Earthquake with magnitude of ML 1.6 on date 22-04-2021 and time 15:24:16 (UTC) in region 8 km E Cascia (PG)

A magnitude ML 1.6 earthquake occured in region: 8 km E Cascia (PG), on

  • 22-04-2021 15:24:16 (UTC)
  • 22-04-2021 17:24:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6940, 13.1040 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
Cascia PG 8 3217 3217
Cittareale RI 10 482 3699
Norcia PG 11 4957 8656
Accumoli RI 12 667 9323
Monteleone di Spoleto PG 13 599 9922
Poggiodomo PG 14 117 10039
Amatrice RI 17 2657 12696
Arquata del Tronto AP 18 1178 13874
Leonessa RI 19 2435 16309
Posta RI 19 694 17003

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Terni (111501 inhabitants)
44 Km SE of Foligno (57155 inhabitants)
45 Km NW of L'Aquila (69753 inhabitants)
49 Km W of Teramo (54892 inhabitants)
74 Km SE of Perugia (166134 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km NE of Tivoli (56533 inhabitants)
87 Km E of Viterbo (67173 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
94 Km W of Pescara (121014 inhabitants)
95 Km W of Chieti (51815 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 1.6 2021-04-22
15:24:16
42.6938 13.1038 11 2021-07-12
16:55:16
Bollettino Sismico Italiano INGV 91712471
Reviewed
Rev100
ML 1.5 2021-04-22
15:24:16
42.6955 13.1052 10 2021-04-22
15:32:20
Sala Sismica INGV-Roma 89363681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-22 15:24:16 ± 0.03
Latitude 42.6938 ± 0.0018
Longitude 13.1038 ± 0.0049
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91712471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 380
Semi-minor axis of confidence ellipse (meter) 250
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 277
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 38
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.10252
Epicentral distance of station farthest from the epicenter (degree) 0.63492
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 45
Type of magnitude ML
Reference to an origin 91712471
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-22 14:27:00

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 35
Type of magnitude ML
Reference to an origin 89363681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-22 15:32:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-04-22T15:24:31.64 0.6 undecidable manual S 11 44.9217 90 0.4 44
IV.TERO.HHZ. 2021-04-22T15:24:30.02 0.6 undecidable manual S 101 41.5251 90 -0.32 45
IV.FDMO.HHZ. 2021-04-22T15:24:29.41 0.6 undecidable manual S 358 38.0286 90 0.01 48
IV.CESI.HHZ. 2021-04-22T15:24:29.60 0.6 undecidable manual S 335 38.1285 90 0.17 47
IV.EL6.EHZ. 2021-04-22T15:24:29.10 0.3 undecidable manual P 360 70.4739 90 0.02 68
IV.MMO1.EHZ. 2021-04-22T15:24:27.07 0.6 undecidable manual S 38 29.1486 90 0.04 49
IV.ARRO.EHZ. 2021-04-22T15:24:27.21 0.6 undecidable manual S 245 30.3474 90 -0.15 48
IV.CAMP.HHE. 2021-04-22T15:24:27.14 0.6 undecidable manual S 125 30.4473 90 -0.24 47
