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 Jun 30 1256 UTC
:Product: documentation at http://www.sidc.be/products/meu
#--------------------------------------------------------------------#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
# (RWC Belgium)                                                      #
#--------------------------------------------------------------------#
SIDC URSIGRAM 50630
SIDC SOLAR BULLETIN 30 Jun 2015, 1255UT
SIDC FORECAST (valid from 1230UT, 30 Jun 2015 until 02 Jul 2015)
SOLAR FLARES  : C-class flares expected, (probability >=50%)
GEOMAGNETISM  : Active conditions expected (A>=20 or K=4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 30 Jun 2015  10CM FLUX: 091 / AP: 008
PREDICTIONS FOR 01 Jul 2015  10CM FLUX: 090 / AP: 013
PREDICTIONS FOR 02 Jul 2015  10CM FLUX: 091 / AP: 007
COMMENT: Solar activity was relatively quiet, with only NOAA Active Region
(AR) 2373 producing two C class flares in the last 24 hours, A C2.3 flare
peaking at 14:55 UT and a C2.4 flare peaking at 18:07 UT. Other recurrent
active regions are rotating into view now and may increase solar activity
in the coming days. Proton levels are still declining and are now
below 1 pfu.
The solar wind speed has remained roughly constant over the past 24 hours,
and has varied between 360 km/s to 440 km/s. The total magnetic field has
been slowly decreasing from 6 nT to 3 nT, and the Bz component has
fluctuated from positive to negative between +6 and -5 nT, but remained
around 0 nT for the past several hours. Geomagnetic conditions ranged
between Kp index 1-2 (NOAA) and local K index 1-3 over the past 24 hours.
There were no significant CMEs over the past 24 hours. A small CME emerged
from the East solar limb, possibly from AR 2375. The CME had a recorded
velocity of 625 km/s but is not expected to be geoeffective.


TODAY'S ESTIMATED ISN  : 032, BASED ON 24 STATIONS.

SOLAR INDICES FOR 29 Jun 2015
WOLF NUMBER CATANIA    : 049
10CM SOLAR FLUX        : 097
AK CHAMBON LA FORET    : 010
AK WINGST              : 006
ESTIMATED AP           : 006
ESTIMATED ISN          : 032, BASED ON 34 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.