Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 29-07-2021 and time 15:05:20 (UTC) in region 1 km W Roccafluvione (AP)

A magnitude ML 2.0 earthquake occured in region: 1 km W Roccafluvione (AP), on

  • 29-07-2021 15:05:20 (UTC)
  • 29-07-2021 17:05:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8660, 13.4590 at 20 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
Roccafluvione AP 2 2010 2010
Venarotta AP 3 2066 4076
Palmiano AP 4 196 4272
Ascoli Piceno AP 10 49407 53679
Montegallo AP 11 523 54202
Comunanza AP 11 3166 57368
Force AP 11 1354 58722
Montemonaco AP 11 604 59326
Acquasanta Terme AP 11 2916 62242
Montefortino FM 13 1178 63420
Rotella AP 13 906 64326
Montefalcone Appennino FM 14 424 64750
Valle Castellana TE 15 977 65727
Folignano AP 15 9241 74968
Amandola FM 15 3629 78597
Smerillo FM 16 365 78962
Castignano AP 16 2796 81758
Montedinove AP 16 488 82246
Arquata del Tronto AP 17 1178 83424
Appignano del Tronto AP 17 1785 85209
Santa Vittoria in Matenano FM 18 1330 86539
Montelparo FM 18 778 87317
Montalto delle Marche AP 18 2122 89439
Monte San Martino MC 19 765 90204
Maltignano AP 19 2401 92605
Civitella del Tronto TE 20 5116 97721

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of Teramo (54892 inhabitants)
57 Km N of L'Aquila (69753 inhabitants)
62 Km E of Foligno (57155 inhabitants)
69 Km NW of Montesilvano (53738 inhabitants)
74 Km E of Terni (111501 inhabitants)
76 Km NW of Pescara (121014 inhabitants)
82 Km NW of Chieti (51815 inhabitants)
84 Km S of Ancona (100861 inhabitants)
91 Km E of Perugia (166134 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 2.0 2021-07-29
15:05:20		 42.8663 13.4588 20 2021-12-29
11:12:30		 Bollettino Sismico Italiano INGV 95382681
Reviewed
Rev100 		ML 2.1 2021-07-29
15:05:20		 42.8647 13.4587 20 2021-07-29
15:18:38		 Sala Sismica INGV-Roma 93360351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-29 15:05:20 ± 0.1
Latitude 42.8663 ± 0.0027
Longitude 13.4588 ± 0.0049
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95382681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 363
Semi-minor axis of confidence ellipse (meter) 266
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 266
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89
Number of associated phases, regardless of their use for origin computation 64
Number of defining phases 35
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) 0.67809
Number of stations at which the event was observed 42
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 25
Type of magnitude ML
Reference to an origin 95382681
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-13 11:37:01

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 93360351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-29 15:18:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIPA.HHZ. 2021-07-29T15:06:52.43 3.0 undecidable manual Sg 7.18 0
NI.VINO.HHZ. 2021-07-29T15:06:49.81 3.0 undecidable manual Sg 7.06 0
IV.LADO.EHZ. 2021-07-29T15:06:45.16 3.0 undecidable manual Sn -5.78 0
CR.STON.BHZ. 2021-07-29T15:06:45.90 3.0 undecidable manual Sg 16.48 0
IV.SPS2.HHZ. 2021-07-29T15:06:35.39 3.0 undecidable manual Sn -7.9 0
IV.HVIT.HHZ. 2021-07-29T15:06:34.69 3.0 positive manual Pg 14.31 0
