
active condition observed by the local station in Dourbes (K-Dourbs=4) on
December 8, at 15:00 UT. The conditions are expected to remain the same in
response to an enhanced interplanetary magnetic field, short periods of
active condition cannot be fully excluded especially if there is a
prolonged period of southward directed Bz component.

TODAY'S ESTIMATED ISN  : 000, BASED ON 12 STATIONS.

SOLAR INDICES FOR 08 Dec 2018
WOLF NUMBER CATANIA    : ///
10CM SOLAR FLUX        : ///
AK CHAMBON LA FORET    : ///
AK WINGST              : ///
ESTIMATED AP           : ///
ESTIMATED ISN          : 000, BASED ON 13 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.