Earthquake with magnitude of ML 1.5 on date 27-07-2021 and time 05:45:11 (Italy) in region 5 km W Campotosto (AQ)

A magnitude ML 1.5 earthquake occured in region: 5 km W Campotosto (AQ), on

  • 27-07-2021 03:45:11 (UTC)
  • 27-07-2021 05:45:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.572, 13.313 at 12 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 5 542 542
Capitignano AQ 6 665 1207
Amatrice RI 7 2657 3864
Montereale AQ 8 2581 6445
Cittareale RI 14 482 6927
Barete AQ 14 737 7664
Crognaleto TE 14 1297 8961
Cagnano Amiterno AQ 14 1369 10330
Accumoli RI 15 667 10997
Pizzoli AQ 15 4326 15323
Borbona RI 16 617 15940
Cortino TE 17 656 16596
Posta RI 18 694 17290
Fano Adriano TE 19 296 17586

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km N of L'Aquila (69753 inhabitants)
34 Km W of Teramo (54892 inhabitants)
55 Km E of Terni (111501 inhabitants)
66 Km SE of Foligno (57155 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
74 Km W of Chieti (51815 inhabitants)
75 Km W of Pescara (121014 inhabitants)
80 Km NE of Guidonia Montecelio (88673 inhabitants)
80 Km NE of Tivoli (56533 inhabitants)
96 Km SE of Perugia (166134 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 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 2021-07-27
03:45:11
42.5722 13.3128 12 2021-07-27
03:51:40
Sala Sismica INGV-Roma 93257281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-27 03:45:11 ± 0.07
Latitude 42.5722 ± 0.0045
Longitude 13.3128 ± 0.0049
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93257281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 538
Semi-minor axis of confidence ellipse (meter) 213
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 186
Circular confidence region, given by single value of horizontal uncertainty (meter) 540
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.49283
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 93257281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-27 03:51:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PTRJ.HHZ. 2021-07-27T03:45:57.90 3.0 undecidable manual Sn -0.01 0
IX.NSC3.EHZ.02 2021-07-27T03:45:48.97 3.0 undecidable manual Pn 2.17 0
IV.SSFR.HNZ. 2021-07-27T03:45:43.26 3.0 undecidable manual S -0.6 0
IV.TST02.HHZ. 2021-07-27T03:45:31.13 3.0 undecidable manual P 0.8 0
IV.MMUR.HNZ. 2021-07-27T03:45:29.73 3.0 undecidable manual P 0.83 0
IV.ARRO.EHZ. 2021-07-27T03:45:26.07 0.6 undecidable manual S 271 0.4029 92 0.27 46
IV.MC2.EHZ. 2021-07-27T03:45:24.79 0.3 undecidable manual S 345 0.3507 93 0.53 65
IV.GAVE.EHZ. 2021-07-27T03:45:23.47 0.6 undecidable manual S 291 0.3301 93 -0.19 47
IV.NRCA.HHZ. 2021-07-27T03:45:22.50 0.6 undecidable manual S 331 0.2995 94 -0.23 47
IV.FDMO.HHZ. 2021-07-27T03:45:21.15 1.0 undecidable manual P 340 0.4928 92 -0.1 23
IV.T0110.HHZ. 2021-07-27T03:45:21.09 3.0 negative manual P -0.39 0
IV.TERO.HHZ. 2021-07-27T03:45:20.07 0.6 undecidable manual S 77 0.2203 96 -0.32 47
IV.VCEL.EHZ. 2021-07-27T03:45:20.58 3.0 undecidable manual P 0.1 0
IV.GIGS.HHZ. 2021-07-27T03:45:20.31 0.6 undecidable manual S 122 0.2257 96 -0.24 48
IV.ARRO.EHZ. 2021-07-27T03:45:19.40 0.1 undecidable manual P 271 0.4029 92 -0.31 90
