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: 2014 Oct 31 1250 UTC
:Product: documentation at http://www.sidc.be/products/meu
#--------------------------------------------------------------------#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
# (RWC Belgium)                                                      #
#--------------------------------------------------------------------#
SIDC URSIGRAM 41031
SIDC SOLAR BULLETIN 31 Oct 2014, 1210UT
SIDC FORECAST (valid from 1230UT, 31 Oct 2014 until 02 Nov 2014)
SOLAR FLARES  : Active (M-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 31 Oct 2014  10CM FLUX: 135 / AP: 012
PREDICTIONS FOR 01 Nov 2014  10CM FLUX: 130 / AP: 018
PREDICTIONS FOR 02 Nov 2014  10CM FLUX: 130 / AP: 017
COMMENT: During the past 24 hours, solar flaring activity was at the
C-level, with a C9.7 as strongest flare. The background irradiation is
decreasing as Catania group 88 (NOAA 2192) is rounding the west limb.
Flares originated from Catania groups 88, 98 and 3 (NOAA 2192, 2200 and
2201 respectively). The C6.9 flare, originating from Catania group 3,
peaked at 13:12 UT on October 30 and C2.3 flare, originating from Catania
group 98, peaked at 15:03 UT. Both flares were accompanied by radio type II
bursts and narrow eastward propagating CMEs. These CMEs will not have any
impact on Earth.  Due to the position of Catania group 88, we retain the
warning condition for a proton event.      The solar wind speed, observed
by ACE, increased from 350  to 450 km/s, the interplanetary magnetic field
went up in magnitude to about 12 nT and also the temperature increased. A
northern coronal hole (extending from N10 to N55) has passed the central
meridian and the associated high speed stream might arrive at the end of
November 2. Quiet to active conditions are expected, with limited chances
for minor storm conditions.
TODAY'S ESTIMATED ISN  : 060, BASED ON 15 STATIONS.

SOLAR INDICES FOR 30 Oct 2014
WOLF NUMBER CATANIA    : 153
10CM SOLAR FLUX        : 140
AK CHAMBON LA FORET    : 008
AK WINGST              : 006
ESTIMATED AP           : 005
ESTIMATED ISN          : 080, BASED ON 21 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.