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 Aug 15 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 00815
SIDC SOLAR BULLETIN 15 Aug 2020, 1230UT
SIDC FORECAST (valid from 1230UT, 15 Aug 2020 until 17 Aug 2020)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Quiet (A<20 and K<4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 15 Aug 2020  10CM FLUX: 072 / AP: 005
PREDICTIONS FOR 16 Aug 2020  10CM FLUX: 072 / AP: 007
PREDICTIONS FOR 17 Aug 2020  10CM FLUX: 072 / AP: 007
COMMENT: The solar activity was mostly quiet over the past 24 hours. A
C2.0-class flare was observed today in August 15 at 06:47 UTC. This flare
was located in the decaying sunspots NOAA-AR 2770, which is now turning
over the West limb. The solar activity is expected to remain at low levels.

A Coronal Mass Ejection associated with the C2.0-flare was most probably
triggered along with this C2.0-flare. Imagery from the upper corona will be
available soon to confirm this. No Coronal Mass Ejections with Earth-
components were identified in the available coronagraphic imagery or on-
disc in the last 24 hours.

The greater than 10 MeV proton flux was at nominal levels over the past 24
hours and is expected to stay at nominal levels for the next 24 hours. The
greater than 2 MeV electron flux decreased further and fluctuated from
nominal to moderate levels over the past 24 hours . The flux is expected to
remain between nominal and moderate levels over the next 24 hours.

The Earth continued to be under the influence of the slow solar wind
streams with the solar wind speed around 290-320 km/s, the total
interplanetary magnetic field below 5 nT, and the Bz magnetic field
components fluctuating between -4 nT and +5 nT. The solar wind conditions
are expected to remain mostly nominal for the next days.

Geomagnetic conditions were quiet, and quiet conditions are expected for
the next following days.

TODAY'S ESTIMATED ISN  : 000, BASED ON 18 STATIONS.

SOLAR INDICES FOR 14 Aug 2020
WOLF NUMBER CATANIA    : ///
10CM SOLAR FLUX        : 071
AK CHAMBON LA FORET    : 006
AK WINGST              : 006
ESTIMATED AP           : 004
ESTIMATED ISN          : 005, BASED ON 30 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                                       #
#                                                                    #
# Website         http://www.sidc.be.                                #
# E-mail          sidc-support@oma.be                                #
# To unsubscribe  http://www.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.