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 Sep 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 60929
SIDC SOLAR BULLETIN 29 Sep 2016, 1230UT
SIDC FORECAST (valid from 1230UT, 29 Sep 2016 until 01 Oct 2016)
SOLAR FLARES  : Quiet conditions (<50% probability of C-class flares)
GEOMAGNETISM  : Minor storm expected (A>=30 or K=5)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 29 Sep 2016  10CM FLUX: 083 / AP: 028
PREDICTIONS FOR 30 Sep 2016  10CM FLUX: 080 / AP: 018
PREDICTIONS FOR 01 Oct 2016  10CM FLUX: 077 / AP: 011
COMMENT: The only active region observed on the visible side of the Sun,
NOAA AR 2597, is presently situated close to the west solar limb. Although
it was the source of only B-class flares during last 48 hours, it could be
still source of the isolated C-class flare in the coming hours.  No Earth
directed CMEs were observed in the last 24 hours.
Earth is presently inside the fast solar wind with the speed of about 680
km/s. The interplanetary magnetic field magnitude is about 7 nT, and the Bz
component of the interplanetary magnetic field is fluctuating between 2 nT
and -9 nT. The arrival of the fast solar wind from the large coronal hole
in the northern hemisphere has induced major storm conditions, lasting for
several hours, in the evening of September 28 (starting at about 19 UT).
The local station at Dourbes reported K=6, and NOAA reported Kp=6. We
expect disturbed geomagnetic conditions to continue in the coming hours.
TODAY'S ESTIMATED ISN  : 016, BASED ON 16 STATIONS.

SOLAR INDICES FOR 28 Sep 2016
WOLF NUMBER CATANIA    : 041
10CM SOLAR FLUX        : 084
AK CHAMBON LA FORET    : ///
AK WINGST              : 040
ESTIMATED AP           : 039
ESTIMATED ISN          : 032, BASED ON 26 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.