Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 26-11-2021 and time 09:36:44 (Italy) in region 4 km W Montemonaco (AP)

A magnitude ML 1.9 earthquake occured in region: 4 km W Montemonaco (AP), on

  • 26-11-2021 08:36:44 (UTC)
  • 26-11-2021 09:36:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8920, 13.2820 at 25 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
Montemonaco AP 4 604 604
Montegallo AP 7 523 1127
Montefortino FM 8 1178 2305
Castelsantangelo sul Nera MC 10 281 2586
Amandola FM 12 3629 6215
Bolognola MC 12 142 6357
Ussita MC 13 444 6801
Comunanza AP 13 3166 9967
Arquata del Tronto AP 13 1178 11145
Palmiano AP 15 196 11341
Sarnano MC 16 3264 14605
Roccafluvione AP 16 2010 16615
Visso MC 16 1107 17722
Acquasanta Terme AP 17 2916 20638
Venarotta AP 17 2066 22704
Acquacanina MC 18 121 22825
Montefalcone Appennino FM 18 424 23249
Smerillo FM 18 365 23614
Force AP 19 1354 24968
Norcia PG 19 4957 29925
Fiastra MC 19 559 30484
Preci PG 20 724 31208

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km NW of Teramo (54892 inhabitants)
48 Km E of Foligno (57155 inhabitants)
61 Km N of L'Aquila (69753 inhabitants)
64 Km NE of Terni (111501 inhabitants)
76 Km E of Perugia (166134 inhabitants)
82 Km NW of Montesilvano (53738 inhabitants)
83 Km S of Ancona (100861 inhabitants)
90 Km NW of Pescara (121014 inhabitants)
94 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
Bulletin
Rev1000 		ML 1.9 2021-11-26
08:36:44		 42.8922 13.2818 25 2022-03-30
13:04:20		 Bollettino Sismico Italiano INGV 98207311
Reviewed
Rev100 		ML 2.0 2021-11-26
08:36:44		 42.8922 13.286 26 2021-11-26
08:43:40		 Sala Sismica INGV-Roma 97810401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-26 08:36:44 ± 0.06
Latitude 42.8922 ± 0.0018
Longitude 13.2818 ± 0.0037
Depth (km) 25 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 98207311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 294
Semi-minor axis of confidence ellipse (meter) 98
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 269
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 61
Number of associated phases, regardless of their use for origin computation 68
Number of defining phases 49
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.49103
Number of stations at which the event was observed 45
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 98207311
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-06 10:34:12

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 97810401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-26 08:43:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BAG8.HNZ. 2021-11-26T08:38:38.55 3.0 undecidable manual Sg 19 0
IV.CMPR.HHZ. 2021-11-26T08:38:16.94 3.0 undecidable manual Sg 11.04 0
IV.MRVN.HHZ. 2021-11-26T08:38:15.83 3.0 undecidable manual Sg 13.33 0
IV.OPPE.HNZ. 2021-11-26T08:38:11.69 3.0 undecidable manual Sg 9.33 0
AC.VLO.HHZ. 2021-11-26T08:38:09.18 3.0 undecidable manual Pn 7.74 0
IV.GIZZ.HHZ. 2021-11-26T08:38:01.91 3.0 undecidable manual Pg 10.97 0
IV.MCRV.HHZ. 2021-11-26T08:37:55.95 3.0 undecidable manual Sn 1 0
IV.PAOL.HHZ. 2021-11-26T08:37:48.62 3.0 undecidable manual Sg 4.56 0
IV.TDS.HHZ. 2021-11-26T08:37:47.62 3.0 undecidable manual Pn 3.89 0
IV.CSFT.HHZ. 2021-11-26T08:37:47.52 3.0 undecidable manual Sn 1.89 0
