Earthquake with magnitude of ML 2.1 on date 29-03-2021 and time 16:24:15 (UTC) in region 3 km E Massa Martana (PG)

A magnitude ML 2.1 earthquake occured in region: 3 km E Massa Martana (PG), on

  • 29-03-2021 16:24:15 (UTC)
  • 29-03-2021 18:24:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.788, 12.556 at 8 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
Massa Martana PG 3 3770 3770
Giano dell'Umbria PG 6 3846 7616
Castel Ritaldi PG 10 3278 10894
Acquasparta TR 11 4778 15672
Todi PG 12 16851 32523
Gualdo Cattaneo PG 14 6155 38678
Montefalco PG 14 5679 44357
Collazzone PG 15 3473 47830
Spoleto PG 16 38218 86048
Montecastrilli TR 16 5022 91070
Bevagna PG 17 5081 96151
Fratta Todina PG 17 1839 97990
Monte Castello di Vibio PG 18 1567 99557
Avigliano Umbro TR 18 2558 102115
Campello sul Clitunno PG 18 2442 104557
Trevi PG 19 8469 113026
San Gemini TR 19 5018 118044

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SW of Foligno (57155 inhabitants)
26 Km N of Terni (111501 inhabitants)
38 Km SE of Perugia (166134 inhabitants)
55 Km NE of Viterbo (67173 inhabitants)
84 Km NW of L'Aquila (69753 inhabitants)
89 Km N of Guidonia Montecelio (88673 inhabitants)
93 Km SE of Arezzo (99543 inhabitants)
94 Km N of Tivoli (56533 inhabitants)
95 Km W of Teramo (54892 inhabitants)
99 Km NE of Civitavecchia (52991 inhabitants)
100 Km N of Roma (2864731 inhabitants)
Recent and historical seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
Bulletin
Rev1000
ML 2.1 2021-03-29
16:24:15
42.7882 12.5562 9 2021-07-12
16:55:15
Bollettino Sismico Italiano INGV 91319831
Reviewed
Rev100
ML 2.0 2021-03-29
16:24:16
42.79 12.5518 8 2021-03-29
16:34:35
Sala Sismica INGV-Roma 88591071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-29 16:24:15 ± 0.04
Latitude 42.7882 ± 0.0018
Longitude 12.5562 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91319831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 285
Semi-minor axis of confidence ellipse (meter) 199
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 241
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) 76
Number of associated phases, regardless of their use for origin computation 55
Number of defining phases 37
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) 0.65561
Number of stations at which the event was observed 43
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 91319831
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-15 09:35:48

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 27
Type of magnitude ML
Reference to an origin 88591071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-29 16:34:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GIZZ.HHZ. 2021-03-29T16:25:37.93 3.0 negative manual Pg 9.43 0
IV.ESCV.HHZ. 2021-03-29T16:25:36.60 3.0 negative manual Pn 2.33 0
IV.PTRJ.HNZ. 2021-03-29T16:25:30.12 3.0 undecidable manual Sn -9.99 0
IV.LAV9.HHZ. 2021-03-29T16:25:26.09 3.0 undecidable manual Sg 11.59 0
IV.TDS.HHZ. 2021-03-29T16:25:22.06 3.0 negative manual Pn -0.37 0
IV.MIDA.HHZ. 2021-03-29T16:25:19.15 3.0 undecidable manual Sn -9.99 0
IV.DGI.HHZ. 2021-03-29T16:25:13.90 3.0 undecidable manual Sn -9.99 0
IV.CERT.HHZ. 2021-03-29T16:25:13.63 3.0 undecidable manual Sg 0.94 0
OT.OT14.EHZ. 2021-03-29T16:25:06.65 3.0 negative manual Pg 7.07 0
IV.MGR.HHZ. 2021-03-29T16:25:06.83 3.0 undecidable manual Pn -5.12 0
