Earthquake with magnitude of ML 1.7 on date 21-01-2021 and time 23:13:47 (UTC) in region 2 km S Pacentro (AQ)

A magnitude ML 1.7 earthquake occured in region: 2 km S Pacentro (AQ), on

  • 21-01-2021 23:13:47 (UTC)
  • 22-01-2021 00:13:47 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.03, 14 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
Pacentro AQ 2 1174 1174
Cansano AQ 3 274 1448
Campo di Giove AQ 5 803 2251
Sulmona AQ 6 24557 26808
Pettorano sul Gizio AQ 7 1376 28184
Introdacqua AQ 9 2126 30310
Sant'Eufemia a Maiella PE 11 278 30588
Rocca Pia AQ 11 178 30766
Bugnara AQ 12 1125 31891
Pratola Peligna AQ 13 7577 39468
Palena CH 13 1392 40860
Roccacasale AQ 14 693 41553
Lettopalena CH 14 358 41911
Prezza AQ 14 945 42856
Caramanico Terme PE 14 1929 44785
Taranta Peligna CH 14 376 45161
Lama dei Peligni CH 16 1271 46432
Corfinio AQ 16 1051 47483
Anversa degli Abruzzi AQ 17 341 47824
Salle PE 17 308 48132
Pescocostanzo AQ 17 1128 49260
Villalago AQ 17 568 49828
Colledimacine CH 17 202 50030
Scanno AQ 17 1847 51877
Raiano AQ 18 2815 54692
Vittorito AQ 18 873 55565
Cocullo AQ 18 230 55795
Fara San Martino CH 18 1414 57209
Rivisondoli AQ 19 700 57909
Civitella Messer Raimondo CH 19 848 58757
Goriano Sicoli AQ 19 569 59326

