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 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 70120
SIDC SOLAR BULLETIN 20 Jan 2017, 1230UT
SIDC FORECAST (valid from 1230UT, 20 Jan 2017 until 22 Jan 2017)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Quiet (A<20 and K<4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 20 Jan 2017  10CM FLUX: 080 / AP: 010
PREDICTIONS FOR 21 Jan 2017  10CM FLUX: 082 / AP: 010
PREDICTIONS FOR 22 Jan 2017  10CM FLUX: 083 / AP: 007
COMMENT: There are presently five small sunspot groups visible on the solar
disc, as reported by Catania. There were two B-class flares reported this
morning, originating from the newly emerged, Catania sunspot group 81 (NOAA
AR 2628). We expect solar activity to remain on the low level, with B-class
and occasional C-class flares possible. No Earth directed CMEs were
observed during last 24 hours.
The Earth is still inside the fast solar wind, but the wind speed is slowly
decreasing and it presently amounts about 550 km/s. The interplanetary
magnetic field magnitude is about 4 nT.
Due to the still ongoing influence of the fast solar wind, we can expect
unsettled conditions in the coming hours.

TODAY'S ESTIMATED ISN  : 055, BASED ON 18 STATIONS.

SOLAR INDICES FOR 19 Jan 2017
WOLF NUMBER CATANIA    : 071
10CM SOLAR FLUX        : 080
AK CHAMBON LA FORET    : 016
AK WINGST              : 009
ESTIMATED AP           : 010
ESTIMATED ISN          : 033, BASED ON 22 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.