Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 25-03-2021 and time 06:50:27 (UTC) in region 6 km NW Cortino (TE)

A magnitude ML 1.5 earthquake occured in region: 6 km NW Cortino (TE), on

  • 25-03-2021 06:50:27 (UTC)
  • 25-03-2021 07:50:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6590, 13.4480 at 16 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.

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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
Cortino TE 6 656 656
Rocca Santa Maria TE 7 537 1193
Valle Castellana TE 10 977 2170
Crognaleto TE 13 1297 3467
Acquasanta Terme AP 13 2916 6383
Campotosto AQ 13 542 6925
Amatrice RI 13 2657 9582
Fano Adriano TE 14 296 9878
Accumoli RI 17 667 10545
Torricella Sicura TE 17 2641 13186
Montorio al Vomano TE 17 8218 21404
Pietracamela TE 17 271 21675
Arquata del Tronto AP 18 1178 22853
Capitignano AQ 19 665 23518

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km W of Teramo (54892 inhabitants)
34 Km N of L'Aquila (69753 inhabitants)
60 Km W of Montesilvano (53738 inhabitants)
66 Km W of Pescara (121014 inhabitants)
66 Km E of Terni (111501 inhabitants)
68 Km NW of Chieti (51815 inhabitants)
69 Km E of Foligno (57155 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
94 Km NE of Guidonia Montecelio (88673 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 1.5 2021-03-25
06:50:27		 42.6592 13.4477 16 2021-07-12
16:55:04		 Bollettino Sismico Italiano INGV 88588801
Reviewed
Rev100 		ML 1.4 2021-03-25
06:50:27		 42.662 13.4382 15 2021-03-25
07:07:40		 Sala Sismica INGV-Roma 88454901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-25 06:50:27 ± 0.06
Latitude 42.6592 ± 0.0027
Longitude 13.4477 ± 0.0049
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88588801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 336
Semi-minor axis of confidence ellipse (meter) 220
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 83
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.31566
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 88454901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-25 07:07:40

