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 tot

Latest issue

:Issued: 2018 Jan 21 1230 UTC
:Product: documentation at http://www.sidc.be/products/tot
#--------------------------------------------------------------------#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
#--------------------------------------------------------------------#
SIDC URSIGRAM 80121
SIDC SOLAR BULLETIN 21 Jan 2018, 1230UT
SIDC FORECAST (valid from 1230UT, 21 Jan 2018 until 23 Jan 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 21 Jan 2018  10CM FLUX: 071 / AP: 011
PREDICTIONS FOR 22 Jan 2018  10CM FLUX: 071 / AP: 007
PREDICTIONS FOR 23 Jan 2018  10CM FLUX: 071 / AP: 006
COMMENT: Over the past 24 hours solar activity has been quiet. No
significant flares have been recorded. No Earth directed Coronal Mass
Ejections (CMEs) have been detected. Solar activity is expected to remain
low over the next 24 hours with a small chance of C-class flares.
The solar wind speed has fluctuated between 400 and 450 km/s over the past
24 hours. The total magnetic field strength has increased from around 6 nT
to 11 nT. The Bz component has ranged between -5 and +11 nT. Geomagnetic
conditions ranged between Kp index 1-2 (NOAA) and local K index 1-3
(Dourbes) over the past 24 hours. The slightly increased solar wind speeds
are the result of a High Speed Stream (HSS) produced by a small coronal
hole that passed the central meridian a few days ago, the HSS combined with
elevated negative Bz may enhance geomagnetic activity over the next day.
TODAY'S ESTIMATED ISN  : 000, BASED ON 11 STATIONS.
99999

SOLAR INDICES FOR 20 Jan 2018
WOLF NUMBER CATANIA    : ///
10CM SOLAR FLUX        : 070
AK CHAMBON LA FORET    : 009
AK WINGST              : 008
ESTIMATED AP           : 008
ESTIMATED ISN          : 000, BASED ON 10 STATIONS.

NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX  END  LOC    XRAY OP  10CM Catania/NOAA RADIO_BURST_TYPES 
NONE
END

UMAGF 30503 80121 1004/ 20060 1/009 22211 32111
UMAGF 31523 80121 0000/ 20004 1/008 23331 31122
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.
Besides the ISES codes like UMAGF, UCOSE and USSPS,
this message contains a forecast 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.