Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.3 on date 21-05-2014 and time 19:24:46 (UTC) in region 6 km W Pietralunga (PG)

A magnitude ML 0.3 earthquake occured in region: 6 km W Pietralunga (PG), on

  • 21-05-2014 19:24:46 (UTC)
  • 21-05-2014 21:24:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4590, 12.3700 at 7 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.

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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
Pietralunga PG 6 2111 2111
Città di Castello PG 11 39913 42024
Montone PG 11 1680 43704
Apecchio PU 12 1882 45586
Monte Santa Maria Tiberina PG 17 1183 46769
Umbertide PG 17 16681 63450
Piobbico PU 19 2029 65479
San Giustino PG 19 11297 76776

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km N of Perugia (166134 inhabitants)
39 Km E of Arezzo (99543 inhabitants)
62 Km NW of Foligno (57155 inhabitants)
67 Km SW of Pesaro (94582 inhabitants)
68 Km SW of Fano (60888 inhabitants)
69 Km S of Rimini (147750 inhabitants)
76 Km S of Cesena (96758 inhabitants)
85 Km E of Siena (53903 inhabitants)
89 Km SE of Forlì (117913 inhabitants)
94 Km W of Ancona (100861 inhabitants)
96 Km E of Firenze (382808 inhabitants)
100 Km SE of Faenza (58541 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
Reviewed
Rev100 		ML 0.3 2014-05-21
19:24:46		 43.4592 12.37 7 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 6556191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2014-05-21 19:24:46 ± 0.21
Latitude 43.4592 ± 0.0063
Longitude 12.3700 ± 0.0173
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 6556191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1509
Semi-minor axis of confidence ellipse (meter) 235
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 110
Circular confidence region, given by single value of horizontal uncertainty (meter) 1510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 244
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.33725
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.3
Num. used stations 2
Type of magnitude ML
Reference to an origin 6556191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2014-05-21 19:37:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CDRU.HHZ. 2014-05-21T19:26:31.99 3.0 undecidable manual Sg 14.27 0
CR.STON.BHZ. 2014-05-21T19:26:25.99 3.0 undecidable manual Sn -2.67 0
IV.MTGR.SHZ. 2014-05-21T19:26:21.94 3.0 negative manual Pg 20.76 0
IV.GALF.HHZ. 2014-05-21T19:26:20.53 3.0 positive manual Pg 13.45 0
IV.MONC.HHZ. 2014-05-21T19:26:18.99 3.0 undecidable manual Sn -4.57 0
IV.GRI.EHZ. 2014-05-21T19:25:58.76 3.0 negative manual Pn -3.03 0
IV.MSSA.HHZ. 2014-05-21T19:25:50.99 3.0 undecidable manual Sn 1.13 0
IV.MNTV.HNZ. 2014-05-21T19:25:48.99 3.0 undecidable manual Sg 1.09 0
BA.PZUN.HHZ. 2014-05-21T19:25:39.54 3.0 negative manual Pn 1.35 0
IV.MA9.HHZ. 2014-05-21T19:25:25.99 3.0 undecidable manual Sn -2.02 0
IV.FIAM.HHZ. 2014-05-21T19:25:23.99 3.0 undecidable manual Sg 4.79 0
IV.CTL8.EHZ. 2014-05-21T19:25:22.75 3.0 negative manual Pn -3.98 0
IV.TERO.HHZ. 2014-05-21T19:25:03.34 3.0 positive manual Pn 0.01 0
IV.ATCC.EHZ. 2014-05-21T19:24:53.84 1.0 undecidable manual P 144 37.4292 101 -0.3 22
IV.PIEI.HHZ. 2014-05-21T19:24:52.62 0.3 undecidable manual S 57 15.7731 114 0.11 73
IV.NARO.HHZ. 2014-05-21T19:24:51.30 0.3 undecidable manual P 45 23.8539 106 -0.21 70
IV.PIEI.HHZ. 2014-05-21T19:24:50.02 0.1 undecidable manual P 57 15.7731 114 0.05 98
IV.ATVO.HHZ. 2014-05-21T19:24:50.45 0.1 undecidable manual S 161 9.0798 128 -0.03 100
IV.ATPI.EHZ. 2014-05-21T19:24:49.04 0.1 undecidable manual S 110 2.7972 158 -0.09 100
IV.ATPI.EHZ. 2014-05-21T19:24:48.10 0.1 undecidable manual P 110 2.7972 158 0.08 100
IV.ATVO.HHZ. 2014-05-21T19:24:48.94 0.1 undecidable manual P 161 9.0798 128 0.13 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHN. ML:0.4 0.0000438 0.16 AML other m 2014-05-21T19:24:50.52
IV.ATVO.HHE. ML:0.7 0.0000844 0.12 AML other m 2014-05-21T19:24:50.72
IV.PIEI.HHN. ML:0.0 0.00001205 0.34 AML other m 2014-05-21T19:24:53.06
IV.PIEI.HHE. ML:0.0 0.000012285 0.88 AML other m 2014-05-21T19:24:53.10
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