Earthquake with magnitude of ML 1.2 on date 20-02-2021 and time 10:22:37 (UTC) in region 2 km SW Capitignano (AQ)

A magnitude ML 1.2 earthquake occured in region: 2 km SW Capitignano (AQ), on

  • 20-02-2021 10:22:37 (UTC)
  • 20-02-2021 11:22:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.51, 13.28 at 16 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
Capitignano AQ 2 665 665
Montereale AQ 4 2581 3246
Barete AQ 6 737 3983
Cagnano Amiterno AQ 7 1369 5352
Pizzoli AQ 8 4326 9678
Campotosto AQ 9 542 10220
Borbona RI 12 617 10837
Amatrice RI 14 2657 13494
Scoppito AQ 15 3727 17221
Posta RI 15 694 17915
Cittareale RI 16 482 18397
Crognaleto TE 17 1297 19694
Antrodoco RI 19 2588 22282
Micigliano RI 19 127 22409
L'Aquila AQ 20 69753 92162

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of L'Aquila (69753 inhabitants)
39 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
69 Km SE of Foligno (57155 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
72 Km NE of Tivoli (56533 inhabitants)
72 Km NE of Guidonia Montecelio (88673 inhabitants)
75 Km W of Chieti (51815 inhabitants)
77 Km W of Pescara (121014 inhabitants)
95 Km NE of Roma (2864731 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
99 Km SE of Perugia (166134 inhabitants)
100 Km NE of Velletri (53303 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 1.2 2021-02-20
10:22:37
42.51 13.28 16 2021-02-20
10:34:19
Sala Sismica INGV-Roma 87318791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-20 10:22:37 ± 0.12
Latitude 42.51 ± 0.01
Longitude 13.28 ± 0.00
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87318791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 666
Semi-minor axis of confidence ellipse (meter) 413
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 200
Circular confidence region, given by single value of horizontal uncertainty (meter) 670
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 170
Number of associated phases, regardless of their use for origin computation 27
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) 0.34984
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 87318791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-20 10:34:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GIZZ.HHZ. 2021-02-20T10:24:36.00 3.0 undecidable manual Sn -0.59 0
MN.TRI.HHZ. 2021-02-20T10:24:13.66 3.0 undecidable manual Sg 6.57 0
IV.ILOS.HHZ. 2021-02-20T10:23:49.14 3.0 undecidable manual Pn 3.18 0
OT.OT14.EHZ. 2021-02-20T10:23:45.00 3.0 undecidable manual Sg 1.76 0
IV.IMOL.HNZ. 2021-02-20T10:23:41.88 3.0 undecidable manual Sg 0.51 0
ST.PANI.EHZ. 2021-02-20T10:23:39.46 3.0 positive manual Pg 3.34 0
IV.NDIM.HNZ. 2021-02-20T10:23:26.22 3.0 undecidable manual Pn 1.86 0
IV.POFI.HHZ. 2021-02-20T10:22:59.82 3.0 negative manual P 1.21 0
IV.FAGN.HHZ. 2021-02-20T10:22:57.55 3.0 undecidable manual S 0
IV.CESX.HHZ. 2021-02-20T10:22:56.69 3.0 undecidable manual S -0.7 0
IV.CRTC.HHZ. 2021-02-20T10:22:56.54 3.0 undecidable manual P -5.05 0
IV.FAGN.HHZ. 2021-02-20T10:22:54.35 3.0 undecidable manual P 0
IV.NRCA.HHZ. 2021-02-20T10:22:50.02 0.3 undecidable manual S 340 0.3498 100 -0.11 71
IV.TERO.HHZ. 2021-02-20T10:22:47.44 0.3 undecidable manual S 64 0.2653 105 -0.24 71
IV.GIGS.HHN. 2021-02-20T10:22:46.31 0.6 undecidable manual S 104 0.2221 110 -0.14 48
IV.LNSS.HHZ. 2021-02-20T10:22:45.77 0.3 undecidable manual S 299 0.2014 113 -0.14 73
IV.NRCA.HHZ. 2021-02-20T10:22:44.60 0.1 undecidable manual P 340 0.3498 100 -0.06 96
IV.SMA1.EHZ. 2021-02-20T10:22:44.22 0.3 undecidable manual S 18 0.1313 128 0.13 73
IV.TERO.HHZ. 2021-02-20T10:22:43.22 0.1 undecidable manual P 64 0.2653 105 -0.03 98
IV.MF5.EHZ. 2021-02-20T10:22:43.85 3.0 undecidable manual P 0
IV.CAMP.HHZ. 2021-02-20T10:22:43.40 0.3 undecidable manual S 72 0.0989 138 0 76
IV.LNSS.HHZ. 2021-02-20T10:22:42.35 0.1 negative manual P 299 0.2014 113 0.13 98
IV.RM33.EHZ. 2021-02-20T10:22:42.40 0.3 undecidable manual S 274 0.0486 157 -0.19 75
IV.GIGS.HHN. 2021-02-20T10:22:42.49 0.3 undecidable manual P 104 0.2221 110 -0.05 73
IV.SMA1.EHZ. 2021-02-20T10:22:41.37 0.3 undecidable manual P 18 0.1313 128 0.2 73
IV.CAMP.HHZ. 2021-02-20T10:22:40.95 0.1 undecidable manual P 72 0.0989 138 0.17 98
IV.RM33.EHZ. 2021-02-20T10:22:40.46 0.1 negative manual P 274 0.0486 157 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:1.1 0.0001215 0.82 AML other m 2021-02-20T10:22:42.44
IV.RM33.EHE. ML:0.9 9.175E-5 1 AML other m 2021-02-20T10:22:43.16
IV.LNSS.HHE. ML:1.6 0.0002175 1.54 AML other m 2021-02-20T10:22:45.21
IV.LNSS.HHN. ML:1.6 0.0002065 1.88 AML other m 2021-02-20T10:22:46.05
IV.NRCA.HHN. ML:1.1 4.25E-5 0.14 AML other m 2021-02-20T10:22:50.25
IV.NRCA.HHE. ML:1.4 9.585E-5 0.12 AML other m 2021-02-20T10:22:50.36
IV.FAGN.HHN. ML:1.2 6.025E-5 0.06 AML other m 2021-02-20T10:22:57.87
IV.FAGN.HHE. ML:1.7 0.000165 0.06 AML other m 2021-02-20T10:22:57.87
IV.TERO.HHE. ML:0.7 2.4987615E-5 0.0576 AML other m 2021-02-20T10:22:47.95
IV.TERO.HHN. ML:0.6 2.2367315E-5 0.4608 AML other m 2021-02-20T10:22:48.15
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