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: 2017 Jan 16 1245 UTC
:Product: documentation at http://www.sidc.be/products/meu
#--------------------------------------------------------------------#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
# (RWC Belgium)                                                      #
#--------------------------------------------------------------------#
SIDC URSIGRAM 70116
SIDC SOLAR BULLETIN 16 Jan 2017, 1244UT
SIDC FORECAST (valid from 1230UT, 16 Jan 2017 until 18 Jan 2017)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Quiet (A<20 and K<4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 16 Jan 2017  10CM FLUX: 078 / AP: 003
PREDICTIONS FOR 17 Jan 2017  10CM FLUX: 079 / AP: 003
PREDICTIONS FOR 18 Jan 2017  10CM FLUX: 077 / AP: 007
COMMENT: Solar activity is low, without C-class flares reported during last
24 hours. No significant changes of solar activity are foreseen in the
coming hours. The isolated C-class flares are possible but not very
probable. No Earth directed CMEs were observed in the last 24 hours.

The Earth is presently inside the slow solar wind with the speed of about
320 km/s. The interplanetary magnetic field magnitude is about 4nT, and the
Bz component of the interplanetary magnetic field is fluctuating with
values down to -4 nT. The increase of the solar wind speed is possible in
the coming hours, due to the late arrival of the fast flow associated with
the low latitude extension of the northern polar coronal hole which reached
central meridian in the morning of January 12.
The equatorial coronal hole with the elongated extension towards the south
has crossed central meridian this morning. The associated fast solar wind
might arrive at the Earth late on January 18 or in the morning of January
19. The geomagnetic conditions are presently quiet and we expect them to
stay so in the coming hours.
TODAY'S ESTIMATED ISN  : 024, BASED ON 10 STATIONS.

SOLAR INDICES FOR 15 Jan 2017
WOLF NUMBER CATANIA    : ///
10CM SOLAR FLUX        : 078
AK CHAMBON LA FORET    : 009
AK WINGST              : 006
ESTIMATED AP           : 004
ESTIMATED ISN          : 028, BASED ON 17 STATIONS.

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

BT
#--------------------------------------------------------------------#
# Solar Influences Data analysis Center - RWC Belgium                #
# Royal Observatory of Belgium                                       #
# Fax : 32 (0) 2 373 0 224                                           #
# Tel.: 32 (0) 2 373 0 491                                           #
#                                                                    #
# For more information, see http://www.sidc.be.  Please do not reply #
# directly to this message, but send comments and suggestions to     #
# 'sidctech@oma.be'. If you are unable to use that address, use      #
# 'rvdlinden@spd.aas.org' instead.                                   #
# To unsubscribe, visit http://sidc.be/registration/unsub.php        #
#                                                                    #
# Legal notices:                                                     #
# - Intellectual Property Rights:                                    #
#   http://www.astro.oma.be/common/internet/en/data-policy-en.pdf    #
# - Liability Disclaimer:                                            #
#   http://www.astro.oma.be/common/internet/en/disclaimer-en.pdf     #
# - Use and processing of your personal information:                 #
#   http://www.astro.oma.be/common/internet/en/privacy-policy-en.pdf #
#--------------------------------------------------------------------#

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.