Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 30-10-2016 and time 12:25:50 (UTC) in region 4 km S Preci (PG)

A magnitude ML 2.5 earthquake occured in region: 4 km S Preci (PG), on

  • 30-10-2016 12:25:50 (UTC)
  • 30-10-2016 13:25:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8470, 13.0500 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
Preci PG 4 724 724
Norcia PG 7 4957 5681
Visso MC 10 1107 6788
Castelsantangelo sul Nera MC 10 281 7069
Sellano PG 11 1079 8148
Cerreto di Spoleto PG 11 1075 9223
Ussita MC 13 444 9667
Cascia PG 15 3217 12884
Monte Cavallo MC 17 145 13029
Vallo di Nera PG 18 364 13393
Poggiodomo PG 18 117 13510

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
57 Km W of Teramo (54892 inhabitants)
61 Km E of Perugia (166134 inhabitants)
62 Km NW of L'Aquila (69753 inhabitants)
91 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
97 Km W of Montesilvano (53738 inhabitants)
98 Km N of Guidonia Montecelio (88673 inhabitants)
100 Km N of Tivoli (56533 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 2.5 2016-10-30
12:25:50		 42.8468 13.05 11 2019-02-12
14:03:08		 Bollettino Sismico Italiano INGV 39703881
Reviewed
Rev100 		ML 3.6 2016-10-30
12:26:17		 42.9313 13.1967 8 2016-10-30
12:43:07		 Sala Sismica INGV-Roma 31067351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-30 12:25:50 ± 0.06
Latitude 42.8468 ± 0.0027
Longitude 13.0500 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 39703881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 332
Semi-minor axis of confidence ellipse (meter) 318
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 314
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
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) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.10162
Epicentral distance of station farthest from the epicenter (degree) 0.63402
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:3.6

Field Value
Value 3.6
Uncertainty 0.3
Num. used stations 27
Type of magnitude ML
Reference to an origin 31067351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-10-30 12:43:05

