Earthquake with magnitude of ML 1.3 on date 07-11-2021 and time 02:48:18 (Italy) in region 5 km N Acquasanta Terme (AP)

A magnitude ML 1.3 earthquake occured in region: 5 km N Acquasanta Terme (AP), on

  • 07-11-2021 01:48:18 (UTC)
  • 07-11-2021 02:48:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.816, 13.405 at 22 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
Acquasanta Terme AP 5 2916 2916
Montegallo AP 7 523 3439
Roccafluvione AP 8 2010 5449
Arquata del Tronto AP 10 1178 6627
Palmiano AP 10 196 6823
Venarotta AP 10 2066 8889
Montemonaco AP 11 604 9493
Valle Castellana TE 12 977 10470
Ascoli Piceno AP 15 49407 59877
Montefortino FM 15 1178 61055
Comunanza AP 16 3166 64221
Rocca Santa Maria TE 18 537 64758
Force AP 18 1354 66112
Accumoli RI 19 667 66779
Folignano AP 19 9241 76020
Amandola FM 19 3629 79649
Montefalcone Appennino FM 20 424 80073

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of Teramo (54892 inhabitants)
52 Km N of L'Aquila (69753 inhabitants)
59 Km E of Foligno (57155 inhabitants)
68 Km E of Terni (111501 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
77 Km NW of Pescara (121014 inhabitants)
81 Km NW of Chieti (51815 inhabitants)
89 Km E of Perugia (166134 inhabitants)
90 Km S of Ancona (100861 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 1.3 2021-11-07
01:48:18
42.8163 13.4052 22 2021-11-07
01:52:01
Sala Sismica INGV-Roma 97308461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-07 01:48:18 ± 0.1
Latitude 42.8163 ± 0.0027
Longitude 13.4052 ± 0.0049
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97308461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 422
Semi-minor axis of confidence ellipse (meter) 160
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
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) 130
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 24
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) 0.41189
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 97308461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-07 01:52:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PP3.EHZ. 2021-11-07T01:48:40.50 3.0 undecidable manual S 0.14 0
IV.GAVE.EHZ. 2021-11-07T01:48:34.71 3.0 undecidable manual S 1.38 0
IV.CESI.HHZ. 2021-11-07T01:48:33.78 0.6 undecidable manual S 297 0.4119 108 0.23 46
IV.LNSS.HHZ. 2021-11-07T01:48:31.94 0.6 undecidable manual S 232 0.3426 112 0.33 46
IV.RM33.EHZ. 2021-11-07T01:48:31.71 0.6 undecidable manual S 205 0.3372 112 0.23 47
IV.FDMO.HHZ. 2021-11-07T01:48:30.90 0.6 undecidable manual S 314 0.3202 114 -0.1 48
IV.CSP1.EHZ. 2021-11-07T01:48:30.83 0.6 undecidable manual S 332 0.3121 114 0.06 48
IV.TERO.HHZ. 2021-11-07T01:48:29.14 0.6 undecidable manual S 143 0.2428 122 0.19 48
IV.NRCA.HHZ. 2021-11-07T01:48:28.25 0.6 undecidable manual S 275 0.214 126 0 50
IV.MC2.EHZ. 2021-11-07T01:48:27.74 0.6 undecidable manual S 301 0.1844 131 0.17 49
IV.MF5.EHZ. 2021-11-07T01:48:27.88 0.6 undecidable manual S 13 0.1763 132 0.5 44
IV.SMA1.EHZ. 2021-11-07T01:48:27.53 0.6 undecidable manual S 195 0.1925 129 -0.22 48
IV.CESI.HHZ. 2021-11-07T01:48:27.06 0.6 positive manual P 297 0.4119 108 -0.1 47
IV.LNSS.HHZ. 2021-11-07T01:48:26.03 0.6 undecidable manual P 232 0.3426 112 -0.01 49
IV.MTRA.EHZ. 2021-11-07T01:48:25.36 0.6 undecidable manual S 186 0.0603 161 -0.08 51
IV.CSP1.EHZ. 2021-11-07T01:48:25.37 0.6 undecidable manual P 332 0.3121 114 -0.19 48
IV.MMO1.EHZ. 2021-11-07T01:48:25.74 0.6 undecidable manual S 325 0.1007 149 -0.22 50
IV.RM33.EHZ. 2021-11-07T01:48:25.94 1.0 positive manual P 205 0.3372 112 -0.02 24
IV.FDMO.HHZ. 2021-11-07T01:48:25.42 0.6 negative manual P 314 0.3202 114 -0.27 47
IV.MNTT.EHZ. 2021-11-07T01:48:25.73 3.0 undecidable manual P 0.14 0
IV.TERO.HHZ. 2021-11-07T01:48:24.44 1.0 undecidable manual P 143 0.2428 122 -0.07 25
IV.SMA1.EHZ. 2021-11-07T01:48:23.76 0.6 undecidable manual P 195 0.1925 129 -0.05 50
IV.MC2.EHZ. 2021-11-07T01:48:23.79 0.1 negative manual P 301 0.1844 131 0.08 99
IV.NRCA.HHZ. 2021-11-07T01:48:23.97 0.1 undecidable manual P 275 0.214 126 -0.13 98
IV.MF5.EHZ. 2021-11-07T01:48:23.74 0.6 positive manual P 13 0.1763 132 0.14 49
IV.MTRA.EHZ. 2021-11-07T01:48:22.41 0.3 positive manual P 186 0.0603 161 -0.07 77
IV.MMO1.EHZ. 2021-11-07T01:48:22.61 0.1 negative manual P 325 0.1007 149 -0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.4 0.000168 0.16 AML other m 2021-11-07T01:48:25.48
IV.MTRA.EHN. ML:1.3 0.0001345 0.16 AML other m 2021-11-07T01:48:25.53
IV.SMA1.EHN. ML:1 5.225E-5 0.1 AML other m 2021-11-07T01:48:27.92
IV.SMA1.EHE. ML:1.1 6.66E-5 0.62 AML other m 2021-11-07T01:48:27.92
IV.NRCA.HHE. ML:1.5 0.0001435 0.1 AML other m 2021-11-07T01:48:28.70
IV.NRCA.HHN. ML:1.5 0.0001565 0.64 AML other m 2021-11-07T01:48:28.47
IV.FDMO.HHN. ML:1.2 4.885E-5 0.16 AML other m 2021-11-07T01:48:31.32
IV.FDMO.HHE. ML:1.1 3.75E-5 0.76 AML other m 2021-11-07T01:48:32.10
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