Earthquake with magnitude of ML 2.1 on date 04-08-2020 and time 11:04:42 (UTC) in region 2 km SW Ussita (MC)

A magnitude ML 2.1 earthquake occured in region: 2 km SW Ussita (MC), on

  • 04-08-2020 11:04:42 (UTC)
  • 04-08-2020 13:04:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.93, 13.12 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ussita MC 2 444 444
Visso MC 3 1107 1551
Castelsantangelo sul Nera MC 5 281 1832
Preci PG 9 724 2556
Bolognola MC 11 142 2698
Acquacanina MC 12 121 2819
Monte Cavallo MC 12 145 2964
Fiordimonte MC 12 202 3166
Fiastra MC 12 559 3725
Pieve Torina MC 14 1458 5183
Pievebovigliana MC 15 866 6049
Norcia PG 16 4957 11006
Sellano PG 17 1079 12085
Montemonaco AP 17 604 12689
Muccia MC 18 915 13604
Montefortino FM 18 1178 14782
Sarnano MC 19 3264 18046
Amandola FM 20 3629 21675

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
57 Km NW of Teramo (54892 inhabitants)
57 Km NE of Terni (111501 inhabitants)
63 Km E of Perugia (166134 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
96 Km W of Montesilvano (53738 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 2020-08-04
11:04:42
42.93 13.12 11 2020-11-19
12:36:56
Bollettino Sismico Italiano INGV 81728131
Reviewed
Rev100
ML 2.2 2020-08-04
11:04:42
42.93 13.13 10 2020-08-04
11:12:18
Sala Sismica INGV-Roma 81635031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-04 11:04:42 ± 0.04
Latitude 42.93 ± 0.00
Longitude 13.12 ± 0.00
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 81728131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 310
Semi-minor axis of confidence ellipse (meter) 276
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 53
Circular confidence region, given by single value of horizontal uncertainty (meter) 310
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 36
Number of associated phases, regardless of their use for origin computation 53
Number of defining phases 51
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.73744
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 81635031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-04 11:12:18

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 70
Type of magnitude ML
Reference to an origin 81728131
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-07 08:07:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CESX.HHZ. 2020-08-04T11:04:59.85 0.3 undecidable manual S 230 0.5099 50 -0.14 68
IV.ATCC.EHZ. 2020-08-04T11:04:58.27 0.3 undecidable manual S 306 0.4317 50 0.59 61
IV.MOMA.HHZ. 2020-08-04T11:04:58.01 0.3 undecidable manual S 252 0.4245 50 0.56 62
IV.TRE1.HNZ. 2020-08-04T11:04:58.99 3.0 undecidable manual S 1.31 0
IV.PIEI.HHZ. 2020-08-04T11:04:56.38 0.3 undecidable manual P 325 0.7374 50 -0.06 66
IV.MNTT.EHZ. 2020-08-04T11:04:56.65 0.3 undecidable manual S 70 0.3696 50 0.81 57
IV.TRTR.HHZ. 2020-08-04T11:04:55.19 3.0 positive manual P 0.74 0
IV.SMA1.EHZ. 2020-08-04T11:04:55.02 0.3 undecidable manual S 153 0.3417 50 0 72
