Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 15-04-2021 and time 18:32:25 (Italy) in region 2 km NW Sarnano (MC)

A magnitude ML 1.0 earthquake occured in region: 2 km NW Sarnano (MC), on

  • 15-04-2021 16:32:25 (UTC)
  • 15-04-2021 18:32:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0550, 13.2870 at 23 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sarnano MC 2 3264 3264
Gualdo MC 5 815 4079
Cessapalombo MC 7 512 4591
San Ginesio MC 7 3498 8089
Bolognola MC 8 142 8231
Camporotondo di Fiastrone MC 9 563 8794
Acquacanina MC 9 121 8915
Amandola FM 10 3629 12544
Sant'Angelo in Pontano MC 10 1436 13980
Caldarola MC 11 1823 15803
Fiastra MC 11 559 16362
Penna San Giovanni MC 11 1108 17470
Ripe San Ginesio MC 12 852 18322
Monte San Martino MC 13 765 19087
Belforte del Chienti MC 13 1886 20973
Montefortino FM 13 1178 22151
Colmurano MC 14 1263 23414
Smerillo FM 14 365 23779
Comunanza AP 15 3166 26945
Serrapetrona MC 16 966 27911
Montefalcone Appennino FM 16 424 28335
Fiordimonte MC 16 202 28537
Falerone FM 16 3337 31874
Pievebovigliana MC 16 866 32740
Loro Piceno MC 16 2401 35141
Servigliano FM 17 2336 37477
Ussita MC 17 444 37921
Tolentino MC 17 20069 57990
Montappone FM 18 1682 59672
Montemonaco AP 18 604 60276
Santa Vittoria in Matenano FM 18 1330 61606
Urbisaglia MC 18 2628 64234
Monte Vidon Corrado FM 18 731 64965
Massa Fermana FM 19 963 65928
Pieve Torina MC 19 1458 67386
Force AP 20 1354 68740
Monteleone di Fermo FM 20 395 69135
Camerino MC 20 6974 76109
Muccia MC 20 915 77024

