Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 05-03-2021 and time 18:01:48 (Italy) in region 2 km NW Gualdo (MC)

A magnitude ML 1.1 earthquake occured in region: 2 km NW Gualdo (MC), on

  • 05-03-2021 17:01:48 (UTC)
  • 05-03-2021 18:01:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.08, 13.32 at 23 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.

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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 4 3498 4313
Sarnano MC 5 3264 7577
Cessapalombo MC 6 512 8089
Sant'Angelo in Pontano MC 7 1436 9525
Camporotondo di Fiastrone MC 8 563 10088
Ripe San Ginesio MC 8 852 10940
Penna San Giovanni MC 9 1108 12048
Caldarola MC 10 1823 13871
Colmurano MC 10 1263 15134
Amandola FM 11 3629 18763
Monte San Martino MC 11 765 19528
Belforte del Chienti MC 12 1886 21414
Bolognola MC 12 142 21556
Loro Piceno MC 13 2401 23957
Acquacanina MC 13 121 24078
Falerone FM 13 3337 27415
Smerillo FM 13 365 27780
Fiastra MC 14 559 28339
Montappone FM 14 1682 30021
Servigliano FM 14 2336 32357
Urbisaglia MC 14 2628 34985
Monte Vidon Corrado FM 14 731 35716
Tolentino MC 15 20069 55785
Montefortino FM 15 1178 56963
Massa Fermana FM 15 963 57926
Montefalcone Appennino FM 15 424 58350
Serrapetrona MC 15 966 59316
Comunanza AP 15 3166 62482
Santa Vittoria in Matenano FM 16 1330 63812
Monteleone di Fermo FM 17 395 64207
Mogliano MC 18 4696 68903
Belmonte Piceno FM 18 646 69549
Montelparo FM 19 778 70327
Montegiorgio FM 19 6851 77178
Force AP 19 1354 78532
Pievebovigliana MC 19 866 79398
Fiordimonte MC 19 202 79600
Monsampietro Morico FM 19 659 80259
Montemonaco AP 20 604 80863
Petriolo MC 20 1998 82861

Municipalities with at least 50000 inhabitants

An earthquake occurred to
52 Km E of Foligno (57155 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
62 Km S of Ancona (100861 inhabitants)
76 Km E of Perugia (166134 inhabitants)
79 Km NE of Terni (111501 inhabitants)
81 Km N of L'Aquila (69753 inhabitants)
89 Km S of Fano (60888 inhabitants)
92 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
Reviewed
Rev100 		ML 1.1 2021-03-05
17:01:48		 43.08 13.32 23 2021-03-05
17:09:15		 Sala Sismica INGV-Roma 87789711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-05 17:01:48 ± 0.27
Latitude 43.08 ± 0.01
Longitude 13.32 ± 0.01
Depth (km) 23 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87789711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1114
Semi-minor axis of confidence ellipse (meter) 231
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 21
Circular confidence region, given by single value of horizontal uncertainty (meter) 1110
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 211
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.08454
Epicentral distance of station farthest from the epicenter (degree) 0.31117
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 14
Type of magnitude ML
Reference to an origin 87789711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-05 17:09:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CESI.HHZ. 2021-03-05T17:02:01.97 0.3 undecidable manual S 257 0.3112 117 0.73 63
IV.NRCA.HHZ. 2021-03-05T17:02:00.66 0.1 undecidable manual S 212 0.286 119 0.08 99
IV.MC2.EHZ. 2021-03-05T17:01:58.48 0.1 undecidable manual S 210 0.1916 132 0.2 98
IV.MMO1.EHZ. 2021-03-05T17:01:57.84 0.1 undecidable manual S 178 0.1781 134 -0.15 99
IV.FDMO.HHZ. 2021-03-05T17:01:57.72 0.1 undecidable manual S 256 0.1745 135 -0.19 98
IV.MF5.EHZ. 2021-03-05T17:01:57.44 0.1 undecidable manual S 131 0.1367 142 0.28 96
IV.CESI.HHZ. 2021-03-05T17:01:56.13 0.3 undecidable manual P 257 0.3112 117 0.16 72
IV.CSP1.EHZ. 2021-03-05T17:01:56.19 0.1 undecidable manual S 280 0.0845 155 -0.17 100
IV.NRCA.HHZ. 2021-03-05T17:01:55.45 0.1 undecidable manual P 212 0.286 119 -0.14 98
IV.MC2.EHZ. 2021-03-05T17:01:54.28 0.6 positive manual P 210 0.1916 132 0.03 51
IV.MF5.EHZ. 2021-03-05T17:01:53.67 0.6 negative manual P 131 0.1367 142 0.06 50
IV.MMO1.EHZ. 2021-03-05T17:01:53.81 0.6 positive manual P 178 0.1781 134 -0.28 49
IV.FDMO.HHZ. 2021-03-05T17:01:53.88 0.1 negative manual P 256 0.1745 135 -0.16 99
IV.CSP1.EHZ. 2021-03-05T17:01:52.94 0.1 negative manual P 280 0.0845 155 -0.21 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.5 1.68E-5 0.3 AML other m 2021-03-05T17:01:58.43
IV.FDMO.HHE. ML:0.7 2.71E-5 0.12 AML other m 2021-03-05T17:01:58.72
IV.NRCA.HHE. ML:1.2 6.315E-5 1.06 AML other m 2021-03-05T17:02:01.56
IV.NRCA.HHN. ML:1.3 7.45E-5 0.14 AML other m 2021-03-05T17:02:01.53
IV.CSP1.EHE. ML:1.2 0.00010613305 0.1408 AML other m 2021-03-05T17:01:56.68
IV.CSP1.EHN. ML:1.1 9.023702E-5 0.0896 AML other m 2021-03-05T17:01:56.28
IV.MF5.EHE. ML:0.7 3.0080925E-5 0.768 AML other m 2021-03-05T17:02:05.53
IV.MF5.EHN. ML:0.6 2.3982775E-5 0.1024 AML other m 2021-03-05T17:01:58.16
IV.NRCA.HNE. ML:1.5 0.00011801955 0.8192 AML other m 2021-03-05T17:02:04.92
IV.NRCA.HNN. ML:1.8 0.0002124353 0.9216 AML other m 2021-03-05T17:02:05.54
IV.CESI.HNE. ML:1.6 0.000122383485 0.6656 AML other m 2021-03-05T17:02:07.46
IV.CESI.HNN. ML:1.5 0.0001155506 0.64 AML other m 2021-03-05T17:02:01.52
IV.CESI.HHE. ML:0.5 1.15639395E-5 0.1792 AML other m 2021-03-05T17:02:03.05
IV.CESI.HHN. ML:0.8 2.00550935E-5 0.2176 AML other m 2021-03-05T17:02:02.14
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