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 Jan 20 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 90120
SIDC SOLAR BULLETIN 20 Jan 2019, 1230UT
SIDC FORECAST (valid from 1230UT, 20 Jan 2019 until 22 Jan 2019)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Quiet (A<20 and K<4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 20 Jan 2019  10CM FLUX: 069 / AP: 004
PREDICTIONS FOR 21 Jan 2019  10CM FLUX: 069 / AP: 007
PREDICTIONS FOR 22 Jan 2019  10CM FLUX: 069 / AP: 015
COMMENT: Solar X-ray flux remained below B level throughout the period.
The Solar disk is spotless and X-ray flux is expected to continue to be
below C level.

No earth directed CMEs have been recorded.

The proton flux levels were at background values and are expected to remain
so.

Solar wind conditions are nominal. Solar wind speed decreased further from
around 390 km/s to around 340-350 km/s. Total magnetic field was below 4nT.
The magnetic field phi angle was predominantly in the negative sector.
Nominal Solar wind conditions are expected over the next days. The Solar
wind sector change preceding the coronal hole that is now transiting the
central meridian is not expected before January 22 and further associated
Solar wind enhancements are expected to set in January 23/24.

Geomagnetic conditions were mostly quiet (local K Dourbes 0-2) with an
isolated unsettled period observed in NOAA Kp (0-3).
Quiet geomagnetic conditions are expected over the next days, but will
later increase to unsettled (from January 22) and thereafter (January
23/24) active periods.
TODAY'S ESTIMATED ISN  : 000, BASED ON 16 STATIONS.

SOLAR INDICES FOR 19 Jan 2019
WOLF NUMBER CATANIA    : ///
10CM SOLAR FLUX        : 070
AK CHAMBON LA FORET    : 010
AK WINGST              : 007
ESTIMATED AP           : 006
ESTIMATED ISN          : 000, BASED ON 20 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.