Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 27-04-2013 and time 01:02:41 (Italy) in region Costa Romagnola meridionale (Rimini, Forli Cesena)

A magnitude ML 1.3 earthquake occured in region: Costa Romagnola meridionale (Rimini, Forli Cesena), on

  • 26-04-2013 23:02:41 (UTC)
  • 27-04-2013 01:02:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.0940, 12.7420 at 19 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Riccione RN 13 34965 34965
Misano Adriatico RN 14 13014 47979
Gabicce Mare PU 14 5781 53760
Cattolica RN 14 17125 70885
Rimini RN 15 147750 218635
Gradara PU 17 4835 223470
San Giovanni in Marignano RN 17 9417 232887
Coriano RN 18 10502 243389

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km E of Rimini (147750 inhabitants)
25 Km NW of Pesaro (94582 inhabitants)
36 Km NW of Fano (60888 inhabitants)
40 Km E of Cesena (96758 inhabitants)
56 Km SE of Ravenna (159116 inhabitants)
58 Km E of Forlì (117913 inhabitants)
72 Km E of Faenza (58541 inhabitants)
82 Km NW of Ancona (100861 inhabitants)
87 Km E of Imola (69797 inhabitants)
98 Km NE of Arezzo (99543 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.3 2013-04-26
23:02:41		 44.0943 12.7422 19 2015-01-20
11:25:35		 Bollettino Sismico Italiano INGV 4323201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-04-26 23:02:41 ± 0.2
Latitude 44.0943 ± 0.0108
Longitude 12.7422 ± 0.0125
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 4323201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 935
Semi-minor axis of confidence ellipse (meter) 856
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 3
Circular confidence region, given by single value of horizontal uncertainty (meter) 940.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 281
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.16817
Epicentral distance of station farthest from the epicenter (degree) 0.57826
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 4323201
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 13:25:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PARC.HHE. 2013-04-26T23:03:01.07 0.6 undecidable manual S 219 63.7917 98 0.35 45
IV.PIEI.HHZ. 2013-04-26T23:03:00.70 0.6 undecidable manual S 195 64.1913 98 -0.12 48
IV.NARO.HHZ. 2013-04-26T23:02:57.90 0.6 undecidable manual S 194 55.2003 100 -0.55 44
IV.MPAG.EHZ. 2013-04-26T23:02:57.50 0.6 undecidable manual S 178 51.6039 101 -0.02 50
IV.FSSB.HHZ. 2013-04-26T23:02:55.80 0.6 undecidable manual S 176 44.622 103 0.11 49
IV.PARC.HHE. 2013-04-26T23:02:52.61 0.3 undecidable manual P 219 63.7917 98 0.19 71
IV.PIEI.HHZ. 2013-04-26T23:02:52.82 0.1 undecidable manual P 195 64.1913 98 0.34 91
IV.RSM2.HHE. 2013-04-26T23:02:51.84 0.6 undecidable manual S 234 29.3484 112 0.04 52
IV.NARO.HHZ. 2013-04-26T23:02:50.77 0.1 undecidable manual P 194 55.2003 100 -0.34 92
IV.PE3.EHE. 2013-04-26T23:02:50.06 0.3 undecidable manual P 204 48.3183 102 -0.02 74
IV.MPAG.EHZ. 2013-04-26T23:02:50.47 0.1 undecidable manual P 178 51.6039 101 -0.11 97
IV.FSSB.HHZ. 2013-04-26T23:02:49.60 0.1 undecidable manual P 176 44.622 103 0.08 100
IV.PESA.HHZ. 2013-04-26T23:02:49.40 0.6 undecidable manual S 155 18.6702 127 0.09 53
IV.RSM2.HHE. 2013-04-26T23:02:47.08 0.3 undecidable manual P 234 29.3484 112 -0.2 74
IV.PESA.HHZ. 2013-04-26T23:02:45.95 0.3 undecidable manual P 155 18.6702 127 0.11 79
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FSSB.HHE. ML:1.2 0.000049500000000000004 0.36 AML other m 2013-04-26T23:02:56.57
IV.FSSB.HHN. ML:1.3 0.0000591 1.48 AML other m 2013-04-26T23:02:57.73
IV.PIEI.HHN. ML:1.3 0.00003585 0.58 AML other m 2013-04-26T23:03:02.52
IV.PIEI.HHE. ML:1.3 0.000033600000000000004 0.58 AML other m 2013-04-26T23:03:03.14
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download