IV.NRCA.HNZ. 2021-03-29T16:24:31.22 0.6 undecidable manual S 83 0.4119 50 0 48
IV.FEMA.HNZ. 2021-03-29T16:24:30.83 0.6 undecidable manual S 64 0.4011 50 -0.08 47
IV.LNSS.HHZ. 2021-03-29T16:24:30.88 0.3 undecidable manual S 117 0.4011 50 -0.02 72
IV.ZONE.HHZ. 2021-03-29T16:24:29.03 3.0 undecidable manual Sn -2.11 0
IV.MGAB.HHZ. 2021-03-29T16:24:29.53 0.3 undecidable manual S 291 0.348 50 0.19 70
IV.BARO.HNZ. 2021-03-29T16:24:28.71 0.1 undecidable manual P 215 0.6556 50 -0.24 87
IV.MTRA.HNZ. 2021-03-29T16:24:28.21 0.6 undecidable manual P 93 0.6169 50 -0.09 45
IV.CESI.HHZ. 2021-03-29T16:24:28.87 0.3 undecidable manual S 50 0.3345 50 -0.07 72
IV.SMA1.EHZ. 2021-03-29T16:24:28.30 0.1 undecidable manual P 105 0.5936 50 0.41 85
IV.CSP1.EHZ. 2021-03-29T16:24:27.50 0.1 undecidable manual P 57 0.563 50 0.13 91
IV.MMO1.HNZ. 2021-03-29T16:24:27.59 0.6 undecidable manual P 79 0.5756 50 0.01 46
IV.T1299.HNZ. 2021-03-29T16:24:27.38 0.6 undecidable manual P 106 0.5549 50 0.15 45
IV.ATMI.HHZ. 2021-03-29T16:24:27.54 0.6 undecidable manual P 339 0.5846 50 -0.2 45
IV.RM33.EHZ. 2021-03-29T16:24:27.18 0.6 undecidable manual P 120 0.5585 50 -0.11 46
IV.ATVA.EHZ. 2021-03-29T16:24:26.61 0.6 undecidable manual P 338 0.5288 50 -0.17 45
IV.ARRO.EHZ. 2021-03-29T16:24:26.32 0.3 undecidable manual S 144 0.259 106 -0.08 73
IV.MC2.EHZ. 2021-03-29T16:24:26.33 0.1 undecidable manual P 75 0.4802 50 0.38 88
IV.ATLO.EHZ. 2021-03-29T16:24:26.73 0.6 undecidable manual P 348 0.5378 50 -0.2 45
IV.GAVE.EHZ. 2021-03-29T16:24:26.48 0.3 undecidable manual S 111 0.2662 106 -0.16 72
IV.MURB.HHZ. 2021-03-29T16:24:26.00 0.1 undecidable manual P 357 0.4748 50 0.14 92
IV.ASSB.HHZ. 2021-03-29T16:24:26.54 0.3 undecidable manual S 16 0.2653 106 -0.07 73
IV.FDMO.HHZ. 2021-03-29T16:24:25.62 0.1 undecidable manual P 57 0.4614 50 -0.01 95
IV.MML1.EHZ. 2021-03-29T16:24:25.20 1.0 undecidable manual P 43 0.4452 50 -0.15 23
IV.LNSS.HHZ. 2021-03-29T16:24:24.48 0.1 undecidable manual P 117 0.4011 50 -0.11 94
IV.ATCC.EHZ. 2021-03-29T16:24:24.69 0.1 undecidable manual P 9 0.4011 50 0.09 95
IV.NRCA.HNZ. 2021-03-29T16:24:24.49 0.3 undecidable manual P 83 0.4119 50 -0.29 68
IV.FEMA.HNZ. 2021-03-29T16:24:24.36 0.6 undecidable manual P 64 0.4011 50 -0.24 46
IV.MGAB.HHZ. 2021-03-29T16:24:23.52 0.1 undecidable manual P 291 0.348 50 -0.17 94
IV.CESX.HHZ. 2021-03-29T16:24:23.46 0.3 undecidable manual S 173 0.1808 113 -0.08 74
IV.CESI.HHZ. 2021-03-29T16:24:23.46 0.1 undecidable manual P 50 0.3345 50 0 98
IV.GAVE.EHZ. 2021-03-29T16:24:22.01 0.1 undecidable manual P 111 0.2662 106 -0.12 97
IV.ASSB.HHZ. 2021-03-29T16:24:22.08 0.1 undecidable manual P 16 0.2653 106 -0.04 98
IV.ARRO.EHZ. 2021-03-29T16:24:22.24 0.1 undecidable manual P 144 0.259 106 0.25 94
IV.CESX.HHZ. 2021-03-29T16:24:20.43 0.1 undecidable manual P 173 0.1808 113 0.08 99
IV.MOMA.HNZ. 2021-03-29T16:24:18.88 0.3 undecidable manual S 33 0.0189 166 -0.12 76
IT.GNU.HGZ. 2021-03-29T16:24:18.89 0.3 undecidable manual S 33 0.0189 166 -0.11 76
IT.GNU.HGZ. 2021-03-29T16:24:17.91 0.1 undecidable manual P 33 0.0189 166 0.19 100
IV.MOMA.HNZ. 2021-03-29T16:24:17.92 0.1 undecidable manual P 33 0.0189 166 0.2 100
IV.ZONE.HHZ. 2021-03-29T16:24:12.04 3.0 negative manual Pn -0.14 0
IV.NDIM.HNZ. 2021-03-29T16:24:12.76 3.0 undecidable manual S -3.79 0
