Map Region : lat:-  lon:-

  North  
West   East
  South  
Show Cities
Show Foreign Cities
Show Fault Mechanism
Show Province Boundaries
Show Stations
Map Title

Magnitude
 :4.5
Date & Time (UTC) 2025-10-20 11:55:44.5
Date & Time (Local) 1404/7/28  15:25:44.5
Location Lat:36.661 Lon: 54.843
Region Golestan Province, 27 km South of Ali Abad
Nearest Cities
24 km North West of Qaleh-ye nokharqan, Semnan Province
25 km North West of Bastam, Semnan Province
27 km North East of Majen, Semnan Province
27 km South of Ali Abad, Golestan Province
29 km North West of Shahrud, Semnan Province
Depth 12 km
Agency
Faults within 150 km:
SHAVAR_F (Length: 87 km) , Distance to epicenter: 11 km 
ASTANEH_F (Length: 72 km) , Distance to epicenter: 29 km 
KHAZAR_F (Length: 523 km) , Distance to epicenter: 37 km 
Number of Phases 22
RMS 0.6
Number of Stations 22
Error in Latitude >1.6 km
Error in Longitude 1.6 km
Error in Depth 2.7 km

Download waveform in seisan format

to download seisan software Click here

to access information about IIEES stations Click here

Amplitude

UIDAgencyStationComponentAmplitudePeriodArrival TimeProccessing TimeSignal Clip
199740IIEES SCGLOZ 10012025-10-20 11:56:002025-10-21 06:34:00n
199741IIEES SCMRVTZ 612025-10-20 11:56:092025-10-21 06:34:00n
199742IIEES SCBJRDZ 312025-10-20 11:56:242025-10-21 06:34:00n
199743IIEES SCCHTHZ 212025-10-20 11:56:362025-10-21 06:34:00n
199744IIEES SCTABSZ 0.812025-10-20 11:56:412025-10-21 06:34:00n
199745IIEES SCNASNZ 0.712025-10-20 11:56:502025-10-21 06:34:00n
199746IIEES SCASAOZ 0.712025-10-20 11:56:532025-10-21 06:34:00n
199747IIEES SCSHRTZ 0.412025-10-20 11:57:062025-10-21 06:34:00n
199748IIEES SCBSRNZ 0.412025-10-20 11:57:142025-10-21 06:34:00n

Phase

AgencyStationComponentPhase TypePhase QualityFirst MotionObserved Arrival TimeTime ResidualLoc. FlagInput WeightDistanceAzimuth
IIEES SCABGHZ EPg E2025-10-20 11:55:45-1.7y09334
IIEES SCGLOZ EPg E2025-10-20 11:56:000y092259
IIEES SCSHROZ EPg E2025-10-20 11:56:01-4n4128125
IIEES SCANJZ EPg E2025-10-20 11:56:10-0.3y0157212
IIEES SCMRVTZ EPg E2025-10-20 11:56:09-0.5y015745
IIEES SCBJRDZ EPn E2025-10-20 11:56:240.1y025663
IIEES SCDAMVZ EPn E2025-10-20 11:56:24-3.4n4283246
IIEES SCCHTHZ EPn E2025-10-20 11:56:360.6y0344256
IIEES SCTABSZ EPn E2025-10-20 11:56:410.6y0393148
IIEES SCGHVRZ EPn E2025-10-20 11:56:430.5y0406233
IIEES SCKAGHZ EPn E2025-10-20 11:56:500.9y045886
IIEES SCNASNZ EPn E2025-10-20 11:56:50-0.7y0467204
IIEES SCYZKHZ EPn E2025-10-20 11:56:27-23.8n4474183
IIEES SCASAOZ EPn E2025-10-20 11:56:53-0.3y0496242
IIEES SCMEHZ EPn E2025-10-20 11:57:05-0.1y0585182
IIEES SCSHRTZ EPn E2025-10-20 11:57:06-0.4y0599124
IIEES SCBSRNZ EPn E2025-10-20 11:57:140.7y0653143
IIEES SCKRBRZ EPn E2025-10-20 11:57:27-0.1y0762166
IIEES SCGHIRZ EPn E2025-10-20 11:57:490y0945191
IIEES SCZHSFZ EPn E2025-10-20 11:57:50-0.6y0958145
IIEES SCGNIZ EPn E2025-10-20 11:57:530.8y0964294
IIEES SCIRSRZ EPn E2025-10-20 11:58:230.4y01216152