Earthquake with magnitude of ML 0.4 on date 22-07-2019 and time 00:58:26 (Italy) in region 5 km N Pontremoli (MS)

A magnitude ML 0.4 earthquake occured in region: 5 km N Pontremoli (MS), on

  • 21-07-2019 22:58:26 (UTC)
  • 22-07-2019 00:58:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.42, 9.9 at 10 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Pontremoli MS 5 7357 7357
Filattiera MS 11 2309 9666
Mulazzo MS 12 2424 12090
Berceto PR 12 2109 14199
Borgo Val di Taro PR 12 6999 21198
Zeri MS 13 1094 22292
Bagnone MS 15 1887 24179
Villafranca in Lunigiana MS 15 4770 28949
Albareto PR 16 2156 31105
Valmozzola PR 16 539 31644
Corniglio PR 17 1936 33580
Monchio delle Corti PR 18 933 34513

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km N of La Spezia (93959 inhabitants)
42 Km NW of Carrara (63133 inhabitants)
47 Km NW of Massa (69479 inhabitants)
54 Km SW of Parma (192836 inhabitants)
66 Km W of Reggio nell'Emilia (171345 inhabitants)
68 Km NW of Viareggio (62467 inhabitants)
72 Km S of Piacenza (102191 inhabitants)
76 Km E of Genova (586655 inhabitants)
80 Km S of Cremona (71901 inhabitants)
81 Km NW of Lucca (89046 inhabitants)
85 Km W of Modena (184973 inhabitants)
88 Km W of Carpi (70699 inhabitants)
89 Km NW of Pisa (89158 inhabitants)
98 Km NW of Pistoia (90315 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
Rev 1000 ML 0.4 2019-07-21
22:58:26
44.43 9.9 10 2019-11-13
14:31:03
Bollettino Sismico Italiano INGV 72824211
Rev 100 ML 0.6 2019-07-21
22:58:25
44.57 9.82 10 2019-07-21
23:05:41
Sala Sismica INGV-Roma 70781911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-21 22:58:26 ± 0.18
Latitude 44.43 ± 0.02
Longitude 9.90 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 72824211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2120
Semi-minor axis of confidence ellipse (meter) 860
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 327
Circular confidence region, given by single value of horizontal uncertainty (meter) 2120
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 174
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.1385
Epicentral distance of station farthest from the epicenter (degree) 0.37682
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.5
Num. used stations 4
Type of magnitude ML
Reference to an origin 70781911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-21 23:05:41

ML:0.4

Field Value
Value 0.4
Uncertainty 0.5
Num. used stations 4
Type of magnitude ML
Reference to an origin 72824211
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-27 12:15:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PLMA.HHZ. 2019-07-21T22:58:40.01 0.6 undecidable manual S 185 0.3768 50 -0.45 45
IV.MSSA.HHZ. 2019-07-21T22:58:37.65 0.3 undecidable manual S 248 0.2914 50 -0.28 71
IV.PLMA.HHZ. 2019-07-21T22:58:35.05 0.3 undecidable manual P 185 0.3768 50 0.48 67
IV.MSSA.HHZ. 2019-07-21T22:58:33.24 0.1 undecidable manual P 248 0.2914 50 0.14 97
GU.GRAM.HHZ. 2019-07-21T22:58:32.53 0.3 undecidable manual S 62 0.1385 122 -0.27 73
GU.GRAM.HHZ. 2019-07-21T22:58:30.29 0.1 undecidable manual P 62 0.1385 122 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GRAM.HHN. ML:0.8 6.672801E-5 0.192 AML other m 2019-07-21T22:58:32.90
GU.GRAM.HHE. ML:0.8 6.2774735E-5 1.8336 AML other m 2019-07-21T22:58:34.93
IV.MSSA.HHN. ML:0 4.551713E-6 0.192 AML other m 2019-07-21T22:58:38.02
IV.MSSA.HHE. ML:0 5.0541915E-6 0.1152 AML other m 2019-07-21T22:58:38.55
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download