Earthquake with magnitude of ML 1.7 on date 17-02-2021 and time 11:20:20 (UTC) in region 3 km S Loro Piceno (MC)

A magnitude ML 1.7 earthquake occured in region: 3 km S Loro Piceno (MC), on

  • 17-02-2021 11:20:20 (UTC)
  • 17-02-2021 12:20:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.14, 13.42 at 26 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
Loro Piceno MC 3 2401 2401
Montappone FM 4 1682 4083
Massa Fermana FM 5 963 5046
Ripe San Ginesio MC 5 852 5898
Sant'Angelo in Pontano MC 5 1436 7334
Falerone FM 5 3337 10671
Monte Vidon Corrado FM 5 731 11402
Colmurano MC 6 1263 12665
Mogliano MC 7 4696 17361
Urbisaglia MC 8 2628 19989
Servigliano FM 8 2336 22325
Penna San Giovanni MC 9 1108 23433
San Ginesio MC 9 3498 26931
Montegiorgio FM 9 6851 33782
Petriolo MC 10 1998 35780
Gualdo MC 10 815 36595
Belmonte Piceno FM 11 646 37241
Francavilla d'Ete FM 11 964 38205
Monte San Martino MC 12 765 38970
Camporotondo di Fiastrone MC 13 563 39533
Monteleone di Fermo FM 13 395 39928
Monsampietro Morico FM 13 659 40587
Magliano di Tenna FM 13 1452 42039
Cessapalombo MC 14 512 42551
Tolentino MC 14 20069 62620
Rapagnano FM 14 2145 64765
Monte San Pietrangeli FM 14 2458 67223
Corridonia MC 14 15430 82653
Santa Vittoria in Matenano FM 14 1330 83983
Grottazzolina FM 15 3398 87381
Smerillo FM 15 365 87746
Sarnano MC 15 3264 91010
Belforte del Chienti MC 15 1886 92896
Montottone FM 15 979 93875
Torre San Patrizio FM 16 2048 95923
Montelparo FM 16 778 96701
Pollenza MC 16 6618 103319
Caldarola MC 16 1823 105142
Montefalcone Appennino FM 17 424 105566
Monte Rinaldo FM 18 379 105945
Monte Giberto FM 18 801 106746
Monte San Giusto MC 18 8191 114937
Amandola FM 18 3629 118566
Macerata MC 18 42473 161039
Ortezzano FM 19 774 161813
Monte Vidon Combatte FM 19 433 162246
Ponzano di Fermo FM 19 1674 163920
Serrapetrona MC 20 966 164886
Comunanza AP 20 3166 168052
Force AP 20 1354 169406