IV.FEMA.HNZ. 2021-04-22T15:24:27.37 0.6 undecidable manual S 352 30.0477 90 0.09 49
IV.ASSB.HHZ. 2021-04-22T15:24:26.36 0.3 undecidable manual P 317 53.0025 90 -0.02 71
IV.MC2.EHZ. 2021-04-22T15:24:26.29 0.6 undecidable manual S 16 25.1526 90 0.34 47
IV.MTRA.EHZ. 2021-04-22T15:24:25.56 0.6 undecidable manual S 74 24.8529 90 -0.32 46
IV.MOMA.HHZ. 2021-04-22T15:24:25.24 0.3 undecidable manual P 286 45.1215 90 0.07 71
IV.CSP1.EHZ. 2021-04-22T15:24:25.11 0.1 undecidable manual P 11 44.9217 90 -0.02 95
IV.FIAM.HHZ. 2021-04-22T15:24:25.24 0.3 undecidable manual P 179 47.2194 90 -0.26 68
IV.RM33.EHZ. 2021-04-22T15:24:25.13 0.6 undecidable manual S 156 22.4553 90 -0.1 49
IV.TERO.HHZ. 2021-04-22T15:24:24.44 0.3 undecidable manual P 101 41.5251 90 -0.17 70
IV.SMA1.EHZ. 2021-04-22T15:24:24.72 0.6 undecidable manual S 110 20.1687 90 0.09 49
IV.FDMO.HHZ. 2021-04-22T15:24:24.02 0.1 undecidable manual P 358 38.0286 90 -0.05 96
IV.CESI.HHZ. 2021-04-22T15:24:24.13 0.3 undecidable manual P 335 38.1285 90 0.04 72
IV.GAVE.EHZ. 2021-04-22T15:24:23.71 0.6 undecidable manual S 269 17.0718 90 -0.1 50
IV.FEMA.HNZ. 2021-04-22T15:24:23.49 0.6 undecidable manual P 352 30.0477 90 0.64 42
IV.NRCA.HNZ. 2021-04-22T15:24:23.14 0.6 undecidable manual S 3 15.4734 90 -0.25 48
IV.T1299.HNZ. 2021-04-22T15:24:23.59 0.6 undecidable manual S 114 15.9729 90 0.07 50
IV.ARRO.EHZ. 2021-04-22T15:24:22.95 0.3 undecidable manual P 245 30.3474 90 0.05 73
IV.CAMP.HHE. 2021-04-22T15:24:22.73 0.1 undecidable manual P 125 30.4473 90 -0.18 95
IV.MC2.EHZ. 2021-04-22T15:24:22.09 0.1 undecidable manual P 16 25.1526 90 0.01 99
IV.LNSS.HHZ. 2021-04-22T15:24:22.31 0.6 undecidable manual S 207 11.3775 112 0.01 50
IV.MTRA.EHZ. 2021-04-22T15:24:22.08 0.3 undecidable manual P 74 24.8529 90 0.04 74
IV.MMO1.EHZ. 2021-04-22T15:24:22.70 0.1 undecidable manual P 38 29.1486 90 0 98
IV.RM33.EHZ. 2021-04-22T15:24:21.57 0.1 positive manual P 156 22.4553 90 -0.09 98
IV.SMA1.EHZ. 2021-04-22T15:24:21.41 0.1 undecidable manual P 110 20.1687 90 0.09 98
IV.NRCA.HNZ. 2021-04-22T15:24:20.55 0.1 undecidable manual P 3 15.4734 90 -0.05 100
IV.T1299.HNZ. 2021-04-22T15:24:20.83 0.1 undecidable manual P 114 15.9729 90 0.15 98
IV.GAVE.EHZ. 2021-04-22T15:24:20.87 0.1 undecidable manual P 269 17.0718 90 0.03 100
IV.LNSS.HHZ. 2021-04-22T15:24:20.12 0.1 undecidable manual P 207 11.3775 112 0.15 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HNN. ML:2.0 0.0010334972499999998 0.1536 AML other m 2021-04-22T15:24:22.55
IV.LNSS.HHN. ML:2.0 0.0012088625 0.1536 AML other m 2021-04-22T15:24:22.55
IV.LNSS.HHE. ML:2.1 0.0014613144999999998 0.1664 AML other m 2021-04-22T15:24:22.69
IV.LNSS.HNE. ML:2.1 0.001345 0.16 AML other m 2021-04-22T15:24:22.70
IV.NRCA.HHN. ML:1.8 0.0005539188 0.1024 AML other m 2021-04-22T15:24:23.37
IV.NRCA.HNN. ML:1.7 0.00046926769999999996 0.1024 AML other m 2021-04-22T15:24:23.37
IV.NRCA.HNE. ML:1.9 0.0006975 0.66 AML other m 2021-04-22T15:24:23.41
IV.NRCA.HHE. ML:1.9 0.000763 0.1 AML other m 2021-04-22T15:24:23.79
