Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 25-04-2023 and time 22:14:00 (UTC) in region 3 km SE Montieri (GR)

A magnitude ML 1.7 earthquake occured in region: 3 km SE Montieri (GR), on

  • 25-04-2023 22:14:00 (UTC)
  • 26-04-2023 00:14:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1180, 11.0450 at 11 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
Montieri GR 3 1204 1204
Chiusdino SI 6 1903 3107
Monticiano SI 11 1571 4678
Massa Marittima GR 15 8375 13053
Castelnuovo di Val di Cecina PI 15 2231 15284
Roccastrada GR 15 9199 24483
Monterotondo Marittimo GR 16 1371 25854
Radicondoli SI 16 914 26768

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km SW of Siena (53903 inhabitants)
40 Km N of Grosseto (82087 inhabitants)
72 Km S of Scandicci (50609 inhabitants)
75 Km S of Firenze (382808 inhabitants)
77 Km SE of Livorno (159219 inhabitants)
78 Km SW of Arezzo (99543 inhabitants)
85 Km SE of Pisa (89158 inhabitants)
85 Km S of Prato (191150 inhabitants)
91 Km S of Pistoia (90315 inhabitants)
92 Km SE of Lucca (89046 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 2023-04-25
22:14:00		 43.1175 11.0453 11 2024-03-01
17:18:19		 Bollettino Sismico Italiano INGV 124658301
Reviewed
Rev100 		ML 1.9 2023-04-25
22:14:00		 43.1147 11.0477 11 2023-04-25
22:22:40		 Sala Sismica INGV-Roma 116751971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-25 22:14:00 ± 0.1
Latitude 43.1175 ± 0.0045
Longitude 11.0453 ± 0.0099
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 124658301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 737
Semi-minor axis of confidence ellipse (meter) 380
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 245
Circular confidence region, given by single value of horizontal uncertainty (meter) 740.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.10432
Epicentral distance of station farthest from the epicenter (degree) 1.07199
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 52
Type of magnitude ML
Reference to an origin 124658301
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-01-30 13:43:37

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 116751971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-25 22:22:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRMI.HHZ. 2023-04-25T22:14:22.37 0.6 undecidable manual S 356 75.369 50 -0.6 40
IV.LMD.HHZ. 2023-04-25T22:14:20.70 0.6 undecidable manual P 26 118.992 50 0.59 37
IV.SFI.EHZ. 2023-04-25T22:14:19.21 0.3 undecidable manual P 36 108.5136 50 0.71 54
IV.MCIV.CHZ. 2023-04-25T22:14:19.20 0.6 undecidable manual S 126 63.5919 50 -0.61 41
GU.POPM.HHZ. 2023-04-25T22:14:18.32 0.3 undecidable manual P 347 105.5166 50 0.3 62
IV.SEI.HHZ. 2023-04-25T22:14:18.86 0.6 undecidable manual P 14 106.9152 50 0.61 38
GU.CARD.HHZ. 2023-04-25T22:14:18.73 0.6 undecidable manual P 336 110.5005 50 -0.07 43
IV.BDI.HHZ. 2023-04-25T22:14:18.91 0.6 undecidable manual P 341 110.9001 50 0.04 43
IV.VMGN.HHZ. 2023-04-25T22:14:17.92 0.6 undecidable manual P 23 100.8213 50 0.62 38
GU.MAIM.HHZ. 2023-04-25T22:14:17.01 0.6 undecidable manual P 333 98.8233 50 0 44
TV.SF11.HHZ. 2023-04-25T22:14:17.89 0.3 undecidable manual S 118 58.3971 50 -0.53 64
IV.MPPT.EHZ. 2023-04-25T22:14:16.24 0.3 undecidable manual P 2 93.24 50 0.1 66
