Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 22-04-2023 and time 00:00:35 (UTC) in region 3 km N Cannara (PG)

A magnitude ML 0.9 earthquake occured in region: 3 km N Cannara (PG), on

  • 22-04-2023 00:00:35 (UTC)
  • 22-04-2023 02:00:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0240, 12.5890 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Cannara PG 3 4305 4305
Bastia Umbra PG 6 21874 26179
Assisi PG 6 28299 54478
Spello PG 8 8645 63123
Bettona PG 9 4367 67490
Bevagna PG 10 5081 72571
Foligno PG 12 57155 129726
Torgiano PG 13 6725 136451
Gualdo Cattaneo PG 13 6155 142606
Valtopina PG 14 1398 144004
Deruta PG 14 9669 153673
Valfabbrica PG 15 3389 157062
Montefalco PG 15 5679 162741
Perugia PG 19 166134 328875
Collazzone PG 19 3473 332348
Nocera Umbra PG 19 5839 338187

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km NW of Foligno (57155 inhabitants)
19 Km SE of Perugia (166134 inhabitants)
52 Km N of Terni (111501 inhabitants)
76 Km SE of Arezzo (99543 inhabitants)
78 Km NE of Viterbo (67173 inhabitants)
98 Km SW of Fano (60888 inhabitants)
100 Km W of Teramo (54892 inhabitants)
100 Km NW of L'Aquila (69753 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 0.9 2023-04-22
00:00:35		 43.0238 12.5892 9 2024-03-01
17:18:05		 Bollettino Sismico Italiano INGV 116771221
Reviewed
Rev100 		ML 0.9 2023-04-22
00:00:35		 43.0282 12.6007 9 2023-04-22
00:17:13		 Sala Sismica INGV-Roma 116589261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-22 00:00:35 ± 0.07
Latitude 43.0238 ± 0.0036
Longitude 12.5892 ± 0.0049
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 116771221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 438
Semi-minor axis of confidence ellipse (meter) 394
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 107
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.51351
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 116771221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-26 13:54:43

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 116589261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-22 00:17:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2023-04-22T00:00:53.74 0.3 undecidable manual S 356 56.9985 50 0.59 60
IV.EL6.EHZ. 2023-04-22T00:00:52.76 0.6 undecidable manual S 51 53.502 50 0.51 42
IV.FDMO.HHZ. 2023-04-22T00:00:48.83 0.3 undecidable manual S 88 40.4262 50 0.09 70
IV.MGAB.HHZ. 2023-04-22T00:00:48.33 0.3 undecidable manual S 252 40.626 50 -0.47 65
IV.SNTG.HHZ. 2023-04-22T00:00:47.90 0.3 undecidable manual S 48 38.3283 50 -0.27 68
IV.MML1.EHZ. 2023-04-22T00:00:46.53 0.3 undecidable manual S 72 32.5452 50 -0.11 71
IV.EL6.EHZ. 2023-04-22T00:00:45.06 0.3 undecidable manual P 51 53.502 50 0.08 69
IV.PIEI.HHZ. 2023-04-22T00:00:45.67 0.3 undecidable manual P 356 56.9985 50 0.16 67
IV.MURB.HHZ. 2023-04-22T00:00:45.02 0.3 undecidable manual S 349 27.0507 109 0.05 72
IV.MOMA.HHZ. 2023-04-22T00:00:44.76 0.3 undecidable manual S 184 24.4533 110 0.64 62
IV.CESI.HHZ. 2023-04-22T00:00:44.52 0.3 undecidable manual S 95 25.6521 110 0.01 73
IV.FDMO.HHZ. 2023-04-22T00:00:42.83 0.3 undecidable manual P 88 40.4262 50 -0.13 70
IV.ATCC.EHZ. 2023-04-22T00:00:42.22 0.3 undecidable manual S 13 18.3705 116 0.04 74
IV.MGAB.HHZ. 2023-04-22T00:00:42.81 0.3 undecidable manual P 252 40.626 50 -0.18 69
IV.SNTG.HHZ. 2023-04-22T00:00:42.51 0.3 undecidable manual P 48 38.3283 50 -0.12 70
IV.MML1.EHZ. 2023-04-22T00:00:41.57 0.3 undecidable manual P 72 32.5452 50 -0.18 70
IV.CESI.HHZ. 2023-04-22T00:00:40.49 0.3 undecidable manual P 95 25.6521 110 -0.03 73
IV.MURB.HHZ. 2023-04-22T00:00:40.72 0.3 undecidable manual P 349 27.0507 109 -0.06 72
IV.MOMA.HHZ. 2023-04-22T00:00:40.29 0.3 undecidable manual P 184 24.4533 110 0 73
IV.ATCC.EHZ. 2023-04-22T00:00:39.20 0.1 undecidable manual P 13 18.3705 116 0.03 98
IV.ASSB.HHZ. 2023-04-22T00:00:38.54 0.1 undecidable manual S 70 5.994 147 -0.31 95
IV.ASSB.HHZ. 2023-04-22T00:00:37.30 0.1 undecidable manual P 70 5.994 147 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:1.1 0.00020150000000000002 0.2 AML other m 2023-04-22T00:00:38.66
IV.ASSB.HHE. ML:0.9 0.00014500000000000003 0.7 AML other m 2023-04-22T00:00:39.57
IV.ATCC.EHE. ML:1.2 0.00012425 0.32 AML other m 2023-04-22T00:00:42.37
IV.ATCC.EHN. ML:1.0 0.00009125 0.86 AML other m 2023-04-22T00:00:42.81
IV.ATCC.HNE. ML:1.3 0.0001785 0.86 AML other m 2023-04-22T00:00:44.27
IV.ATCC.HNN. ML:1.2 0.00011665 0.56 AML other m 2023-04-22T00:00:44.86
IV.MURB.HHE. ML:1.4 0.000126 0.44 AML other m 2023-04-22T00:00:45.23
IV.CESI.HHE. ML:0.8 0.0000353 0.28 AML other m 2023-04-22T00:00:45.24
IV.MURB.HHN. ML:1.2 0.0000962 0.24 AML other m 2023-04-22T00:00:45.72
IV.CESI.HHN. ML:0.6 0.000026450000000000003 1.02 AML other m 2023-04-22T00:00:45.36
IV.MML1.EHN. ML:0.8 0.00002665 1.76 AML other m 2023-04-22T00:00:46.05
IV.MML1.EHE. ML:0.8 0.00002985 1.32 AML other m 2023-04-22T00:00:47.81
IV.SNTG.HHE. ML:0.8 0.000026450000000000003 0.16 AML other m 2023-04-22T00:00:48.58
IV.SNTG.HHN. ML:0.7 0.000019849999999999998 0.68 AML other m 2023-04-22T00:00:48.72
IV.FDMO.HHN. ML:0.6 0.00001575 1.02 AML other m 2023-04-22T00:00:49.38
IV.PIEI.HHN. ML:0.7 0.000008515 0.42 AML other m 2023-04-22T00:00:49.41
IV.FDMO.HHE. ML:0.6 0.0000141 0.78 AML other m 2023-04-22T00:00:50.00
IV.PIEI.HHE. ML:0.7 0.000010415000000000001 1.34 AML other m 2023-04-22T00:00:56.81
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