IV.CET2.HHZ. 2021-11-26T08:37:42.02 3.0 undecidable manual Pn -1.04 0
IV.ZEN8.EHZ. 2021-11-26T08:37:42.95 3.0 undecidable manual Pg 8.58 0
IV.CDRU.HHZ. 2021-11-26T08:37:35.43 3.0 undecidable manual Pg 7.19 0
IV.BRIS.HHZ. 2021-11-26T08:37:33.57 3.0 undecidable manual Sn -1.25 0
IV.STAL.HHZ. 2021-11-26T08:37:33.91 3.0 positive manual Pn -1.82 0
IX.NSC3.EHZ.02 2021-11-26T08:37:28.80 3.0 positive manual Pg 5.71 0
IV.TST01.HHZ. 2021-11-26T08:37:27.98 3.0 undecidable manual Sn 0.62 0
IT.ORP.HGZ. 2021-11-26T08:37:24.94 3.0 undecidable manual Pg 5.63 0
IV.PE3.EHZ. 2021-11-26T08:37:17.02 3.0 undecidable manual S 0.28 0
IV.CING.HNZ. 2021-11-26T08:37:02.10 0.6 undecidable manual S 353 54.1014 108 0.19 45
IV.GIGS.HJZ. 2021-11-26T08:37:02.15 0.6 undecidable manual S 154 54.2013 108 0.22 45
IV.EL6.EHZ. 2021-11-26T08:37:01.44 0.3 undecidable manual S 343 50.616 110 0.4 66
IV.SNTG.HHE. 2021-11-26T08:37:00.72 0.6 undecidable manual S 326 48.8178 111 0.13 47
IV.RM33.EHZ. 2021-11-26T08:36:59.51 0.3 undecidable manual S 187 42.8238 114 0.4 66
IV.GAVE.EHZ. 2021-11-26T08:36:58.49 0.3 undecidable manual S 235 38.5281 117 0.41 67
IV.LNSS.HHZ. 2021-11-26T08:36:58.30 0.3 undecidable manual S 212 37.629 117 0.44 67
IV.TERO.HHZ. 2021-11-26T08:36:58.42 0.3 undecidable manual S 139 39.7269 116 0.06 71
IV.CAMP.HHE. 2021-11-26T08:36:58.48 0.6 undecidable manual S 165 40.8258 115 -0.15 47
IV.CESI.HHZ. 2021-11-26T08:36:57.01 0.6 undecidable manual S 292 33.0447 121 0.22 48
IV.SAP2.EHZ. 2021-11-26T08:36:55.20 0.3 undecidable manual S 23 24.5532 130 0.25 71
IV.SMA1.EHZ. 2021-11-26T08:36:55.64 0.3 undecidable manual S 171 29.3484 125 -0.32 70
IT.MTCL.HGZ. 2021-11-26T08:36:55.09 0.6 undecidable manual S 296 25.5522 129 -0.06 49
IV.PF6.EHZ. 2021-11-26T08:36:55.54 0.3 undecidable manual S 345 28.1496 126 -0.16 72
IV.GIGS.HJZ. 2021-11-26T08:36:54.21 0.3 undecidable manual P 154 54.2013 108 -0.31 67
IV.ASSB.HHZ. 2021-11-26T08:36:54.44 0.3 undecidable manual P 288 53.3022 109 0.05 70
IV.FEMA.HNZ. 2021-11-26T08:36:54.14 0.6 undecidable manual S 292 20.3685 136 0.01 50
IV.GUMA.HHZ. 2021-11-26T08:36:54.29 0.3 undecidable manual S 13 19.3695 138 0.33 71
IV.ARRO.EHZ. 2021-11-26T08:36:54.39 0.1 undecidable manual P 231 54.501 108 -0.18 91
IV.FDMO.HHZ. 2021-11-26T08:36:54.24 0.3 undecidable manual S 315 22.4553 133 -0.29 70
IV.CSP1.EHZ. 2021-11-26T08:36:54.59 0.6 undecidable manual S 344 23.0547 133 -0.04 49
IV.CING.HNZ. 2021-11-26T08:36:54.13 0.1 undecidable manual P 353 54.1014 108 -0.37 88
IV.MF5.EHZ. 2021-11-26T08:36:53.96 0.3 undecidable manual S 54 17.9709 140 0.26 71
IV.MTRA.EHZ. 2021-11-26T08:36:53.45 0.3 undecidable manual S 148 17.6712 141 -0.21 73
IV.SNTG.HHE. 2021-11-26T08:36:53.48 0.1 undecidable manual P 326 48.8178 111 -0.26 91
IV.NRCA.HNZ. 2021-11-26T08:36:53.09 0.3 undecidable manual S 245 15.0738 145 -0.15 73
IV.EL6.EHZ. 2021-11-26T08:36:53.88 0.3 undecidable manual P 343 50.616 110 -0.12 70
IV.TERO.HHZ. 2021-11-26T08:36:52.40 0.3 undecidable manual P 139 39.7269 116 -0.06 73
IV.CAMP.HHE. 2021-11-26T08:36:52.38 0.3 undecidable manual P 165 40.8258 115 -0.23 70
IV.GAVE.EHZ. 2021-11-26T08:36:52.38 0.3 undecidable manual P 235 38.5281 117 0.09 72
IV.MC2.EHZ. 2021-11-26T08:36:52.57 0.3 undecidable manual S 286 7.881 161 0.21 75
