Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 23-04-2020 and time 05:41:19 (UTC) in region 7 km W Montemonaco (AP)

A magnitude ML 1.4 earthquake occured in region: 7 km W Montemonaco (AP), on

  • 23-04-2020 05:41:19 (UTC)
  • 23-04-2020 07:41:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8780, 13.2450 at 8 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
Montemonaco AP 7 604 604
Castelsantangelo sul Nera MC 8 281 885
Montegallo AP 8 523 1408
Montefortino FM 11 1178 2586
Ussita MC 11 444 3030
Arquata del Tronto AP 12 1178 4208
Bolognola MC 13 142 4350
Visso MC 14 1107 5457
Amandola FM 15 3629 9086
Norcia PG 16 4957 14043
Comunanza AP 16 3166 17209
Preci PG 17 724 17933
Palmiano AP 18 196 18129
Acquacanina MC 18 121 18250
Acquasanta Terme AP 18 2916 21166
Sarnano MC 18 3264 24430
Roccafluvione AP 19 2010 26440
Fiastra MC 19 559 26999

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NW of Teramo (54892 inhabitants)
45 Km E of Foligno (57155 inhabitants)
60 Km N of L'Aquila (69753 inhabitants)
60 Km NE of Terni (111501 inhabitants)
74 Km E of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
85 Km S of Ancona (100861 inhabitants)
92 Km NW of Pescara (121014 inhabitants)
96 Km NW 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
Reviewed
Rev100 		ML 1.4 2020-04-23
05:41:19		 42.8783 13.2453 8 2020-04-23
05:50:28		 Sala Sismica INGV-Roma 78492991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-23 05:41:19 ± 0.08
Latitude 42.8783 ± 0.0036
Longitude 13.2453 ± 0.0049
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78492991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 438
Semi-minor axis of confidence ellipse (meter) 155
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 237
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.36692
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 78492991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-23 05:50:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2020-04-23T05:42:10.46 3.0 undecidable manual Sg 2.47 0
IV.PAOL.HHZ. 2020-04-23T05:41:54.00 3.0 undecidable manual Pn -0.17 0
IV.ROSPO.HHZ. 2020-04-23T05:41:46.03 3.0 undecidable manual P 1.33 0
IV.TERO.HHZ. 2020-04-23T05:41:33.28 0.3 undecidable manual S 134 40.7259 50 0 71
IV.VCEL.EHZ. 2020-04-23T05:41:31.61 3.0 undecidable manual P -0.99 0
IV.CESI.HHZ. 2020-04-23T05:41:30.44 0.6 undecidable manual S 297 31.0467 105 -0.05 48
IV.MOMA.HHZ. 2020-04-23T05:41:29.94 3.0 positive manual P 0.23 0
IV.SMA1.EHZ. 2020-04-23T05:41:29.54 0.3 undecidable manual S 165 28.4493 106 -0.1 71
IV.GIGS.HHZ. 2020-04-23T05:41:29.30 3.0 positive manual P -0.24 0
IV.EL6.EHZ. 2020-04-23T05:41:28.81 3.0 positive manual P -0.2 0
IV.SNTG.HHZ. 2020-04-23T05:41:28.34 3.0 undecidable manual P -0.19 0
IV.GUMA.HHZ. 2020-04-23T05:41:27.80 0.3 undecidable manual S 20 21.6672 111 0.39 68
IV.MF5.EHZ. 2020-04-23T05:41:27.17 0.6 undecidable manual S 55 21.2676 111 -0.09 48
IV.TERO.HHZ. 2020-04-23T05:41:27.10 0.3 undecidable manual P 134 40.7259 50 -0.29 67
IV.RM33.EHZ. 2020-04-23T05:41:27.62 3.0 positive manual P 0.31 0
IV.FDMO.HHZ. 2020-04-23T05:41:27.20 0.3 undecidable manual S 324 21.7671 111 -0.22 70
IV.MNTT.EHZ. 2020-04-23T05:41:27.11 0.3 undecidable manual P 54 34.9428 50 0.6 62
IV.LNSS.HHZ. 2020-04-23T05:41:26.33 0.3 undecidable manual P 209 34.8429 50 -0.16 70
IV.MTRA.EHZ. 2020-04-23T05:41:26.48 0.3 undecidable manual S 138 18.2706 114 0.17 71
IV.CESI.HHZ. 2020-04-23T05:41:25.55 0.1 positive manual P 297 31.0467 105 -0.23 92
IV.SMA1.EHZ. 2020-04-23T05:41:25.18 0.6 positive manual P 165 28.4493 106 -0.11 47
IV.NRCA.HNZ. 2020-04-23T05:41:24.62 0.3 undecidable manual S 245 11.7771 125 0.27 71
IV.GUMA.HHZ. 2020-04-23T05:41:24.26 0.1 negative manual P 20 21.6672 111 0.26 93
IV.MTRA.EHZ. 2020-04-23T05:41:23.50 0.1 undecidable manual P 138 18.2706 114 0.13 96