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 88588801
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-14 10:54:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TDS.HHZ. 2021-03-25T06:52:19.93 3.0 undecidable manual Sg 11.27 0
IV.SENA.HHZ. 2021-03-25T06:52:10.91 3.0 undecidable manual Sn 6.92 0
IV.ZEN8.EHZ. 2021-03-25T06:52:06.59 3.0 undecidable manual Sg 11.12 0
IV.ACATE.EHZ. 2021-03-25T06:51:46.52 3.0 undecidable manual Pn -3.59 0
MN.TRI.HHZ. 2021-03-25T06:51:45.91 3.0 undecidable manual Sg 1.37 0
IV.MNTV.EHZ. 2021-03-25T06:51:45.72 3.0 undecidable manual Sn 0.47 0
IV.SENA.HHZ. 2021-03-25T06:51:32.99 3.0 undecidable manual Pg 12.28 0
CH.MUGIO.HHZ. 2021-03-25T06:51:31.10 3.0 undecidable manual Pn 1.71 0
IV.BOZZ.HNZ. 2021-03-25T06:51:24.73 3.0 undecidable manual Pg 13.06 0
IV.BRSN.EHZ. 2021-03-25T06:51:17.89 3.0 undecidable manual Sg 2.87 0
IV.FIR.HHZ. 2021-03-25T06:51:14.26 3.0 undecidable manual Sn -2.03 0
IV.VAGA.HHZ. 2021-03-25T06:51:12.25 3.0 undecidable manual Sn 0.71 0
IV.OPPE.HHZ. 2021-03-25T06:51:11.87 3.0 positive manual Pn 2.06 0
IV.ZEN8.EHZ. 2021-03-25T06:51:11.20 3.0 undecidable manual Pn -4.72 0
IV.FREG.EHZ. 2021-03-25T06:51:09.19 3.0 negative manual Pn -5.45 0
IV.MAGO.CHZ. 2021-03-25T06:51:04.66 3.0 positive manual Pg 7.83 0
IV.PE3.EHZ. 2021-03-25T06:50:59.52 3.0 undecidable manual Sg 0.57 0
IV.FIR.HHZ. 2021-03-25T06:50:50.99 3.0 undecidable manual Pn -2.92 0
IV.MC2.EHZ. 2021-03-25T06:50:39.83 0.6 undecidable manual S 323 35.0427 103 0.27 46
IV.MMO1.EHZ. 2021-03-25T06:50:37.79 0.3 undecidable manual S 340 28.4493 107 -0.06 72
IV.GIGS.HHN. 2021-03-25T06:50:36.87 0.6 undecidable manual S 156 25.0527 111 -0.13 48
IV.RM33.EHZ. 2021-03-25T06:50:36.92 0.6 undecidable manual S 229 25.2525 110 -0.14 49
IV.ARRO.EHZ. 2021-03-25T06:50:35.62 3.0 undecidable manual P 0.69 0
IV.TERO.HHZ. 2021-03-25T06:50:34.43 0.3 undecidable manual S 107 13.3755 132 0.12 75
IV.MC2.EHZ. 2021-03-25T06:50:34.47 0.1 undecidable manual P 323 35.0427 103 -0.03 97
IV.CAMP.HHE. 2021-03-25T06:50:34.31 0.1 undecidable manual S 193 14.0748 130 -0.14 98
IV.T1299.HNN. 2021-03-25T06:50:34.46 0.3 undecidable manual S 259 13.7751 131 0.06 74
IV.MTRA.HNZ. 2021-03-25T06:50:33.72 0.3 undecidable manual S 339 11.5773 137 -0.26 71
IV.MMO1.EHZ. 2021-03-25T06:50:33.42 0.1 undecidable manual P 340 28.4493 107 -0.09 96
IV.SMA1.EHZ. 2021-03-25T06:50:33.64 0.3 undecidable manual S 251 9.6792 143 -0.01 76
IV.RM33.EHZ. 2021-03-25T06:50:33.00 0.1 undecidable manual P 229 25.2525 110 -0.06 98
IV.GIGS.HHN. 2021-03-25T06:50:33.05 0.1 undecidable manual P 156 25.0527 111 0.03 98
IV.CAMP.HHE. 2021-03-25T06:50:31.63 0.1 undecidable manual P 193 14.0748 130 0.08 99
IV.SMA1.EHZ. 2021-03-25T06:50:31.19 0.1 negative manual P 251 9.6792 143 0.1 99
IV.T1299.HNN. 2021-03-25T06:50:31.66 0.1 undecidable manual P 259 13.7751 131 0.14 97
IV.TERO.HHZ. 2021-03-25T06:50:31.63 0.1 negative manual P 107 13.3755 132 0.16 99
IV.MTRA.HNZ. 2021-03-25T06:50:31.26 0.1 positive manual P 339 11.5773 137 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.4 0.00022349999999999998 0.24 AML other m 2021-03-25T06:50:33.81
IV.MTRA.HNN. ML:1.7 0.0004605 0.2 AML other m 2021-03-25T06:50:33.91
IV.MTRA.EHN. ML:1.7 0.000457 1.14 AML other m 2021-03-25T06:50:33.91
IV.SMA1.EHE. ML:1.5 0.0002675 1.5 AML other m 2021-03-25T06:50:34.89
IV.MTRA.HNE. ML:1.6 0.00036899999999999997 0.26 AML other m 2021-03-25T06:50:34.22
IV.MTRA.EHE. ML:1.6 0.000378 0.26 AML other m 2021-03-25T06:50:34.23
IV.TERO.HHN. ML:1.3 0.000176 0.18 AML other m 2021-03-25T06:50:34.58
IV.TERO.HHE. ML:1.3 0.00016949999999999997 0.14 AML other m 2021-03-25T06:50:34.58
IV.RM33.EHE. ML:1.0 0.00005075 0.44 AML other m 2021-03-25T06:50:37.39
IV.RM33.EHN. ML:0.9 0.000046 1.32 AML other m 2021-03-25T06:50:38.66
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