Earthquake with magnitude of ML 1.6 on date 26-05-2021 and time 04:21:10 (UTC) in region 2 km NW Mulazzo (MS)

A magnitude ML 1.6 earthquake occured in region: 2 km NW Mulazzo (MS), on

  • 26-05-2021 04:21:10 (UTC)
  • 26-05-2021 06:21:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.335, 9.896 at 9 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
Mulazzo MS 2 2424 2424
Filattiera MS 3 2309 4733
Pontremoli MS 5 7357 12090
Villafranca in Lunigiana MS 7 4770 16860
Bagnone MS 8 1887 18747
Zeri MS 11 1094 19841
Calice al Cornoviglio SP 11 1138 20979
Tresana MS 12 2044 23023
Zignago SP 14 532 23555
Licciana Nardi MS 14 4949 28504
Rocchetta di Vara SP 14 703 29207
Podenzana MS 15 2180 31387
Aulla MS 15 11263 42650
Bolano SP 16 7813 50463
Brugnato SP 17 1270 51733
Sesta Godano SP 18 1377 53110
Borghetto di Vara SP 19 938 54048
Beverino SP 19 2429 56477
Santo Stefano di Magra SP 19 9360 65837
Follo SP 19 6337 72174
Comano MS 20 714 72888
Albareto PR 20 2156 75044
Borgo Val di Taro PR 20 6999 82043

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km N of La Spezia (93959 inhabitants)
33 Km NW of Carrara (63133 inhabitants)
39 Km NW of Massa (69479 inhabitants)
59 Km NW of Viareggio (62467 inhabitants)
62 Km SW of Parma (192836 inhabitants)
71 Km SW of Reggio nell'Emilia (171345 inhabitants)
73 Km NW of Lucca (89046 inhabitants)
77 Km E of Genova (586655 inhabitants)
80 Km NW of Pisa (89158 inhabitants)
81 Km S of Piacenza (102191 inhabitants)
89 Km W of Modena (184973 inhabitants)
89 Km S of Cremona (71901 inhabitants)
93 Km SW of Carpi (70699 inhabitants)
93 Km NW of Livorno (159219 inhabitants)
93 Km W of Pistoia (90315 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 1.6 2021-05-26
04:21:10
44.3353 9.8962 9 2021-05-26
04:30:16
Sala Sismica INGV-Roma 90501271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-26 04:21:10 ± 0.19
Latitude 44.3353 ± 0.0081
Longitude 9.8962 ± 0.0151
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90501271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1110
Semi-minor axis of confidence ellipse (meter) 886
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 67
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) 132
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.3912
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 90501271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-26 04:30:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ESCV.HHZ. 2021-05-26T04:22:46.06 3.0 undecidable manual Pn -8.04 0
IV.RCAV.EHZ. 2021-05-26T04:22:43.78 3.0 undecidable manual Sg 6.96 0
IV.LPEL.HHZ. 2021-05-26T04:22:39.02 3.0 undecidable manual Sn -9.86 0
MN.TRI.HHZ. 2021-05-26T04:22:23.61 3.0 undecidable manual Sn 0.38 0
IV.SENA.HHZ. 2021-05-26T04:22:03.79 3.0 undecidable manual Pn -0.84 0
IV.FROS.CHZ. 2021-05-26T04:21:51.97 3.0 undecidable manual Sg 0.08 0
GU.SARM.EHE. 2021-05-26T04:21:25.20 0.6 undecidable manual S 113 0.3912 50 0.34 60
IV.CSNT.HHZ. 2021-05-26T04:21:24.75 3.0 positive manual Pn -4.02 0
IV.PLMA.HHZ. 2021-05-26T04:21:21.04 0.6 undecidable manual S 186 0.2869 50 -0.73 54
GU.EQUI.HHZ. 2021-05-26T04:21:20.59 0.3 undecidable manual S 133 0.25 109 0 99
IV.NDIM.HHZ. 2021-05-26T04:21:19.12 3.0 negative manual P -0.96 0
GU.GRAM.HHZ. 2021-05-26T04:21:18.42 0.3 undecidable manual S 38 0.1961 113 -0.25 95
GU.SARM.EHE. 2021-05-26T04:21:18.69 0.6 undecidable manual P 113 0.3912 50 -0.08 63
IV.MSSA.HHZ. 2021-05-26T04:21:17.14 0.6 negative manual P 266 0.2716 50 0.43 60
IV.PLMA.HHZ. 2021-05-26T04:21:16.96 0.3 undecidable manual P 186 0.2869 50 -0.02 98
GU.EQUI.HHZ. 2021-05-26T04:21:16.54 0.3 undecidable manual P 133 0.25 109 0.24 94
GU.GRAM.HHZ. 2021-05-26T04:21:15.19 0.3 undecidable manual P 38 0.1961 113 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GRAM.HHE. ML:1.4 0.0001885 0.22 AML other m 2021-05-26T04:21:18.74
GU.GRAM.HHN. ML:1.2 0.00012050461 0.16 AML other m 2021-05-26T04:21:20.30
IV.MSSA.HHN. ML:1.9 0.000398 0.12 AML other m 2021-05-26T04:21:21.63
IV.MSSA.HHE. ML:1.7 0.0002625 0.14 AML other m 2021-05-26T04:21:21.59
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