Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 04-12-2021 and time 18:16:54 (UTC) in region 3 km SE Monte Urano (FM)

A magnitude ML 1.7 earthquake occured in region: 3 km SE Monte Urano (FM), on

  • 04-12-2021 18:16:54 (UTC)
  • 04-12-2021 19:16:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.186, 13.698 at 36 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Monte Urano FM 3 8353 8353
Fermo FM 3 37655 46008
Sant'Elpidio a Mare FM 5 17110 63118
Torre San Patrizio FM 7 2048 65166
Montegranaro FM 8 12990 78156
Porto San Giorgio FM 8 16121 94277
Rapagnano FM 9 2145 96422
Porto Sant'Elpidio FM 10 26152 122574
Monte San Pietrangeli FM 10 2458 125032
Ponzano di Fermo FM 10 1674 126706
Monte San Giusto MC 10 8191 134897
Magliano di Tenna FM 10 1452 136349
Lapedona FM 10 1166 137515
Monterubbiano FM 11 2230 139745
Grottazzolina FM 11 3398 143143
Moresco FM 11 598 143741
Monte Giberto FM 12 801 144542
Altidona FM 12 3390 147932
Francavilla d'Ete FM 13 964 148896
Petritoli FM 14 2335 151231
Civitanova Marche MC 14 41983 193214
Montegiorgio FM 14 6851 200065
Campofilone FM 15 1916 201981
Pedaso FM 15 2800 204781
Montecosaro MC 16 7113 211894
Montefiore dell'Aso AP 16 2123 214017
Monte Vidon Combatte FM 16 433 214450
Montottone FM 16 979 215429
Belmonte Piceno FM 17 646 216075
Corridonia MC 17 15430 231505
Massignano AP 17 1638 233143
Carassai AP 17 1100 234243
Morrovalle MC 17 10195 244438
Monsampietro Morico FM 17 659 245097
Mogliano MC 18 4696 249793
Massa Fermana FM 18 963 250756
Ortezzano FM 19 774 251530
Monte Vidon Corrado FM 19 731 252261
Montappone FM 19 1682 253943
Petriolo MC 19 1998 255941
Monte Rinaldo FM 20 379 256320

