Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 21-02-2021 and time 14:27:14 (Italy) in region 4 km SW Pizzoli (AQ)

A magnitude ML 1.0 earthquake occured in region: 4 km SW Pizzoli (AQ), on

  • 21-02-2021 13:27:14 (UTC)
  • 21-02-2021 14:27:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4120, 13.2610 at 11 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
Pizzoli AQ 4 4326 4326
Scoppito AQ 5 3727 8053
Barete AQ 5 737 8790
Cagnano Amiterno AQ 6 1369 10159
Capitignano AQ 13 665 10824
Montereale AQ 13 2581 13405
L'Aquila AQ 13 69753 83158
Tornimparte AQ 14 3187 86345
Antrodoco RI 15 2588 88933
Lucoli AQ 15 1011 89944
Borbona RI 15 617 90561
Borgo Velino RI 17 972 91533
Micigliano RI 17 127 91660
Posta RI 18 694 92354
Campotosto AQ 19 542 92896
Castel Sant'Angelo RI 19 1308 94204
Fiamignano RI 20 1413 95617

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km NW of L'Aquila (69753 inhabitants)
46 Km SW of Teramo (54892 inhabitants)
53 Km E of Terni (111501 inhabitants)
63 Km NE of Tivoli (56533 inhabitants)
63 Km NE of Guidonia Montecelio (88673 inhabitants)
74 Km W of Montesilvano (53738 inhabitants)
75 Km W of Chieti (51815 inhabitants)
76 Km SE of Foligno (57155 inhabitants)
79 Km W of Pescara (121014 inhabitants)
86 Km NE of Roma (2864731 inhabitants)
90 Km NE of Velletri (53303 inhabitants)
95 Km E of Viterbo (67173 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 2021-02-21
13:27:14		 42.4125 13.2608 11 2021-02-21
14:05:46		 Sala Sismica INGV-Roma 87356021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-21 13:27:14 ± 0.06
Latitude 42.4125 ± 0.0036
Longitude 13.2608 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87356021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 408
Semi-minor axis of confidence ellipse (meter) 340
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 92
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.67989
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 87356021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-21 14:05:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
RF.GEPF.HHZ. 2021-02-21T13:29:10.61 3.0 undecidable manual Sg 7.44 0
IV.SPS2.HHZ. 2021-02-21T13:28:56.83 3.0 undecidable manual Sn -7.12 0
IV.EVRN.HHZ. 2021-02-21T13:28:44.73 3.0 undecidable manual Pg 14.01 0
IV.ACATE.EHZ. 2021-02-21T13:28:33.94 3.0 positive manual Pn -4.14 0
CH.MUGIO.HHZ. 2021-02-21T13:28:24.04 3.0 undecidable manual Pn -2.78 0
IV.ILOS.HHZ. 2021-02-21T13:28:22.03 3.0 undecidable manual Pn 1.83 0
IT.FIE.HGZ. 2021-02-21T13:28:18.02 3.0 undecidable manual Sg -0.15 0
IV.TEOL.HHZ. 2021-02-21T13:28:13.17 3.0 undecidable manual Pg 6.71 0
IV.ZCCA.HHZ. 2021-02-21T13:27:54.61 3.0 positive manual Pn -3.6 0
IV.VBKN.HHZ. 2021-02-21T13:27:49.66 3.0 positive manual Pg 1.88 0
IV.CSP1.EHZ. 2021-02-21T13:27:37.89 0.3 undecidable manual S 357 75.4689 50 0.61 59
IV.BARO.EHZ. 2021-02-21T13:27:34.05 3.0 positive manual P -0.85 0
IV.PTQR.HHZ. 2021-02-21T13:27:29.25 0.6 undecidable manual S 165 44.8218 50 0.16 46
