Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 11-12-2019 and time 21:37:12 (UTC) in region 4 km N Amatrice (RI)

A magnitude ML 1.0 earthquake occured in region: 4 km N Amatrice (RI), on

  • 11-12-2019 21:37:12 (UTC)
  • 11-12-2019 22:37:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6650, 13.2930 at 12 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
Amatrice RI 4 2657 2657
Accumoli RI 5 667 3324
Cittareale RI 12 482 3806
Arquata del Tronto AP 12 1178 4984
Campotosto AQ 14 542 5526
Acquasanta Terme AP 15 2916 8442
Capitignano AQ 16 665 9107
Montereale AQ 16 2581 11688
Cortino TE 18 656 12344
Valle Castellana TE 19 977 13321
Rocca Santa Maria TE 19 537 13858
Montegallo AP 20 523 14381

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km W of Teramo (54892 inhabitants)
36 Km N of L'Aquila (69753 inhabitants)
54 Km E of Terni (111501 inhabitants)
58 Km SE of Foligno (57155 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
79 Km W of Pescara (121014 inhabitants)
80 Km W of Chieti (51815 inhabitants)
87 Km NE of Guidonia Montecelio (88673 inhabitants)
88 Km NE of Tivoli (56533 inhabitants)
89 Km SE of Perugia (166134 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 1.0 2019-12-11
21:37:12		 42.6653 13.2927 13 2020-02-28
16:42:19		 Bollettino Sismico Italiano INGV 75519101
Reviewed
Rev100 		ML 1.0 2019-12-11
21:37:12		 42.6667 13.2932 12 2019-12-11
21:42:32		 Sala Sismica INGV-Roma 74561911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-11 21:37:12 ± 0.05
Latitude 42.6653 ± 0.0027
Longitude 13.2927 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 75519101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 138
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.03238
Epicentral distance of station farthest from the epicenter (degree) 0.25721
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 75519101
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-01-13 18:20:36

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 74561911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-11 21:42:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2019-12-11T21:37:21.83 0.1 undecidable manual S 6 26.0517 96 0.04 98
IV.TERO.HHZ. 2019-12-11T21:37:21.49 0.1 undecidable manual S 100 25.8519 96 -0.22 94
IV.LNSS.HHZ. 2019-12-11T21:37:20.55 0.1 undecidable manual S 251 21.7671 99 -0.09 97
IV.NRCA.HHZ. 2019-12-11T21:37:20.85 0.1 undecidable manual S 322 23.6541 98 -0.29 93
IV.RM33.EHZ. 2019-12-11T21:37:19.75 0.1 undecidable manual S 200 18.4704 103 -0.03 99
IV.CAMP.HHE. 2019-12-11T21:37:19.39 0.3 undecidable manual S 147 17.2716 106 -0.07 74
IV.MC2.EHZ. 2019-12-11T21:37:18.46 0.6 undecidable manual P 343 28.5492 95 0.29 46
IV.MTRA.EHZ. 2019-12-11T21:37:18.29 0.1 undecidable manual S 40 13.1757 117 -0.17 97
IV.NRCA.HHZ. 2019-12-11T21:37:17.40 0.1 undecidable manual P 322 23.6541 98 -0.02 98
IV.TERO.HHZ. 2019-12-11T21:37:17.74 0.1 undecidable manual P 100 25.8519 96 -0.01 98
IV.MMO1.EHZ. 2019-12-11T21:37:17.90 0.1 undecidable manual P 6 26.0517 96 0.1 97
IV.LNSS.HHZ. 2019-12-11T21:37:17.17 0.1 undecidable manual P 251 21.7671 99 0.04 99
IV.MTRA.EHZ. 2019-12-11T21:37:16.01 0.1 positive manual P 40 13.1757 117 0.14 98
IV.T1299.HNN. 2019-12-11T21:37:16.63 0.3 undecidable manual S 194 3.5964 160 -0.1 75
IV.RM33.EHZ. 2019-12-11T21:37:16.71 0.1 undecidable manual P 200 18.4704 103 0.07 99
IV.SMA1.EHZ. 2019-12-11T21:37:16.81 0.1 undecidable manual S 138 5.1948 151 -0.1 100
IV.CAMP.HHE. 2019-12-11T21:37:16.57 0.1 undecidable manual P 147 17.2716 106 0.12 98
IV.SMA1.EHZ. 2019-12-11T21:37:15.20 0.1 undecidable manual P 138 5.1948 151 0.22 98
IV.T1299.HNN. 2019-12-11T21:37:15.08 0.1 undecidable manual P 194 3.5964 160 0.2 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.2 0.00019931295 1.8976 AML other m 2019-12-11T21:37:17.99
IV.SMA1.EHN. ML:1.3 0.00029689889999999996 0.128 AML other m 2019-12-11T21:37:17.06
IV.MTRA.EHN. ML:1.3 0.00018367954999999999 0.2432 AML other m 2019-12-11T21:37:18.71
IV.MTRA.HNN. ML:1.2 0.0001589095 0.2048 AML other m 2019-12-11T21:37:18.60
IV.MTRA.HNE. ML:1.1 0.000122287689 0.2688 AML other m 2019-12-11T21:37:19.24
IV.MTRA.EHE. ML:1.2 0.0001664824 0.2304 AML other m 2019-12-11T21:37:19.24
IV.RM33.EHN. ML:0.5 0.00002584647 0.1408 AML other m 2019-12-11T21:37:20.35
IV.RM33.EHE. ML:0.7 0.000036025435000000005 0.1536 AML other m 2019-12-11T21:37:20.44
IV.LNSS.HHN. ML:0.7 0.00003349174 0.1408 AML other m 2019-12-11T21:37:20.67
IV.LNSS.HHE. ML:0.9 0.00005013238000000001 0.128 AML other m 2019-12-11T21:37:20.78
IV.NRCA.HHN. ML:1.0 0.00006678648000000001 0.1408 AML other m 2019-12-11T21:37:21.47
IV.NRCA.HHE. ML:1.0 0.000058251684999999996 0.0896 AML other m 2019-12-11T21:37:21.41
IV.TERO.HHN. ML:0.8 0.00003483128 0.0768 AML other m 2019-12-11T21:37:22.66
IV.TERO.HHE. ML:0.7 0.000028459064999999998 0.2176 AML other m 2019-12-11T21:37:22.73
IV.RM33.HNN. ML:1.2 0.000116486985 0.7808 AML other m 2019-12-11T21:37:23.54
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