Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 31-01-2020 and time 19:29:40 (Italy) in region 6 km NW Montale (PT)

A magnitude ML 1.5 earthquake occured in region: 6 km NW Montale (PT), on

  • 31-01-2020 18:29:40 (UTC)
  • 31-01-2020 19:29:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9820, 10.9850 at 8 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Montale PT 6 10737 10737
Montemurlo PO 7 18456 29193
Pistoia PT 8 90315 119508
Agliana PT 9 17525 137033
Cantagallo PO 11 3105 140138
Vaiano PO 11 9895 150033
Sambuca Pistoiese PT 14 1626 151659
Prato PO 14 191150 342809
Serravalle Pistoiese PT 15 11659 354468
Quarrata PT 15 26190 380658
Vernio PO 16 6060 386718
San Marcello Pistoiese PT 17 6416 393134
Marliana PT 18 3210 396344
Piteglio PT 18 1683 398027
Monsummano Terme PT 18 21338 419365
Carmignano PO 19 14450 433815
Pieve a Nievole PT 19 9266 443081
Poggio a Caiano PO 19 10007 453088
Alto Reno Terme BO 19 6960 460048
Larciano PT 19 6394 466442
Lamporecchio PT 20 7508 473950
Calenzano FI 20 17489 491439

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km NE of Pistoia (90315 inhabitants)
14 Km NW of Prato (191150 inhabitants)
29 Km NW of Scandicci (50609 inhabitants)
32 Km NW of Firenze (382808 inhabitants)
42 Km E of Lucca (89046 inhabitants)
55 Km NE of Pisa (89158 inhabitants)
60 Km E of Viareggio (62467 inhabitants)
64 Km SW of Bologna (386663 inhabitants)
68 Km E of Massa (69479 inhabitants)
71 Km SW of Imola (69797 inhabitants)
72 Km E of Carrara (63133 inhabitants)
72 Km NE of Livorno (159219 inhabitants)
74 Km S of Modena (184973 inhabitants)
79 Km NW of Siena (53903 inhabitants)
79 Km W of Faenza (58541 inhabitants)
84 Km SE of Reggio nell'Emilia (171345 inhabitants)
89 Km W of Forlì (117913 inhabitants)
89 Km S of Carpi (70699 inhabitants)
92 Km NW of Arezzo (99543 inhabitants)
93 Km E of La Spezia (93959 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.5 2020-01-31
18:29:40		 43.9823 10.9848 8 2020-07-18
21:08:21		 Bollettino Sismico Italiano INGV 76631321
Reviewed
Rev100 		ML 1.5 2020-01-31
18:29:40		 43.9875 10.9883 9 2020-01-31
18:41:04		 Sala Sismica INGV-Roma 76077241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-31 18:29:40 ± 0.08
Latitude 43.9823 ± 0.0054
Longitude 10.9848 ± 0.0050
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76631321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 571
Semi-minor axis of confidence ellipse (meter) 215
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 167
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.08004
Epicentral distance of station farthest from the epicenter (degree) 0.45686
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 76631321
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-18 16:06:15