IV.MC2.EHZ. 2021-07-27T03:45:19.35 0.1 undecidable manual P 345 0.3507 93 0.52 87
IV.MTRA.EHZ. 2021-07-27T03:45:19.30 0.6 undecidable manual S 18 0.1943 98 -0.34 47
IV.LNSS.HHZ. 2021-07-27T03:45:19.81 0.6 undecidable manual S 279 0.2032 98 -0.08 49
IV.GAVE.EHZ. 2021-07-27T03:45:18.22 0.1 undecidable manual P 291 0.3301 93 -0.25 92
IV.NRCA.HHZ. 2021-07-27T03:45:17.79 0.1 positive manual P 331 0.2995 94 -0.15 95
MN.AQU.HNZ. 2021-07-27T03:45:17.11 0.1 undecidable manual P 163 0.2284 96 0.38 92
IV.SMA1.EHZ. 2021-07-27T03:45:16.32 0.6 undecidable manual S 16 0.0603 143 0.16 50
IV.LNSS.HHZ. 2021-07-27T03:45:16.26 0.1 positive manual P 279 0.2032 98 -0.04 99
IV.T1299.EHN. 2021-07-27T03:45:16.28 0.6 undecidable manual S 340 0.0657 140 0.02 51
IV.RM33.EHZ. 2021-07-27T03:45:16.78 0.6 undecidable manual S 229 0.0962 125 -0.13 49
IV.GIGS.HHZ. 2021-07-27T03:45:16.39 0.1 undecidable manual P 122 0.2257 96 -0.29 94
IV.TERO.HHZ. 2021-07-27T03:45:16.64 0.3 undecidable manual P 77 0.2203 96 0.05 74
IV.CAMP.HHN. 2021-07-27T03:45:16.40 0.6 undecidable manual S 117 0.0791 133 -0.13 50
IV.MTRA.EHZ. 2021-07-27T03:45:16.04 0.1 undecidable manual P 18 0.1943 98 -0.12 98
IV.SMA1.EHZ. 2021-07-27T03:45:14.37 0.1 negative manual P 16 0.0603 143 0.22 98
IV.T1299.EHN. 2021-07-27T03:45:14.36 0.1 undecidable manual P 340 0.0657 140 0.16 100
IV.RM33.EHZ. 2021-07-27T03:45:14.66 0.6 positive manual P 229 0.0962 125 0.08 51
IV.CAMP.HHN. 2021-07-27T03:45:14.49 0.1 undecidable manual P 117 0.0791 133 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.5 0.00038158185 0.1824 AML other m 2021-07-27T03:45:16.97
IV.SMA1.EHE. ML:2 0.001156 0.16 AML other m 2021-07-27T03:45:16.67
IV.RM33.EHN. ML:1.5 0.000336 0.1 AML other m 2021-07-27T03:45:17.02
IV.RM33.HNN. ML:1.5 0.0003351422 0.0896 AML other m 2021-07-27T03:45:17.02
IV.RM33.HNE. ML:1.5 0.00037128815 0.112 AML other m 2021-07-27T03:45:16.00
IV.RM33.EHE. ML:1.5 0.0003430864 0.1216 AML other m 2021-07-27T03:45:17.00
IV.MTRA.EHN. ML:1.6 0.0002835 0.24 AML other m 2021-07-27T03:45:19.36
IV.MTRA.HNN. ML:1.6 0.0002620855 0.1216 AML other m 2021-07-27T03:45:19.36
IV.MTRA.EHE. ML:1.5 0.000192 0.22 AML other m 2021-07-27T03:45:19.83
IV.LNSS.HHN. ML:1.4 0.0001375 0.14 AML other m 2021-07-27T03:45:19.94
IV.LNSS.HHE. ML:1.3 0.00011989055 0.0992 AML other m 2021-07-27T03:45:19.97
IV.MTRA.HNE. ML:1.5 0.0002197059 0.24 AML other m 2021-07-27T03:45:19.83
IV.NRCA.HHN. ML:1.6 0.0001485 0.12 AML other m 2021-07-27T03:45:22.69
IV.NRCA.HHE. ML:1.8 0.0002695 0.16 AML other m 2021-07-27T03:45:22.70
IV.GAVE.EHE. ML:1.2 6.51E-5 1.2 AML other m 2021-07-27T03:45:24.63
IV.LNSS.HNE. ML:1.3 0.000125499275 0.688 AML other m 2021-07-27T03:45:20.27
IV.TERO.HHE. ML:1.2 9.700913E-5 0.0384 AML other m 2021-07-27T03:45:20.24
IV.TERO.HHN. ML:1.4 0.00013608535 0.0384 AML other m 2021-07-27T03:45:20.23
IV.TERO.HNE. ML:1.3 0.00010696835 0.0512 AML other m 2021-07-27T03:45:20.20
IV.TERO.HNN. ML:1.4 0.00012874123 0.0608 AML other m 2021-07-27T03:45:20.24
IV.NRCA.HNE. ML:1.8 0.00025389935 0.16 AML other m 2021-07-27T03:45:22.70
IV.NRCA.HNN. ML:1.5 0.0001454866 0.1376 AML other m 2021-07-27T03:45:22.77
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