Earthquake with magnitude of ML 1.4 on date 22-02-2021 and time 11:12:51 (Italy) in region 4 km NW Campotosto (AQ)

A magnitude ML 1.4 earthquake occured in region: 4 km NW Campotosto (AQ), on

  • 22-02-2021 10:12:51 (UTC)
  • 22-02-2021 11:12:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.58, 13.34 at 13 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
Campotosto AQ 4 542 542
Amatrice RI 6 2657 3199
Capitignano AQ 8 665 3864
Montereale AQ 10 2581 6445
Crognaleto TE 13 1297 7742
Accumoli RI 14 667 8409
Cortino TE 15 656 9065
Cittareale RI 15 482 9547
Barete AQ 15 737 10284
Cagnano Amiterno AQ 17 1369 11653
Pizzoli AQ 17 4326 15979
Fano Adriano TE 17 296 16275
Borbona RI 18 617 16892
Pietracamela TE 19 271 17163
Rocca Santa Maria TE 19 537 17700

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km N of L'Aquila (69753 inhabitants)
31 Km W of Teramo (54892 inhabitants)
56 Km E of Terni (111501 inhabitants)
66 Km SE of Foligno (57155 inhabitants)
67 Km W of Montesilvano (53738 inhabitants)
73 Km W of Chieti (51815 inhabitants)
73 Km W of Pescara (121014 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km SE of Perugia (166134 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 1.4 2021-02-22
10:12:51
42.58 13.34 13 2021-02-22
10:17:29
Sala Sismica INGV-Roma 87375321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-22 10:12:51 ± 0.08
Latitude 42.58 ± 0.00
Longitude 13.34 ± 0.00
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87375321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 419
Semi-minor axis of confidence ellipse (meter) 180
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 27
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) 98
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.51621
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 87375321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-22 10:17:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATMI.HHZ. 2021-02-22T10:13:12.05 3.0 negative manual P 0.32 0
IV.CSP1.EHZ. 2021-02-22T10:13:09.13 0.1 undecidable manual S 349 0.5162 93 0.07 90
IV.VCEL.EHZ. 2021-02-22T10:13:07.13 0.3 undecidable manual S 117 0.4182 94 0.97 55
IV.GAVE.EHZ. 2021-02-22T10:13:03.96 0.3 undecidable manual S 288 0.3417 95 0.05 71
IV.NRCA.HHZ. 2021-02-22T10:13:02.64 0.1 undecidable manual S 327 0.2968 96 0.04 94
IV.CSP1.EHZ. 2021-02-22T10:13:01.72 1.0 positive manual P 349 0.5162 93 0.17 22
IV.LNSS.HHZ. 2021-02-22T10:13:00.31 0.3 undecidable manual S 275 0.2176 101 0.03 73
IV.VCEL.EHZ. 2021-02-22T10:12:59.92 0.3 undecidable manual P 117 0.4182 94 0.04 70
IV.TERO.HHZ. 2021-02-22T10:12:59.45 0.1 undecidable manual S 79 0.2005 103 -0.33 91
IV.MTRA.EHZ. 2021-02-22T10:12:58.98 0.3 undecidable manual S 15 0.1781 107 -0.14 73
IV.GAVE.EHZ. 2021-02-22T10:12:58.46 0.1 positive manual P 288 0.3417 95 -0.12 93
IV.MF5.EHZ. 2021-02-22T10:12:58.85 1.0 positive manual P 13 0.4128 94 -0.95 18
IV.MC2.EHZ. 2021-02-22T10:12:58.78 0.3 undecidable manual P 342 0.3435 95 0.16 69
IV.RM33.EHZ. 2021-02-22T10:12:57.28 0.3 undecidable manual S 230 0.1169 123 -0.19 71
IV.NRCA.HHZ. 2021-02-22T10:12:57.80 0.1 positive manual P 327 0.2968 96 -0.02 96
IV.SMA1.EHZ. 2021-02-22T10:12:56.08 0.1 undecidable manual S 360 0.0459 154 0.02 100
IV.CAMP.HHZ. 2021-02-22T10:12:56.28 0.1 undecidable manual S 132 0.0728 141 -0.21 95
IV.LNSS.HHZ. 2021-02-22T10:12:56.49 0.1 undecidable manual P 275 0.2176 101 0 97
IV.TERO.HHZ. 2021-02-22T10:12:56.12 0.1 undecidable manual P 79 0.2005 103 -0.08 96
IV.MTRA.EHZ. 2021-02-22T10:12:55.80 0.1 undecidable manual P 15 0.1781 107 -0.01 98
IV.RM33.EHZ. 2021-02-22T10:12:54.85 0.3 positive manual P 230 0.1169 123 -0.01 74
IV.SMA1.EHZ. 2021-02-22T10:12:54.27 0.1 negative manual P 360 0.0459 154 0.22 97
IV.CAMP.HHZ. 2021-02-22T10:12:54.32 0.1 negative manual P 132 0.0728 141 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHN. ML:1.2 0.000182 0.2 AML other m 2021-02-22T10:12:56.44
IV.CAMP.HHE. ML:1.1 0.000136 0.48 AML other m 2021-02-22T10:12:56.31
IV.SMA1.EHN. ML:1.3 0.0002435 0.92 AML other m 2021-02-22T10:12:56.28
IV.RM33.EHE. ML:1.5 0.0002855 0.3 AML other m 2021-02-22T10:12:57.52
IV.RM33.EHN. ML:1.4 0.000205 0.44 AML other m 2021-02-22T10:12:57.64
IV.MTRA.EHE. ML:1.6 0.0002775 0.42 AML other m 2021-02-22T10:12:59.23
IV.MTRA.EHN. ML:1.6 0.0002445 0.46 AML other m 2021-02-22T10:12:59.27
IV.LNSS.HHN. ML:1.5 0.0001675 0.14 AML other m 2021-02-22T10:13:00.49
IV.LNSS.HHE. ML:1.6 0.000223 0.38 AML other m 2021-02-22T10:13:01.24
IV.SMA1.EHE. ML:1.1 0.0001735 0.18 AML other m 2021-02-22T10:13:02.76
IV.NRCA.HHN. ML:1.4 0.00010295 0.08 AML other m 2021-02-22T10:13:02.75
IV.NRCA.HHE. ML:1.5 0.0001425 1 AML other m 2021-02-22T10:13:03.78
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