IV.MNTV.EHZ. 2021-07-29T15:06:31.57 3.0 undecidable manual Sn 2.66 0
MN.BNI.HHZ. 2021-07-29T15:06:30.79 3.0 undecidable manual Pg 10.6 0
IV.IFIL.HHZ. 2021-07-29T15:06:29.59 3.0 undecidable manual Sn -9.99 0
IV.PZUN.HHZ. 2021-07-29T15:06:24.77 3.0 undecidable manual Sg 12.7 0
IV.CMPR.HHZ. 2021-07-29T15:06:14.62 3.0 undecidable manual Sg 2.73 0
IX.COL3.HHZ.02 2021-07-29T15:06:12.33 3.0 undecidable manual Sg 7.03 0
IV.MFNL.HHZ. 2021-07-29T15:06:11.78 3.0 positive manual Pg 3.37 0
IV.IFIL.HHZ. 2021-07-29T15:06:08.73 3.0 negative manual Pg 9.21 0
CR.STON.BHZ. 2021-07-29T15:06:06.04 3.0 undecidable manual Pg 15.33 0
IV.SPS2.HHZ. 2021-07-29T15:06:06.58 3.0 negative manual Pg 8.08 0
IX.MNT3.EHZ.02 2021-07-29T15:06:05.63 3.0 undecidable manual Sg 6.84 0
GU.RNCA.HHZ. 2021-07-29T15:06:03.30 3.0 positive manual Pg 6.33 0
IV.CET2.HHZ. 2021-07-29T15:06:01.85 3.0 undecidable manual Pg 8.34 0
IV.CDRU.HNZ. 2021-07-29T15:06:00.50 3.0 undecidable manual Sn -8.13 0
IV.LADO.EHZ. 2021-07-29T15:05:57.65 3.0 undecidable manual Pn -5.15 0
IV.CAVE.HHZ. 2021-07-29T15:05:56.65 3.0 negative manual Pg 10.56 0
IV.MCIV.CHZ. 2021-07-29T15:05:44.58 3.0 undecidable manual Sg 4.27 0
IV.FERS.EHZ. 2021-07-29T15:05:42.04 3.0 positive manual Pn -1.83 0
OT.OT14.EHZ. 2021-07-29T15:05:42.17 3.0 undecidable manual Pg 8.73 0
IV.ASSB.HHZ. 2021-07-29T15:05:41.29 0.6 undecidable manual S 287 67.8765 99 0.17 45
IV.CDRU.HNZ. 2021-07-29T15:05:40.01 3.0 undecidable manual Pg 0.98 0
IV.EL6.EHZ. 2021-07-29T15:05:39.18 0.3 undecidable manual S 331 58.9965 101 0.39 65
IV.PII.HHZ. 2021-07-29T15:05:38.80 3.0 positive manual Pn 0.26 0
IV.MML1.EHZ. 2021-07-29T15:05:36.10 0.3 undecidable manual S 305 48.1185 104 0.14 70
IV.CESI.HHZ. 2021-07-29T15:05:36.21 0.3 undecidable manual S 289 47.5191 104 0.39 66
IV.SFI.EHZ. 2021-07-29T15:05:36.79 3.0 undecidable manual Pg 5.93 0
IV.GAVE.HNZ. 2021-07-29T15:05:36.78 0.3 undecidable manual S 247 49.8168 103 0.37 67
IV.ATCC.EHZ. 2021-07-29T15:05:33.52 0.1 undecidable manual P 298 75.2691 98 0.04 90
IV.FDMO.HHZ. 2021-07-29T15:05:32.51 0.6 undecidable manual S 302 35.6421 110 -0.25 47
IV.ASSB.HHZ. 2021-07-29T15:05:32.23 0.1 undecidable manual P 287 67.8765 99 -0.12 90
IV.CSP1.EHZ. 2021-07-29T15:05:31.91 0.3 undecidable manual S 321 32.4453 113 -0.06 73
IV.NRCA.HHZ. 2021-07-29T15:05:31.16 0.3 undecidable manual S 263 28.2495 117 0.2 72
IV.T1299.HNZ. 2021-07-29T15:05:31.71 0.6 undecidable manual S 209 29.4483 115 0.45 46
IV.TERO.HHZ. 2021-07-29T15:05:31.26 0.3 undecidable manual S 156 29.4483 115 0 74
IV.SAP2.EHN. 2021-07-29T15:05:30.74 0.3 undecidable manual S 349 26.0517 119 0.3 70
IV.EL6.EHZ. 2021-07-29T15:05:30.73 0.1 undecidable manual P 331 58.9965 101 -0.27 89
IV.SMA1.EHZ. 2021-07-29T15:05:30.96 0.3 undecidable manual S 201 28.0497 117 0.05 74
IV.MNTT.EHZ. 2021-07-29T15:05:30.39 0.6 undecidable manual S 27 24.3534 121 0.33 46
IV.GAVE.HNZ. 2021-07-29T15:05:29.67 0.1 undecidable manual P 247 49.8168 103 0.04 95
IV.MC2.EHZ. 2021-07-29T15:05:29.64 0.3 undecidable manual S 283 22.4553 124 0.01 75
IV.OFFI.HHZ. 2021-07-29T15:05:29.51 0.6 undecidable manual S 67 19.9689 128 0.43 46
IV.MML1.EHZ. 2021-07-29T15:05:29.25 0.1 undecidable manual P 305 48.1185 104 -0.12 94
IV.CESI.HHZ. 2021-07-29T15:05:29.25 0.1 undecidable manual P 289 47.5191 104 -0.04 95
