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: 2018 Jan 19 1235 UTC
:Product: documentation at http://www.sidc.be/products/meu
#--------------------------------------------------------------------#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
# (RWC Belgium)                                                      #
#--------------------------------------------------------------------#
SIDC URSIGRAM 80119
SIDC SOLAR BULLETIN 19 Jan 2018, 1235UT
SIDC FORECAST (valid from 1230UT, 19 Jan 2018 until 21 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 19 Jan 2018  10CM FLUX: 071 / AP: 014
PREDICTIONS FOR 20 Jan 2018  10CM FLUX: 071 / AP: 022
PREDICTIONS FOR 21 Jan 2018  10CM FLUX: 072 / AP: 011
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 increased from around 325 to around 375 km/s over
the past 24 hours. The total magnetic field strength has increased from
around 5 to 9 nT. The Bz component has ranged between -6 and +6 nT.
Geomagnetic conditions ranged between Kp index 0-3 (NOAA) and local K index
0-2 (Dourbes) over the past 24 hours. Geomagnetic conditions may increase
as a coronal hole has passed into the Western hemisphere and may increase
geomagnetic activity later today.
TODAY'S ESTIMATED ISN  : 013, BASED ON 13 STATIONS.

SOLAR INDICES FOR 18 Jan 2018
WOLF NUMBER CATANIA    : 014
10CM SOLAR FLUX        : 071
AK CHAMBON LA FORET    : 006
AK WINGST              : 002
ESTIMATED AP           : 001
ESTIMATED ISN          : 013, BASED ON 18 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.