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: 2014 Oct 01 1234 UTC
:Product: documentation at http://www.sidc.be/products/meu
#--------------------------------------------------------------------#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
# (RWC Belgium)                                                      #
#--------------------------------------------------------------------#
SIDC URSIGRAM 41001
SIDC SOLAR BULLETIN 01 Oct 2014, 1210UT
SIDC FORECAST (valid from 1230UT, 01 Oct 2014 until 03 Oct 2014)
SOLAR FLARES  : Eruptive (C-class flares expected, probability >=50%)
GEOMAGNETISM  : Active conditions expected (A>=20 or K=4)
SOLAR PROTONS : Warning condition (activity levels expected to increase,
but no numeric forecast given)
PREDICTIONS FOR 01 Oct 2014  10CM FLUX: 155 / AP: 015
PREDICTIONS FOR 02 Oct 2014  10CM FLUX: 150 / AP: 017
PREDICTIONS FOR 03 Oct 2014  10CM FLUX: 147 / AP: 017
COMMENT: Only one C-class flare was observed during the period. This C6.7
flare was located in NOAA 2172 and peaked at 03:06UT. The other 8 sunspot
groups have been quiet. NOAA 2178 seems to be the most complex, with
opposite magnetic polarities close to each other but no apparent delta
structure. A CME first observed by LASCO at 08:48UT on 01 October was
associated to a prominence eruption near the east limb. It is not Earth
directed. The x-ray background flux is still above the C1-level. Two
20-degrees long filaments visible in the western solar hemisphere have
remained quiet.       C-class flaring is expected, with still a chance on
an isolated M-class flare.     Solar wind speed varied between 350 and 400
km/s, with peaks near 450 km/s. Bz fluctuated between -7 and +5 nT. A few
isolated active periods were recorded. Geomagnetic conditions are expected
to be quiet to unsettled, with isolated active periods possible.
TODAY'S ESTIMATED ISN  : 103, BASED ON 12 STATIONS.

SOLAR INDICES FOR 30 Sep 2014
WOLF NUMBER CATANIA    : 185
10CM SOLAR FLUX        : 162
AK CHAMBON LA FORET    : 023
AK WINGST              : 014
ESTIMATED AP           : 014
ESTIMATED ISN          : ///, BASED ON /// 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.