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 23 1233 UTC :Product: documentation at http://www.sidc.be/products/tot #--------------------------------------------------------------------# # DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC # #--------------------------------------------------------------------# SIDC URSIGRAM 20523 SIDC SOLAR BULLETIN 23 May 2012, 1221UT SIDC FORECAST (valid from 1230UT, 23 May 2012 until 25 May 2012) SOLAR FLARES : Eruptive (C-class flares expected, probability >= 50%) GEOMAGNETISM : Quiet (A<20 and K<4) SOLAR PROTONS : Quiet PREDICTIONS FOR 23 May 2012 10CM FLUX: 119 / AP: 018 PREDICTIONS FOR 24 May 2012 10CM FLUX: 117 / AP: 009 PREDICTIONS FOR 25 May 2012 10CM FLUX: 119 / AP: 006 COMMENT: Catania sunspot group 39 (NOAA AR 1484) produced a C1.2 flare peaking at 00:27 UT today. More C-class flares can be expected from this group, as well as from recently emerged Catania sunspot group 47 (NOAA AR 1488). The post-shock solar wind flow was followed by a fast solar wind stream (with the speed reaching 700 km/s) from a small low-latitude coronal hole in the southern hemisphere. Due to high interplanetary magnetic field (IMF) magnitude (that reached 15 nT), active geomagnetic conditions (K = 4) were reported by Dourbes and IZMIRAN and minor storm conditions (K = 5) were reported by NOAA. Currently the solar wind speed is still elevated (around 620 km/s), but the IMF magnitude decreased to average values (around 4 nT). We therefore expect quiet geomagnetic conditions. TODAY'S ESTIMATED ISN : 055, BASED ON 13 STATIONS. SOLAR INDICES FOR 22 May 2012 WOLF NUMBER CATANIA : 114 10CM SOLAR FLUX : 121 AK CHAMBON LA FORET : 029 AK WINGST : 025 ESTIMATED AP : 024 ESTIMATED ISN : 055, BASED ON 30 STATIONS. NOTICEABLE EVENTS SUMMARY DAY BEGIN MAX END LOC XRAY OP 10CM RADIO BURST TYPES Catania NOAA NOTE NONE END USSPS 31405 23076 11942 36005 47415 21304 39015 44511 25515 43013 10817 21307 44002 37223 21303 47002 14912 01205 48001 41712 0/102 49001 24719 0/102 50001 24829 0/101 UMAGF 30503 20523 1004/ 22063 1/029 22234 33334 UMAGF 31523 20523 ///// 2200/ 1/025 23433 34544 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.