IV.MRLC.HHZ. 2021-07-29T15:05:28.10 3.0 undecidable manual Pn -9.49 0
IV.MTRA.HNZ. 2021-07-29T15:05:27.46 0.3 undecidable manual S 203 13.1757 141 -0.33 71
IV.FDMO.HHZ. 2021-07-29T15:05:27.30 0.1 undecidable manual P 302 35.6421 110 -0.22 94
IV.MF5.EHZ. 2021-07-29T15:05:27.47 0.3 undecidable manual S 0 13.4754 141 -0.37 71
IV.SMA1.EHZ. 2021-07-29T15:05:26.48 0.1 undecidable manual P 201 28.0497 117 0.03 99
IV.T1299.HNZ. 2021-07-29T15:05:26.74 0.6 undecidable manual P 209 29.4483 115 0.08 49
IV.TERO.HHZ. 2021-07-29T15:05:26.56 0.1 undecidable manual P 156 29.4483 115 -0.09 97
IV.CSP1.EHZ. 2021-07-29T15:05:26.87 0.1 undecidable manual P 321 32.4453 113 -0.2 95
IV.NRCA.HHZ. 2021-07-29T15:05:26.38 0.1 undecidable manual P 263 28.2495 117 -0.1 97
IV.OFFI.HHZ. 2021-07-29T15:05:25.73 0.1 undecidable manual P 67 19.9689 128 0.33 94
IV.MNTT.EHZ. 2021-07-29T15:05:25.97 0.1 undecidable manual P 27 24.3534 121 0.01 100
IV.SAP2.EHN. 2021-07-29T15:05:25.97 0.1 undecidable manual P 349 26.0517 119 -0.21 96
IV.MC2.EHZ. 2021-07-29T15:05:25.70 0.1 undecidable manual P 283 22.4553 124 -0.02 100
IV.MF5.EHZ. 2021-07-29T15:05:24.46 0.1 undecidable manual P 0 13.4754 141 -0.22 98
IV.MTRA.HNZ. 2021-07-29T15:05:24.50 0.1 undecidable manual P 203 13.1757 141 -0.15 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNN. ML:2.2 0.001063 0.1 AML other m 2021-07-29T15:05:27.61
IV.MTRA.EHN. ML:2.2 0.001045 0.1 AML other m 2021-07-29T15:05:27.61
IV.MF5.EHN. ML:2.0 0.000611 0.26 AML other m 2021-07-29T15:05:27.86
IV.MF5.EHE. ML:1.6 0.000268 0.22 AML other m 2021-07-29T15:05:27.82
IV.MTRA.HNE. ML:2.2 0.0011149999999999999 0.52 AML other m 2021-07-29T15:05:27.83
IV.MTRA.EHE. ML:2.2 0.0011 0.52 AML other m 2021-07-29T15:05:27.83
IV.OFFI.HHE. ML:2.0 0.000489 0.56 AML other m 2021-07-29T15:05:30.86
IV.MNTT.EHN. ML:2.0 0.0005325 0.18 AML other m 2021-07-29T15:05:31.06
IV.SMA1.EHN. ML:2.0 0.0004 0.14 AML other m 2021-07-29T15:05:31.22
IV.SMA1.EHE. ML:2.0 0.0004215 0.3 AML other m 2021-07-29T15:05:31.23
IV.MNTT.EHE. ML:2.4 0.0011600000000000002 0.48 AML other m 2021-07-29T15:05:31.63
IV.OFFI.HHN. ML:2.0 0.0004895 0.46 AML other m 2021-07-29T15:05:31.44
IV.NRCA.HHE. ML:2.0 0.00038700000000000003 0.42 AML other m 2021-07-29T15:05:32.31
IV.NRCA.HNE. ML:1.9 0.00035737945 0.1408 AML other m 2021-07-29T15:05:32.11
IV.NRCA.HHN. ML:2.1 0.000522 0.1 AML other m 2021-07-29T15:05:32.67
IV.CSP1.EHN. ML:2.2 0.0005585 0.72 AML other m 2021-07-29T15:05:32.27
IV.CSP1.EHE. ML:2.2 0.0005565 1.32 AML other m 2021-07-29T15:05:32.78
IV.FDMO.HHE. ML:1.8 0.0001945 0.14 AML other m 2021-07-29T15:05:32.83
IV.FDMO.HHN. ML:1.8 0.000242 0.2 AML other m 2021-07-29T15:05:32.89
IV.CESI.HHN. ML:1.9 0.000222 0.18 AML other m 2021-07-29T15:05:36.65
IV.CESI.HHE. ML:1.8 0.000154 0.34 AML other m 2021-07-29T15:05:36.55
IV.MML1.EHE. ML:1.5 0.00007944999999999999 1.02 AML other m 2021-07-29T15:05:36.73
IV.MML1.EHN. ML:1.8 0.00017749999999999998 0.26 AML other m 2021-07-29T15:05:36.75
IV.GAVE.EHN. ML:2.1 0.000305 0.26 AML other m 2021-07-29T15:05:38.19
IV.GAVE.EHE. ML:2.1 0.000306 0.14 AML other m 2021-07-29T15:05:38.24
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
Waveforms Seismic signals in miniseed + resp format Download