Earthquake with magnitude of ML 1.5 on date 26-11-2021 and time 04:16:40 (Italy) in region 3 km N Ussita (MC)

A magnitude ML 1.5 earthquake occured in region: 3 km N Ussita (MC), on

  • 26-11-2021 03:16:40 (UTC)
  • 26-11-2021 04:16:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.971, 13.132 at 10 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 3 444 444
Visso MC 6 1107 1551
Acquacanina MC 8 121 1672
Fiastra MC 8 559 2231
Fiordimonte MC 8 202 2433
Bolognola MC 8 142 2575
Castelsantangelo sul Nera MC 9 281 2856
Pieve Torina MC 11 1458 4314
Pievebovigliana MC 11 866 5180
Monte Cavallo MC 11 145 5325
Preci PG 13 724 6049
Muccia MC 14 915 6964
Sarnano MC 16 3264 10228
Montefortino FM 17 1178 11406
Montemonaco AP 18 604 12010
Amandola FM 18 3629 15639
Serravalle di Chienti MC 18 1070 16709
Cessapalombo MC 19 512 17221
Sellano PG 19 1079 18300
Camerino MC 19 6974 25274
Norcia PG 20 4957 30231

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
58 Km NW of Teramo (54892 inhabitants)
60 Km NE of Terni (111501 inhabitants)
62 Km E of Perugia (166134 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
97 Km NW of Montesilvano (53738 inhabitants)
98 Km S of Fano (60888 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 2021-11-26
03:16:40
42.9707 13.1315 10 2021-11-26
03:26:24
Sala Sismica INGV-Roma 97801361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-26 03:16:40 ± 0.09
Latitude 42.9707 ± 0.0045
Longitude 13.1315 ± 0.0049
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97801361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 422
Semi-minor axis of confidence ellipse (meter) 411
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 238
Circular confidence region, given by single value of horizontal uncertainty (meter) 420
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.07285
Epicentral distance of station farthest from the epicenter (degree) 0.35074
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 0.5
Num. used stations 8
Type of magnitude ML
Reference to an origin 97801361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-26 03:26:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MNTT.EHZ. 2021-11-26T03:16:53.88 0.1 undecidable manual S 75 0.3507 50 -0.14 95
IV.MF5.EHZ. 2021-11-26T03:16:51.15 0.1 undecidable manual S 86 0.2401 110 0.5 85
IV.MNTT.EHZ. 2021-11-26T03:16:48.50 1.0 negative manual P 75 0.3507 50 0.06 23
IV.CESI.HHZ. 2021-11-26T03:16:48.62 0.1 undecidable manual S 282 0.1691 117 0.49 88
IV.MMO1.EHZ. 2021-11-26T03:16:47.66 0.1 undecidable manual S 116 0.1601 118 -0.14 95
IV.NRCA.HHZ. 2021-11-26T03:16:46.91 0.1 undecidable manual S 185 0.1376 122 -0.15 97
IV.MF5.EHZ. 2021-11-26T03:16:46.46 1.0 negative manual P 86 0.2401 110 -0.03 24
IV.CSP1.EHZ. 2021-11-26T03:16:46.92 0.1 undecidable manual S 24 0.1322 123 0.03 99
IV.FDMO.HHZ. 2021-11-26T03:16:45.12 0.1 undecidable manual S 334 0.0728 140 -0.04 99
IV.MC2.EHZ. 2021-11-26T03:16:45.62 0.1 undecidable manual S 145 0.0728 140 0.48 94
IT.MTCL.HGZ. 2021-11-26T03:16:45.80 0.1 undecidable manual S 284 0.0989 131 -0.07 100
IV.CSP1.EHZ. 2021-11-26T03:16:44.17 0.1 negative manual P 24 0.1322 123 -0.15 97
IV.NRCA.HHZ. 2021-11-26T03:16:44.26 0.1 negative manual P 185 0.1376 122 -0.16 98
IV.MMO1.EHZ. 2021-11-26T03:16:44.64 0.1 negative manual P 116 0.1601 118 -0.2 96
IV.CESI.HHZ. 2021-11-26T03:16:44.79 0.1 positive manual P 282 0.1691 117 -0.25 96
IV.FDMO.HHZ. 2021-11-26T03:16:43.16 1.0 undecidable manual P 334 0.0728 140 -0.16 25
IV.MC2.EHZ. 2021-11-26T03:16:43.46 0.6 undecidable manual P 145 0.0728 140 0.15 50
IT.MTCL.HGZ. 2021-11-26T03:16:43.64 0.1 negative manual P 284 0.0989 131 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.2 0.0002275 0.22 AML other m 2021-11-26T03:16:45.22
IV.FDMO.HHN. ML:1.4 0.000377 0.14 AML other m 2021-11-26T03:16:45.36
IT.MTCL.HGN. ML:3.2 0.0185 0.08 AML other m 2021-11-26T03:16:45.95
IT.MTCL.HGE. ML:3.2 0.01935 0.1 AML other m 2021-11-26T03:16:46.25
IV.NRCA.HHE. ML:1.4 0.000249 1.12 AML other m 2021-11-26T03:16:47.08
IV.NRCA.HHN. ML:1.4 0.000217 0.86 AML other m 2021-11-26T03:16:47.96
IV.MMO1.EHE. ML:1.5 0.0002925 0.12 AML other m 2021-11-26T03:16:47.68
IV.MMO1.EHN. ML:1.4 0.0002225 1.44 AML other m 2021-11-26T03:16:48.12
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