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: 2015 Jan 24 1242 UTC
:Product: documentation at http://www.sidc.be/products/meu
#--------------------------------------------------------------------#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
# (RWC Belgium)                                                      #
#--------------------------------------------------------------------#
SIDC URSIGRAM 50124
SIDC SOLAR BULLETIN 24 Jan 2015, 1201UT
SIDC FORECAST (valid from 1230UT, 24 Jan 2015 until 26 Jan 2015)
SOLAR FLARES  : Eruptive (C-class flares expected, probability >=50%)
GEOMAGNETISM  : Active conditions expected (A>=20 or K=4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 24 Jan 2015  10CM FLUX: 121 / AP: 007
PREDICTIONS FOR 25 Jan 2015  10CM FLUX: 124 / AP: 007
PREDICTIONS FOR 26 Jan 2015  10CM FLUX: 126 / AP: 007
COMMENT: Only minor C-class flaring in past 24 h, from NOAA AR 2268. The
strongest one was a C3.7 flare with peak at 16:00 UT on January 23. This
region will most likely continue to produce C-class flares, with reduced
chances of M-class flares. Geomagnetic conditions are quiet. Solar wind is
nominal, with speeds of 400 km/s and magnetic field intensities around 5
nT. The fast speed stream from a high latitude coronal hole may influence
the Earth in the next 24h, most likely producing active geomagnetic
conditions at most.
TODAY'S ESTIMATED ISN  : 041, BASED ON 13 STATIONS.

SOLAR INDICES FOR 23 Jan 2015
WOLF NUMBER CATANIA    : ///
10CM SOLAR FLUX        : 121
AK CHAMBON LA FORET    : 010
AK WINGST              : 008
ESTIMATED AP           : 008
ESTIMATED ISN          : 045, BASED ON 17 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.