IV.RM33.EHZ. 2021-11-26T08:36:52.96 0.1 positive manual P 187 42.8238 114 0.07 95
IV.LNSS.HHZ. 2021-11-26T08:36:52.19 0.3 undecidable manual P 212 37.629 117 0.02 73
IV.CESI.HHZ. 2021-11-26T08:36:51.60 0.3 undecidable manual P 292 33.0447 121 0.05 73
IV.MNTT.EHZ. 2021-11-26T08:36:51.56 0.3 undecidable manual P 53 31.6461 122 0.19 70
IV.MMO1.EHZ. 2021-11-26T08:36:51.84 0.3 undecidable manual S 78 3.6963 171 -0.25 73
IV.SMA1.EHZ. 2021-11-26T08:36:51.04 0.3 positive manual P 171 29.3484 125 -0.03 74
IV.FDMO.HHZ. 2021-11-26T08:36:50.11 0.1 negative manual P 315 22.4553 133 -0.14 97
IV.PF6.EHZ. 2021-11-26T08:36:50.72 0.1 undecidable manual P 345 28.1496 126 -0.2 95
IV.CSP1.EHZ. 2021-11-26T08:36:50.27 0.1 negative manual P 344 23.0547 133 -0.04 99
IV.SAP2.EHZ. 2021-11-26T08:36:50.52 0.3 undecidable manual P 23 24.5532 130 0.03 74
IV.GUMA.HHZ. 2021-11-26T08:36:50.05 0.1 negative manual P 13 19.3695 138 0.14 98
IT.MTCL.HGZ. 2021-11-26T08:36:50.50 0.1 undecidable manual P 296 25.5522 129 -0.1 97
IV.MC2.EHZ. 2021-11-26T08:36:49.13 0.1 positive manual P 286 7.881 161 0.14 100
IV.NRCA.HNZ. 2021-11-26T08:36:49.49 0.3 undecidable manual P 245 15.0738 145 -0.01 76
IV.MF5.EHZ. 2021-11-26T08:36:49.96 0.1 undecidable manual P 54 17.9709 140 0.2 96
IV.MTRA.EHZ. 2021-11-26T08:36:49.62 0.3 undecidable manual P 148 17.6712 141 -0.12 74
IV.FEMA.HNZ. 2021-11-26T08:36:49.83 0.1 undecidable manual P 292 20.3685 136 -0.19 96
IV.MMO1.EHZ. 2021-11-26T08:36:48.73 0.3 undecidable manual P 78 3.6963 171 -0.1 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MMO1.EHN. ML:2.0 0.0006535 0.4 AML other m 2021-11-26T08:36:52.20
IV.MMO1.EHE. ML:1.8 0.0004365 0.26 AML other m 2021-11-26T08:36:52.86
IV.NRCA.HNE. ML:2.1 0.0007395 0.4 AML other m 2021-11-26T08:36:53.61
IV.NRCA.HHE. ML:2.1 0.0006815 0.68 AML other m 2021-11-26T08:36:53.81
IV.NRCA.HHN. ML:2.0 0.0005335 1.86 AML other m 2021-11-26T08:36:54.94
IV.NRCA.HNN. ML:2.0 0.000536 1.1 AML other m 2021-11-26T08:36:54.57
IV.MTRA.EHN. ML:1.8 0.0002875 0.26 AML other m 2021-11-26T08:36:54.22
IV.MTRA.EHE. ML:1.9 0.00040649999999999996 1.12 AML other m 2021-11-26T08:36:54.80
IV.FDMO.HHE. ML:1.9 0.0003705 0.66 AML other m 2021-11-26T08:36:54.22
IV.GUMA.HNE. ML:2.1 0.0005669999999999999 1.16 AML other m 2021-11-26T08:36:54.79
IV.GUMA.HHE. ML:2.1 0.00061 0.28 AML other m 2021-11-26T08:36:54.79
IV.GUMA.HHN. ML:2.0 0.00047750000000000006 0.42 AML other m 2021-11-26T08:36:55.44
IV.GUMA.HNN. ML:2.0 0.00047799999999999996 0.28 AML other m 2021-11-26T08:36:55.52
IV.FDMO.HHN. ML:2.2 0.0006855 0.42 AML other m 2021-11-26T08:36:55.78
IV.SMA1.EHE. ML:1.8 0.00021599999999999996 1.3 AML other m 2021-11-26T08:36:56.95
IV.SMA1.EHN. ML:1.9 0.0002875 0.22 AML other m 2021-11-26T08:36:56.23
IV.CESI.HHE. ML:1.7 0.000186 0.76 AML other m 2021-11-26T08:36:57.80
IV.CESI.HHN. ML:1.9 0.00026649999999999997 0.44 AML other m 2021-11-26T08:36:57.73
IV.LNSS.HHN. ML:1.8 0.00019350000000000001 1.06 AML other m 2021-11-26T08:36:58.67
IV.GAVE.EHN. ML:1.6 0.000118 1.2 AML other m 2021-11-26T08:36:59.19
IV.LNSS.HHE. ML:1.6 0.000126 0.92 AML other m 2021-11-26T08:36:59.36
IV.GAVE.EHE. ML:1.7 0.00014000000000000001 1.46 AML other m 2021-11-26T08:37:00.83
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
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