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: 2015 Mar 01 1229 UTC
:Product: documentation at http://www.sidc.be/products/meu
#--------------------------------------------------------------------#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
# (RWC Belgium)                                                      #
#--------------------------------------------------------------------#
SIDC URSIGRAM 50301
SIDC SOLAR BULLETIN 01 Mar 2015, 1203UT
SIDC FORECAST (valid from 1230UT, 01 Mar 2015 until 03 Mar 2015)
SOLAR FLARES  : Eruptive (C-class flares expected, probability >=50%)
GEOMAGNETISM  : Active conditions expected (A>=20 or K=4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 01 Mar 2015  10CM FLUX: 123 / AP: 027
PREDICTIONS FOR 02 Mar 2015  10CM FLUX: 125 / AP: 017
PREDICTIONS FOR 03 Mar 2015  10CM FLUX: 127 / AP: 012
COMMENT: Solar activity was dominated by C-class flares from NOAA AR 2290
and 2994. The strongest was a C3.7 flare from NOAA AR 2290 peaking at 05:13
UT. More C-class flares are expected with chances of M-class flaring.  Two
full halo CMEs occurred on February 28. Both were backsided events. One
starting at 04:36 UT (LASCO-C2) and the other at 21:36 UT. Additionally a
CME directed to the NW was seen erupting at 15:12 UT, this is a frontside
event coming from north of NOAA AR 2292. This CME was slow, it  may arrive
to the Earth on March 4 and cause at most minor storm conditions.
Geomagnetic activity was dominated by a fast speed stream that caused
active conditions with isolated minor storm periods starting at midnight on
March 1 and still ongoing. The solar wind speed is around 500 km/s with
magnetic fields intensities of 10 nT. More active conditions can be
expected for today.
TODAY'S ESTIMATED ISN  : 054, BASED ON 14 STATIONS.

SOLAR INDICES FOR 28 Feb 2015
WOLF NUMBER CATANIA    : ///
10CM SOLAR FLUX        : 123
AK CHAMBON LA FORET    : 035
AK WINGST              : 012
ESTIMATED AP           : 013
ESTIMATED ISN          : ///, BASED ON /// 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.