Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 19-02-2021 and time 23:44:14 (Italy) in region 3 km SE Pietralunga (PG)

A magnitude ML 1.7 earthquake occured in region: 3 km SE Pietralunga (PG), on

  • 19-02-2021 22:44:14 (UTC)
  • 19-02-2021 23:44:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4180, 12.4500 at 9 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
Pietralunga PG 3 2111 2111
Montone PG 12 1680 3791
Gubbio PG 13 32216 36007
Cantiano PU 16 2245 38252
Apecchio PU 16 1882 40134
Umbertide PG 16 16681 56815
Città di Castello PG 18 39913 96728
Scheggia e Pascelupo PG 18 1393 98121
Piobbico PU 20 2029 100150

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Perugia (166134 inhabitants)
46 Km E of Arezzo (99543 inhabitants)
55 Km NW of Foligno (57155 inhabitants)
66 Km SW of Fano (60888 inhabitants)
66 Km SW of Pesaro (94582 inhabitants)
72 Km S of Rimini (147750 inhabitants)
82 Km S of Cesena (96758 inhabitants)
89 Km W of Ancona (100861 inhabitants)
91 Km E of Siena (53903 inhabitants)
95 Km SE of Forlì (117913 inhabitants)
97 Km N of Terni (111501 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 1.7 2021-02-19
22:44:14		 43.4185 12.45 9 2021-07-12
16:55:11		 Bollettino Sismico Italiano INGV 90190151
Reviewed
Rev100 		ML 1.6 2021-02-19
22:44:15		 43.4208 12.4527 7 2021-02-19
22:48:58		 Sala Sismica INGV-Roma 87307111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-19 22:44:14 ± 0.05
Latitude 43.4185 ± 0.0018
Longitude 12.4500 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90190151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 220
Semi-minor axis of confidence ellipse (meter) 88
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 166
Circular confidence region, given by single value of horizontal uncertainty (meter) 220.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 35
Number of associated phases, regardless of their use for origin computation 55
Number of defining phases 53
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.60075
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 31
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 87307111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-19 22:48:58

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 90190151
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-17 08:18:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2021-02-19T22:44:44.73 3.0 undecidable manual S 0.41 0
IV.MGAB.HHZ. 2021-02-19T22:44:26.58 3.0 positive manual P -0.18 0
IV.PARC.HHZ. 2021-02-19T22:44:26.52 0.6 undecidable manual S 326 30.6471 106 0.51 44
IV.FDMO.HHZ. 2021-02-19T22:44:26.79 0.3 undecidable manual P 129 66.6777 50 -0.17 66
IV.FOSV.EHZ. 2021-02-19T22:44:25.81 0.6 undecidable manual S 119 28.6491 107 0.49 44
IV.ATCC.EHZ. 2021-02-19T22:44:25.72 0.3 undecidable manual S 149 30.0477 106 -0.1 71
IV.FRON.EHZ. 2021-02-19T22:44:24.17 0.6 undecidable manual S 64 24.753 109 0.11 48
