Earthquake with magnitude of ML 1.1 on date 25-05-2021 and time 18:00:44 (UTC) in region 4 km SW Cortino (TE)

A magnitude ML 1.1 earthquake occured in region: 4 km SW Cortino (TE), on

  • 25-05-2021 18:00:44 (UTC)
  • 25-05-2021 20:00:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.606, 13.469 at 11 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
Cortino TE 4 656 656
Crognaleto TE 6 1297 1953
Fano Adriano TE 8 296 2249
Campotosto AQ 10 542 2791
Rocca Santa Maria TE 10 537 3328
Pietracamela TE 12 271 3599
Montorio al Vomano TE 14 8218 11817
Valle Castellana TE 15 977 12794
Amatrice RI 15 2657 15451
Tossicia TE 16 1406 16857
Torricella Sicura TE 16 2641 19498
Capitignano AQ 17 665 20163
Colledara TE 19 2179 22342
Acquasanta Terme AP 19 2916 25258
Isola del Gran Sasso d'Italia TE 20 4773 30031

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km W of Teramo (54892 inhabitants)
29 Km N of L'Aquila (69753 inhabitants)
57 Km W of Montesilvano (53738 inhabitants)
63 Km W of Pescara (121014 inhabitants)
64 Km W of Chieti (51815 inhabitants)
67 Km E of Terni (111501 inhabitants)
74 Km SE of Foligno (57155 inhabitants)
90 Km NE of Tivoli (56533 inhabitants)
91 Km NE of Guidonia Montecelio (88673 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 1.1 2021-05-25
18:00:44
42.606 13.469 11 2021-05-25
18:04:49
Sala Sismica INGV-Roma 90488631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-25 18:00:44 ± 0.05
Latitude 42.6060 ± 0.0036
Longitude 13.4690 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90488631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 506
Semi-minor axis of confidence ellipse (meter) 232
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 39
Circular confidence region, given by single value of horizontal uncertainty (meter) 510
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.52251
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 90488631
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-25 18:04:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.BSSO.HHZ. 2021-05-25T18:01:27.35 3.0 undecidable manual S 0.11 0
IV.IMOL.HNZ. 2021-05-25T18:01:21.89 3.0 positive manual Pn 3.2 0
IV.FDMO.HHZ. 2021-05-25T18:01:02.28 3.0 undecidable manual S 0.24 0
IV.MNTT.EHZ. 2021-05-25T18:00:59.15 3.0 undecidable manual S -0.45 0
IV.FOSV.EHZ. 2021-05-25T18:00:59.42 3.0 undecidable manual P 0
IV.MC2.EHZ. 2021-05-25T18:00:57.87 3.0 undecidable manual S 0.53 0
IV.VCEL.EHZ. 2021-05-25T18:00:56.97 0.3 undecidable manual S 128 0.3462 50 0.12 71
IV.NRCA.HHZ. 2021-05-25T18:00:56.90 0.3 undecidable manual S 311 0.3462 50 0.05 72
IV.CSP1.EHZ. 2021-05-25T18:00:54.52 0.6 positive manual P 338 0.5225 50 0.03 46
IV.RM33.EHZ. 2021-05-25T18:00:52.88 0.6 undecidable manual S 243 0.2113 50 0.03 49
IV.VCEL.EHZ. 2021-05-25T18:00:51.30 0.1 undecidable manual P 128 0.3462 50 -0.16 93
IV.NRCA.HHZ. 2021-05-25T18:00:51.39 0.1 undecidable manual P 311 0.3462 50 -0.07 95
IV.RM33.EHZ. 2021-05-25T18:00:49.19 0.6 positive manual P 243 0.2113 50 0.03 49
IV.TERO.HHZ. 2021-05-25T18:00:49.52 0.6 undecidable manual S 80 0.1007 134 -0.02 50
IV.TERO.HHZ. 2021-05-25T18:00:47.31 0.1 undecidable manual P 80 0.1007 134 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TERO.HHN. ML:1.3 0.000231 0.18 AML other m 2021-05-25T18:00:49.76
IV.TERO.HHE. ML:1.2 0.000162 0.16 AML other m 2021-05-25T18:00:49.75
IV.NRCA.HHE. ML:1 3.6E-5 0.14 AML other m 2021-05-25T18:00:57.31
IV.NRCA.HHN. ML:0.9 2.995E-5 0.7 AML other m 2021-05-25T18:00:57.48
IV.BSSO.HHE. ML:2.5 0.000148 0.5 AML other m 2021-05-25T18:01:50.47
IV.BSSO.HHN. ML:2.3 9.28E-5 0.5 AML other m 2021-05-25T18:01:51.55
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