Earthquake with magnitude of ML 1.7 on date 23-07-2020 and time 03:26:20 (Italy) in region 2 km E Offida (AP)

A magnitude ML 1.7 earthquake occured in region: 2 km E Offida (AP), on

  • 23-07-2020 01:26:20 (UTC)
  • 23-07-2020 03:26:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.94, 13.71 at 27 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Offida AP 2 5058 5058
Castorano AP 5 2380 7438
Cossignano AP 6 978 8416
Appignano del Tronto AP 6 1785 10201
Colli del Tronto AP 7 3668 13869
Castignano AP 7 2796 16665
Spinetoli AP 7 7215 23880
Castel di Lama AP 8 8634 32514
Monsampolo del Tronto AP 8 4611 37125
Ripatransone AP 8 4309 41434
Acquaviva Picena AP 8 3831 45265
Montalto delle Marche AP 10 2122 47387
Monteprandone AP 10 12655 60042
Carassai AP 11 1100 61142
Montedinove AP 11 488 61630
Ancarano TE 11 1857 63487
Maltignano AP 12 2401 65888
Sant'Egidio alla Vibrata TE 12 9811 75699
Rotella AP 12 906 76605
Controguerra TE 13 2436 79041
Montefiore dell'Aso AP 13 2123 81164
Ortezzano FM 14 774 81938
Torano Nuovo TE 14 1611 83549
Grottammare AP 14 16006 99555
San Benedetto del Tronto AP 14 47303 146858
Monte Vidon Combatte FM 14 433 147291
Folignano AP 14 9241 156532
Ascoli Piceno AP 14 49407 205939
Massignano AP 14 1638 207577
Colonnella TE 15 3734 211311
Monte Rinaldo FM 15 379 211690
Petritoli FM 15 2335 214025
Cupra Marittima AP 16 5398 219423
Nereto TE 16 5242 224665
Corropoli TE 16 5045 229710
Monterubbiano FM 17 2230 231940
Moresco FM 17 598 232538
Montelparo FM 17 778 233316
Montottone FM 17 979 234295
Martinsicuro TE 18 16033 250328
Campofilone FM 18 1916 252244
Force AP 18 1354 253598
Monte Giberto FM 18 801 254399
Sant'Omero TE 18 5243 259642
Ponzano di Fermo FM 19 1674 261316
Civitella del Tronto TE 19 5116 266432
Venarotta AP 19 2066 268498
Monteleone di Fermo FM 19 395 268893
Monsampietro Morico FM 19 659 269552
Santa Vittoria in Matenano FM 20 1330 270882
Lapedona FM 20 1166 272048
Altidona FM 20 3390 275438

