Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 09-08-2022 and time 00:42:31 (UTC) in region 1 km S Cascia (PG)

A magnitude ML 1.4 earthquake occured in region: 1 km S Cascia (PG), on

  • 09-08-2022 00:42:31 (UTC)
  • 09-08-2022 02:42:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7090, 13.0100 at 9 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 1 3217 3217
Poggiodomo PG 6 117 3334
Monteleone di Spoleto PG 8 599 3933
Norcia PG 12 4957 8890
Vallo di Nera PG 14 364 9254
Sant'Anatolia di Narco PG 14 564 9818
Cerreto di Spoleto PG 15 1075 10893
Scheggino PG 15 461 11354
Cittareale RI 16 482 11836
Leonessa RI 17 2435 14271
Preci PG 19 724 14995
Polino TR 19 233 15228
Accumoli RI 20 667 15895

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Terni (111501 inhabitants)
37 Km SE of Foligno (57155 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
57 Km W of Teramo (54892 inhabitants)
67 Km SE of Perugia (166134 inhabitants)
81 Km E of Viterbo (67173 inhabitants)
82 Km N of Guidonia Montecelio (88673 inhabitants)
85 Km N of Tivoli (56533 inhabitants)
96 Km W of Montesilvano (53738 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 1.4 2022-08-09
00:42:31		 42.709 13.01 9 2023-01-31
19:03:44		 Bollettino Sismico Italiano INGV 109694851
Reviewed
Rev100 		ML 1.4 2022-08-09
00:42:31		 42.7025 13.0263 10 2022-08-09
00:47:46		 Sala Sismica INGV-Roma 108311821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-08-09 00:42:31 ± 0.14
Latitude 42.7090 ± 0.0045
Longitude 13.0100 ± 0.0110
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 109694851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 942
Semi-minor axis of confidence ellipse (meter) 442
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 85
Circular confidence region, given by single value of horizontal uncertainty (meter) 940.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 202
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
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) 0.14569
Epicentral distance of station farthest from the epicenter (degree) 0.43167
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 2
Type of magnitude ML
Reference to an origin 109694851
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-01-11 15:26:39

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 2
Type of magnitude ML
Reference to an origin 108311821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-08-09 00:47:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHN. 2022-08-09T00:42:47.95 0.6 undecidable manual S 50 47.9187 50 0.82 38
IV.MML1.HNE. 2022-08-09T00:42:46.46 0.6 undecidable manual S 356 45.0216 50 0.11 47
IV.CSP1.EHZ. 2022-08-09T00:42:46.42 0.6 undecidable manual S 20 45.3213 50 -0.02 48
IV.CESI.HHZ. 2022-08-09T00:42:43.08 0.6 undecidable manual S 345 33.9438 50 -0.32 46
IV.FDMO.HHZ. 2022-08-09T00:42:43.83 0.6 undecidable manual S 10 36.8298 50 -0.36 45
IV.MMO1.EHZ. 2022-08-09T00:42:42.83 0.6 undecidable manual S 51 33.3444 50 -0.41 45
IV.MC2.EHZ. 2022-08-09T00:42:41.19 0.6 undecidable manual S 33 26.751 109 -0.08 49
IV.RM33.EHZ. 2022-08-09T00:42:41.44 0.6 undecidable manual S 143 27.75 108 -0.16 48
IV.MF5.EHN. 2022-08-09T00:42:40.77 0.3 undecidable manual P 50 47.9187 50 0.26 68
IV.MML1.HNE. 2022-08-09T00:42:40.23 0.3 undecidable manual P 356 45.0216 50 0.17 70
IV.CSP1.EHZ. 2022-08-09T00:42:40.10 0.3 undecidable manual P 20 45.3213 50 -0.01 72
IV.CESI.HHZ. 2022-08-09T00:42:38.55 0.3 undecidable manual P 345 33.9438 50 0.2 71
IV.MMO1.EHZ. 2022-08-09T00:42:38.06 0.3 undecidable manual P 51 33.3444 50 -0.2 71
IV.FDMO.HHZ. 2022-08-09T00:42:38.66 0.3 undecidable manual P 10 36.8298 50 -0.15 71
IV.RM33.EHZ. 2022-08-09T00:42:37.28 0.3 undecidable manual P 143 27.75 108 -0.03 74
IV.NRCA.HHZ. 2022-08-09T00:42:37.86 0.1 undecidable manual S 32 16.1727 119 -0.05 100
IV.MC2.EHZ. 2022-08-09T00:42:37.10 0.1 undecidable manual P 33 26.751 109 -0.02 99
IV.NRCA.HHZ. 2022-08-09T00:42:35.36 0.1 positive manual P 32 16.1727 119 0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.1 0.0001245 0.72 AML other m 2022-08-09T00:42:37.96
IV.NRCA.HHE. ML:1.6 0.0003615 1.84 AML other m 2022-08-09T00:42:38.05
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