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

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Latest issue

:Issued: 2018 Aug 14 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 80814
SIDC SOLAR BULLETIN 14 Aug 2018, 1230UT
SIDC FORECAST (valid from 1230UT, 14 Aug 2018 until 16 Aug 2018)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Active conditions expected (A>=20 or K=4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 14 Aug 2018  10CM FLUX: 068 / AP: 009
PREDICTIONS FOR 15 Aug 2018  10CM FLUX: 067 / AP: 021
PREDICTIONS FOR 16 Aug 2018  10CM FLUX: 067 / AP: 015
COMMENT: The solar activity has been quiet over the past 24 hours. The
visible solar disc is spotless and no significant flare has been recorded.
Quiet flaring conditions are expected for the next 24-hour period.

No Earth directed Coronal Mass Ejection has been observed. The solar
protons flux remained at nominal levels over the past 24 hours and is
expected to remain so.

The solar wind speed reached about 440 km/s on July 13 around 11:00-12:00
UT and decreased to about 325 km/s, the total interplanetary magnetic
fields remained below 3 nT, and the southward magnetic component varied
between -2 and 2.5 nT. Solar wind parameters are expected to remain at
nominal levels for the next 24 hours. The fast solar wind associated to the
coronal hole that reached the central meridian on July 11 is expected to
reach Earth on July 14 around midnight, which will enhance the solar wind
parameters.

The geomagnetic conditions were quiet and it is expected to remain quiet as
the Earth remains in the slow solar wind speed regime. Enhancement of the
geomagnetic conditions are expected on July 14 with to the arrival of the
high speed solar wind associated with the coronal hole.

TODAY'S ESTIMATED ISN  : 012, BASED ON 16 STATIONS.

SOLAR INDICES FOR 13 Aug 2018
WOLF NUMBER CATANIA    : ///
10CM SOLAR FLUX        : 068
AK CHAMBON LA FORET    : 008
AK WINGST              : 004
ESTIMATED AP           : 004
ESTIMATED ISN          : 000, BASED ON 25 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.