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 39703881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-01-24 14:34:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIAM.HHZ. 2016-10-30T12:26:11.52 0.6 undecidable manual S 175 64.491 50 0.78 39
IV.GIGS.HHZ. 2016-10-30T12:26:09.48 0.6 undecidable manual S 135 61.0944 50 -0.35 45
IV.TERO.HHZ. 2016-10-30T12:26:06.88 0.6 undecidable manual S 119 51.5151 50 -0.41 45
IV.T1247.HHZ. 2016-10-30T12:26:06.82 0.6 undecidable manual S 156 49.3173 50 0.12 48
IV.CAMP.HHZ. 2016-10-30T12:26:05.42 0.6 undecidable manual S 140 45.2214 50 -0.19 48
IV.RM33.EHZ. 2016-10-30T12:26:04.02 0.6 undecidable manual S 160 39.8268 50 -0.14 49
IV.T1211.EHZ. 2016-10-30T12:26:04.04 0.6 undecidable manual S 205 38.3283 50 0.28 48
IV.MDAR.HNN. 2016-10-30T12:26:04.09 0.6 undecidable manual S 11 39.1275 50 0.12 49
IV.ARRO.EHZ. 2016-10-30T12:26:03.54 0.6 undecidable manual S 218 37.629 50 -0.05 50
IV.TRTR.HHZ. 2016-10-30T12:26:03.04 0.3 undecidable manual P 93 70.374 50 -0.27 67
IV.T1243.HNZ. 2016-10-30T12:26:03.10 0.6 undecidable manual S 117 36.4413 50 -0.17 49
IV.ASSB.HHZ. 2016-10-30T12:26:03.78 0.6 undecidable manual S 304 38.5281 50 -0.03 50
IV.T1241.EHZ. 2016-10-30T12:26:02.13 0.6 undecidable manual S 88 31.0467 50 0.31 48
IV.FIAM.HHZ. 2016-10-30T12:26:02.35 0.3 undecidable manual P 175 64.491 50 -0.03 72
IV.T1204.EHZ. 2016-10-30T12:26:01.14 0.6 undecidable manual S 131 28.8489 50 -0.09 50
IV.OFFI.HHZ. 2016-10-30T12:26:01.42 0.3 undecidable manual P 79 52.6029 50 0.86 57
XO.AM05.HNZ. 2016-10-30T12:26:01.01 0.3 undecidable manual S 59 28.5492 50 -0.14 75
IV.GIGS.HHZ. 2016-10-30T12:26:01.95 0.6 undecidable manual P 135 61.0944 50 0.09 48
IV.T1201.HNN. 2016-10-30T12:26:01.05 0.6 undecidable manual S 142 26.6511 50 0.41 47
IV.TERO.HHZ. 2016-10-30T12:26:00.26 0.3 undecidable manual P 119 51.5151 50 -0.13 72
IV.LNSS.HHZ. 2016-10-30T12:26:00.54 0.6 undecidable manual S 182 27.0507 50 -0.22 49
IV.CAMP.HHZ. 2016-10-30T12:25:59.78 0.3 undecidable manual P 140 45.2214 50 0.35 69
IV.T1247.HHZ. 2016-10-30T12:25:59.86 0.3 undecidable manual P 156 49.3173 50 -0.19 71
IV.ASSB.HHZ. 2016-10-30T12:25:58.42 0.6 undecidable manual P 304 38.5281 50 0.04 50
IV.ARRO.EHZ. 2016-10-30T12:25:58.26 0.3 undecidable manual P 218 37.629 50 0 76
IV.RM33.EHZ. 2016-10-30T12:25:58.49 0.3 undecidable manual P 160 39.8268 50 -0.1 74
IV.T1211.EHZ. 2016-10-30T12:25:58.42 0.3 undecidable manual P 205 38.3283 50 0.07 75
IV.T1217.HNZ. 2016-10-30T12:25:57.97 0.6 undecidable manual S 213 17.7711 121 -0.2 50
IV.T1241.EHZ. 2016-10-30T12:25:57.49 0.3 undecidable manual P 88 31.0467 50 0.25 73
IV.T1215.EHZ. 2016-10-30T12:25:57.35 0.6 undecidable manual S 251 15.5733 124 -0.17 51
IV.MDAR.HNN. 2016-10-30T12:25:57.67 0.3 undecidable manual P 11 39.1275 50 -0.81 60
IV.T1243.HNZ. 2016-10-30T12:25:57.92 0.3 undecidable manual P 117 36.4413 50 -0.15 74
IV.T1201.HNN. 2016-10-30T12:25:56.70 0.1 undecidable manual P 142 26.6511 50 0.14 100
IV.T1204.EHZ. 2016-10-30T12:25:56.77 0.1 undecidable manual P 131 28.8489 50 -0.13 100
XO.AM05.HNZ. 2016-10-30T12:25:56.92 0.3 undecidable manual P 59 28.5492 50 0.07 76
IV.T1245.HNZ. 2016-10-30T12:25:56.27 0.3 undecidable manual S 84 11.2776 133 -0.08 78
IV.FEMA.HNZ. 2016-10-30T12:25:56.92 0.6 undecidable manual S 360 12.7761 130 0.18 51
IV.LNSS.HHZ. 2016-10-30T12:25:56.48 0.6 undecidable manual P 182 27.0507 50 -0.15 50
IV.T1217.HNZ. 2016-10-30T12:25:55.12 1.0 undecidable manual P 213 17.7711 121 -0.01 26
IV.T1245.HNZ. 2016-10-30T12:25:54.16 0.6 undecidable manual P 84 11.2776 133 0.08 52
IV.FEMA.HNZ. 2016-10-30T12:25:54.40 0.3 undecidable manual P 360 12.7761 130 0.09 78
IV.T1215.EHZ. 2016-10-30T12:25:54.87 0.3 undecidable manual P 251 15.5733 124 0.12 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:2.3 0.0007867874 0.2752 AML other m 2016-10-30T12:26:04.11
IV.LNSS.HHE. ML:2.3 0.0010534535 0.1024 AML other m 2016-10-30T12:26:00.93
IV.RM33.HNE. ML:2.6 0.0014396914999999998 0.352 AML other m 2016-10-30T12:26:04.00
IV.T1204.EHE. ML:2.8 0.0028488464 0.1984 AML other m 2016-10-30T12:26:01.37
IV.T1215.HNE. ML:2.2 0.0014759880000000001 0.16 AML other m 2016-10-30T12:25:57.39
IV.T1217.HNN. ML:2.4 0.0021807435000000003 0.16 AML other m 2016-10-30T12:25:58.23
IV.T1245.HHN. ML:2.9 0.0091442285 0.1408 AML other m 2016-10-30T12:25:56.99
TDMT - Time Domain Moment Tensor

TDMT details

Field Value
Magnitude3.6
Scalar Moment2.97772E+21 dyne-cm
Computed depth2 km
QualityBb
Variance Reduction44.75%
Double Couple59%
CLVD41%
ISO0%
Model usedCIA
Modeautomatic
Statuspreliminary

Moment Tensor Components

Component Value
Mrr-2.6183E+21
Mtt1.0318E+21
Mpp1.5865E+21
Mrt7.45E+19
Mrp-2.685E+20
Mtp-1.9799E+21

Nodal Planes

Name Strike Dip Rake
PN132248-85
PN213543-95

Fault Plane solution

Focal Mechanism

psmeca (GMT documentation)

13.1967 42.9313 2 322 48 -85 135 43 -95 2.97772 21 13.6967 43.4313

TDMT references

More info and references

PDF Solution

Download TDMT soution in PDF format
Download TDMT soution in PDF format

Station Distribution

Station Distribution

TDMT station details

Sta Dist Azi V R zcor
RNI2 157.5 149.7 11.14% 111
VVLD 123 163.3 19.11% 106
GIUL 152.6 178.2 52.43% 108
CERT 110.5 189.3 59.78% 104
MTCE 107.6 200.5 66.35% 103
SRES 95.5 216.4 62.49% 103
MCIV 125.4 262.7 34.81% 106
CAFI 109.4 294.2 58.1% 104
ARVD 66.3 341.9 54.83% 98
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
Waveforms Seismic signals in miniseed + resp format Download