IV.FIAM.HHZ. 2020-08-04T11:04:55.42 0.3 undecidable manual P 180 0.6655 50 0.21 64
IV.ASSB.HHZ. 2020-08-04T11:04:55.52 0.6 undecidable manual S 288 0.3552 50 0.11 47
IV.LNSS.HHZ. 2020-08-04T11:04:54.86 0.3 undecidable manual S 190 0.3363 50 0 72
IV.ARVD.HHZ. 2020-08-04T11:04:53.85 0.6 undecidable manual P 347 0.5783 50 0.13 44
IV.SAP2.EHZ. 2020-08-04T11:04:53.08 0.3 undecidable manual S 51 0.2599 50 0.48 66
IV.MTRA.EHZ. 2020-08-04T11:04:52.47 0.3 undecidable manual S 131 0.2689 50 -0.38 67
IV.MF5.EHZ. 2020-08-04T11:04:52.88 0.3 undecidable manual S 78 0.2536 50 0.48 66
IV.CESX.HHZ. 2020-08-04T11:04:52.29 0.3 undecidable manual P 230 0.5099 50 -0.25 66
IV.TERO.HHZ. 2020-08-04T11:04:51.57 0.3 undecidable manual P 131 0.4712 50 -0.32 66
IV.GUMA.HHZ. 2020-08-04T11:04:51.04 0.6 undecidable manual S 51 0.2023 50 0.15 48
IV.MOMA.HHZ. 2020-08-04T11:04:51.07 0.1 undecidable manual P 252 0.4245 50 -0.01 94
IV.RM33.EHZ. 2020-08-04T11:04:51.21 0.3 undecidable manual P 171 0.4308 50 0.02 70
IV.ATCC.EHZ. 2020-08-04T11:04:51.19 0.1 undecidable manual P 306 0.4317 50 -0.02 94
IV.CAMP.HHZ. 2020-08-04T11:04:51.08 0.3 undecidable manual P 152 0.4506 50 -0.46 64
IV.FOSV.EHZ. 2020-08-04T11:04:51.20 0.3 undecidable manual P 324 0.4461 50 -0.25 67
IV.ARRO.EHZ. 2020-08-04T11:04:51.24 0.3 undecidable manual P 216 0.4407 50 -0.12 69
IV.MNTT.EHZ. 2020-08-04T11:04:50.69 0.1 positive manual P 70 0.3696 50 0.55 84
IV.EL6.EHZ. 2020-08-04T11:04:50.55 0.1 undecidable manual P 358 0.3948 50 -0.03 94
IV.PF6.EHN. 2020-08-04T11:04:50.47 0.1 undecidable manual S 15 0.2104 50 -0.66 83
IV.MML1.HNE. 2020-08-04T11:04:50.93 0.1 undecidable manual S 329 0.2095 50 -0.18 95
IV.CESI.HNZ. 2020-08-04T11:04:50.01 0.3 undecidable manual S 294 0.1736 119 -0.01 74
IV.ASSB.HHZ. 2020-08-04T11:04:49.79 0.1 positive manual P 288 0.3552 50 -0.11 94
IV.SMA1.EHZ. 2020-08-04T11:04:49.51 0.1 undecidable manual P 153 0.3417 50 -0.16 93
IV.T1299.HNN. 2020-08-04T11:04:49.33 0.3 undecidable manual P 158 0.322 50 -0.01 72
IV.CSP1.EHZ. 2020-08-04T11:04:49.52 0.3 undecidable manual S 21 0.1691 120 -0.36 69
IV.LNSS.HHZ. 2020-08-04T11:04:49.55 0.1 negative manual P 190 0.3363 50 -0.03 95
IV.MF5.EHZ. 2020-08-04T11:04:48.28 0.1 positive manual P 78 0.2536 50 0.12 95
IV.SAP2.EHZ. 2020-08-04T11:04:48.42 0.1 positive manual P 51 0.2599 50 0.15 95
IV.MMO1.EHZ. 2020-08-04T11:04:48.93 0.3 undecidable manual S 103 0.1547 122 -0.47 68
IV.SEF1.HNN. 2020-08-04T11:04:48.00 0.3 undecidable manual P 329 0.2473 50 -0.06 72
IV.MTRA.EHZ. 2020-08-04T11:04:48.17 0.1 undecidable manual P 131 0.2689 50 -0.25 92
IV.PF6.EHN. 2020-08-04T11:04:47.10 0.1 positive manual P 15 0.2104 50 -0.32 92
IV.NRCA.HNZ. 2020-08-04T11:04:47.65 0.3 undecidable manual S 183 0.1007 134 -0.11 74
IV.MML1.HNE. 2020-08-04T11:04:47.31 0.1 positive manual P 329 0.2095 50 -0.1 96
IV.GUMA.HHZ. 2020-08-04T11:04:47.32 0.1 positive manual P 51 0.2023 50 0.03 98
IV.FEMA.HNZ. 2020-08-04T11:04:47.02 0.3 undecidable manual S 298 0.0594 149 0.27 72
