Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 19-02-2021 and time 21:15:44 (UTC) in region 7 km N Cittareale (RI)

A magnitude ML 1.6 earthquake occured in region: 7 km N Cittareale (RI), on

  • 19-02-2021 21:15:44 (UTC)
  • 19-02-2021 22:15:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6820, 13.1480 at 14 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
Cittareale RI 7 482 482
Accumoli RI 8 667 1149
Cascia PG 12 3217 4366
Amatrice RI 13 2657 7023
Norcia PG 13 4957 11980
Arquata del Tronto AP 16 1178 13158
Monteleone di Spoleto PG 16 599 13757
Poggiodomo PG 18 117 13874
Posta RI 18 694 14568
Borbona RI 19 617 15185
Montereale AQ 19 2581 17766
Leonessa RI 20 2435 20201

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km NW of L'Aquila (69753 inhabitants)
43 Km E of Terni (111501 inhabitants)
46 Km W of Teramo (54892 inhabitants)
47 Km SE of Foligno (57155 inhabitants)
78 Km SE of Perugia (166134 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
85 Km NE of Tivoli (56533 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
91 Km W of Pescara (121014 inhabitants)
91 Km W of Chieti (51815 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 1.6 2021-02-19
21:15:44		 42.6817 13.1475 14 2021-07-12
16:55:10		 Bollettino Sismico Italiano INGV 89819921
Reviewed
Rev100 		ML 1.6 2021-02-19
21:15:44		 42.6938 13.1432 12 2021-02-19
21:19:51		 Sala Sismica INGV-Roma 87306361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-19 21:15:44 ± 0.05
Latitude 42.6817 ± 0.0027
Longitude 13.1475 ± 0.0037
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89819921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 270
Semi-minor axis of confidence ellipse (meter) 52
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 242
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 42
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.10972
Epicentral distance of station farthest from the epicenter (degree) 0.62503
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 89819921
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-06 05:19:21

