Earthquake with magnitude of ML 1.2 on date 29-11-2021 and time 17:36:34 (UTC) in region 4 km W Montegallo (AP)

A magnitude ML 1.2 earthquake occured in region: 4 km W Montegallo (AP), on

  • 29-11-2021 17:36:34 (UTC)
  • 29-11-2021 18:36:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.853, 13.284 at 18 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
Montegallo AP 4 523 523
Montemonaco AP 6 604 1127
Arquata del Tronto AP 9 1178 2305
Montefortino FM 11 1178 3483
Castelsantangelo sul Nera MC 12 281 3764
Acquasanta Terme AP 14 2916 6680
Palmiano AP 15 196 6876
Amandola FM 16 3629 10505
Ussita MC 16 444 10949
Roccafluvione AP 16 2010 12959
Comunanza AP 16 3166 16125
Bolognola MC 17 142 16267
Norcia PG 17 4957 21224
Venarotta AP 17 2066 23290
Accumoli RI 18 667 23957
Visso MC 18 1107 25064

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km NW of Teramo (54892 inhabitants)
49 Km E of Foligno (57155 inhabitants)
57 Km N of L'Aquila (69753 inhabitants)
61 Km NE of Terni (111501 inhabitants)
78 Km E of Perugia (166134 inhabitants)
80 Km W of Montesilvano (53738 inhabitants)
87 Km S of Ancona (100861 inhabitants)
88 Km NW of Pescara (121014 inhabitants)
91 Km NW of Chieti (51815 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 1.2 2021-11-29
17:36:34
42.853 13.2838 18 2021-11-29
17:44:06
Sala Sismica INGV-Roma 97947141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-29 17:36:34 ± 0.13
Latitude 42.8530 ± 0.0054
Longitude 13.2838 ± 0.0061
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97947141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 570
Semi-minor axis of confidence ellipse (meter) 281
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 48
Circular confidence region, given by single value of horizontal uncertainty (meter) 570
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 14
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
Epicentral distance of station farthest from the epicenter (degree) 0.32915
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 97947141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-29 17:44:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.COR1.EHZ. 2021-11-29T17:37:03.61 3.0 undecidable manual S 2.1 0
IV.CRTC.HHZ. 2021-11-29T17:36:51.52 3.0 positive manual P -0.09 0
IV.MTRA.EHZ. 2021-11-29T17:36:42.21 0.3 undecidable manual S 139 0.1268 136 0 74
IV.NRCA.HHZ. 2021-11-29T17:36:42.06 0.3 undecidable manual S 261 0.1259 136 -0.13 74
IV.TERO.HHZ. 2021-11-29T17:36:42.15 1.0 positive manual P 134 0.3292 106 -0.03 24
IV.CESI.HHZ. 2021-11-29T17:36:41.98 1.0 positive manual P 299 0.3166 107 0 24
IV.MC2.EHZ. 2021-11-29T17:36:41.79 0.3 undecidable manual S 310 0.0908 146 0.25 71
IV.CSP1.EHZ. 2021-11-29T17:36:40.72 0.1 undecidable manual P 346 0.2455 114 -0.12 96
IV.MMO1.EHZ. 2021-11-29T17:36:40.88 0.3 undecidable manual S 34 0.0558 158 -0.17 73
IV.SMA1.EHZ. 2021-11-29T17:36:40.59 1.0 negative manual P 170 0.2257 116 0.06 25
IV.MF5.EHZ. 2021-11-29T17:36:40.28 0.6 positive manual P 44 0.1862 122 0.33 47
IV.FDMO.HHZ. 2021-11-29T17:36:40.48 0.1 positive manual P 322 0.2329 115 -0.17 96
IV.NRCA.HHZ. 2021-11-29T17:36:39.15 0.1 undecidable manual P 261 0.1259 136 0.01 100
IV.MTRA.EHZ. 2021-11-29T17:36:39.15 1.0 undecidable manual P 139 0.1268 136 0 25
IV.MMO1.EHZ. 2021-11-29T17:36:38.47 0.3 negative manual P 34 0.0558 158 -0.02 76
IV.MC2.EHZ. 2021-11-29T17:36:38.91 0.1 positive manual P 310 0.0908 146 0.15 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MC2.EHN. ML:1.5 0.000266628495 0.2432 AML other m 2021-11-29T17:36:41.86
IV.NRCA.HHE. ML:1.2 0.000112494785 0.064 AML other m 2021-11-29T17:36:42.23
IV.NRCA.HHN. ML:1.4 0.0001995 0.14 AML other m 2021-11-29T17:36:42.24
IV.MMO1.EHE. ML:1.3 0.0001621138 0.0384 AML other m 2021-11-29T17:36:41.06
IV.MMO1.EHN. ML:1.5 0.00027989015 0.0768 AML other m 2021-11-29T17:36:41.08
IV.MTRA.EHE. ML:1 6.578766E-5 0.1024 AML other m 2021-11-29T17:36:42.89
IV.MTRA.EHN. ML:1 7.048496E-5 0.1536 AML other m 2021-11-29T17:36:42.85
IV.MTRA.HNE. ML:1.1 9.147046E-5 0.4096 AML other m 2021-11-29T17:36:41.69
IV.NRCA.HNE. ML:1.2 0.00010453378 0.1024 AML other m 2021-11-29T17:36:42.85
IV.FDMO.HHE. ML:0.9 4.23122695E-5 0.1792 AML other m 2021-11-29T17:36:44.74
IV.FDMO.HHN. ML:1.1 5.82469E-5 0.2176 AML other m 2021-11-29T17:36:44.84
IV.SMA1.EHE. ML:1.2 7.3474915E-5 0.1152 AML other m 2021-11-29T17:36:45.60
IV.SMA1.EHN. ML:1.4 0.0001200369 0.2176 AML other m 2021-11-29T17:36:44.99
IV.CSP1.EHN. ML:1.5 0.000158485475 45.4016 AML other m 2021-11-29T17:36:40.54
IV.CESI.HHN. ML:1 4.1825975E-5 0.192 AML other m 2021-11-29T17:36:47.67
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