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km E of Foligno (57155 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
65 Km S of Ancona (100861 inhabitants)
73 Km E of Perugia (166134 inhabitants)
76 Km NE of Terni (111501 inhabitants)
79 Km N of L'Aquila (69753 inhabitants)
90 Km S of Fano (60888 inhabitants)
93 Km NW of Montesilvano (53738 inhabitants)
100 Km SE of Pesaro (94582 inhabitants)
100 Km NW of Pescara (121014 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
Reviewed
Rev100 		ML 1.0 2021-04-15
16:32:25		 43.0547 13.2867 23 2021-04-15
16:41:12		 Sala Sismica INGV-Roma 89122551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-15 16:32:25 ± 0.14
Latitude 43.0547 ± 0.0045
Longitude 13.2867 ± 0.0098
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 89122551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 701
Semi-minor axis of confidence ellipse (meter) 433
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 79
Circular confidence region, given by single value of horizontal uncertainty (meter) 700.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.32735
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 89122551
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-15 16:41:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.CLTB.HHZ. 2021-04-15T16:34:06.76 3.0 positive manual Pg 23.129999 0
AC.VLO.HHZ. 2021-04-15T16:33:53.32 3.0 undecidable manual Pg 10.1 0
IV.PIPA.HHZ. 2021-04-15T16:33:43.05 3.0 undecidable manual Pg 11.72 0
IV.CAPR.HNZ. 2021-04-15T16:33:41.05 3.0 undecidable manual Sn -3.38 0
ST.CARE.EHZ. 2021-04-15T16:33:39.67 3.0 undecidable manual Sn -9.99 0
IV.MTGR.HHZ. 2021-04-15T16:33:37.57 3.0 undecidable manual Pn -1.66 0
IV.ZEN8.EHZ. 2021-04-15T16:33:37.24 3.0 undecidable manual Sg 1.37 0
IV.CADC.EHZ. 2021-04-15T16:33:32.04 3.0 undecidable manual Sn -6.87 0
IV.SBPO.HNZ. 2021-04-15T16:33:24.45 3.0 undecidable manual Sg 2 0
OE.ARSA.BHZ. 2021-04-15T16:33:14.72 3.0 positive manual Pn -9.96 0
IV.RCAV.EHZ. 2021-04-15T16:33:05.48 3.0 undecidable manual Sn 1.76 0
IV.VOBA.EHZ. 2021-04-15T16:33:01.32 3.0 positive manual Pg -3.11 0
IV.MNTV.EHZ. 2021-04-15T16:32:50.72 3.0 undecidable manual Pn -6.69 0
IV.FIR.HHZ. 2021-04-15T16:32:39.77 3.0 undecidable manual P -2.48 0
IV.CING.HHZ. 2021-04-15T16:32:39.14 0.6 undecidable manual S 348 36.3414 116 0.31 45
IV.EL6.EHZ. 2021-04-15T16:32:38.66 0.3 undecidable manual S 334 33.9438 117 0.41 67
IV.NRCA.HHZ. 2021-04-15T16:32:37.01 0.3 undecidable manual S 210 28.2495 123 0.08 73
IV.MML1.HNZ. 2021-04-15T16:32:36.92 0.6 undecidable manual S 284 26.3514 125 0.41 45
IV.MC2.EHZ. 2021-04-15T16:32:35.17 0.6 undecidable manual S 207 17.7711 138 0.38 47
IV.MF5.EHZ. 2021-04-15T16:32:34.73 0.6 undecidable manual S 118 15.873 141 0.26 48
IV.FDMO.HHZ. 2021-04-15T16:32:34.50 0.6 undecidable manual S 263 16.2726 141 -0.04 50
IV.MMO1.EHZ. 2021-04-15T16:32:34.60 0.3 undecidable manual S 169 17.5713 138 -0.15 73
IV.EL6.EHZ. 2021-04-15T16:32:33.06 0.1 undecidable manual P 334 33.9438 117 0.03 97
IV.CING.HHZ. 2021-04-15T16:32:33.14 0.1 undecidable manual P 348 36.3414 116 -0.22 93
IV.PF6.EHZ. 2021-04-15T16:32:33.53 0.6 undecidable manual S 321 11.877 150 -0.34 47
IV.CSP1.EHN. 2021-04-15T16:32:33.24 0.3 undecidable manual S 302 7.7811 159 -0.16 74
IV.NRCA.HHZ. 2021-04-15T16:32:32.22 0.1 positive manual P 210 28.2495 123 -0.05 97
IV.MML1.HNZ. 2021-04-15T16:32:32.11 0.1 undecidable manual P 284 26.3514 125 0.08 97
IV.MC2.EHZ. 2021-04-15T16:32:31.18 0.6 negative manual P 207 17.7711 138 0.15 49
IV.FDMO.HHZ. 2021-04-15T16:32:30.82 0.1 negative manual P 263 16.2726 141 -0.06 99
IV.CSP1.EHN. 2021-04-15T16:32:30.12 0.1 undecidable manual P 302 7.7811 159 -0.1 100
IV.MMO1.EHZ. 2021-04-15T16:32:30.85 0.3 positive manual P 169 17.5713 138 -0.16 73
IV.MF5.EHZ. 2021-04-15T16:32:30.95 0.3 negative manual P 118 15.873 141 0.1 74
IV.PF6.EHZ. 2021-04-15T16:32:30.22 0.1 undecidable manual P 321 11.877 150 -0.28 96
IV.SSFR.HNZ. 2021-04-15T16:32:26.02 3.0 negative manual Pn -1.1 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.8 0.0000327 0.12 AML other m 2021-04-15T16:32:34.81
IV.FDMO.HHN. ML:0.7 0.00002435 1.22 AML other m 2021-04-15T16:32:35.10
IV.NRCA.HHE. ML:1.2 0.00006485 0.56 AML other m 2021-04-15T16:32:37.42
IV.NRCA.HHN. ML:1.2 0.0000675 0.16 AML other m 2021-04-15T16:32:38.38
IV.MF5.EHE. ML:1.0 0.00005106261 0.1408 AML other m 2021-04-15T16:32:34.98
IV.MF5.EHN. ML:1.2 0.00008229758 0.2176 AML other m 2021-04-15T16:32:34.90
IV.EL6.EHE. ML:0.9 0.000023430734999999998 0.128 AML other m 2021-04-15T16:32:40.36
IV.EL6.EHN. ML:0.9 0.000028959949999999997 0.6784 AML other m 2021-04-15T16:32:39.50
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