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 Jun 19 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 90619
SIDC SOLAR BULLETIN 19 Jun 2019, 1230UT
SIDC FORECAST (valid from 1230UT, 19 Jun 2019 until 21 Jun 2019)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Quiet (A<20 and K<4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 19 Jun 2019  10CM FLUX: 067 / AP: 008
PREDICTIONS FOR 20 Jun 2019  10CM FLUX: 067 / AP: 008
PREDICTIONS FOR 21 Jun 2019  10CM FLUX: 068 / AP: 006
COMMENT: Solar activity was at very low levels. The Sun remains spotless
and no significant flares have been recorded.  No Earth directed coronal
mass ejections (CMEs) were observed over the last 24 hours in the available
coronagraph imagery. The greater than 10 MeV proton flux was at nominal
values. Solar activity is expected to remain at very low levels.

The solar wind fluctuated between 300 and 340 km/s (DSCOVR). Bz varied
between -4 and +4 nT. The interplanetary magnetic field was predominantly
directed away from the Sun (positive sector), but switched to be directed
towards the Sun from approximately 8 UT on June 19. Quiet to unsettled
geomagnetic conditions were observed, with the Kp index (NOAA) registering
1 and the local K index (Dourbes) ranging between 1-3 over the past 24
hours.

Quiet geomagnetic conditions are expected, with some unsettled periods due
to the solar wind streams associated with a series of fragmented negative
polarity coronal holes. The possibility of isolated active periods is also
not excluded.

TODAY'S ESTIMATED ISN  : 000, BASED ON 21 STATIONS.

SOLAR INDICES FOR 18 Jun 2019
WOLF NUMBER CATANIA    : 000
10CM SOLAR FLUX        : 067
AK CHAMBON LA FORET    : 008
AK WINGST              : 004
ESTIMATED AP           : 003
ESTIMATED ISN          : 000, BASED ON 30 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.