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km S of Ancona (100861 inhabitants)
59 Km N of Teramo (54892 inhabitants)
83 Km NW of Montesilvano (53738 inhabitants)
85 Km E of Foligno (57155 inhabitants)
91 Km NW of Pescara (121014 inhabitants)
91 Km SE of Fano (60888 inhabitants)
96 Km N of L'Aquila (69753 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.7 2021-12-04
18:16:54		 43.1858 13.6977 36 2021-12-04
18:29:44		 Sala Sismica INGV-Roma 98139601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-04 18:16:54 ± 0.17
Latitude 43.1858 ± 0.0081
Longitude 13.6977 ± 0.0136
Depth (km) 36 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98139601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1154
Semi-minor axis of confidence ellipse (meter) 678
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 307
Circular confidence region, given by single value of horizontal uncertainty (meter) 1150
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 198
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.76352
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 98139601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-04 18:29:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ZCCA.HHZ. 2021-12-04T18:18:16.76 3.0 undecidable manual Sg 5.71 0
IV.IMOL.HNZ. 2021-12-04T18:17:57.61 3.0 undecidable manual Sn -4.95 0
IV.MNTV.EHZ. 2021-12-04T18:17:37.57 3.0 undecidable manual Pn -5.47 0
IV.BDI.HHZ. 2021-12-04T18:17:36.88 3.0 positive manual Pg 3.11 0
IV.PP3.EHZ. 2021-12-04T18:17:27.22 3.0 undecidable manual S -0.26 0
IV.FIR.HHZ. 2021-12-04T18:17:25.77 3.0 positive manual Pg -0.41 0
IV.LNSS.HNE. 2021-12-04T18:17:21.55 0.3 undecidable manual S 220 0.7554 54 1.07 49
IV.RM33.EHN. 2021-12-04T18:17:21.26 0.6 undecidable manual S 208 0.7635 54 0.59 40
IV.CESI.HNZ. 2021-12-04T18:17:17.12 0.3 undecidable manual S 253 0.6061 114 0.44 66
IV.SMA1.EHZ. 2021-12-04T18:17:16.94 0.3 undecidable manual S 206 0.6151 113 0.02 72
IV.NRCA.HHZ. 2021-12-04T18:17:15.27 0.6 undecidable manual S 231 0.5531 116 0.03 49
IV.MMUR.HNZ. 2021-12-04T18:17:15.02 3.0 undecidable manual P 3.44 0
IV.TERO.HNZ. 2021-12-04T18:17:15.99 0.3 undecidable manual S 187 0.5666 115 0.38 69
IV.MML1.EHZ. 2021-12-04T18:17:14.85 0.3 undecidable manual S 262 0.5342 117 0.11 72
IV.EL6.EHZ. 2021-12-04T18:17:13.22 3.0 negative manual P 3.48 0
IV.MC2.EHZ. 2021-12-04T18:17:12.69 0.3 undecidable manual S 234 0.4614 121 -0.18 72
IV.FDMO.HHZ. 2021-12-04T18:17:12.98 0.3 undecidable manual S 252 0.4694 120 -0.09 74
IV.AOI.HHN. 2021-12-04T18:17:11.62 0.3 undecidable manual S 349 0.3705 127 0.99 55
IV.CSP1.EHZ. 2021-12-04T18:17:10.68 0.3 undecidable manual S 256 0.3714 127 0.03 76
IV.GUMA.HHZ. 2021-12-04T18:17:09.11 0.3 undecidable manual S 245 0.2914 135 0.25 74
IV.RM33.EHN. 2021-12-04T18:17:09.70 0.3 undecidable manual P 208 0.7635 54 -0.05 70
IV.LNSS.HNE. 2021-12-04T18:17:09.61 0.1 undecidable manual P 220 0.7554 54 -0.03 94
IV.MF5.EHZ. 2021-12-04T18:17:08.54 0.1 undecidable manual S 221 0.2635 138 0.26 99
IV.SAP2.EHE. 2021-12-04T18:17:08.23 0.3 undecidable manual S 248 0.2347 141 0.49 71
IV.CESI.HNZ. 2021-12-04T18:17:07.11 0.1 undecidable manual P 253 0.6061 114 -0.34 91
IV.SMA1.EHZ. 2021-12-04T18:17:07.36 0.3 undecidable manual P 206 0.6151 113 -0.22 69
IV.TERO.HNZ. 2021-12-04T18:17:06.84 0.3 undecidable manual P 187 0.5666 115 0.01 73
IV.NRCA.HHZ. 2021-12-04T18:17:06.01 0.3 undecidable manual P 231 0.5531 116 -0.61 63
IV.MML1.EHZ. 2021-12-04T18:17:05.97 0.3 undecidable manual P 262 0.5342 117 -0.36 69
IV.MC2.EHZ. 2021-12-04T18:17:04.81 0.1 undecidable manual P 234 0.4614 121 -0.43 91
IV.FDMO.HHZ. 2021-12-04T18:17:04.80 0.3 undecidable manual P 252 0.4694 120 -0.56 66
IV.AOI.HHN. 2021-12-04T18:17:03.94 0.3 undecidable manual P 349 0.3705 127 -0.02 76
IV.CSP1.EHZ. 2021-12-04T18:17:03.52 0.3 undecidable manual P 256 0.3714 127 -0.44 70
IV.MF5.EHZ. 2021-12-04T18:17:02.43 0.1 undecidable manual P 221 0.2635 138 -0.17 100
IV.SAP2.EHE. 2021-12-04T18:17:02.16 0.3 undecidable manual P 248 0.2347 141 -0.13 76
IV.GUMA.HHZ. 2021-12-04T18:17:02.72 0.1 undecidable manual P 245 0.2914 135 -0.21 99
IV.MNTT.EHZ. 2021-12-04T18:17:01.68 0.3 undecidable manual P 211 0.1448 154 0.23 77
IV.VVLD.HHZ. 2021-12-04T18:16:58.68 3.0 undecidable manual S -1.21 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.7 9.870796E-5 0.1536 AML other m 2021-12-04T18:17:13.31
IV.FDMO.HHN. ML:1.5 6.25E-5 0.42 AML other m 2021-12-04T18:17:13.56
IV.MF5.EHE. ML:1.6 0.000126765435 1.1776 AML other m 2021-12-04T18:17:08.84
IV.MF5.EHN. ML:1.8 0.00018268885 10.4064 AML other m 2021-12-04T18:17:08.65
IV.GUMA.HHE. ML:1.6 0.0001092429 0.32 AML other m 2021-12-04T18:17:09.38
IV.GUMA.HHN. ML:1.4 6.850735E-5 0.4608 AML other m 2021-12-04T18:17:18.42
IV.CSP1.EHE. ML:1.7 0.000120035265 0.1536 AML other m 2021-12-04T18:17:11.46
IV.CSP1.EHN. ML:1.7 0.000107727705 0.1024 AML other m 2021-12-04T18:17:11.42
IV.MC2.EHE. ML:1.8 0.000136588253 0.1792 AML other m 2021-12-04T18:17:13.05
IV.MC2.EHN. ML:1.9 0.00015921972 0.2048 AML other m 2021-12-04T18:17:13.96
IV.SMA1.EHE. ML:1.6 5.3749055E-5 0.3712 AML other m 2021-12-04T18:17:17.50
IV.SMA1.EHN. ML:1.5 4.7946215E-5 0.1792 AML other m 2021-12-04T18:17:17.89
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