IV.ZEN8.EHZ. 2021-03-29T16:24:03.35 3.0 undecidable manual Pn -8.43 0
GU.GSCL.HHZ. 2021-03-29T16:24:00.93 3.0 undecidable manual S -4.46 0
IV.SARZ.HHZ. 2021-03-29T16:23:57.93 3.0 positive manual Pn -7.06 0
IV.CSNT.HHZ. 2021-03-29T16:23:55.14 3.0 undecidable manual Pn -9.99 0
GU.CANO.HHZ. 2021-03-29T16:23:55.48 3.0 undecidable manual Pn -9.99 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SARZ.HHN. ML:3.6 0.000309 1.34 AML other m 2021-03-29T16:24:10.10
IV.SARZ.HHE. ML:3.5 0.000207 0.68 AML other m 2021-03-29T16:24:10.58
IV.ASSB.HHN. ML:1.4 0.000125 0.18 AML other m 2021-03-29T16:24:26.83
IV.GAVE.EHE. ML:2.1 0.000689 0.58 AML other m 2021-03-29T16:24:28.43
IV.ASSB.HHE. ML:1.5 0.000162 0.26 AML other m 2021-03-29T16:24:28.55
IV.GAVE.EHN. ML:2 0.0004625 0.22 AML other m 2021-03-29T16:24:28.64
IV.ARRO.EHE. ML:1.8 0.0002945 0.18 AML other m 2021-03-29T16:24:28.83
IV.ARRO.EHN. ML:1.8 0.0003185 1.32 AML other m 2021-03-29T16:24:29.81
IV.CESI.HHE. ML:1.5 0.000121 0.44 AML other m 2021-03-29T16:24:29.15
IV.CESI.HHN. ML:1.7 0.000185 1.02 AML other m 2021-03-29T16:24:30.91
IV.MGAB.HHE. ML:2.1 0.000543 0.38 AML other m 2021-03-29T16:24:30.78
IV.MGAB.HNE. ML:2.2 0.000559 0.4 AML other m 2021-03-29T16:24:30.98
IV.MGAB.HHN. ML:2 0.000394 0.2 AML other m 2021-03-29T16:24:31.65
IV.MGAB.HNN. ML:2 0.000343 0.22 AML other m 2021-03-29T16:24:31.76
IV.LNSS.HHN. ML:2.1 0.0004125 0.3 AML other m 2021-03-29T16:24:32.08
IV.LNSS.HHE. ML:2.2 0.0004595 0.16 AML other m 2021-03-29T16:24:32.41
IV.LNSS.HNE. ML:2.2 0.000491 1.46 AML other m 2021-03-29T16:24:33.19
IV.ATCC.EHE. ML:1.5 0.00010295 0.4 AML other m 2021-03-29T16:24:33.58
IV.FDMO.HHN. ML:1.5 8.305E-5 0.3 AML other m 2021-03-29T16:24:34.42
IV.ATCC.EHN. ML:1.6 0.000133 0.28 AML other m 2021-03-29T16:24:34.81
IV.MURB.HHN. ML:2.2 0.000353 0.78 AML other m 2021-03-29T16:24:35.64
IV.MURB.HHE. ML:2.3 0.000486 1.76 AML other m 2021-03-29T16:24:35.10
IV.LNSS.HNN. ML:2.1 0.0003955 0.6 AML other m 2021-03-29T16:24:36.23
IV.CSP1.EHE. ML:2.2 0.0003195 0.42 AML other m 2021-03-29T16:24:36.78
IV.CSP1.EHN. ML:2 0.00021 0.46 AML other m 2021-03-29T16:24:37.52
IV.RM33.EHE. ML:1.9 0.0001655 0.3 AML other m 2021-03-29T16:24:37.85
IV.SMA1.EHE. ML:2.3 0.0003355 1.32 AML other m 2021-03-29T16:24:39.82
IV.SMA1.EHN. ML:2.1 0.00024 1.44 AML other m 2021-03-29T16:24:39.94
IV.FDMO.HHE. ML:1.5 8.62E-5 0.34 AML other m 2021-03-29T16:24:39.61
IV.ATMI.HHN. ML:2.2 0.0002735 0.48 AML other m 2021-03-29T16:24:39.45
IV.RM33.EHN. ML:1.8 0.000119 0.56 AML other m 2021-03-29T16:24:39.92
IV.ATMI.HHE. ML:2.2 0.000279 0.48 AML other m 2021-03-29T16:24:41.10
IV.CAFI.HHE. ML:0 5.54E-5 0.68 AML other m 2021-03-29T16:24:42.22
IV.CAFI.HHN. ML:0 4.465E-5 1.62 AML other m 2021-03-29T16:24:44.86
IV.PIEI.HHN. ML:0 3.18E-5 0.24 AML other m 2021-03-29T16:24:47.78
IV.PIEI.HHE. ML:0 4.985E-5 1.2 AML other m 2021-03-29T16:24:47.79
IV.PARC.HHN. ML:0 4.22E-5 1.18 AML other m 2021-03-29T16:24:48.34
IV.GAVE.HNE. ML:2.8 0.00288 0.42 AML other m 2021-03-29T16:24:49.07
IV.PARC.HHE. ML:0 4.75E-5 1.24 AML other m 2021-03-29T16:24:49.91
IV.GAVE.HNN. ML:2 0.0004485 1.44 AML other m 2021-03-29T16:25:18.08
IV.MIDA.HHN. ML:2.2 5.3E-5 1.46 AML other m 2021-03-29T16:25:52.06
IV.MIDA.HHE. ML:2 3.29E-5 0.66 AML other m 2021-03-29T16:25:56.15
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
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