ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 1.1 on date 21-02-2019 and time 05:04:57 (Italy) in region 5 km NW Nocera Umbra (PG)

A magnitude ML 1.1 earthquake occured in region: 5 km NW Nocera Umbra (PG), on

  • 21-02-2019 04:04:57 (UTC)
  • 21-02-2019 05:04:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.15, 12.76 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
Nocera Umbra PG 5 5839 5839
Gualdo Tadino PG 10 15208 21047
Valtopina PG 10 1398 22445
Valfabbrica PG 13 3389 25834
Assisi PG 15 28299 54133
Fiuminata MC 15 1402 55535
Sefro MC 15 422 55957
Fossato di Vico PG 16 2840 58797
Serravalle di Chienti MC 18 1070 59867
Pioraco MC 19 1134 61001
Spello PG 19 8645 69646
Esanatoglia MC 19 2034 71680
Bastia Umbra PG 19 21874 93554

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km N of Foligno (57155 inhabitants)
31 Km E of Perugia (166134 inhabitants)
66 Km N of Terni (111501 inhabitants)
79 Km E of Arezzo (99543 inhabitants)
80 Km S of Fano (60888 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
86 Km S of Pesaro (94582 inhabitants)
94 Km NW of Teramo (54892 inhabitants)
97 Km NE of Viterbo (67173 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 1.1 2019-02-21
04:04:57
43.15 12.76 9 2019-02-21
04:17:11
Sala Sismica INGV-Roma 65751851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-21 04:04:57 ± 0.04
Latitude 43.15 ± 0.00
Longitude 12.76 ± 0.00
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 65751851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 283
Semi-minor axis of confidence ellipse (meter) 228
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 244
Circular confidence region, given by single value of horizontal uncertainty (meter) 280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 22
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
Epicentral distance of station farthest from the epicenter (degree) 0.41998
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 65751851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-21 04:17:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2019-02-21T04:05:17.52 3.0 positive manual P -0.3 0
IV.PIEI.HHZ. 2019-02-21T04:05:13.40 0.6 undecidable manual S 337 0.42 50 0.51 42
IV.NRCA.HHZ. 2019-02-21T04:05:12.60 0.6 undecidable manual S 140 0.4074 50 0.09 46
IV.FRON.EHZ. 2019-02-21T04:05:11.57 0.6 undecidable manual S 356 0.3696 50 0.17 46
IV.EL6.EHZ. 2019-02-21T04:05:09.84 0.6 undecidable manual S 54 0.3076 50 0.3 45
IV.SSFR.HHZ. 2019-02-21T04:05:08.80 0.6 undecidable manual S 3 0.2878 50 -0.17 47
IV.MURB.HHZ. 2019-02-21T04:05:06.36 0.6 undecidable manual S 304 0.2068 112 0.18 47
IV.PIEI.HHZ. 2019-02-21T04:05:06.44 0.1 undecidable manual P 337 0.42 50 0.01 94
IV.FRON.EHZ. 2019-02-21T04:05:05.63 1.0 undecidable manual P 356 0.3696 50 0.06 23
IV.NRCA.HHZ. 2019-02-21T04:05:05.93 0.1 undecidable manual P 140 0.4074 50 -0.28 89
IV.CESI.HHZ. 2019-02-21T04:05:05.31 0.6 undecidable manual S 144 0.1781 115 0.13 48
IV.EL6.EHZ. 2019-02-21T04:05:04.40 0.1 undecidable manual P 54 0.3076 50 -0.09 94
IV.SNTG.HHZ. 2019-02-21T04:05:04.96 0.6 undecidable manual S 51 0.1691 116 0.09 49
IV.ASSB.HHZ. 2019-02-21T04:05:03.65 0.1 undecidable manual S 215 0.1295 123 0.11 97
IV.FOSV.EHZ. 2019-02-21T04:05:03.96 0.6 undecidable manual S 0 0.1466 120 -0.14 48
IV.SSFR.HHZ. 2019-02-21T04:05:03.90 0.1 undecidable manual P 3 0.2878 50 -0.26 91
IV.CESI.HHZ. 2019-02-21T04:05:02.08 0.1 undecidable manual P 144 0.1781 115 0.11 97
IV.MURB.HHZ. 2019-02-21T04:05:02.54 0.1 undecidable manual P 304 0.2068 112 -0.01 98
IV.ATCC.EHZ. 2019-02-21T04:05:02.35 0.6 undecidable manual S 293 0.0953 131 -0.14 49
IV.SNTG.HHZ. 2019-02-21T04:05:01.83 0.1 undecidable manual P 51 0.1691 116 0.04 98
IV.FOSV.EHZ. 2019-02-21T04:05:01.31 0.1 undecidable manual P 0 0.1466 120 -0.04 98
IV.ATCC.EHZ. 2019-02-21T04:05:00.41 0.1 undecidable manual P 293 0.0953 131 -0.01 100
IV.ASSB.HHZ. 2019-02-21T04:05:00.94 0.1 undecidable manual P 215 0.1295 123 -0.09 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHN. ML:1 0.00012325 0.28 AML other m 2019-02-21T04:05:02.65
IV.ATCC.EHE. ML:1.3 0.0002545 0.1 AML other m 2019-02-21T04:05:02.79
IV.ASSB.HHE. ML:1 0.0001125 0.2 AML other m 2019-02-21T04:05:03.90
IV.FOSV.EHE. ML:1.3 0.000188 0.16 AML other m 2019-02-21T04:05:04.40
IV.FOSV.EHN. ML:1.2 0.0001595 0.34 AML other m 2019-02-21T04:05:04.39
IV.ASSB.HHN. ML:1 9.675E-5 0.68 AML other m 2019-02-21T04:05:04.95
IV.SNTG.HHE. ML:1.1 0.00011235 0.2 AML other m 2019-02-21T04:05:05.18
IV.SNTG.HHN. ML:1 8.07E-5 1.04 AML other m 2019-02-21T04:05:05.18
IV.CESI.HHE. ML:0.7 4.045E-5 0.28 AML other m 2019-02-21T04:05:05.74
IV.CESI.HHN. ML:0.6 2.975E-5 1.02 AML other m 2019-02-21T04:05:06.10
IV.MURB.HHE. ML:1.4 0.000161 1.72 AML other m 2019-02-21T04:05:07.02
IV.MURB.HHN. ML:1.2 0.000105 0.44 AML other m 2019-02-21T04:05:07.66
IV.SSFR.HHN. ML:1.3 9.67E-5 0.18 AML other m 2019-02-21T04:05:09.47
IV.SSFR.HHE. ML:1.3 9.365E-5 0.14 AML other m 2019-02-21T04:05:09.77
IV.EL6.EHN. ML:1.3 7.855E-5 0.46 AML other m 2019-02-21T04:05:10.20
IV.EL6.EHE. ML:1.3 8.935E-5 0.56 AML other m 2019-02-21T04:05:10.27
IV.NRCA.HHE. ML:0.9 2.5E-5 1.2 AML other m 2019-02-21T04:05:13.84
IV.NRCA.HHN. ML:1.1 3.255E-5 1.14 AML other m 2019-02-21T04:05:15.57
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