Earthquake with magnitude of ML 1.0 on date 26-06-2021 and time 20:04:55 (UTC) in region 6 km E Zeri (MS)

A magnitude ML 1.0 earthquake occured in region: 6 km E Zeri (MS), on

  • 26-06-2021 20:04:55 (UTC)
  • 26-06-2021 22:04:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.329, 9.83 at 4 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
Zeri MS 6 1094 1094
Mulazzo MS 6 2424 3518
Pontremoli MS 7 7357 10875
Filattiera MS 9 2309 13184
Zignago SP 9 532 13716
Calice al Cornoviglio SP 10 1138 14854
Rocchetta di Vara SP 10 703 15557
Villafranca in Lunigiana MS 11 4770 20327
Sesta Godano SP 13 1377 21704
Brugnato SP 13 1270 22974
Bagnone MS 13 1887 24861
Tresana MS 14 2044 26905
Borghetto di Vara SP 14 938 27843
Beverino SP 16 2429 30272
Podenzana MS 16 2180 32452
Bolano SP 16 7813 40265
Albareto PR 17 2156 42421
Carrodano SP 17 503 42924
Aulla MS 17 11263 54187
Licciana Nardi MS 18 4949 59136
Pignone SP 19 565 59701
Borgo Val di Taro PR 19 6999 66700
Carro SP 19 545 67245
Follo SP 19 6337 73582
Varese Ligure SP 19 2059 75641
Santo Stefano di Magra SP 20 9360 85001
Riccò del Golfo di Spezia SP 20 3698 88699

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km N of La Spezia (93959 inhabitants)
35 Km NW of Carrara (63133 inhabitants)
41 Km NW of Massa (69479 inhabitants)
61 Km NW of Viareggio (62467 inhabitants)
66 Km SW of Parma (192836 inhabitants)
72 Km E of Genova (586655 inhabitants)
76 Km SW of Reggio nell'Emilia (171345 inhabitants)
76 Km NW of Lucca (89046 inhabitants)
81 Km S of Piacenza (102191 inhabitants)
82 Km NW of Pisa (89158 inhabitants)
91 Km S of Cremona (71901 inhabitants)
94 Km W of Modena (184973 inhabitants)
94 Km NW of Livorno (159219 inhabitants)
97 Km W of Pistoia (90315 inhabitants)
98 Km SW of Carpi (70699 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 1.0 2021-06-26
20:04:55
44.3288 9.8298 4 2021-06-26
20:13:49
Sala Sismica INGV-Roma 91939211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-26 20:04:55 ± 0.08
Latitude 44.3288 ± 0.0036
Longitude 9.8298 ± 0.0038
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 91939211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 399
Semi-minor axis of confidence ellipse (meter) 83
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 0
Circular confidence region, given by single value of horizontal uncertainty (meter) 400
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.47304
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 91939211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-26 20:13:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
OT.OT11.EHZ. 2021-06-26T20:06:04.82 3.0 positive manual Pn -0.8 0
IV.AGLI.HHZ. 2021-06-26T20:05:51.72 3.0 undecidable manual Pg 9.4 0
IV.FIR.HHZ. 2021-06-26T20:05:31.38 3.0 undecidable manual Sn 1.06 0
IV.ZEN8.EHZ. 2021-06-26T20:05:16.07 3.0 negative manual Pg -0.15 0
IV.FIR.HHZ. 2021-06-26T20:05:14.55 3.0 negative manual Pg 0.56 0
IV.MILN.HHZ. 2021-06-26T20:05:12.49 3.0 undecidable manual Pg 0 0
GU.EQUI.HHZ. 2021-06-26T20:05:05.79 0.6 undecidable manual S 125 0.2824 97 -0.35 46
IV.PLMA.HHZ. 2021-06-26T20:05:05.86 0.3 undecidable manual S 176 0.2797 97 -0.15 72
GU.GORR.HHE. 2021-06-26T20:05:05.54 0.6 undecidable manual P 306 0.473 50 -0.03 48
GU.FIVI.HNZ. 2021-06-26T20:05:04.46 0.6 undecidable manual S 113 0.2302 99 0.31 47
GU.GRAM.HHZ. 2021-06-26T20:05:04.13 0.3 undecidable manual S 46 0.2329 99 -0.1 74
IV.MSSA.HHZ. 2021-06-26T20:05:03.86 0.1 undecidable manual S 267 0.2239 99 -0.03 100
GU.EQUI.HHZ. 2021-06-26T20:05:01.41 0.1 undecidable manual P 125 0.2824 97 -0.09 98
IV.PLMA.HHZ. 2021-06-26T20:05:01.48 0.3 undecidable manual P 176 0.2797 97 0.05 74
GU.GRAM.HHZ. 2021-06-26T20:05:00.32 0.1 undecidable manual P 46 0.2329 99 -0.08 99
GU.FIVI.HNZ. 2021-06-26T20:05:00.63 0.1 undecidable manual P 113 0.2302 99 0.28 95
IV.MSSA.HHZ. 2021-06-26T20:05:00.28 0.1 undecidable manual P 267 0.2239 99 0.08 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MSSA.HHN. ML:1.8 0.000375 1.9 AML other m 2021-06-26T20:05:03.04
IV.MSSA.HHE. ML:1.6 0.000242 0.1 AML other m 2021-06-26T20:05:04.31
GU.GRAM.HHE. ML:1 5.97E-5 0.62 AML other m 2021-06-26T20:05:04.33
GU.GRAM.HHN. ML:0.8 4.0202325E-5 0.2944 AML other m 2021-06-26T20:05:04.30
GU.EQUI.HHE. ML:0.3 9.6016425E-6 0.32 AML other m 2021-06-26T20:05:05.96
GU.EQUI.HHN. ML:0 3.33783935E-6 0.1536 AML other m 2021-06-26T20:05:06.41
IV.PLMA.HHE. ML:1 4.27935E-5 0.3456 AML other m 2021-06-26T20:05:06.28
IV.PLMA.HHN. ML:0.8 3.0865555E-5 0.192 AML other m 2021-06-26T20:05:06.43
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