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: 2016 Jul 25 1245 UTC
:Product: documentation at http://www.sidc.be/products/meu
#--------------------------------------------------------------------#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
# (RWC Belgium)                                                      #
#--------------------------------------------------------------------#
SIDC URSIGRAM 60725
SIDC SOLAR BULLETIN 25 Jul 2016, 1244UT
SIDC FORECAST (valid from 1230UT, 25 Jul 2016 until 27 Jul 2016)
SOLAR FLARES  : C-class flares expected, (probability >=50%)
GEOMAGNETISM  : Active conditions expected (A>=20 or K=4)
SOLAR PROTONS : Warning condition (activity levels expected to increase,
but no numeric forecast given)
PREDICTIONS FOR 25 Jul 2016  10CM FLUX: 082 / AP: 016
PREDICTIONS FOR 26 Jul 2016  10CM FLUX: 080 / AP: 007
PREDICTIONS FOR 27 Jul 2016  10CM FLUX: 078 / AP: 007
COMMENT: One M class flare was recorded in the past 24 h: M1.9 peaking at
17:43 UT on July 25 from NOAA AR 2567. As this AR rotated over the west
limb, the visible Sun became spotless and flaring activity greatly reduced.
C-class flares can still be expected from this AR in the coming hours.
Geomagnetic conditions were mostly active during past 24 h due to (most
likely) a small ICME that reached ACE around 15:00 UT on July 24
(corresponding to a CME that erupted on July 20). Solar wind speed is
currently at 450 km/s with interplanetary magnetic field magnitude of 5 nT.
Active conditions are possible within 48h  in response to the arrival of
the high speed stream from a northern coronal hole, as well as of the low-
probability glancing blow from the 23 July CME.
TODAY'S ESTIMATED ISN  : 000, BASED ON 24 STATIONS.

SOLAR INDICES FOR 24 Jul 2016
WOLF NUMBER CATANIA    : ///
10CM SOLAR FLUX        : 082
AK CHAMBON LA FORET    : 033
AK WINGST              : 018
ESTIMATED AP           : 018
ESTIMATED ISN          : 014, BASED ON 31 STATIONS.

NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX  END  LOC    XRAY OP  10CM Catania/NOAA RADIO_BURST_TYPES 
24  1730  1743 1812 ////// M1.9          09/2567      
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.