Earthquake with magnitude of ML 1.1 on date 27-09-2021 and time 06:51:51 (Italy) in region 1 km SE Cutigliano (PT)

A magnitude ML 1.1 earthquake occured in region: 1 km SE Cutigliano (PT), on

  • 27-09-2021 04:51:51 (UTC)
  • 27-09-2021 06:51:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.092, 10.765 at 51 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
Cutigliano PT 1 1488 1488
San Marcello Pistoiese PT 5 6416 7904
Piteglio PT 7 1683 9587
Abetone PT 10 621 10208
Lizzano in Belvedere BO 13 2212 12420
Fanano MO 13 2989 15409
Fiumalbo MO 14 1280 16689
Sestola MO 16 2508 19197
Bagni di Lucca LU 17 6161 25358
Marliana PT 17 3210 28568
Pievepelago MO 18 2222 30790
Montecreto MO 18 940 31730
Riolunato MO 18 712 32442
Alto Reno Terme BO 18 6960 39402
Gaggio Montano BO 18 4878 44280
Sambuca Pistoiese PT 19 1626 45906
Coreglia Antelminelli LU 19 5215 51121

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NW of Pistoia (90315 inhabitants)
35 Km NE of Lucca (89046 inhabitants)
35 Km NW of Prato (191150 inhabitants)
48 Km NE of Viareggio (62467 inhabitants)
50 Km NW of Scandicci (50609 inhabitants)
50 Km E of Massa (69479 inhabitants)
51 Km NE of Pisa (89158 inhabitants)
53 Km NW of Firenze (382808 inhabitants)
53 Km E of Carrara (63133 inhabitants)
63 Km S of Modena (184973 inhabitants)
64 Km SW of Bologna (386663 inhabitants)
68 Km S of Reggio nell'Emilia (171345 inhabitants)
70 Km NE of Livorno (159219 inhabitants)
75 Km E of La Spezia (93959 inhabitants)
78 Km S of Carpi (70699 inhabitants)
81 Km W of Imola (69797 inhabitants)
86 Km SE of Parma (192836 inhabitants)
92 Km W of Faenza (58541 inhabitants)
97 Km NW of Siena (53903 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 1.1 2021-09-27
04:51:51
44.0917 10.7653 51 2021-09-27
05:04:28
Sala Sismica INGV-Roma 95926441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-27 04:51:51 ± 0.18
Latitude 44.0917 ± 0.0117
Longitude 10.7653 ± 0.0125
Depth (km) 51 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95926441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1377
Semi-minor axis of confidence ellipse (meter) 377
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 205
Circular confidence region, given by single value of horizontal uncertainty (meter) 1380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 255
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.33365
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 5
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 95926441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-27 05:04:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MTGR.HHZ. 2021-09-27T04:53:15.13 3.0 undecidable manual Pn -7.18 0
GU.BURY.HHZ. 2021-09-27T04:53:10.39 3.0 undecidable manual Sg 14.98 0
IX.SSB3.HHZ.02 2021-09-27T04:53:10.92 3.0 positive manual Pg 18.48 0
IV.PZUN.HHZ. 2021-09-27T04:53:10.64 3.0 negative manual Pg 9.85 0
IV.MCRV.HHZ. 2021-09-27T04:53:05.77 3.0 undecidable manual Pg 10.49 0
IV.MCIV.CHZ. 2021-09-27T04:52:42.46 3.0 undecidable manual Sn 1.18 0
CR.ZAG.BHZ. 2021-09-27T04:52:36.40 3.0 positive manual Pn 0.21 0
