Earthquake with magnitude of ML 1.9 on date 26-02-2020 and time 23:00:16 (Italy) in region 2 km NW Gualdo (MC)

A magnitude ML 1.9 earthquake occured in region: 2 km NW Gualdo (MC), on

  • 26-02-2020 22:00:16 (UTC)
  • 26-02-2020 23:00:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.08, 13.32 at 24 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
Gualdo MC 2 815 815
San Ginesio MC 3 3498 4313
Sarnano MC 6 3264 7577
Cessapalombo MC 6 512 8089
Sant'Angelo in Pontano MC 6 1436 9525
Camporotondo di Fiastrone MC 7 563 10088
Ripe San Ginesio MC 8 852 10940
Penna San Giovanni MC 9 1108 12048
Colmurano MC 9 1263 13311
Caldarola MC 10 1823 15134
Belforte del Chienti MC 11 1886 17020
Monte San Martino MC 11 765 17785
Amandola FM 12 3629 21414
Loro Piceno MC 12 2401 23815
Bolognola MC 13 142 23957
Falerone FM 13 3337 27294
Montappone FM 13 1682 28976
Urbisaglia MC 13 2628 31604
Acquacanina MC 13 121 31725
Smerillo FM 13 365 32090
Servigliano FM 14 2336 34426
Monte Vidon Corrado FM 14 731 35157
Tolentino MC 14 20069 55226
Fiastra MC 15 559 55785
Massa Fermana FM 15 963 56748
Serrapetrona MC 15 966 57714
Montefalcone Appennino FM 16 424 58138
Montefortino FM 16 1178 59316
Santa Vittoria in Matenano FM 16 1330 60646
Comunanza AP 16 3166 63812
Mogliano MC 17 4696 68508
Monteleone di Fermo FM 17 395 68903
Belmonte Piceno FM 18 646 69549
Montegiorgio FM 18 6851 76400
Montelparo FM 19 778 77178
Monsampietro Morico FM 19 659 77837
Petriolo MC 19 1998 79835
Force AP 19 1354 81189
Pievebovigliana MC 19 866 82055
Fiordimonte MC 20 202 82257
San Severino Marche MC 20 12726 94983

