Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 25-03-2020 and time 05:20:35 (Italy) in region 7 km NW Pistoia (PT)

A magnitude ML 1.7 earthquake occured in region: 7 km NW Pistoia (PT), on

  • 25-03-2020 04:20:35 (UTC)
  • 25-03-2020 05:20:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9860, 10.8690 at 53 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
Pistoia PT 7 90315 90315
Serravalle Pistoiese PT 9 11659 101974
Piteglio PT 9 1683 103657
Marliana PT 10 3210 106867
San Marcello Pistoiese PT 10 6416 113283
Massa e Cozzile PT 13 7983 121266
Pieve a Nievole PT 13 9266 130532
Monsummano Terme PT 13 21338 151870
Montale PT 14 10737 162607
Montecatini-Terme PT 14 20409 183016
Agliana PT 14 17525 200541
Montemurlo PO 15 18456 218997
Cutigliano PT 16 1488 220485
Buggiano PT 16 8825 229310
Sambuca Pistoiese PT 17 1626 230936
Pescia PT 17 19644 250580
Uzzano PT 17 5770 256350
Quarrata PT 18 26190 282540
Larciano PT 18 6394 288934
Ponte Buggianese PT 19 8804 297738
Lamporecchio PT 19 7508 305246
Villa Basilica LU 19 1633 306879
Lizzano in Belvedere BO 20 2212 309091
Cantagallo PO 20 3105 312196

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km NW of Pistoia (90315 inhabitants)
22 Km NW of Prato (191150 inhabitants)
33 Km E of Lucca (89046 inhabitants)
36 Km NW of Scandicci (50609 inhabitants)
39 Km NW of Firenze (382808 inhabitants)
48 Km NE of Pisa (89158 inhabitants)
51 Km E of Viareggio (62467 inhabitants)
58 Km E of Massa (69479 inhabitants)
63 Km E of Carrara (63133 inhabitants)
66 Km NE of Livorno (159219 inhabitants)
68 Km SW of Bologna (386663 inhabitants)
74 Km S of Modena (184973 inhabitants)
79 Km SW of Imola (69797 inhabitants)
82 Km S of Reggio nell'Emilia (171345 inhabitants)
83 Km NW of Siena (53903 inhabitants)
84 Km E of La Spezia (93959 inhabitants)
88 Km W of Faenza (58541 inhabitants)
89 Km S of Carpi (70699 inhabitants)
97 Km W of Forlì (117913 inhabitants)
100 Km NW of Arezzo (99543 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 1.7 2020-03-25
04:20:35		 43.9858 10.869 53 2020-07-18
21:08:37		 Bollettino Sismico Italiano INGV 79620731
Reviewed
Rev100 		ML 1.7 2020-03-25
04:20:35		 44.085 10.8918 54 2020-03-25
04:32:05		 Sala Sismica INGV-Roma 77550141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-25 04:20:35 ± 0.34
Latitude 43.9858 ± 0.0216
Longitude 10.8690 ± 0.0175
Depth (km) 53 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79620731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2012
Semi-minor axis of confidence ellipse (meter) 1591
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 8
Circular confidence region, given by single value of horizontal uncertainty (meter) 2010.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.09982
Epicentral distance of station farthest from the epicenter (degree) 0.54499
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:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 79620731
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-24 16:37:17

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 77550141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-25 04:32:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RINC.HHN. 2020-03-25T04:20:56.65 0.3 undecidable manual S 100 59.9955 120 -0.49 61
GU.EQUI.HHN. 2020-03-25T04:20:56.33 0.3 undecidable manual S 290 60.495 119 -0.9 53
IV.RUFI.EHZ. 2020-03-25T04:20:55.48 0.3 undecidable manual S 108 53.7018 124 -0.51 61
IV.PII.HHZ. 2020-03-25T04:20:54.39 0.3 undecidable manual S 223 40.2264 134 0.67 61
IV.RONT.HHN. 2020-03-25T04:20:54.22 0.6 undecidable manual S 89 45.0216 130 -0.27 44
GU.SARM.EHN. 2020-03-25T04:20:53.86 0.6 undecidable manual S 301 43.3233 132 -0.35 44
GU.CARD.HHZ. 2020-03-25T04:20:52.17 0.3 undecidable manual S 278 31.1466 143 -0.26 69
GU.MAIM.HHZ. 2020-03-25T04:20:52.45 0.3 undecidable manual S 255 31.1466 143 0.03 73
IV.MPPT.EHN. 2020-03-25T04:20:51.29 0.6 undecidable manual S 100 17.9709 157 0.3 47
IV.BDI.HNZ. 2020-03-25T04:20:51.25 0.1 undecidable manual S 291 23.4543 151 -0.26 93
GU.POPM.HHZ. 2020-03-25T04:20:50.66 0.3 undecidable manual S 306 11.0778 166 0.14 74
GU.EQUI.HHN. 2020-03-25T04:20:47.97 0.1 undecidable manual P 290 60.495 119 -0.26 88
IV.RUFI.EHZ. 2020-03-25T04:20:47.39 0.3 undecidable manual P 108 53.7018 124 -0.13 68
GU.GSCL.HHN. 2020-03-25T04:20:47.76 0.3 undecidable manual P 331 46.2204 129 1 52
IV.RINC.HHN. 2020-03-25T04:20:47.79 0.3 undecidable manual P 100 59.9955 120 -0.39 63
IV.ZCCA.HNN. 2020-03-25T04:20:47.45 0.1 undecidable manual P 12 41.3253 133 1.14 66
IV.RONT.HHN. 2020-03-25T04:20:46.96 0.3 undecidable manual P 89 45.0216 130 0.31 67
GU.SARM.EHN. 2020-03-25T04:20:46.32 0.3 undecidable manual P 301 43.3233 132 -0.17 69
IV.PII.HHZ. 2020-03-25T04:20:46.68 0.3 undecidable manual P 223 40.2264 134 0.47 65
GU.CARD.HHZ. 2020-03-25T04:20:45.31 0.1 positive manual P 278 31.1466 143 -0.15 94
GU.MAIM.HHZ. 2020-03-25T04:20:45.78 0.3 undecidable manual P 255 31.1466 143 0.32 68
IV.BDI.HNZ. 2020-03-25T04:20:44.66 0.1 undecidable manual P 291 23.4543 151 -0.27 93
IV.MPPT.EHN. 2020-03-25T04:20:44.84 0.1 undecidable manual P 100 17.9709 157 0.21 96
GU.POPM.HHZ. 2020-03-25T04:20:44.35 0.1 undecidable manual P 306 11.0778 166 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.POPM.HHN. ML:1.4 0.00006649376500000001 0.1792 AML other m 2020-03-25T04:20:50.74
GU.POPM.HHE. ML:1.5 0.00007796413499999999 0.2208 AML other m 2020-03-25T04:20:50.99
GU.CARD.HHN. ML:1.6 0.000078832975 0.0576 AML other m 2020-03-25T04:20:52.29
GU.CARD.HHE. ML:1.9 0.00016053590000000002 0.0992 AML other m 2020-03-25T04:20:52.38
IV.PII.HHN. ML:1.7 0.00009801637499999998 0.2208 AML other m 2020-03-25T04:20:54.75
IV.PII.HHE. ML:1.9 0.000132283855 1.76 AML other m 2020-03-25T04:20:54.95
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