IV.CRE.HHZ. 2023-04-25T22:14:16.42 1.0 undecidable manual P 52 91.8414 50 0.5 20
IV.OSSC.HHZ. 2023-04-25T22:14:15.00 0.6 undecidable manual S 20 47.8188 50 -0.62 42
IV.RUFI.EHZ. 2023-04-25T22:14:15.66 0.3 undecidable manual P 25 88.245 50 0.29 64
IV.ARCI.HHZ. 2023-04-25T22:14:14.80 0.3 undecidable manual S 130 45.621 50 -0.24 70
IV.CAFI.HHZ. 2023-04-25T22:14:14.17 0.3 undecidable manual P 72 78.0663 50 0.37 64
IV.PII.HHZ. 2023-04-25T22:14:14.03 0.3 undecidable manual P 328 79.0653 50 0.07 68
IV.CELB.HHZ. 2023-04-25T22:14:14.76 0.6 undecidable manual P 239 79.2651 50 0.76 37
IV.CASP.HHZ. 2023-04-25T22:14:13.02 0.3 undecidable manual S 202 39.1275 50 -0.25 71
IV.CSNT.HHZ. 2023-04-25T22:14:13.66 0.6 undecidable manual S 27 44.1225 50 -0.96 36
IV.CRMI.HHZ. 2023-04-25T22:14:13.38 0.3 undecidable manual P 356 75.369 50 -0.01 69
IV.MALA4.EHE. 2023-04-25T22:14:12.50 0.3 undecidable manual S 109 37.1295 50 -0.26 71
IV.MCIV.CHZ. 2023-04-25T22:14:12.20 0.1 positive manual P 126 63.5919 50 0.64 81
IV.MALA2.EHZ. 2023-04-25T22:14:12.51 0.3 undecidable manual S 110 37.3293 50 -0.29 70
IV.MALA5.EHE. 2023-04-25T22:14:12.34 0.3 undecidable manual S 109 37.1295 50 -0.41 68
IV.MALA0.EHE. 2023-04-25T22:14:12.30 0.3 undecidable manual S 109 36.8298 50 -0.39 69
IV.MALA1.EHE. 2023-04-25T22:14:12.51 0.6 undecidable manual S 110 37.1295 50 -0.26 47
TV.SF11.HHZ. 2023-04-25T22:14:11.32 0.3 undecidable manual P 118 58.3971 50 0.56 63
IV.ARCI.HHZ. 2023-04-25T22:14:09.20 0.1 positive manual P 130 45.621 50 0.39 90
IV.OSSC.HHZ. 2023-04-25T22:14:08.93 0.1 positive manual P 20 47.8188 50 -0.22 93
IV.CASP.HHZ. 2023-04-25T22:14:08.02 0.3 undecidable manual P 202 39.1275 50 0.23 71
IV.CSNT.HHZ. 2023-04-25T22:14:08.30 0.1 positive manual P 27 44.1225 50 -0.27 93
IV.MALA5.EHE. 2023-04-25T22:14:07.59 0.1 positive manual P 109 37.1295 50 0.1 98
IV.MALA0.EHE. 2023-04-25T22:14:07.57 0.1 positive manual P 109 36.8298 50 0.12 97
IV.MALA1.EHE. 2023-04-25T22:14:07.62 0.1 positive manual P 110 37.1295 50 0.12 97
IV.MALA4.EHE. 2023-04-25T22:14:07.59 0.1 positive manual P 109 37.1295 50 0.09 98
IV.RIBO.EHZ.01 2023-04-25T22:14:07.80 0.3 undecidable manual S 180 18.6702 120 0.02 77
IV.MALA2.EHZ. 2023-04-25T22:14:07.64 0.1 positive manual P 110 37.3293 50 0.12 97
IV.RIBO.EHZ.01 2023-04-25T22:14:04.76 0.1 positive manual P 180 18.6702 120 0.14 100
IV.TRIF.CHE. 2023-04-25T22:14:04.60 0.3 undecidable manual S 269 11.5773 133 -1.17 52
IV.TRIF.CHE. 2023-04-25T22:14:03.06 0.3 undecidable manual P 269 11.5773 133 -0.4 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RIBO.EHN.01 ML:2.4 0.0019682655 0.0768 AML other m 2023-04-25T22:14:08.18
IV.RIBO.EHE.01 ML:2.2 0.001261612 0.1152 AML other m 2023-04-25T22:14:10.61
IV.MALA2.EHN. ML:1.7 0.00018509710000000001 0.1408 AML other m 2023-04-25T22:14:13.03
IV.CSNT.HHN. ML:2.1 0.000384 1.84 AML other m 2023-04-25T22:14:13.93
IV.MALA2.EHE. ML:1.7 0.00018981595000000002 0.1152 AML other m 2023-04-25T22:14:14.06
IV.CSNT.HHE. ML:2.0 0.000338 1.88 AML other m 2023-04-25T22:14:14.98
IV.CAFI.HHE. ML:1.2 0.00002465483 1.7408 AML other m 2023-04-25T22:14:13.41
IV.ARCI.HHE. ML:1.9 0.00023376635 0.1152 AML other m 2023-04-25T22:14:15.30
IV.OSSC.HHE. ML:1.7 0.00013143175 0.192 AML other m 2023-04-25T22:14:15.55
IV.OSSC.HHN. ML:1.7 0.00012693290499999997 0.2432 AML other m 2023-04-25T22:14:15.59