Municipalities with at least 50000 inhabitants

An earthquake occurred to
52 Km E of Foligno (57155 inhabitants)
57 Km NW of Teramo (54892 inhabitants)
61 Km S of Ancona (100861 inhabitants)
76 Km E of Perugia (166134 inhabitants)
80 Km NE of Terni (111501 inhabitants)
82 Km N of L'Aquila (69753 inhabitants)
88 Km S of Fano (60888 inhabitants)
93 Km NW of Montesilvano (53738 inhabitants)
98 Km SE of Pesaro (94582 inhabitants)
100 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
Rev 100 ML 1.9 2020-02-26
22:00:16
43.08 13.32 24 2020-02-26
22:09:14
Sala Sismica INGV-Roma 76850901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-26 22:00:16 ± 0.17
Latitude 43.08 ± 0.01
Longitude 13.32 ± 0.01
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76850901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 633
Semi-minor axis of confidence ellipse (meter) 459
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 185
Circular confidence region, given by single value of horizontal uncertainty (meter) 640
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.50542
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 76850901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-26 22:09:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-02-26T22:00:34.46 3.0 undecidable manual S -1.17 0
IV.ATFO.HHZ. 2020-02-26T22:00:28.97 3.0 positive manual P -0.07 0
IV.MURB.HHZ. 2020-02-26T22:00:28.95 3.0 positive manual P 0.02 0
IV.MNTT.EHZ. 2020-02-26T22:00:27.14 0.3 undecidable manual S 96 0.2005 131 0.88 58
IV.TERO.HHZ. 2020-02-26T22:00:26.67 0.1 undecidable manual P 156 0.5054 106 -0.08 92
IV.MC2.EHZ. 2020-02-26T22:00:26.63 0.1 undecidable manual S 209 0.1988 132 0.42 91
IV.MF5.EHZ. 2020-02-26T22:00:25.04 0.1 undecidable manual S 134 0.1394 143 0.02 100
IV.FDMO.HHZ. 2020-02-26T22:00:25.88 0.3 undecidable manual S 254 0.1781 135 0.11 73
IV.SMA1.EHZ. 2020-02-26T22:00:25.72 0.1 undecidable manual P 179 0.4542 108 -0.19 91
IV.MMO1.EHZ. 2020-02-26T22:00:25.83 0.1 undecidable manual S 179 0.1853 134 -0.1 97
IV.CSP1.EHZ. 2020-02-26T22:00:24.09 0.3 undecidable manual S 275 0.0863 156 -0.11 74
IV.SNTG.HHZ. 2020-02-26T22:00:24.05 3.0 negative manual P -0.09 0
IV.CESI.HHZ. 2020-02-26T22:00:24.08 0.1 undecidable manual P 255 0.3157 117 0.36 89
IV.GUMA.HHZ. 2020-02-26T22:00:23.47 0.1 undecidable manual S 157 0.0243 173 -0.23 97
IV.NRCA.HHZ. 2020-02-26T22:00:23.44 0.1 undecidable manual P 211 0.2941 119 0.05 96
IV.MTRA.EHZ. 2020-02-26T22:00:23.75 0.1 undecidable manual P 171 0.3327 116 -0.23 92
IV.EL6.EHZ. 2020-02-26T22:00:23.54 3.0 positive manual P -0.06 0
IV.MNTT.EHZ. 2020-02-26T22:00:22.29 0.1 undecidable manual P 96 0.2005 131 0.2 96
IV.MC2.EHZ. 2020-02-26T22:00:22.18 0.1 undecidable manual P 209 0.1988 132 0.11 97
IV.MMO1.EHZ. 2020-02-26T22:00:21.68 0.1 undecidable manual P 179 0.1853 134 -0.22 95
IV.MF5.EHZ. 2020-02-26T22:00:21.35 0.1 undecidable manual P 134 0.1394 143 -0.03 100
IV.FDMO.HHZ. 2020-02-26T22:00:21.81 0.1 undecidable manual P 254 0.1781 135 0 99
IV.MNTP.HNZ. 2020-02-26T22:00:21.01 0.1 undecidable manual P 64 0.1196 147 -0.17 97
IV.CSP1.EHZ. 2020-02-26T22:00:20.82 0.1 undecidable manual P 275 0.0863 156 -0.09 100
IV.GUMA.HHZ. 2020-02-26T22:00:20.42 0.3 undecidable manual P 157 0.0243 173 -0.19 74
IV.SAP2.EHZ. 2020-02-26T22:00:20.63 3.0 undecidable manual P -0.03 0
IV.PF6.EHZ. 2020-02-26T22:00:20.88 0.1 undecidable manual P 300 0.107 150 -0.19 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SAP2.EHN. ML:2.4 0.001575 1.1 AML other m 2020-02-26T22:00:23.26
IV.CSP1.EHN. ML:1.9 0.0005215 0.4 AML other m 2020-02-26T22:00:24.34
IV.CSP1.EHE. ML:2.2 0.0009245 0.28 AML other m 2020-02-26T22:00:24.40
IV.SAP2.EHE. ML:1.6 0.0002945 0.56 AML other m 2020-02-26T22:00:24.49
IV.FDMO.HHE. ML:1.9 0.0004245 1.64 AML other m 2020-02-26T22:00:26.08
IV.FDMO.HHN. ML:2 0.0004415 0.12 AML other m 2020-02-26T22:00:26.15
IV.NRCA.HHE. ML:2 0.0003645 0.84 AML other m 2020-02-26T22:00:28.56
IV.EL6.EHE. ML:2 0.000366 0.94 AML other m 2020-02-26T22:00:29.45
IV.EL6.EHN. ML:2 0.0003165 0.16 AML other m 2020-02-26T22:00:29.81
IV.NRCA.HHN. ML:1.9 0.0002935 1.2 AML other m 2020-02-26T22:00:29.74
IV.SMA1.EHN. ML:1.6 8.265E-5 0.42 AML other m 2020-02-26T22:00:29.71
IV.MURB.HHN. ML:1.9 0.00013895 1.58 AML other m 2020-02-26T22:00:31.05
IV.TERO.HHN. ML:1.4 5.365E-5 0.18 AML other m 2020-02-26T22:00:35.82
IV.TERO.HHE. ML:1.5 6.32E-5 1.04 AML other m 2020-02-26T22:00:36.02
IV.MURB.HHE. ML:2 0.000153 0.44 AML other m 2020-02-26T22:00:40.90
IV.SMA1.EHE. ML:1.8 0.0001345 0.42 AML other m 2020-02-26T22:00:41.30
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