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km N of Teramo (54892 inhabitants)
59 Km NW of Montesilvano (53738 inhabitants)
67 Km NW of Pescara (121014 inhabitants)
70 Km NE of L'Aquila (69753 inhabitants)
75 Km NW of Chieti (51815 inhabitants)
77 Km S of Ancona (100861 inhabitants)
82 Km E of Foligno (57155 inhabitants)
97 Km E of Terni (111501 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.7 2020-07-23
01:26:20
42.94 13.71 27 2020-07-23
01:31:14
Sala Sismica INGV-Roma 81263111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-23 01:26:20 ± 0.17
Latitude 42.94 ± 0.01
Longitude 13.71 ± 0.01
Depth (km) 27 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81263111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 592
Semi-minor axis of confidence ellipse (meter) 531
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 610
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 166
Number of associated phases, regardless of their use for origin computation 26
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
Epicentral distance of station farthest from the epicenter (degree) 0.59265
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 81263111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-23 01:31:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-07-23T01:26:41.74 0.3 undecidable manual S 311 0.5927 106 0.8 58
IV.INTR.HHZ. 2020-07-23T01:26:40.10 3.0 positive manual P 0.71 0
IV.SMA1.EHZ. 2020-07-23T01:26:36.08 0.6 undecidable manual S 222 0.4137 114 0.13 47
IV.NRCA.HHZ. 2020-07-23T01:26:36.85 1.0 undecidable manual S 257 0.4506 112 -0.1 24
IV.CSP1.EHZ. 2020-07-23T01:26:35.66 0.3 undecidable manual S 293 0.4011 115 0.04 73
IV.MC2.EHZ. 2020-07-23T01:26:35.51 0.3 undecidable manual S 266 0.384 116 0.35 69
IV.GUMA.HHZ. 2020-07-23T01:26:33.06 0.3 undecidable manual S 294 0.3022 123 0 74
IV.TERO.HHZ. 2020-07-23T01:26:33.84 0.6 undecidable manual S 194 0.3247 121 0.22 47
IV.MMO1.EHZ. 2020-07-23T01:26:32.37 0.1 undecidable manual S 262 0.2851 125 -0.25 95
IV.MNTP.HNE. 2020-07-23T01:26:32.48 0.3 undecidable manual S 318 0.2671 127 0.29 72
IV.EL6.EHZ. 2020-07-23T01:26:32.25 0.1 undecidable manual P 311 0.5927 106 0.03 94
IV.MF5.EHZ. 2020-07-23T01:26:30.64 0.3 undecidable manual S 285 0.1916 137 0.11 75
IV.SMA1.EHZ. 2020-07-23T01:26:29.25 0.6 negative manual P 222 0.4137 114 -0.09 48
IV.MNTT.EHZ. 2020-07-23T01:26:29.91 0.3 undecidable manual S 325 0.1502 145 0.14 75
IV.NRCA.HHZ. 2020-07-23T01:26:29.79 0.6 negative manual P 257 0.4506 112 -0.13 47
IV.MC2.EHZ. 2020-07-23T01:26:28.85 0.6 negative manual P 266 0.384 116 -0.03 49
IV.CSP1.EHZ. 2020-07-23T01:26:28.85 0.3 undecidable manual P 293 0.4011 115 -0.3 69
IV.OFFI.HHZ. 2020-07-23T01:26:28.18 0.3 undecidable manual S 261 0.0198 175 -0.21 76
IV.TERO.HHZ. 2020-07-23T01:26:28.14 0.3 undecidable manual P 194 0.3247 121 0.15 71
IV.MMO1.EHZ. 2020-07-23T01:26:27.10 0.6 positive manual P 262 0.2851 125 -0.32 47
IV.GUMA.HHZ. 2020-07-23T01:26:27.51 0.1 negative manual P 294 0.3022 123 -0.16 96
IV.MNTP.HNE. 2020-07-23T01:26:26.94 0.1 undecidable manual P 318 0.2671 127 -0.23 96
IV.MF5.EHZ. 2020-07-23T01:26:26.10 0.1 negative manual P 285 0.1916 137 -0.11 100
IV.TRTR.HHZ. 2020-07-23T01:26:26.79 0.3 positive manual P 131 0.197 137 0.52 66
IV.MNTT.EHZ. 2020-07-23T01:26:25.53 1.0 negative manual P 325 0.1502 145 -0.24 25
IV.OFFI.HHZ. 2020-07-23T01:26:24.68 0.1 negative manual P 261 0.0198 175 -0.29 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OFFI.HHE. ML:1.8 0.0003445 0.24 AML other m 2020-07-23T01:26:28.39
IV.OFFI.HHN. ML:1.8 0.000391 0.56 AML other m 2020-07-23T01:26:29.47
IV.MF5.EHE. ML:1.8 0.0002835 0.44 AML other m 2020-07-23T01:26:30.75
IV.MNTT.EHN. ML:1.9 0.0003775 0.94 AML other m 2020-07-23T01:26:31.00
IV.MNTT.EHE. ML:1.9 0.000355 1.3 AML other m 2020-07-23T01:26:31.97
IV.MF5.EHN. ML:1.6 0.0001875 1.72 AML other m 2020-07-23T01:26:31.88
IV.GUMA.HHE. ML:1.8 0.000198 0.32 AML other m 2020-07-23T01:26:33.36
IV.GUMA.HHN. ML:1.8 0.000222 0.24 AML other m 2020-07-23T01:26:33.52
IV.TERO.HHN. ML:0.9 2.685E-5 0.38 AML other m 2020-07-23T01:26:34.20
IV.TERO.HHE. ML:1.1 3.585E-5 0.58 AML other m 2020-07-23T01:26:34.10
IV.NRCA.HHN. ML:1.4 5.285E-5 0.1 AML other m 2020-07-23T01:26:37.87
IV.NRCA.HHE. ML:1.3 4.695E-5 0.14 AML other m 2020-07-23T01:26:39.23
IV.SMA1.EHN. ML:1.1 2.95E-5 0.44 AML other m 2020-07-23T01:26:39.32
IV.TRTR.HHE. ML:2.1 0.0005325 0.92 AML other m 2020-07-23T01:26:39.74
IV.TRTR.HHN. ML:1.9 0.0003715 0.9 AML other m 2020-07-23T01:26:40.68
IV.SMA1.EHE. ML:0.9 2.2E-5 0.7 AML other m 2020-07-23T01:26:41.79
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download