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 76077241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-31 18:41:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PII.HHE. 2020-01-31T18:29:55.61 0.3 undecidable manual S 232 46.8198 50 -0.48 64
IV.VISG.HHZ. 2020-01-31T18:29:54.88 1.0 undecidable manual S 57 42.5241 50 -0.07 23
IV.ZCCA.HNE. 2020-01-31T18:29:54.85 1.0 undecidable manual S 359 40.8258 50 0.34 22
GU.CARD.HHZ. 2020-01-31T18:29:54.18 0.3 undecidable manual S 277 40.4262 50 -0.21 69
GU.MAIM.HHZ. 2020-01-31T18:29:53.82 0.3 undecidable manual S 259 40.1265 50 -0.49 65
IV.RONT.HHZ. 2020-01-31T18:29:53.21 0.3 undecidable manual S 88 35.742 50 0.06 71
IV.SEI.HHZ. 2020-01-31T18:29:51.04 0.3 undecidable manual S 75 30.8469 104 -0.47 66
IV.BDI.HHZ. 2020-01-31T18:29:51.67 0.3 undecidable manual S 286 32.3454 104 -0.33 68
IV.MTRZ.HNN. 2020-01-31T18:29:50.90 0.6 undecidable manual P 44 50.7159 50 0.82 37
IV.ZCCA.HNE. 2020-01-31T18:29:49.50 0.1 undecidable manual P 359 40.8258 50 0.93 72
IV.PII.HHE. 2020-01-31T18:29:49.42 0.1 undecidable manual P 232 46.8198 50 -0.06 93
IV.FNVD.HHE. 2020-01-31T18:29:48.72 0.3 undecidable manual S 28 23.3544 109 -0.29 70
GU.CARD.HHZ. 2020-01-31T18:29:48.42 0.6 undecidable manual P 277 40.4262 50 -0.08 47
IV.VISG.HHZ. 2020-01-31T18:29:48.73 0.1 undecidable manual P 57 42.5241 50 -0.1 93
GU.MAIM.HHZ. 2020-01-31T18:29:48.67 0.1 undecidable manual P 259 40.1265 50 0.22 91
GU.POPM.HHZ. 2020-01-31T18:29:48.05 0.3 undecidable manual S 291 19.4694 112 0.3 70
IV.CRMI.HHN. 2020-01-31T18:29:48.64 0.3 undecidable manual S 181 20.7681 111 0.48 67
IV.RONT.HHZ. 2020-01-31T18:29:47.74 0.1 undecidable manual P 88 35.742 50 -0.04 95
IV.BDI.HHZ. 2020-01-31T18:29:46.91 0.1 undecidable manual P 286 32.3454 104 -0.21 93
IV.SEI.HHZ. 2020-01-31T18:29:46.54 0.1 undecidable manual P 75 30.8469 104 -0.3 91
IV.CRMI.HHN. 2020-01-31T18:29:45.20 0.1 undecidable manual P 181 20.7681 111 0.3 93
IV.FNVD.HHE. 2020-01-31T18:29:45.60 0.1 undecidable manual P 28 23.3544 109 0.21 94
GU.POPM.HHZ. 2020-01-31T18:29:44.78 0.1 undecidable manual P 291 19.4694 112 0.12 97
IV.MPPT.EHZ. 2020-01-31T18:29:44.28 0.3 undecidable manual S 108 8.88 132 -0.31 71
IV.MPPT.EHZ. 2020-01-31T18:29:42.88 0.1 undecidable manual P 108 8.88 132 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MPPT.EHE. ML:1.5 0.0005420000000000001 0.36 AML other m 2020-01-31T18:29:44.81
IV.RONT.HHE. ML:1.9 0.0003135 0.34 AML other m 2020-01-31T18:29:55.68
IV.MPPT.EHN. ML:1.6 0.00064157455 0.2304 AML other m 2020-01-31T18:29:44.70
GU.POPM.HHN. ML:1.6 0.0003144885 0.1024 AML other m 2020-01-31T18:29:49.96
GU.POPM.HHE. ML:1.4 0.00022475539999999999 0.0896 AML other m 2020-01-31T18:29:48.64
IV.BDI.HHE. ML:1.2 0.00006593436 0.128 AML other m 2020-01-31T18:29:52.58
IV.BDI.HHN. ML:1.1 0.00005495514 0.256 AML other m 2020-01-31T18:29:53.56
IV.RONT.HHN. ML:1.7 0.00021886335 0.192 AML other m 2020-01-31T18:29:55.71
IV.SEI.HHE. ML:1.2 0.00007215415499999999 0.4096 AML other m 2020-01-31T18:29:53.94
IV.SEI.HHN. ML:1.4 0.00012098339999999999 0.3328 AML other m 2020-01-31T18:29:53.98
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