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: 2015 May 29 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 50529
SIDC SOLAR BULLETIN 29 May 2015, 1230UT
SIDC FORECAST (valid from 1230UT, 29 May 2015 until 31 May 2015)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Active conditions expected (A>=20 or K=4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 29 May 2015  10CM FLUX: 094 / AP: 011
PREDICTIONS FOR 30 May 2015  10CM FLUX: 097 / AP: 011
PREDICTIONS FOR 31 May 2015  10CM FLUX: 100 / AP: 001
COMMENT: Solar activity was very low, without any significant flaring.
Sunspot regions 74 (NOAA 2356) and new Catania regions 76 and 77 are to be
monitored while they rotate on the disk. No Earth-bound CMEs were observed.

The solar wind speed has slight increased and achieves values near 400
km/s, while the magnitude of the interplanetary magnetic field is close to
10 nT. Geomagnetic conditions are quiet (K <4) and are expected to slightly
increase within the next 24 hours to
active conditions (K=4).
TODAY'S ESTIMATED ISN  : 024, BASED ON 19 STATIONS.

SOLAR INDICES FOR 28 May 2015
WOLF NUMBER CATANIA    : 011
10CM SOLAR FLUX        : 093
AK CHAMBON LA FORET    : 013
AK WINGST              : 011
ESTIMATED AP           : 010
ESTIMATED ISN          : 009, 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.