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: 2020 Feb 20 1231 UTC
:Product: documentation at http://www.sidc.be/products/meu
#--------------------------------------------------------------------#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
# (RWC Belgium)                                                      #
#--------------------------------------------------------------------#
SIDC URSIGRAM 00220
SIDC SOLAR BULLETIN 20 Feb 2020, 1230UT
SIDC FORECAST (valid from 1230UT, 20 Feb 2020 until 22 Feb 2020)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Quiet (A<20 and K<4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 20 Feb 2020  10CM FLUX: 071 / AP: 008
PREDICTIONS FOR 21 Feb 2020  10CM FLUX: 071 / AP: 007
PREDICTIONS FOR 22 Feb 2020  10CM FLUX: 071 / AP: 007
COMMENT: No active regions visible on the Sun. No flares observed, nor
expected.

No Earth directed CMEs in the past 24 h. Solar protons have remained at
background levels over the past 24 hours.

The solar wind speed is at 420 km/s with interplanetary magnetic field
magnitude of 4 nT. Quiet to unsettled conditions (K and Kp = 1 - 3) were
observed in the past 24 h. The solar wind from small patchy negative
polarity equatorial coronal holes can still affect the Earth (including the
low latitudinal extension of the southern polar coronal hole). Mostly quiet
to unsettled conditions expected for the next 48 h.

TODAY'S ESTIMATED ISN  : 000, BASED ON 16 STATIONS.

SOLAR INDICES FOR 19 Feb 2020
WOLF NUMBER CATANIA    : 000
10CM SOLAR FLUX        : 071
AK CHAMBON LA FORET    : 017
AK WINGST              : 014
ESTIMATED AP           : 015
ESTIMATED ISN          : 000, BASED ON 27 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.