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 | tot |
Latest issue
:Issued: 2012 May 21 1257 UTC :Product: documentation at http://www.sidc.be/products/tot #--------------------------------------------------------------------# # DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC # #--------------------------------------------------------------------# SIDC URSIGRAM 20521 SIDC SOLAR BULLETIN 21 May 2012, 1246UT SIDC FORECAST (valid from 1230UT, 21 May 2012 until 23 May 2012) SOLAR FLARES : Eruptive (C-class flares expected, probability >= 50%) GEOMAGNETISM : Quiet (A<20 and K<4) SOLAR PROTONS : Quiet PREDICTIONS FOR 21 May 2012 10CM FLUX: 133 / AP: 007 PREDICTIONS FOR 22 May 2012 10CM FLUX: 135 / AP: 004 PREDICTIONS FOR 23 May 2012 10CM FLUX: 137 / AP: 006 COMMENT: Out of seven sunspot groups currently visible on the solar disk, only Catania sunspot group 39 (NOAA AR 1484) has a significant potential to produce a C-class flare. Two more active regions are appearing from behind the east limb, so the flaring activity may increase. The Earth is currently inside a slow (around 340 km/s) solar wind flow with weak (around 3 nT) interplanetary magnetic field magnitude. We expect quiet geomagnetic conditions. TODAY'S ESTIMATED ISN : 079, BASED ON 09 STATIONS. SOLAR INDICES FOR 20 May 2012 WOLF NUMBER CATANIA : /// 10CM SOLAR FLUX : 131 AK CHAMBON LA FORET : 011 AK WINGST : 014 ESTIMATED AP : 014 ESTIMATED ISN : 083, BASED ON 18 STATIONS. NOTICEABLE EVENTS SUMMARY DAY BEGIN MAX END LOC XRAY OP 10CM RADIO BURST TYPES Catania NOAA NOTE NONE END UMAGF 30503 20521 1004/ 20063 1/011 22232 31101 UMAGF 31523 20521 ///// 2000/ 1/014 23433 34211 BT #--------------------------------------------------------------------# # Solar Influences Data analysis Center - RWC Belgium # # Royal Observatory of Belgium # # Fax : 32 (0) 2 373 0 224 # # Tel.: 32 (0) 2 373 0 491 # # # # For more information, see http://sidc.be/products/tot. # # Please do not reply directly to this message, but send comments # # directly to this message, but send comments and suggestions to # # 'sidctech@oma.be'. If you are unable to use that address, use # # 'rvdlinden@spd.aas.org' instead. # # To unsubscribe, visit http://sidc.be/registration/unsub.php # #--------------------------------------------------------------------#
Details
The SIDC ursigram starts with the code SIDC URSIGRAM YMMDD, whereY is the last digit of the year number,
MM is the number of the month,
DD is the day of the month.
Besides the ISES codes like UMAGF, UCOSE and USSPS,
this message contains a forecast 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.