IV.FDMO.HHZ. 2020-08-04T11:04:47.62 0.3 undecidable manual S 346 0.1052 133 -0.26 71
IV.MC2.EHZ. 2020-08-04T11:04:46.96 0.1 undecidable manual S 115 0.0549 151 0.3 95
IV.CSP1.EHZ. 2020-08-04T11:04:46.55 0.1 positive manual P 21 0.1691 120 -0.15 96
IV.CESI.HNZ. 2020-08-04T11:04:46.84 0.1 positive manual P 294 0.1736 119 0.05 98
IV.MMO1.EHZ. 2020-08-04T11:04:46.27 0.1 positive manual P 103 0.1547 122 -0.16 96
IV.FEMA.HNZ. 2020-08-04T11:04:45.21 0.1 undecidable manual P 298 0.0594 149 0.31 95
IV.FDMO.HHZ. 2020-08-04T11:04:45.57 0.1 negative manual P 346 0.1052 133 0.02 100
IV.MC2.EHZ. 2020-08-04T11:04:45.10 0.1 negative manual P 115 0.0549 151 0.26 96
IV.NRCA.HNZ. 2020-08-04T11:04:45.61 0.1 negative manual P 183 0.1007 134 0.13 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FIAM.HHN. ML:0 4.75E-5 1.02 AML other m 2020-08-04T11:05:12.30
IV.MNTT.EHE. ML:0 0.0008391151 0.2816 AML other m 2020-08-04T11:04:59.96
IV.MOMA.HHN. ML:0 0.0002249843 0.2048 AML other m 2020-08-04T11:05:01.00
IV.MOMA.HHE. ML:0 0.0003061356 0.1408 AML other m 2020-08-04T11:05:01.22
IV.FEMA.HNE. ML:2.5 0.005345209 0.2688 AML other m 2020-08-04T11:04:48.50
IV.FEMA.HNN. ML:2.5 0.00423717 0.1216 AML other m 2020-08-04T11:04:47.22
IV.FDMO.HHE. ML:2.4 0.002533068 0.1984 AML other m 2020-08-04T11:04:47.90
IV.FDMO.HHN. ML:2 0.0012760645 0.16 AML other m 2020-08-04T11:04:49.77
IV.NRCA.HHN. ML:2.8 0.007286066 0.1216 AML other m 2020-08-04T11:04:47.80
IV.NRCA.HNE. ML:2.7 0.0056696875 0.1536 AML other m 2020-08-04T11:04:47.91
IV.NRCA.HHE. ML:2.7 0.006275663 0.16 AML other m 2020-08-04T11:04:47.91
IV.NRCA.HNN. ML:2.8 0.0068327475 0.1216 AML other m 2020-08-04T11:04:47.80
IV.CSP1.EHE. ML:2.3 0.0016216695 0.1792 AML other m 2020-08-04T11:04:49.81
IV.CSP1.EHN. ML:2.1 0.00102591485 0.16 AML other m 2020-08-04T11:04:49.71
IV.CESI.HHN. ML:2.7 0.0040132105 0.2624 AML other m 2020-08-04T11:04:50.39
IV.CESI.HNE. ML:2.4 0.0020613115 0.1088 AML other m 2020-08-04T11:04:50.21
IV.CESI.HNN. ML:2.7 0.0038691735 0.2496 AML other m 2020-08-04T11:04:50.39
IV.CESI.HHE. ML:2.4 0.002118282 0.1024 AML other m 2020-08-04T11:04:50.21
IV.GUMA.HHE. ML:2.6 0.0027990135 0.2176 AML other m 2020-08-04T11:04:51.15
IV.GUMA.HNN. ML:2.6 0.0025939076 0.2624 AML other m 2020-08-04T11:04:51.14
IV.GUMA.HHN. ML:2.4 0.001632722 0.2368 AML other m 2020-08-04T11:04:53.20
IV.GUMA.HNE. ML:2.4 0.0017196075 0.3072 AML other m 2020-08-04T11:04:54.05
IV.MTRA.HNE. ML:2.3 0.0010367399 0.2048 AML other m 2020-08-04T11:04:53.03
IV.MTRA.EHN. ML:2.5 0.0016219985 0.3008 AML other m 2020-08-04T11:04:53.46
IV.MTRA.EHE. ML:2.3 0.0010541365 0.2048 AML other m 2020-08-04T11:04:53.03
IV.MTRA.HNN. ML:2.5 0.001563993 0.3008 AML other m 2020-08-04T11:04:53.46
IV.MF5.EHE. ML:2.2 0.00091870285 0.1984 AML other m 2020-08-04T11:04:53.59
IV.MF5.EHN. ML:2.1 0.0007447177 0.16 AML other m 2020-08-04T11:04:53.52
IV.SAP2.EHE. ML:2.3 0.0009220691 0.1856 AML other m 2020-08-04T11:04:53.79
IV.SAP2.EHN. ML:3 0.0053335445 0.1984 AML other m 2020-08-04T11:04:54.17