IV.GAVE.EHN. ML:1.8 0.00056435035 0.192 AML other m 2021-04-22T15:24:24.06
IV.GAVE.HNE. ML:1.9 0.00061740625 0.1408 AML other m 2021-04-22T15:24:24.47
IV.GAVE.EHE. ML:1.8 0.0005695 0.14 AML other m 2021-04-22T15:24:24.48
IV.GAVE.HNN. ML:1.4 0.00022153984999999997 0.256 AML other m 2021-04-22T15:24:25.20
IV.SMA1.EHN. ML:1.6 0.0003125 1.24 AML other m 2021-04-22T15:24:25.84
IV.SMA1.EHE. ML:1.6 0.00025333835 0.1792 AML other m 2021-04-22T15:24:25.34
IV.RM33.EHE. ML:1.4 0.000174 0.24 AML other m 2021-04-22T15:24:25.43
IV.RM33.HNN. ML:1.7 0.00029736325 0.1408 AML other m 2021-04-22T15:24:25.52
IV.RM33.EHN. ML:1.7 0.00029815740000000004 0.1408 AML other m 2021-04-22T15:24:25.59
IV.MTRA.EHN. ML:1.4 0.000134 1.78 AML other m 2021-04-22T15:24:25.89
IV.RM33.HNE. ML:1.4 0.000180694325 0.1408 AML other m 2021-04-22T15:24:26.87
IV.MTRA.EHE. ML:1.4 0.000140585165 0.2816 AML other m 2021-04-22T15:24:26.84
IV.MTRA.HNE. ML:1.4 0.00012979014999999999 0.2432 AML other m 2021-04-22T15:24:26.84
IV.TERO.HNE. ML:1.5 0.00009861247349999999 1.3728 AML other m 2021-04-22T15:24:26.24
IV.MOMA.HNE. ML:1.5 0.00008386017 1.2704 AML other m 2021-04-22T15:24:27.73
IV.FIAM.HNN. ML:1.8 0.0001545431 0.9984 AML other m 2021-04-22T15:24:30.21
IV.FIAM.HNE. ML:3.0 0.0031791040000000003 0.2144 AML other m 2021-04-22T15:24:30.28
IV.FDMO.HHN. ML:1.5 0.0001123309 0.2432 AML other m 2021-04-22T15:24:30.42
IV.CESI.HNN. ML:1.8 0.00023267699999999998 0.2304 AML other m 2021-04-22T15:24:30.42
IV.CESI.HHN. ML:1.8 0.00021949999999999997 0.22 AML other m 2021-04-22T15:24:30.31
IV.CESI.HHE. ML:1.3 0.00007359713000000002 0.2048 AML other m 2021-04-22T15:24:30.33
IV.TERO.HHN. ML:1.3 0.00006291798 0.064 AML other m 2021-04-22T15:24:30.59
IV.FDMO.HHE. ML:1.5 0.00010262573499999999 0.128 AML other m 2021-04-22T15:24:30.66
IV.TERO.HHE. ML:1.2 0.00005545037 1.808 AML other m 2021-04-22T15:24:30.03
IV.MOMA.HHE. ML:1.3 0.000057010985 0.1664 AML other m 2021-04-22T15:24:32.34
IV.CSP1.EHE. ML:1.9 0.000245 0.28 AML other m 2021-04-22T15:24:32.79
IV.CSP1.EHN. ML:1.9 0.0002255 1.66 AML other m 2021-04-22T15:24:33.03
IV.MOMA.HHN. ML:1.3 0.00005509866 0.2688 AML other m 2021-04-22T15:24:33.46
IV.FIAM.HHE. ML:1.1 0.000034450000000000004 0.72 AML other m 2021-04-22T15:24:33.48
IV.FIAM.HHN. ML:1.0 0.00002732078 0.2048 AML other m 2021-04-22T15:24:33.59
IV.MTRA.HNN. ML:1.4 0.0001302463 0.448 AML other m 2021-04-22T15:24:33.28
IV.ASSB.HHN. ML:1.6 0.00008829999999999999 0.54 AML other m 2021-04-22T15:24:35.66
IV.ASSB.HHE. ML:1.4 0.000058223405 1.8976 AML other m 2021-04-22T15:24:36.00
IV.TERO.HNN. ML:1.6 0.000117807895 0.8192 AML other m 2021-04-22T15:24:39.60
IV.EL6.EHN. ML:1.5 0.0000479805 1.7696 AML other m 2021-04-22T15:24:40.92
IV.EL6.EHE. ML:1.5 0.000055840838999999996 0.2432 AML other m 2021-04-22T15:24:42.19
IV.MOMA.HNN. ML:1.7 0.00013412962 0.768 AML other m 2021-04-22T15:24:43.15
TDMT - Time Domain Moment Tensor
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