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: 2017 Jun 22 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 70622
SIDC SOLAR BULLETIN 22 Jun 2017, 1230UT
SIDC FORECAST (valid from 1230UT, 22 Jun 2017 until 24 Jun 2017)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Quiet (A<20 and K<4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 22 Jun 2017  10CM FLUX: 074 / AP: 007
PREDICTIONS FOR 23 Jun 2017  10CM FLUX: 075 / AP: 008
PREDICTIONS FOR 24 Jun 2017  10CM FLUX: 076 / AP: 008
COMMENT: Over the past 24 hours solar activity has been low. No significant
flares have been recorded. No Earth directed Coronal Mass Ejections (CMEs)
have been detected. AR 2664  (Mcintosh class:Hsx; Mag. type:Alpha) appears
complex in HMI magnetogram observations and has shown some evidence of
activity, producing several small narrow CMEs which may enhance activity
levels in the coming days. There's a small centrally located filament
channel which looks stable, and a small northern coronal hole located at
high latitudes and central longitudes, which is unlikely to significantly
affect the Earth system but may enhance solar wind speeds in several days.
Solar activity is expected to remain low over the next 24 hours with a low
probability of C-class flares and a very low probability of M-class flares.
The solar wind speed has fluctuated around 350 km/s over the past 24 hours.
The total magnetic field strength has fluctuated between 5 and 8 nT. The Bz
component fluctuated around -5 nT. Geomagnetic conditions ranged between Kp
index 1-3 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours.
Geomagnetic conditions are expected to be quiet.
TODAY'S ESTIMATED ISN  : 024, BASED ON 23 STATIONS.

SOLAR INDICES FOR 21 Jun 2017
WOLF NUMBER CATANIA    : 042
10CM SOLAR FLUX        : 074
AK CHAMBON LA FORET    : 011
AK WINGST              : 006
ESTIMATED AP           : 005
ESTIMATED ISN          : 037, BASED ON 38 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.