IV.ARRO.EHE. 2021-02-21T13:27:28.79 0.3 undecidable manual S 295 44.5221 50 -0.23 69
IV.CSP1.EHZ. 2021-02-21T13:27:27.86 0.3 undecidable manual P 357 75.4689 50 0.16 66
IV.TERO.HHZ. 2021-02-21T13:27:26.33 0.3 undecidable manual S 50 36.4413 50 -0.54 65
IV.LNSS.HNZ. 2021-02-21T13:27:24.54 0.3 undecidable manual S 320 27.75 50 -0.01 74
IV.GIGS.HJZ. 2021-02-21T13:27:24.13 0.3 undecidable manual S 80 25.9518 50 0.07 73
IV.SMA1.EHZ. 2021-02-21T13:27:23.91 0.3 undecidable manual S 14 24.9528 50 0.12 73
IV.PTQR.HHZ. 2021-02-21T13:27:23.53 0.6 undecidable manual P 165 44.8218 50 0.56 42
IV.T1299.EHZ. 2021-02-21T13:27:23.50 0.3 undecidable manual S 4 24.6531 50 -0.22 71
IV.ARRO.EHE. 2021-02-21T13:27:23.15 1.0 undecidable manual P 295 44.5221 50 0.23 23
IV.CAMP.HHZ. 2021-02-21T13:27:22.07 0.3 undecidable manual S 41 18.2706 120 0.13 73
IV.FIAM.HHZ. 2021-02-21T13:27:22.16 0.3 undecidable manual S 216 19.869 118 -0.27 71
IV.FAGN.HHZ. 2021-02-21T13:27:21.46 0.6 undecidable manual P 121 31.0467 50 0.61 42
IV.TERO.HHZ. 2021-02-21T13:27:21.20 0.3 undecidable manual P 50 36.4413 50 -0.48 66
IV.LNSS.HNZ. 2021-02-21T13:27:20.28 0.1 undecidable manual P 320 27.75 50 -0.06 97
MN.AQU.HNZ. 2021-02-21T13:27:20.43 0.3 undecidable manual S 119 13.4754 128 -0.14 74
IV.T1299.EHZ. 2021-02-21T13:27:19.85 0.3 undecidable manual P 4 24.6531 50 -0.01 74
IV.GIGS.HJZ. 2021-02-21T13:27:19.84 0.1 undecidable manual P 80 25.9518 50 -0.22 95
IV.FIAM.HHZ. 2021-02-21T13:27:19.08 0.1 undecidable manual P 216 19.869 118 -0.04 99
IV.SMA1.EHZ. 2021-02-21T13:27:19.93 0.1 undecidable manual P 14 24.9528 50 0.03 99
IV.RM33.EHZ. 2021-02-21T13:27:19.97 0.3 undecidable manual S 341 11.3775 133 -0.04 75
MN.AQU.HNZ. 2021-02-21T13:27:18.19 0.3 undecidable manual P 119 13.4754 128 0.15 74
IV.CAMP.HHZ. 2021-02-21T13:27:18.85 0.1 undecidable manual P 41 18.2706 120 0.01 100
IV.RM33.EHZ. 2021-02-21T13:27:17.90 0.1 undecidable manual P 341 11.3775 133 0.18 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:1.0 0.000113469565 0.16 AML other m 2021-02-21T13:27:20.62
IV.RM33.EHN. ML:0.9 0.000090402435 0.1408 AML other m 2021-02-21T13:27:20.99
IV.FIAM.HHE. ML:0.5 0.000025 0.16 AML other m 2021-02-21T13:27:22.81
IV.FIAM.HHN. ML:0.4 0.000021113520000000002 0.16 AML other m 2021-02-21T13:27:23.38
IV.SMA1.EHE. ML:1.8 0.00032765394999999996 0.1984 AML other m 2021-02-21T13:27:24.52
IV.SMA1.EHN. ML:1.5 0.00017118470000000003 0.3648 AML other m 2021-02-21T13:27:25.29
IV.TERO.HHN. ML:0.7 0.00001855328 0.1216 AML other m 2021-02-21T13:27:27.17
IV.TERO.HHE. ML:0.7 0.0000184371315 0.16 AML other m 2021-02-21T13:27:27.18
IV.RM33.HNE. ML:1.1 0.00014045676 0.1856 AML other m 2021-02-21T13:27:20.62
IV.RM33.HNN. ML:0.9 0.000095947265 0.16 AML other m 2021-02-21T13:27:20.99
IV.CSP1.EHE. ML:1.1 0.000020711383 0.2176 AML other m 2021-02-21T13:27:40.04
IV.CSP1.EHN. ML:1.2 0.00002348819 0.2176 AML other m 2021-02-21T13:27:38.90
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