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km S of Ancona (100861 inhabitants)
58 Km NW of Teramo (54892 inhabitants)
62 Km E of Foligno (57155 inhabitants)
84 Km E of Perugia (166134 inhabitants)
85 Km SE of Fano (60888 inhabitants)
87 Km N of L'Aquila (69753 inhabitants)
90 Km NE of Terni (111501 inhabitants)
91 Km NW of Montesilvano (53738 inhabitants)
95 Km SE of Pesaro (94582 inhabitants)
99 Km NW of Pescara (121014 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 2021-02-17
11:20:20
43.14 13.42 26 2021-02-17
11:29:01
Sala Sismica INGV-Roma 87237331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-17 11:20:20 ± 0.17
Latitude 43.14 ± 0.01
Longitude 13.42 ± 0.01
Depth (km) 26 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87237331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 759
Semi-minor axis of confidence ellipse (meter) 454
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 167
Circular confidence region, given by single value of horizontal uncertainty (meter) 760
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.402
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 87237331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-17 11:29:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2021-02-17T11:20:41.09 3.0 undecidable manual S 0.17 0
IV.CESI.HHZ. 2021-02-17T11:20:36.67 0.6 undecidable manual S 251 0.402 113 0.53 42
IV.NRCA.HHZ. 2021-02-17T11:20:35.64 0.6 undecidable manual S 217 0.3786 115 0.13 46
IV.EL6.EHZ. 2021-02-17T11:20:34.28 0.6 undecidable manual S 309 0.304 121 0.74 40
IV.MC2.EHZ. 2021-02-17T11:20:33.23 0.6 undecidable manual S 217 0.2842 123 0.19 47
IV.FDMO.HHZ. 2021-02-17T11:20:32.61 0.3 undecidable manual S 248 0.2662 125 0.01 73
IV.MF5.EHZ. 2021-02-17T11:20:30.35 0.3 undecidable manual S 170 0.1511 143 0.22 71
IV.CSP1.EHZ. 2021-02-17T11:20:29.65 0.6 undecidable manual S 254 0.1664 140 -0.77 40
IV.CESI.HHZ. 2021-02-17T11:20:29.77 0.3 undecidable manual P 251 0.402 113 0.05 70
IV.GUMA.HHZ. 2021-02-17T11:20:29.32 0.3 undecidable manual S 221 0.0989 154 0.01 75
IV.NRCA.HHZ. 2021-02-17T11:20:29.23 0.1 negative manual P 217 0.3786 115 -0.13 92
IV.MNTP.HNZ. 2021-02-17T11:20:28.64 0.3 undecidable manual S 89 0.0324 171 -0.07 75
IV.SAP2.EHZ. 2021-02-17T11:20:28.68 0.3 undecidable manual S 205 0.0441 168 -0.1 75
IV.EL6.EHZ. 2021-02-17T11:20:28.35 0.1 undecidable manual P 309 0.304 121 0.13 94
IV.FDMO.HHZ. 2021-02-17T11:20:27.58 0.1 undecidable manual P 248 0.2662 125 -0.1 95
IV.MC2.EHZ. 2021-02-17T11:20:27.81 0.1 undecidable manual P 217 0.2842 123 -0.12 94
IV.MF5.EHZ. 2021-02-17T11:20:26.31 0.1 positive manual P 170 0.1511 143 0.05 98
IV.CSP1.EHZ. 2021-02-17T11:20:26.31 0.1 negative manual P 254 0.1664 140 -0.11 96
IV.MNTT.EHZ. 2021-02-17T11:20:26.37 0.3 undecidable manual P 121 0.1457 144 0.18 72
IV.GUMA.HHZ. 2021-02-17T11:20:25.68 0.1 undecidable manual P 221 0.0989 154 -0.1 98
IV.MNTP.HNZ. 2021-02-17T11:20:25.36 0.1 negative manual P 89 0.0324 171 -0.08 100
IV.SAP2.EHZ. 2021-02-17T11:20:25.34 0.1 undecidable manual P 205 0.0441 168 -0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SAP2.EHN. ML:2.4 0.001405 0.62 AML other m 2021-02-17T11:20:29.50
IV.CSP1.EHN. ML:1.6 0.0002121833 1.0176 AML other m 2021-02-17T11:20:34.12
IV.MF5.EHN. ML:1.6 0.0002075 0.46 AML other m 2021-02-17T11:20:30.51
IV.MF5.EHE. ML:1.8 0.000314 0.28 AML other m 2021-02-17T11:20:30.60
IV.SAP2.EHE. ML:1.9 0.0004755 0.26 AML other m 2021-02-17T11:20:32.40
IV.MNTT.EHN. ML:1.8 0.0002935 0.2 AML other m 2021-02-17T11:20:32.55
IV.GUMA.HHE. ML:1.9 0.000453 0.54 AML other m 2021-02-17T11:20:32.52
IV.GUMA.HHN. ML:2.2 0.000845 0.24 AML other m 2021-02-17T11:20:32.68
IV.FDMO.HHE. ML:1.3 7.945E-5 0.12 AML other m 2021-02-17T11:20:32.97
IV.FDMO.HHN. ML:1.1 5.23E-5 1.92 AML other m 2021-02-17T11:20:32.01
IV.MNTT.EHE. ML:2.1 0.000616 0.14 AML other m 2021-02-17T11:20:33.93
IV.CSP1.EHE. ML:1.7 0.000223 1.26 AML other m 2021-02-17T11:20:33.29
IV.NRCA.HHN. ML:1.6 0.00011345 0.16 AML other m 2021-02-17T11:20:35.79
IV.NRCA.HHE. ML:1.8 0.00015945865 6.5216 AML other m 2021-02-17T11:20:36.06
IV.CESI.HHN. ML:1.1 2.929964E-5 0.7232 AML other m 2021-02-17T11:20:37.22
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