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 87306361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-19 21:19:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESX.HHZ. 2021-02-19T21:16:00.00 0.6 undecidable manual S 260 46.5201 95 0.14 46
IV.MF5.EHZ. 2021-02-19T21:15:59.11 0.3 undecidable manual S 37 42.4242 96 0.34 66
IV.FIAM.HHZ. 2021-02-19T21:15:59.93 0.6 undecidable manual S 183 45.9207 95 0.21 46
IV.CSP1.EHZ. 2021-02-19T21:15:59.88 0.3 undecidable manual S 6 45.7209 95 0.22 67
IV.CESI.HHZ. 2021-02-19T21:15:58.47 0.3 undecidable manual S 331 40.9257 96 0.09 70
IV.TERO.HHZ. 2021-02-19T21:15:57.20 0.3 undecidable manual S 100 37.8288 97 -0.35 66
IV.FDMO.HHZ. 2021-02-19T21:15:57.94 0.3 undecidable manual S 353 39.627 96 -0.11 71
IV.ATCC.EHZ. 2021-02-19T21:15:57.26 0.6 undecidable manual P 324 69.375 93 0.17 44
IV.ARRO.EHZ. 2021-02-19T21:15:56.29 0.3 undecidable manual S 250 33.1446 98 -0.04 71
IV.MNTT.EHZ. 2021-02-19T21:15:55.34 0.1 undecidable manual P 41 55.6998 94 0.36 86
IV.ASSB.HHZ. 2021-02-19T21:15:55.40 0.6 undecidable manual P 315 56.3991 94 0.31 44
IV.MOMA.HHZ. 2021-02-19T21:15:54.20 0.6 undecidable manual P 286 48.9177 95 0.26 45
IV.MC2.EHZ. 2021-02-19T21:15:54.23 0.6 undecidable manual S 8 25.6521 102 -0.14 48
IV.CAMP.HHZ. 2021-02-19T21:15:54.50 0.1 undecidable manual S 127 26.751 101 -0.15 94
IV.MMO1.EHZ. 2021-02-19T21:15:54.92 0.3 undecidable manual S 31 28.2495 101 -0.1 72
IV.GUMA.HHZ. 2021-02-19T21:15:53.70 0.6 undecidable manual P 20 44.9217 95 0.38 44
IV.MTRA.EHZ. 2021-02-19T21:15:53.04 0.1 undecidable manual S 68 21.9669 106 -0.35 92
IV.MF5.EHZ. 2021-02-19T21:15:53.34 0.6 undecidable manual P 37 42.4242 96 0.41 44
IV.FIAM.HHZ. 2021-02-19T21:15:53.39 0.6 undecidable manual P 183 45.9207 95 -0.09 46
IV.CESX.HHZ. 2021-02-19T21:15:53.46 0.6 undecidable manual P 260 46.5201 95 -0.1 46
IV.CSP1.EHZ. 2021-02-19T21:15:53.48 0.3 undecidable manual P 6 45.7209 95 0.03 71
IV.RM33.EHZ. 2021-02-19T21:15:52.91 0.6 undecidable manual S 164 19.9689 109 0.03 49
IV.CESI.HHZ. 2021-02-19T21:15:52.55 0.6 undecidable manual P 331 40.9257 96 -0.16 46
IV.SMA1.EHZ. 2021-02-19T21:15:52.35 0.1 undecidable manual S 110 16.3725 116 0.36 93
IV.TERO.HHZ. 2021-02-19T21:15:52.03 0.3 undecidable manual P 100 37.8288 97 -0.2 69
IV.GAVE.EHZ. 2021-02-19T21:15:52.72 0.1 undecidable manual S 273 20.6682 108 -0.35 91
IV.FDMO.HHZ. 2021-02-19T21:15:52.42 0.6 undecidable manual P 353 39.627 96 -0.09 47
IV.LNSS.HHZ. 2021-02-19T21:15:51.03 0.1 undecidable manual S 225 12.3765 127 -0.06 98
IV.NRCA.HNZ. 2021-02-19T21:15:51.60 0.3 undecidable manual S 351 17.0718 115 -0.56 67
IV.ARRO.EHZ. 2021-02-19T21:15:51.46 0.3 undecidable manual P 250 33.1446 98 -0.06 71
IV.MMO1.EHZ. 2021-02-19T21:15:50.72 0.3 undecidable manual P 31 28.2495 101 -0.05 73
IV.T1299.HNZ. 2021-02-19T21:15:50.98 0.3 undecidable manual S 116 12.1767 128 -0.08 74
IV.MC2.EHZ. 2021-02-19T21:15:50.38 0.3 undecidable manual P 8 25.6521 102 -0.01 74
IV.CAMP.HHZ. 2021-02-19T21:15:50.52 0.1 undecidable manual P 127 26.751 101 -0.03 96
IV.GAVE.EHZ. 2021-02-19T21:15:49.60 0.1 undecidable manual P 273 20.6682 108 -0.04 97
IV.RM33.EHZ. 2021-02-19T21:15:49.62 0.1 positive manual P 164 19.9689 109 0.09 99
IV.NRCA.HNZ. 2021-02-19T21:15:49.01 0.1 positive manual P 351 17.0718 115 -0.11 98
IV.MTRA.EHZ. 2021-02-19T21:15:49.77 0.1 undecidable manual P 68 21.9669 106 -0.05 97
IV.SMA1.EHZ. 2021-02-19T21:15:49.20 0.1 undecidable manual P 110 16.3725 116 0.18 97
IV.LNSS.HHZ. 2021-02-19T21:15:48.53 0.1 undecidable manual P 225 12.3765 127 0.03 100
IV.T1299.HNZ. 2021-02-19T21:15:48.58 0.3 undecidable manual P 116 12.1767 128 0.1 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:2.1 0.0010609999999999999 1.02 AML other m 2021-02-19T21:15:51.41
IV.LNSS.HHN. ML:1.8 0.0005965 0.18 AML other m 2021-02-19T21:15:51.43
IV.SMA1.EHE. ML:1.9 0.0006730000000000001 0.36 AML other m 2021-02-19T21:15:52.60
IV.SMA1.EHN. ML:1.9 0.0006445000000000001 0.34 AML other m 2021-02-19T21:15:52.64
IV.GAVE.EHE. ML:1.9 0.0005685 0.2 AML other m 2021-02-19T21:15:53.14
IV.GAVE.EHN. ML:2.0 0.0006255000000000001 0.18 AML other m 2021-02-19T21:15:53.17
IV.MTRA.EHN. ML:1.8 0.000348 0.98 AML other m 2021-02-19T21:15:53.81
IV.MTRA.EHE. ML:1.9 0.0005344999999999999 1.02 AML other m 2021-02-19T21:15:53.95
IV.RM33.EHN. ML:1.6 0.000261 0.08 AML other m 2021-02-19T21:15:53.49
IV.RM33.EHE. ML:1.5 0.0002065 0.36 AML other m 2021-02-19T21:15:55.64
IV.ARRO.EHN. ML:1.6 0.0001515 0.18 AML other m 2021-02-19T21:15:57.98
IV.TERO.HHN. ML:1.5 0.0001097 0.58 AML other m 2021-02-19T21:15:58.15
IV.FDMO.HHE. ML:1.4 0.0000837 0.26 AML other m 2021-02-19T21:15:58.28
IV.FDMO.HHN. ML:1.4 0.0000849 0.42 AML other m 2021-02-19T21:15:58.24
IV.TERO.HHE. ML:1.4 0.00010085 0.12 AML other m 2021-02-19T21:15:58.53
IV.ARRO.EHE. ML:1.4 0.0001033 0.18 AML other m 2021-02-19T21:15:58.58
IV.CESI.HHN. ML:1.5 0.0000997 1.66 AML other m 2021-02-19T21:15:59.96
IV.CESI.HHE. ML:1.2 0.000048 1.52 AML other m 2021-02-19T21:16:00.90
IV.MF5.EHN. ML:1.6 0.00011585000000000001 0.46 AML other m 2021-02-19T21:16:00.63
IV.CESX.HHN. ML:1.3 0.0000547 0.44 AML other m 2021-02-19T21:16:01.50
IV.MF5.EHE. ML:1.5 0.0001021 0.78 AML other m 2021-02-19T21:16:01.87
IV.MOMA.HHE. ML:1.9 0.000203 0.16 AML other m 2021-02-19T21:16:02.53
IV.MOMA.HHN. ML:1.8 0.000183 0.88 AML other m 2021-02-19T21:16:03.52
IV.CESX.HHE. ML:1.2 0.00004805 0.66 AML other m 2021-02-19T21:16:03.02
IV.ASSB.HHE. ML:1.4 0.0000487 0.2 AML other m 2021-02-19T21:16:04.84
IV.ASSB.HHN. ML:1.4 0.0000582 1.52 AML other m 2021-02-19T21:16:05.09
IV.MNTT.EHE. ML:2.0 0.000243 0.18 AML other m 2021-02-19T21:16:07.96
IV.MNTT.EHN. ML:1.8 0.0001525 0.86 AML other m 2021-02-19T21:16:08.52
IV.ATCC.EHE. ML:1.3 0.000028749999999999997 0.66 AML other m 2021-02-19T21:16:09.64
IV.ATCC.EHN. ML:1.3 0.00002785 0.64 AML other m 2021-02-19T21:16:10.73
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