IV.FDMO.HHZ. 2020-04-23T05:41:23.87 0.3 undecidable manual P 324 21.7671 111 -0.14 71
IV.MF5.EHZ. 2020-04-23T05:41:23.29 0.3 undecidable manual P 55 21.2676 111 -0.62 63
IV.NRCA.HNZ. 2020-04-23T05:41:22.46 0.1 undecidable manual P 245 11.7771 125 0.23 95
IV.MMO1.EHZ. 2020-04-23T05:41:22.84 0.3 undecidable manual S 71 6.993 140 -0.28 71
IV.MMO1.EHZ. 2020-04-23T05:41:21.55 0.1 undecidable manual P 71 6.993 140 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.0 0.0012320344999999999 0.1184 AML other m 2020-04-23T05:41:25.26
IV.NRCA.HHN. ML:1.9 0.0009803073 0.0992 AML other m 2020-04-23T05:41:24.84
IV.NRCA.HNE. ML:2.0 0.00122550035 0.128 AML other m 2020-04-23T05:41:25.27
IV.NRCA.HNN. ML:1.8 0.0008544107000000001 0.0992 AML other m 2020-04-23T05:41:24.85
IV.MF5.EHE. ML:1.1 0.00009706023000000001 0.24 AML other m 2020-04-23T05:41:27.53
IV.MF5.EHN. ML:1.1 0.00009736631499999999 0.3008 AML other m 2020-04-23T05:41:27.80
IV.MTRA.EHE. ML:1.3 0.0001640859 0.1792 AML other m 2020-04-23T05:41:27.42
IV.MTRA.EHN. ML:1.4 0.0002092376 0.1984 AML other m 2020-04-23T05:41:27.99
IV.MTRA.HNE. ML:1.3 0.000160012225 0.1792 AML other m 2020-04-23T05:41:27.42
IV.MTRA.HNN. ML:1.4 0.00020874429999999999 0.2016 AML other m 2020-04-23T05:41:28.09
IV.FDMO.HHE. ML:1.5 0.0002324804 0.24 AML other m 2020-04-23T05:41:27.54
IV.FDMO.HHN. ML:1.6 0.00026912975 0.1408 AML other m 2020-04-23T05:41:27.50
IV.GUMA.HNN. ML:1.4 0.0001845972 0.48 AML other m 2020-04-23T05:41:28.53
IV.GUMA.HHE. ML:1.4 0.00018377935 0.3808 AML other m 2020-04-23T05:41:27.88
IV.GUMA.HHN. ML:1.2 0.00011429969 0.2176 AML other m 2020-04-23T05:41:29.63
IV.SMA1.EHE. ML:1.0 0.000050288805 0.1824 AML other m 2020-04-23T05:41:30.02
IV.SMA1.EHN. ML:1.0 0.000048148055000000004 0.3008 AML other m 2020-04-23T05:41:30.49
IV.CESI.HNE. ML:1.4 0.00012852019 0.208 AML other m 2020-04-23T05:41:30.67
IV.CESI.HNN. ML:1.6 0.00019085661999999998 0.1888 AML other m 2020-04-23T05:41:30.64
IV.CESI.HHE. ML:1.4 0.000103331695 0.2176 AML other m 2020-04-23T05:41:30.66
IV.CESI.HHN. ML:1.6 0.00020344805 0.1792 AML other m 2020-04-23T05:41:30.54
IV.LNSS.HHE. ML:1.3 0.00007672770499999999 0.2624 AML other m 2020-04-23T05:41:32.19
IV.LNSS.HHN. ML:1.4 0.000101237255 0.3584 AML other m 2020-04-23T05:41:32.09
IV.TERO.HHE. ML:1.3 0.00007203894999999999 0.1408 AML other m 2020-04-23T05:41:33.43
IV.TERO.HHN. ML:1.2 0.000050281145 0.1376 AML other m 2020-04-23T05:41:33.31
IV.TERO.HNE. ML:1.5 0.00010072580000000001 0.528 AML other m 2020-04-23T05:41:39.14
IV.MNTT.EHE. ML:1.7 0.00021291985000000002 0.3392 AML other m 2020-04-23T05:41:33.60
IV.MNTT.EHN. ML:1.7 0.00019065840000000002 0.3584 AML other m 2020-04-23T05:41:33.58
IV.RM33.HNE. ML:1.8 0.00020122792 0.7072 AML other m 2020-04-23T05:41:46.48
IV.RM33.HNN. ML:1.6 0.00012765015 0.9312 AML other m 2020-04-23T05:41:42.95
IV.RM33.EHE. ML:0.9 0.000023291985000000002 0.1184 AML other m 2020-04-23T05:41:34.15
IV.RM33.EHN. ML:0.9 0.000025662515 0.1216 AML other m 2020-04-23T05:41:36.49
IV.SNTG.HHE. ML:0.9 0.000018690105 0.0992 AML other m 2020-04-23T05:41:36.04
IV.SNTG.HHN. ML:0.9 0.000019870974999999998 0.2208 AML other m 2020-04-23T05:41:39.30
IV.SNTG.HNE. ML:1.7 0.0001483562 1.04 AML other m 2020-04-23T05:41:46.23
IV.SNTG.HNN. ML:1.9 0.00020580080000000002 1.008 AML other m 2020-04-23T05:41:35.04
IV.EL6.EHE. ML:1.1 0.00003560935 0.16 AML other m 2020-04-23T05:41:38.52
IV.GIGS.HHE. ML:0.9 0.000019084485 0.16 AML other m 2020-04-23T05:41:37.25
IV.GIGS.HHN. ML:1.2 0.000032837715 0.0992 AML other m 2020-04-23T05:41:37.36
IV.MOMA.HNE. ML:1.6 0.000099464355 0.5792 AML other m 2020-04-23T05:41:39.89
IV.MOMA.HHE. ML:1.0 0.000023457294 0.16 AML other m 2020-04-23T05:41:39.07
IV.MOMA.HHN. ML:0.9 0.000020407925 0.2176 AML other m 2020-04-23T05:41:41.31
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