IV.EL6.EHZ. 2021-02-19T22:44:24.81 0.3 undecidable manual P 100 53.502 50 -0.11 68
IV.SSFR.HHZ. 2021-02-19T22:44:24.74 0.3 undecidable manual S 86 26.8509 108 0 73
IV.ASSB.HHZ. 2021-02-19T22:44:23.60 0.1 undecidable manual P 158 45.0216 50 -0.01 94
IV.ATVA.EHZ. 2021-02-19T22:44:23.11 0.3 undecidable manual S 221 20.4684 113 0.46 67
IV.NARO.HHZ. 2021-02-19T22:44:23.68 0.6 undecidable manual S 26 23.754 110 -0.06 49
IV.CRE.HHZ. 2021-02-19T22:44:23.56 0.6 undecidable manual P 299 45.8208 50 -0.18 46
IV.ATMC.EHZ. 2021-02-19T22:44:23.06 0.3 undecidable manual S 279 20.9679 112 0.24 71
IV.BADI.EHZ. 2021-02-19T22:44:22.45 0.3 undecidable manual S 301 19.3695 114 0.13 72
IV.ARVD.HHZ. 2021-02-19T22:44:22.76 0.3 undecidable manual P 77 40.5261 50 -0.17 69
IV.ATSC.EHZ. 2021-02-19T22:44:22.61 0.3 undecidable manual S 88 19.0698 114 0.39 68
IV.CAFI.HHZ. 2021-02-19T22:44:22.81 0.6 undecidable manual P 256 40.2264 50 -0.07 47
IV.MURB.HHZ. 2021-02-19T22:44:22.16 0.3 undecidable manual S 161 18.2706 115 0.19 72
IV.ATCC.EHZ. 2021-02-19T22:44:21.33 0.1 positive manual P 149 30.0477 106 0.1 95
IV.PIEI.HHZ. 2021-02-19T22:44:21.33 0.6 undecidable manual S 28 14.6742 121 0.46 45
IV.SSP9.EHZ. 2021-02-19T22:44:21.22 0.6 undecidable manual P 304 30.8469 106 -0.16 47
IV.APEC.HHZ. 2021-02-19T22:44:21.45 0.6 undecidable manual S 351 15.6732 119 0.27 47
IV.MPAG.EHZ. 2021-02-19T22:44:21.65 0.1 undecidable manual P 47 34.1436 50 -0.3 91
IV.ATMI.HHZ. 2021-02-19T22:44:21.71 0.6 undecidable manual S 238 17.3715 116 0.01 50
IV.PARC.HHZ. 2021-02-19T22:44:21.16 1.0 negative manual P 326 30.6471 106 -0.18 23
IV.PE3.EHZ. 2021-02-19T22:44:21.63 0.3 negative manual P 7 31.0467 106 0.23 69
IV.FRON.EHZ. 2021-02-19T22:44:20.09 0.1 positive manual P 64 24.753 109 -0.12 96
IV.SSFR.HHZ. 2021-02-19T22:44:20.42 0.1 undecidable manual P 86 26.8509 108 -0.18 94
IV.FOSV.EHZ. 2021-02-19T22:44:20.75 0.3 undecidable manual P 119 28.6491 107 -0.19 70
IV.ATLO.EHZ. 2021-02-19T22:44:20.44 0.3 undecidable manual S 197 11.9769 126 0.36 70
IV.ATMI.HHZ. 2021-02-19T22:44:19.05 1.0 undecidable manual P 238 17.3715 116 0.2 24
IV.ATSC.EHZ. 2021-02-19T22:44:19.21 0.3 undecidable manual P 88 19.0698 114 0.06 73
IV.ATBU.HNZ. 2021-02-19T22:44:19.72 0.3 undecidable manual S 51 10.1787 130 0.14 73
IV.MURB.HHZ. 2021-02-19T22:44:19.21 0.1 undecidable manual P 161 18.2706 115 0.21 95
IV.BADI.EHZ. 2021-02-19T22:44:19.28 0.6 undecidable manual P 301 19.3695 114 0.07 49
IV.ATVA.EHZ. 2021-02-19T22:44:19.80 0.3 undecidable manual P 221 20.4684 113 0.4 68
IV.NARO.HHZ. 2021-02-19T22:44:19.83 0.1 positive manual P 26 23.754 110 -0.2 94
IV.ATMC.EHZ. 2021-02-19T22:44:19.55 0.3 undecidable manual P 279 20.9679 112 0.05 73
IV.ATFO.HHZ. 2021-02-19T22:44:19.85 0.6 undecidable manual S 120 11.3775 127 -0.06 50
IV.ATPC.HHZ. 2021-02-19T22:44:18.88 0.3 undecidable manual S 5 6.8931 141 0.08 75
IV.ATLO.EHZ. 2021-02-19T22:44:18.01 0.3 undecidable manual P 197 11.9769 126 0.09 74