IV.OFFI.HHZ. 2021-09-27T04:52:22.79 3.0 undecidable manual Pn -0.43 0
IV.CRMI.HHZ. 2021-09-27T04:52:07.87 0.6 undecidable manual S 152 0.3336 135 -0.14 63
GU.MAIM.HHZ. 2021-09-27T04:52:07.04 0.6 undecidable manual S 228 0.2653 143 0.09 64
GU.CARD.HHZ. 2021-09-27T04:52:06.02 0.6 undecidable manual S 252 0.214 149 -0.23 63
IV.EUCT.HNZ. 2021-09-27T04:52:06.25 3.0 negative manual Pn 0.15 0
GU.POPM.HHZ. 2021-09-27T04:52:05.11 0.6 undecidable manual S 187 0.0468 173 0.17 66
IV.BDI.HHZ. 2021-09-27T04:52:05.35 0.6 undecidable manual S 257 0.125 161 -0.01 67
IV.ZEN8.EHZ. 2021-09-27T04:52:04.54 3.0 undecidable manual Pg 4.78 0
IV.TREG.EHZ. 2021-09-27T04:52:01.73 3.0 negative manual P 3.32 0
IV.BRSN.HNZ. 2021-09-27T04:52:00.78 3.0 negative manual P 0.14 0
IV.CRMI.HHZ. 2021-09-27T04:52:00.78 0.6 negative manual P 152 0.3336 135 -0.06 64
GU.MAIM.HHZ. 2021-09-27T04:52:00.38 0.3 undecidable manual P 228 0.2653 143 0.16 95
GU.POPM.HHZ. 2021-09-27T04:51:59.10 0.6 positive manual P 187 0.0468 173 0.04 68
IV.BDI.HHZ. 2021-09-27T04:51:59.26 0.3 negative manual P 257 0.125 161 -0.05 100
GU.CARD.HHZ. 2021-09-27T04:51:59.77 0.6 positive manual P 252 0.214 149 -0.05 65
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.POPM.HHN. ML:1.1 3.715E-5 1.04 AML other m 2021-09-27T04:52:06.64
GU.CARD.HHE. ML:1.3 4.51407E-5 0.1408 AML other m 2021-09-27T04:52:06.61
IV.BRSN.HNE. ML:3.2 0.0011682638 0.192 AML other m 2021-09-27T04:52:07.10
IV.BRSN.EHE. ML:3 0.0008137757 0.08 AML other m 2021-09-27T04:52:07.89
GU.CARD.HHN. ML:1.2 3.8796185E-5 0.1792 AML other m 2021-09-27T04:52:06.51
IV.EUCT.HNE. ML:3.6 0.001485524 0.2016 AML other m 2021-09-27T04:52:10.51
IV.EUCT.HNN. ML:3.3 0.00076416025 0.08 AML other m 2021-09-27T04:52:10.50
IV.BRSN.HNN. ML:3 0.00074331235 0.2592 AML other m 2021-09-27T04:52:13.04
IV.BRSN.EHN. ML:3 0.00074620445 0.2592 AML other m 2021-09-27T04:52:13.17
GU.POPM.HHE. ML:1 2.726746E-5 0.2208 AML other m 2021-09-27T04:52:05.52
IV.BDI.HNE. ML:1.6 0.00010549737 0.9696 AML other m 2021-09-27T04:52:08.99
IV.BDI.HNN. ML:1.7 0.0001345441 0.8192 AML other m 2021-09-27T04:52:25.52
IV.BDI.HHE. ML:0.9 2.199678E-5 0.1408 AML other m 2021-09-27T04:52:06.14
IV.BDI.HHN. ML:1 2.695789E-5 0.24 AML other m 2021-09-27T04:52:05.63
GU.MAIM.HHE. ML:0.8 1.543184E-5 0.2016 AML other m 2021-09-27T04:52:07.37
GU.MAIM.HHN. ML:1.1 2.6295805E-5 0.1216 AML other m 2021-09-27T04:52:07.21
IV.CRMI.HHE. ML:0.7 1.2215246E-5 1.0784 AML other m 2021-09-27T04:52:29.71
IV.CRMI.HHN. ML:0.7 9.5646735E-6 1.2608 AML other m 2021-09-27T04:52:28.44
IV.CRMI.HNE. ML:1.8 0.0001405878 1.168 AML other m 2021-09-27T04:52:22.09
IV.CRMI.HNN. ML:2.4 0.00058254275 1.6416 AML other m 2021-09-27T04:52:25.58
IV.OFFI.HHE. ML:3 0.0001536055 1.2384 AML other m 2021-09-27T04:53:01.38
IV.OFFI.HHN. ML:2.9 0.0001334028 1.1392 AML other m 2021-09-27T04:53:12.20
CR.ZAG.BHE. ML:3.6 0.00016843865 0.32 AML other m 2021-09-27T04:53:43.07
CR.ZAG.BHN. ML:3.8 0.00025766445 0.2816 AML other m 2021-09-27T04:53:22.71
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