Earthquake with magnitude of ML 1.5 on date 10-01-2021 and time 01:46:38 (UTC) in region 3 km N Acquasanta Terme (AP)

A magnitude ML 1.5 earthquake occured in region: 3 km N Acquasanta Terme (AP), on

  • 10-01-2021 01:46:38 (UTC)
  • 10-01-2021 02:46:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8, 13.41 at 20 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 3 2916 2916
Montegallo AP 8 523 3439
Roccafluvione AP 9 2010 5449
Arquata del Tronto AP 10 1178 6627
Valle Castellana TE 10 977 7604
Venarotta AP 12 2066 9670
Palmiano AP 12 196 9866
Montemonaco AP 13 604 10470
Ascoli Piceno AP 15 49407 59877
Rocca Santa Maria TE 16 537 60414
Montefortino FM 17 1178 61592
Accumoli RI 18 667 62259
Comunanza AP 18 3166 65425
Folignano AP 19 9241 74666
Force AP 20 1354 76020

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of Teramo (54892 inhabitants)
50 Km N of L'Aquila (69753 inhabitants)
60 Km E of Foligno (57155 inhabitants)
68 Km E of Terni (111501 inhabitants)
68 Km W of Montesilvano (53738 inhabitants)
76 Km NW of Pescara (121014 inhabitants)
80 Km NW of Chieti (51815 inhabitants)
90 Km E of Perugia (166134 inhabitants)
91 Km S of Ancona (100861 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.5 2021-01-10
01:46:38
42.8 13.41 20 2021-01-10
01:54:28
Sala Sismica INGV-Roma 86133041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-10 01:46:38 ± 0.11
Latitude 42.80 ± 0.00
Longitude 13.41 ± 0.01
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86133041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 532
Semi-minor axis of confidence ellipse (meter) 307
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 259
Circular confidence region, given by single value of horizontal uncertainty (meter) 530
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.33455
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 17
Type of magnitude ML
Reference to an origin 86133041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-10 01:54:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MURB.HHZ. 2021-01-10T01:46:54.01 3.0 undecidable manual P 0.28 0
IV.LNSS.HHZ. 2021-01-10T01:46:51.63 0.1 undecidable manual S 234 0.3345 109 0.68 77
IV.CSP1.EHZ. 2021-01-10T01:46:50.91 0.3 undecidable manual S 333 0.3283 110 0.14 69
IV.FDMO.HHZ. 2021-01-10T01:46:50.74 0.3 undecidable manual S 315 0.3336 110 -0.19 68
IV.TERO.HHZ. 2021-01-10T01:46:48.11 0.3 undecidable manual S 141 0.2275 120 0.05 72
IV.CAMP.HHZ. 2021-01-10T01:46:48.99 0.3 undecidable manual S 180 0.2635 116 -0.02 72
IV.NRCA.HHE. 2021-01-10T01:46:47.81 0.3 undecidable manual S 279 0.2185 122 -0.03 72
IV.MC2.EHZ. 2021-01-10T01:46:47.25 0.6 undecidable manual S 305 0.1961 125 -0.03 48
IV.MF5.EHZ. 2021-01-10T01:46:47.62 0.3 undecidable manual S 11 0.1916 126 0.45 68
IV.SMA1.EHZ. 2021-01-10T01:46:46.86 0.3 undecidable manual S 198 0.1772 128 0.02 72
IV.FDMO.HHZ. 2021-01-10T01:46:45.24 0.6 positive manual P 315 0.3336 110 -0.29 45
IV.MMO1.EHZ. 2021-01-10T01:46:45.48 0.1 undecidable manual S 329 0.1169 142 -0.08 97
IV.MNTT.EHZ. 2021-01-10T01:46:45.34 0.6 positive manual P 27 0.2959 113 0.42 44
IV.CSP1.EHZ. 2021-01-10T01:46:45.21 0.6 negative manual P 333 0.3283 110 -0.22 45
IV.LNSS.HHZ. 2021-01-10T01:46:45.43 0.3 positive manual P 234 0.3345 109 -0.11 70
IV.CAMP.HHZ. 2021-01-10T01:46:44.23 0.1 undecidable manual P 180 0.2635 116 -0.19 92
IV.MTRA.EHZ. 2021-01-10T01:46:44.59 0.1 undecidable manual S 192 0.0441 164 0.01 100
IV.GUMA.HNZ. 2021-01-10T01:46:44.55 0.1 undecidable manual P 348 0.268 115 0.06 96
IV.MC2.EHZ. 2021-01-10T01:46:43.44 0.6 undecidable manual P 305 0.1961 125 0.02 48
IV.MF5.EHZ. 2021-01-10T01:46:43.53 0.3 undecidable manual P 11 0.1916 126 0.17 71
IV.NRCA.HHE. 2021-01-10T01:46:43.49 0.1 undecidable manual P 279 0.2185 122 -0.26 92
IV.TERO.HHZ. 2021-01-10T01:46:43.74 0.3 undecidable manual P 141 0.2275 120 -0.13 70
IV.SMA1.EHZ. 2021-01-10T01:46:43.09 0.1 positive manual P 198 0.1772 128 -0.08 96
IV.T1299.EHE. 2021-01-10T01:46:43.35 0.1 undecidable manual P 209 0.1898 126 0.02 97
IV.MMO1.EHZ. 2021-01-10T01:46:42.27 0.1 undecidable manual P 329 0.1169 142 -0.16 95
IV.MTRA.EHZ. 2021-01-10T01:46:41.80 0.1 undecidable manual P 192 0.0441 164 -0.06 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:1.6 0.0002835954 0.18 AML other m 2021-01-10T01:46:44.78
IV.MTRA.EHE. ML:1.5 0.0002421841 0.1 AML other m 2021-01-10T01:46:44.80
IV.MURB.HNE. ML:2.2 0.000179291295 0.2096 AML other m 2021-01-10T01:47:16.37
IV.MURB.HNN. ML:2.1 0.000157187085 0.3008 AML other m 2021-01-10T01:47:07.85
IV.MTRA.HNE. ML:1.5 0.000246865325 0.0904 AML other m 2021-01-10T01:46:44.79
IV.MTRA.HNN. ML:1.6 0.00030382705 0.18 AML other m 2021-01-10T01:46:44.78
IV.SMA1.EHE. ML:0.9 3.84121305E-5 0.1 AML other m 2021-01-10T01:46:47.15
IV.MF5.EHE. ML:1.3 0.00010649585 1.74 AML other m 2021-01-10T01:46:46.43
IV.TERO.HHE. ML:0.6 2.0355555E-5 0.1 AML other m 2021-01-10T01:46:48.22
IV.TERO.HNN. ML:1.7 0.00021742705 1.02 AML other m 2021-01-10T01:46:55.56
IV.CSP1.EHN. ML:1.8 0.00019094309 0.28 AML other m 2021-01-10T01:46:51.35
IV.MNTT.EHE. ML:1.6 0.0001552520255 0.12 AML other m 2021-01-10T01:46:52.28
IV.LNSS.HNN. ML:1.6 0.000137460615 0.78 AML other m 2021-01-10T01:47:00.23
IV.LNSS.HHE. ML:1.2 5.712454E-5 0.12 AML other m 2021-01-10T01:46:52.11
IV.LNSS.HHN. ML:1.1 4.578353E-5 0.16 AML other m 2021-01-10T01:46:51.85
IV.MURB.HHE. ML:1.5 4.0011245E-5 0.56 AML other m 2021-01-10T01:46:57.83
IV.MURB.HHN. ML:1.4 3.1690465E-5 0.2 AML other m 2021-01-10T01:47:04.51
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download