IV.SMA1.EHN. ML:1.9 0.0003060175 0.3008 AML other m 2020-08-04T11:05:02.73
IV.SMA1.EHE. ML:2 0.00033234265 0.3648 AML other m 2020-08-04T11:05:02.80
IV.LNSS.HHE. ML:2.1 0.00053084835 0.1152 AML other m 2020-08-04T11:04:55.94
IV.LNSS.HNE. ML:2.1 0.0004803441 0.128 AML other m 2020-08-04T11:04:55.94
IV.LNSS.HHN. ML:2.1 0.00044317485 0.1408 AML other m 2020-08-04T11:04:56.24
IV.LNSS.HNN. ML:2 0.0004182402 0.3392 AML other m 2020-08-04T11:04:57.16
IV.ASSB.HHE. ML:2 0.000382322 0.16 AML other m 2020-08-04T11:04:56.07
IV.ASSB.HHN. ML:2.1 0.0004292493 0.16 AML other m 2020-08-04T11:04:57.63
IV.EL6.EHE. ML:2.1 0.0003506555 0.1984 AML other m 2020-08-04T11:05:02.16
IV.EL6.EHN. ML:2 0.00034682915 0.3776 AML other m 2020-08-04T11:05:03.09
IV.MNTT.EHN. ML:2.5 0.001136258 0.3648 AML other m 2020-08-04T11:04:58.86
IV.MOMA.HNN. ML:2.1 0.00033259685 0.48 AML other m 2020-08-04T11:05:02.47
IV.MOMA.HNE. ML:2 0.000300435 0.1472 AML other m 2020-08-04T11:05:01.30
IV.CAMP.HHN. ML:1.5 9.0335485E-5 0.2176 AML other m 2020-08-04T11:04:59.10
IV.CAMP.HHE. ML:1.5 8.8794405E-5 0.2624 AML other m 2020-08-04T11:04:59.61
IV.ATCC.EHE. ML:1.9 0.00021595865 0.1344 AML other m 2020-08-04T11:04:58.92
IV.ATCC.EHN. ML:2 0.00026821085 0.1792 AML other m 2020-08-04T11:05:01.35
IV.FOSV.EHE. ML:1.7 0.000137744905 0.16 AML other m 2020-08-04T11:04:58.87
IV.FOSV.EHN. ML:2 0.00023388355 0.4032 AML other m 2020-08-04T11:04:59.11
IV.RM33.HNN. ML:1.7 0.00013365989 0.3584 AML other m 2020-08-04T11:05:07.06
IV.RM33.EHE. ML:1.7 0.0001456833 0.1152 AML other m 2020-08-04T11:04:59.94
IV.RM33.EHN. ML:1.7 0.00013485435 0.1344 AML other m 2020-08-04T11:05:00.64
IV.RM33.HNE. ML:1.8 0.000152972525 0.2432 AML other m 2020-08-04T11:05:02.13
IV.ARRO.EHE. ML:1.9 0.0002060128 0.16 AML other m 2020-08-04T11:04:59.32
IV.ARRO.EHN. ML:1.9 0.00021634995 0.1984 AML other m 2020-08-04T11:05:00.86
IV.TERO.HHN. ML:2 0.00026462595 0.16 AML other m 2020-08-04T11:05:00.18
IV.TERO.HNN. ML:2 0.00023413755 0.0896 AML other m 2020-08-04T11:05:00.18
IV.TERO.HHE. ML:1.9 0.0001876266 0.1408 AML other m 2020-08-04T11:05:00.21
IV.TERO.HNE. ML:1.9 0.0002167124 0.1792 AML other m 2020-08-04T11:05:00.16
IV.CESX.HHE. ML:2 0.00022216625 0.4032 AML other m 2020-08-04T11:05:01.35
IV.CESX.HHN. ML:2 0.00024389145 0.2176 AML other m 2020-08-04T11:05:01.88
IV.ARVD.HHN. ML:1.4 4.789151E-5 0.096 AML other m 2020-08-04T11:05:05.03
IV.ARVD.HHE. ML:1.5 5.712012E-5 0.1216 AML other m 2020-08-04T11:05:06.38
IV.TRTR.HHE. ML:2.6 0.0006931984 0.5568 AML other m 2020-08-04T11:05:03.84
IV.TRTR.HHN. ML:2.7 0.0008782437 0.6784 AML other m 2020-08-04T11:05:13.65
IV.FIAM.HNE. ML:3.2 0.002722969 1.9904 AML other m 2020-08-04T11:05:15.42
IV.FIAM.HNN. ML:2 0.00016291465 1.0368 AML other m 2020-08-04T11:05:05.74
IV.FIAM.HHE. ML:1.3 3.138217E-5 0.4992 AML other m 2020-08-04T11:05:18.57
IV.PIEI.HHN. ML:1.7 6.302342E-5 0.3776 AML other m 2020-08-04T11:05:08.65
IV.PIEI.HHE. ML:1.8 8.386749E-5 0.1984 AML other m 2020-08-04T11:05:08.69
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