IV.PIEI.HHZ. 2021-02-19T22:44:18.50 0.1 positive manual P 28 14.6742 121 0.13 97
IV.TB02.DHZ.01 2021-02-19T22:44:18.48 0.3 undecidable manual S 212 6.2937 144 -0.18 73
IV.APEC.HHZ. 2021-02-19T22:44:18.60 0.1 undecidable manual P 351 15.6732 119 0.05 99
IV.TB03.DHZ.01 2021-02-19T22:44:17.73 0.3 undecidable manual S 239 3.6963 157 -0.5 69
IV.TB02.DHZ.01 2021-02-19T22:44:17.05 0.3 undecidable manual P 212 6.2937 144 -0.05 75
IV.ATFO.HHZ. 2021-02-19T22:44:17.79 0.1 positive manual P 120 11.3775 127 -0.03 100
IV.ATPC.HHZ. 2021-02-19T22:44:17.12 0.1 undecidable manual P 5 6.8931 141 -0.06 100
IV.TB01.DHZ.01 2021-02-19T22:44:17.80 0.3 undecidable manual S 196 4.2957 154 -0.5 68
IV.ATBU.HNZ. 2021-02-19T22:44:17.81 0.3 undecidable manual P 51 10.1787 130 0.19 73
IV.ATPI.EHZ. 2021-02-19T22:44:17.88 0.6 undecidable manual S 313 5.2947 149 -0.58 44
IV.ATPI.EHZ. 2021-02-19T22:44:16.81 0.1 undecidable manual P 313 5.2947 149 -0.17 98
IV.TB03.DHZ.01 2021-02-19T22:44:16.51 0.1 undecidable manual P 239 3.6963 157 -0.33 95
IV.TB01.DHZ.01 2021-02-19T22:44:16.71 0.3 undecidable manual P 196 4.2957 154 -0.18 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.HNN. ML:1.9 0.001635 1.32 AML other m 2021-02-19T22:44:19.20
IV.ATPI.EHN. ML:1.9 0.001605 1.32 AML other m 2021-02-19T22:44:19.20
IV.ATPI.EHE. ML:1.9 0.001585 0.44 AML other m 2021-02-19T22:44:19.94
IV.ATPI.HNE. ML:1.9 0.0016 0.44 AML other m 2021-02-19T22:44:19.94
IV.ATFO.HHE. ML:1.8 0.000857 0.42 AML other m 2021-02-19T22:44:20.29
IV.ATFO.HHN. ML:1.8 0.0007495000000000001 1.16 AML other m 2021-02-19T22:44:20.86
IV.PIEI.HHN. ML:1.6 0.000377 0.56 AML other m 2021-02-19T22:44:22.16
IV.PIEI.HHE. ML:1.6 0.000416 0.36 AML other m 2021-02-19T22:44:22.44
IV.BADI.EHE. ML:1.6 0.00032599999999999996 0.58 AML other m 2021-02-19T22:44:24.61
IV.BADI.EHN. ML:1.8 0.00047450000000000004 0.44 AML other m 2021-02-19T22:44:24.93
IV.ATMI.HHE. ML:1.6 0.00033650000000000005 0.78 AML other m 2021-02-19T22:44:24.79
IV.SSFR.HHN. ML:1.7 0.00026249999999999993 1.08 AML other m 2021-02-19T22:44:25.06
IV.SSFR.HNN. ML:1.8 0.00038950000000000003 1.1 AML other m 2021-02-19T22:44:25.06
IV.APEC.HHE. ML:1.6 0.0003745 1.66 AML other m 2021-02-19T22:44:25.88
IV.APEC.HHN. ML:1.6 0.0003375 1.3 AML other m 2021-02-19T22:44:26.82
IV.SSFR.HHE. ML:1.7 0.000261 0.4 AML other m 2021-02-19T22:44:26.18
IV.SSFR.HNE. ML:1.7 0.00027449999999999995 0.58 AML other m 2021-02-19T22:44:26.39
IV.ATCC.EHN. ML:1.8 0.0003005 0.26 AML other m 2021-02-19T22:44:26.91
IV.ATCC.EHE. ML:1.8 0.00033650000000000005 0.28 AML other m 2021-02-19T22:44:26.72
IV.FRON.EHN. ML:1.4 0.0001725 0.48 AML other m 2021-02-19T22:44:26.72
IV.ATMI.HHN. ML:1.6 0.00035499999999999996 0.96 AML other m 2021-02-19T22:44:27.75
IV.PE3.EHN. ML:1.9 0.000365 1.56 AML other m 2021-02-19T22:44:29.82
IV.PE3.EHE. ML:1.9 0.0003805 1.54 AML other m 2021-02-19T22:44:29.99
IV.FRON.EHE. ML:1.2 0.000106 0.92 AML other m 2021-02-19T22:44:30.50
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