IV.ARCI.HHN. ML:2.2 0.0004485 0.16 AML other m 2023-04-25T22:14:15.88
IV.ARCI.HNN. ML:2.2 0.00042271655 0.1664 AML other m 2023-04-25T22:14:15.89
IV.ARCI.HNE. ML:1.9 0.0002172194 0.1152 AML other m 2023-04-25T22:14:16.38
IV.SFI.HNN. ML:2.2 0.00015211575 0.9728 AML other m 2023-04-25T22:14:20.06
IV.MCIV.CHN. ML:1.8 0.00011949999999999999 0.2 AML other m 2023-04-25T22:14:21.68
IV.MCIV.CHE. ML:1.8 0.00012245 0.24 AML other m 2023-04-25T22:14:22.87
IV.PII.HHE. ML:1.8 0.0000963929 0.256 AML other m 2023-04-25T22:14:23.92
IV.PII.HHN. ML:1.8 0.00009746962 0.32 AML other m 2023-04-25T22:14:24.38
IV.CRMI.HHN. ML:1.3 0.000029026240000000003 0.2304 AML other m 2023-04-25T22:14:24.38
IV.CELB.HHE. ML:2.3 0.00027763125 0.0512 AML other m 2023-04-25T22:14:25.75
IV.CAFI.HNE. ML:1.6 0.000048405555 0.8704 AML other m 2023-04-25T22:14:26.90
IV.CELB.HHN. ML:2.1 0.00016259933000000002 0.1792 AML other m 2023-04-25T22:14:26.63
IV.CRMI.HHE. ML:1.4 0.000033700435 1.088 AML other m 2023-04-25T22:14:27.28
IV.CRMI.HNN. ML:2.3 0.0002767986 1.2032 AML other m 2023-04-25T22:14:27.80
IV.RUFI.EHE. ML:1.4 0.000031746140999999996 0.3968 AML other m 2023-04-25T22:14:29.25
IV.CAFI.HHN. ML:1.0 0.0000168781925 0.5504 AML other m 2023-04-25T22:14:29.17
IV.CAFI.HNN. ML:1.6 0.00005019998225 1.024 AML other m 2023-04-25T22:14:29.70
IV.CRE.HHN. ML:1.4 0.00003010744 0.32 AML other m 2023-04-25T22:14:31.43
IV.MPPT.EHE. ML:1.4 0.000023725059999999998 0.7808 AML other m 2023-04-25T22:14:32.90
IV.CRE.HHE. ML:1.4 0.0000290379235 0.64 AML other m 2023-04-25T22:14:32.99
GU.POPM.HHE. ML:1.8 0.00006135 0.22 AML other m 2023-04-25T22:14:33.66
IV.SFI.HNE. ML:2.1 0.00009966334 0.7296 AML other m 2023-04-25T22:14:34.69
IV.CRMI.HNE. ML:2.0 0.00013278773999999999 0.5632 AML other m 2023-04-25T22:14:34.62
GU.CARD.HHE. ML:1.5 0.000025085700000000003 0.1792 AML other m 2023-04-25T22:14:35.60
GU.CARD.HHN. ML:1.6 0.00002768097 0.2304 AML other m 2023-04-25T22:14:35.76
GU.POPM.HHN. ML:1.5 0.000032109812 0.3584 AML other m 2023-04-25T22:14:35.97
IV.VMGN.HHN. ML:1.5 0.000030394275000000003 0.8448 AML other m 2023-04-25T22:14:36.61
IV.BDI.HNE. ML:2.2 0.00012091825 0.7296 AML other m 2023-04-25T22:14:38.11
IV.SEI.HHN. ML:2.0 0.00008199999999999999 1.66 AML other m 2023-04-25T22:14:37.02
IV.LMD.HHE. ML:1.4 0.00001801544 0.3712 AML other m 2023-04-25T22:14:37.74
IV.VMGN.HHE. ML:1.4 0.000026135685 0.576 AML other m 2023-04-25T22:14:39.37
GU.MAIM.HHE. ML:1.6 0.000039744715 1.216 AML other m 2023-04-25T22:14:38.62
IV.SEI.HHE. ML:1.6 0.00004125 1.3 AML other m 2023-04-25T22:14:42.06
IV.BDI.HHE. ML:1.6 0.00002766988 1.1008 AML other m 2023-04-25T22:14:43.67
GU.MAIM.HHN. ML:1.7 0.000048465045 1.9456 AML other m 2023-04-25T22:14:44.77
IV.RUFI.EHN. ML:1.4 0.000032341404500000004 1.3952 AML other m 2023-04-25T22:14:45.47
IV.BDI.HHN. ML:1.7 0.000041793995 1.4848 AML other m 2023-04-25T22:14:49.96
IV.MPPT.EHN. ML:1.5 0.000033250630000000005 1.7664 AML other m 2023-04-25T22:14:50.98
IV.SFI.EHN. ML:1.5 0.00002329664 1.9072 AML other m 2023-04-25T22:14:50.47
IV.BDI.HNN. ML:2.2 0.00013562380000000003 0.9216 AML other m 2023-04-25T22:14:52.10
IV.SFI.EHE. ML:1.5 0.00002278696 1.3952 AML other m 2023-04-25T22:14:53.57
IV.LMD.HHN. ML:1.7 0.000036708375 2.8416 AML other m 2023-04-25T22:15:01.60
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