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SW of Chieti (51815 inhabitants)
51 Km SW of Pescara (121014 inhabitants)
55 Km S of Montesilvano (53738 inhabitants)
61 Km SE of L'Aquila (69753 inhabitants)
74 Km SE of Teramo (54892 inhabitants)
99 Km E of Tivoli (56533 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 1.7 2021-01-21
23:13:47
42.03 14 10 2021-01-21
23:21:58
Sala Sismica INGV-Roma 86442091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-21 23:13:47 ± 0.06
Latitude 42.03 ± 0.00
Longitude 14.00 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86442091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 425
Semi-minor axis of confidence ellipse (meter) 318
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 52
Circular confidence region, given by single value of horizontal uncertainty (meter) 430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 102
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.49193
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:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 86442091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-21 23:21:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LRP.EHZ. 2021-01-21T23:14:04.94 0.3 undecidable manual S 219 0.4919 50 0 71
IV.MIDA.HHZ. 2021-01-21T23:14:03.34 0.6 undecidable manual S 154 0.4344 50 0.12 47
IV.VCEL.EHE. 2021-01-21T23:14:02.04 0.6 undecidable manual S 342 0.3804 50 0.4 44
IV.POFI.HHZ. 2021-01-21T23:14:01.31 0.6 undecidable manual S 214 0.3795 50 -0.31 45
IV.FAGN.HHZ. 2021-01-21T23:14:01.89 0.6 undecidable manual S 307 0.3858 50 0.1 47
IV.RNI2.HHZ. 2021-01-21T23:14:01.10 0.3 undecidable manual S 161 0.348 50 0.42 67
IV.PTRJ.HNZ. 2021-01-21T23:14:00.70 3.0 undecidable manual P -2.41 0
IV.VVLD.HHZ. 2021-01-21T23:13:59.91 0.6 undecidable manual S 240 0.3229 50 -0.02 49
IT.OPI.HGN. 2021-01-21T23:13:58.54 0.3 undecidable manual S 206 0.2842 50 -0.26 70
IV.LRP.EHZ. 2021-01-21T23:13:57.47 0.1 undecidable manual P 219 0.4919 50 -0.18 91
IV.T0110.HHZ. 2021-01-21T23:13:57.75 0.6 undecidable manual S 320 0.2563 50 -0.22 47
IV.MIDA.HHZ. 2021-01-21T23:13:56.71 0.3 positive manual P 154 0.4344 50 0.05 71
IV.RNI2.HHZ. 2021-01-21T23:13:55.62 0.1 undecidable manual P 161 0.348 50 0.43 89
IV.VCEL.EHE. 2021-01-21T23:13:55.76 0.1 undecidable manual P 342 0.3804 50 0.02 96
IV.POFI.HHZ. 2021-01-21T23:13:55.50 0.6 negative manual P 214 0.3795 50 -0.23 46
IV.FAGN.HHZ. 2021-01-21T23:13:55.53 0.6 positive manual P 307 0.3858 50 -0.3 45
IV.VVLD.HHZ. 2021-01-21T23:13:54.49 1.0 negative manual P 240 0.3229 50 -0.26 23
IV.T0110.HHZ. 2021-01-21T23:13:53.47 0.6 negative manual P 320 0.2563 50 -0.16 48
IT.OPI.HGN. 2021-01-21T23:13:53.99 0.1 undecidable manual P 206 0.2842 50 -0.11 96
IV.LPEL.HHZ. 2021-01-21T23:13:53.54 0.3 undecidable manual S 84 0.1385 123 -0.52 68
IV.INTR.HNE. 2021-01-21T23:13:52.16 0.6 undecidable manual S 253 0.0728 141 -0.01 51
IT.SULP.HGZ. 2021-01-21T23:13:52.17 0.6 undecidable manual S 315 0.0746 141 -0.04 51
IT.SULC.HNZ. 2021-01-21T23:13:52.07 0.6 undecidable manual S 298 0.0755 140 -0.16 50
IT.SULA.HNN. 2021-01-21T23:13:52.40 0.6 undecidable manual S 304 0.0728 141 0.22 49
IV.LPEL.HHZ. 2021-01-21T23:13:51.29 1.0 undecidable manual P 84 0.1385 123 -0.08 25
IT.SULA.HNN. 2021-01-21T23:13:50.42 0.1 undecidable manual P 304 0.0728 141 0.14 100
IV.INTR.HNE. 2021-01-21T23:13:50.43 0.1 undecidable manual P 253 0.0728 141 0.16 99
IT.SULP.HGZ. 2021-01-21T23:13:50.33 0.6 positive manual P 315 0.0746 141 0.03 51
IT.SULC.HNZ. 2021-01-21T23:13:50.44 0.1 undecidable manual P 298 0.0755 140 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LPEL.HNE. ML:1.7 0.000499 1.44 AML other m 2021-01-21T23:13:53.92
IV.LPEL.HHE. ML:1.8 0.000574 0.76 AML other m 2021-01-21T23:13:53.92
IV.LPEL.HNN. ML:1.8 0.00055 0.36 AML other m 2021-01-21T23:13:53.93
IV.LPEL.HHN. ML:1.8 0.0005755 0.36 AML other m 2021-01-21T23:13:53.76
IV.VVLD.HHE. ML:1.4 9.505E-5 1.52 AML other m 2021-01-21T23:14:00.00
IV.T0110.HHN. ML:1.6 0.00022 0.38 AML other m 2021-01-21T23:14:01.38
IV.T0110.HHE. ML:1.6 0.000204 0.26 AML other m 2021-01-21T23:14:02.39
IV.VVLD.HHN. ML:1.3 8.05E-5 1.26 AML other m 2021-01-21T23:14:03.13
IV.RNI2.HHE. ML:1.8 0.0002345 0.42 AML other m 2021-01-21T23:14:03.24
IV.RNI2.HNN. ML:1.8 0.0002055 0.58 AML other m 2021-01-21T23:14:03.38
IV.RNI2.HHN. ML:1.8 0.0002255 0.58 AML other m 2021-01-21T23:14:03.38
IV.POFI.HHE. ML:1.3 7.14E-5 0.6 AML other m 2021-01-21T23:14:04.37
IV.MIDA.HHN. ML:1.9 0.000216 0.4 AML other m 2021-01-21T23:14:04.37
IV.RNI2.HNE. ML:1.8 0.000218 0.4 AML other m 2021-01-21T23:14:04.24
IV.MIDA.HHE. ML:1.8 0.0001695 0.3 AML other m 2021-01-21T23:14:04.33
IV.FAGN.HHE. ML:1.5 0.00010695 0.5 AML other m 2021-01-21T23:14:05.29
IV.POFI.HHN. ML:1.3 5.775E-5 0.88 AML other m 2021-01-21T23:14:05.51
IV.FAGN.HHN. ML:1.6 0.0001195 0.42 AML other m 2021-01-21T23:14:08.67
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