Earthquake with magnitude of ML 1.5 on date 03-12-2021 and time 18:51:19 (Italy) in region 4 km N Ussita (MC)

A magnitude ML 1.5 earthquake occured in region: 4 km N Ussita (MC), on

  • 03-12-2021 17:51:19 (UTC)
  • 03-12-2021 18:51:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.982, 13.141 at 14 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
Ussita MC 4 444 444
Acquacanina MC 6 121 565
Fiastra MC 6 559 1124
Visso MC 7 1107 2231
Bolognola MC 7 142 2373
Fiordimonte MC 8 202 2575
Castelsantangelo sul Nera MC 10 281 2856
Pievebovigliana MC 10 866 3722
Pieve Torina MC 10 1458 5180
Monte Cavallo MC 11 145 5325
Muccia MC 14 915 6240
Preci PG 14 724 6964
Sarnano MC 15 3264 10228
Montefortino FM 17 1178 11406
Cessapalombo MC 17 512 11918
Amandola FM 18 3629 15547
Montemonaco AP 18 604 16151
Camerino MC 18 6974 23125
Serravalle di Chienti MC 18 1070 24195
Gualdo MC 19 815 25010
Caldarola MC 19 1823 26833
Camporotondo di Fiastrone MC 20 563 27396

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
58 Km NW of Teramo (54892 inhabitants)
62 Km NE of Terni (111501 inhabitants)
63 Km E of Perugia (166134 inhabitants)
73 Km N of L'Aquila (69753 inhabitants)
77 Km SW of Ancona (100861 inhabitants)
96 Km S of Fano (60888 inhabitants)
97 Km NW of Montesilvano (53738 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 1.5 2021-12-03
17:51:19
42.9815 13.1408 14 2021-12-03
18:03:04
Sala Sismica INGV-Roma 98099881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-03 17:51:19 ± 0.08
Latitude 42.9815 ± 0.0036
Longitude 13.1408 ± 0.0037
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98099881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 345
Semi-minor axis of confidence ellipse (meter) 334
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 213
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.06745
Epicentral distance of station farthest from the epicenter (degree) 0.61514
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 98099881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-03 18:03:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FRON.EHZ. 2021-12-03T17:51:42.24 0.1 undecidable manual P 0.6151 1.081 0
IV.MF5.EHZ. 2021-12-03T17:51:29.10 0.3 undecidable manual S 88 0.2329 102 0.18 70
IV.MML1.EHZ. 2021-12-03T17:51:27.50 0.3 undecidable manual S 317 0.1808 109 0.08 73
IV.GUMA.HHZ. 2021-12-03T17:51:27.00 0.3 undecidable manual S 60 0.1637 113 0.05 73
IV.CESI.HHZ. 2021-12-03T17:51:27.36 0.3 undecidable manual S 278 0.1745 110 0.12 73
IV.NRCA.HHZ. 2021-12-03T17:51:26.32 0.3 undecidable manual S 187 0.1493 116 -0.24 71
IV.SNTG.HHZ. 2021-12-03T17:51:26.21 0.1 undecidable manual P 332 0.3103 98 -0.01 96
IV.MC2.EHZ. 2021-12-03T17:51:25.15 0.3 undecidable manual S 153 0.0782 140 0.25 72
IV.MF5.EHZ. 2021-12-03T17:51:24.81 0.1 negative manual P 88 0.2329 102 -0.12 96
IV.FDMO.HHZ. 2021-12-03T17:51:24.60 0.3 undecidable manual S 325 0.0674 145 -0.1 74
IV.MML1.EHZ. 2021-12-03T17:51:24.07 0.1 undecidable manual P 317 0.1808 109 0.01 99
IV.CESI.HHZ. 2021-12-03T17:51:24.07 0.1 undecidable manual P 278 0.1745 110 0.11 97
IV.NRCA.HHZ. 2021-12-03T17:51:23.39 0.1 undecidable manual P 187 0.1493 116 -0.17 96
IV.GUMA.HHZ. 2021-12-03T17:51:23.62 0.1 undecidable manual P 60 0.1637 113 -0.17 97
IV.MC2.EHZ. 2021-12-03T17:51:22.68 0.1 positive manual P 153 0.0782 140 0.08 99
IV.FDMO.HHZ. 2021-12-03T17:51:22.45 0.1 undecidable manual P 325 0.0674 145 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.2 0.0001775 1.1 AML other m 2021-12-03T17:51:25.04
IV.FDMO.HHN. ML:1.4 0.000255 0.2 AML other m 2021-12-03T17:51:25.23
IV.MC2.EHE. ML:1.9 0.000873 0.16 AML other m 2021-12-03T17:51:25.27
IV.MC2.EHN. ML:1.8 0.0006715 0.26 AML other m 2021-12-03T17:51:26.37
IV.NRCA.HHE. ML:1.6 0.000272 0.34 AML other m 2021-12-03T17:51:26.52
IV.NRCA.HHN. ML:1.4 0.0002155 0.16 AML other m 2021-12-03T17:51:28.12
IV.CESI.HHN. ML:1.3 0.0001445 0.38 AML other m 2021-12-03T17:51:28.41
IV.CESI.HHE. ML:1.3 0.0001341 0.94 AML other m 2021-12-03T17:51:28.13
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