ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 0.2 on date 28-02-2019 and time 10:22:14 (Italy) in region 4 km E Norcia (PG)

A magnitude ML 0.2 earthquake occured in region: 4 km E Norcia (PG), on

  • 28-02-2019 09:22:14 (UTC)
  • 28-02-2019 10:22:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8, 13.14 at 9 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Norcia PG 4 4957 4957
Castelsantangelo sul Nera MC 10 281 5238
Preci PG 12 724 5962
Cascia PG 14 3217 9179
Arquata del Tronto AP 14 1178 10357
Visso MC 15 1107 11464
Accumoli RI 15 667 12131
Ussita MC 16 444 12575
Montegallo AP 17 523 13098
Cerreto di Spoleto PG 18 1075 14173
Montemonaco AP 19 604 14777
Poggiodomo PG 19 117 14894
Sellano PG 19 1079 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
70 Km E of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
96 Km W of Pescara (121014 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
98 Km NW of Chieti (51815 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 0.2 2019-02-28
09:22:14
42.8 13.14 9 2019-02-28
09:30:39
Sala Sismica INGV-Roma 66043291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-28 09:22:14 ± 0.1
Latitude 42.80 ± 0.01
Longitude 13.14 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66043291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 763
Semi-minor axis of confidence ellipse (meter) 355
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 303
Circular confidence region, given by single value of horizontal uncertainty (meter) 760
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 143
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 13
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
Epicentral distance of station farthest from the epicenter (degree) 0.41369
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.2

Field Value
Value 0.2
Uncertainty 0
Num. used stations 2
Type of magnitude ML
Reference to an origin 66043291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-28 09:30:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CR.STON.BHZ. 2019-02-28T09:23:55.50 3.0 undecidable manual Sg 17.57 0
IV.MNTV.HNZ. 2019-02-28T09:23:47.17 3.0 undecidable manual Sg 3.44 0
GU.SARM.EHZ. 2019-02-28T09:23:30.00 3.0 undecidable manual Sg -0.93 0
IV.EUCT.HNZ. 2019-02-28T09:23:19.48 3.0 undecidable manual Pg 4.27 0
IV.CAGR.HHZ. 2019-02-28T09:23:17.05 3.0 undecidable manual Pn -4.76 0
IV.BLLA.EHZ. 2019-02-28T09:22:59.28 3.0 undecidable manual Sn -8.75 0
IV.NARO.HHZ. 2019-02-28T09:22:31.98 3.0 undecidable manual Pg -4.72 0
IV.FDMO.HHZ. 2019-02-28T09:22:24.37 0.6 undecidable manual S 351 0.2356 109 -0.2 48
IV.T1299.EHZ. 2019-02-28T09:22:23.47 3.0 undecidable manual P 0
IV.GAVE.EHE. 2019-02-28T09:22:23.62 0.6 undecidable manual S 238 0.2086 111 0.02 50
IV.MNTP.HNE. 2019-02-28T09:22:23.76 0.1 undecidable manual P 36 0.4137 50 -0.02 96
IV.LNSS.HHE. 2019-02-28T09:22:23.82 0.6 undecidable manual S 199 0.2122 110 0.1 49
IV.LPEL.HHZ. 2019-02-28T09:22:23.45 3.0 undecidable manual P -1.62 0
IV.MMO1.EHE. 2019-02-28T09:22:22.24 0.6 undecidable manual S 56 0.17 115 0.02 51
IV.LRP.EHZ. 2019-02-28T09:22:21.76 3.0 negative manual P -4.03 0
IV.MC2.EHZ. 2019-02-28T09:22:20.67 0.6 undecidable manual S 20 0.1151 125 0.3 48
IV.GAVE.EHE. 2019-02-28T09:22:20.18 0.1 undecidable manual P 238 0.2086 111 0.22 96
IV.FDMO.HHZ. 2019-02-28T09:22:20.30 0.6 negative manual P 351 0.2356 109 -0.22 48
IV.MMO1.EHE. 2019-02-28T09:22:19.09 0.1 undecidable manual P 56 0.17 115 -0.08 100
IV.LNSS.HHE. 2019-02-28T09:22:19.75 0.1 undecidable manual P 199 0.2122 110 -0.28 95
IV.MC2.EHZ. 2019-02-28T09:22:18.43 0.6 negative manual P 20 0.1151 125 0.33 48
IV.NRCA.HHZ. 2019-02-28T09:22:17.12 0.1 undecidable manual P 333 0.0342 157 0.21 100
IV.NRCA.HHZ. 2019-02-28T09:22:17.87 0.6 undecidable manual S 333 0.0342 157 -0.44 47
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0 0.00023304175 0.1024 AML other m 2019-02-28T09:22:19.02
IV.NRCA.HHN. ML:0 0.00029666475 0.1408 AML other m 2019-02-28T09:22:18.41
IV.FDMO.HHE. ML:0.2 7.71655585E-6 0.16 AML other m 2019-02-28T09:22:24.86
IV.FDMO.HHN. ML:0.2 9.9752845E-6 0.1408 AML other m 2019-02-28T09:22:25.12
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