Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 08-08-2021 and time 23:27:41 (UTC) in region Costa Marchigiana Pesarese (Pesaro Urbino)

A magnitude ML 1.4 earthquake occured in region: Costa Marchigiana Pesarese (Pesaro Urbino), on

  • 08-08-2021 23:27:41 (UTC)
  • 09-08-2021 01:27:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9440, 13.1900 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.

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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
Fano PU 18 60888 60888

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NE of Fano (60888 inhabitants)
22 Km E of Pesaro (94582 inhabitants)
45 Km NW of Ancona (100861 inhabitants)
52 Km E of Rimini (147750 inhabitants)
79 Km E of Cesena (96758 inhabitants)
95 Km SE of Ravenna (159116 inhabitants)
97 Km E of Forlì (117913 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 2021-08-08
23:27:41		 43.9442 13.1898 8 2021-12-29
11:12:53		 Bollettino Sismico Italiano INGV 98626801
Reviewed
Rev100 		ML 1.5 2021-08-08
23:27:41		 43.9582 13.2197 10 2021-08-08
23:34:54		 Sala Sismica INGV-Roma 93863461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-08 23:27:41 ± 0.26
Latitude 43.9442 ± 0.0126
Longitude 13.1898 ± 0.0150
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 98626801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1426
Semi-minor axis of confidence ellipse (meter) 1220
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 356
Circular confidence region, given by single value of horizontal uncertainty (meter) 1430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 293
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) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.15918
Epicentral distance of station farthest from the epicenter (degree) 0.75273
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 98626801
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-17 16:42:41

ML:1.5

Field Value
Value 1.5
Uncertainty 0.5
Num. used stations 10
Type of magnitude ML
Reference to an origin 93863461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-08 23:34:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2021-08-08T23:28:03.82 0.3 undecidable manual S 229 69.375 50 0.32 67
IV.NARO.HHZ. 2021-08-08T23:28:01.50 0.6 undecidable manual S 233 61.1943 50 0.16 47
IV.ATPI.EHE. 2021-08-08T23:27:56.56 0.3 undecidable manual P 229 83.5497 50 -0.02 69
IV.APEC.HNN. 2021-08-08T23:27:55.21 0.3 undecidable manual P 236 75.0693 50 -0.06 70
IV.ATPC.HHE. 2021-08-08T23:27:55.84 0.6 undecidable manual P 229 78.0663 50 0.11 46
IV.SSFR.HHN. 2021-08-08T23:27:54.19 0.3 undecidable manual P 210 65.1903 50 0.45 66
IV.ATBU.EHZ. 2021-08-08T23:27:54.96 0.3 undecidable manual P 225 73.1712 50 -0.01 71
IV.PIEI.HHZ. 2021-08-08T23:27:54.11 0.1 undecidable manual P 229 69.375 50 -0.28 90
IV.PE3.EHE. 2021-08-08T23:27:53.45 0.3 undecidable manual P 244 61.9935 50 0.2 70
IV.NARO.HHZ. 2021-08-08T23:27:52.90 0.1 undecidable manual P 233 61.1943 50 -0.24 92
IV.FRON.EHZ. 2021-08-08T23:27:52.82 0.3 undecidable manual P 218 60.1953 50 -0.16 71
IV.CRTC.HHZ. 2021-08-08T23:27:52.89 0.6 undecidable manual S 232 31.3464 105 -0.31 48
IV.PESA.HHZ. 2021-08-08T23:27:51.94 0.6 undecidable manual S 269 27.9498 107 -0.12 50
IV.ARVD.HHE. 2021-08-08T23:27:51.88 0.3 undecidable manual P 202 53.3022 50 -0.04 73
IV.MPAG.EHZ. 2021-08-08T23:27:50.94 0.3 undecidable manual P 225 49.1175 50 -0.33 69
IV.CRTC.HHZ. 2021-08-08T23:27:48.29 0.1 undecidable manual P 232 31.3464 105 -0.15 99
IV.PESA.HHZ. 2021-08-08T23:27:47.92 0.1 positive manual P 269 27.9498 107 0.14 100
IV.FANO.HNN. 2021-08-08T23:27:46.34 0.3 undecidable manual P 231 17.6712 115 0.48 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PESA.HHN. ML:2.0 0.0004718537 0.5888 AML other m 2021-08-08T23:27:52.84
IV.PESA.HHE. ML:1.8 0.0003306734 0.2176 AML other m 2021-08-08T23:27:53.63
IV.NARO.HHE. ML:1.2 0.00003343007 0.9248 AML other m 2021-08-08T23:28:04.71
IV.PIEI.HHN. ML:1.2 0.00002818541 0.8352 AML other m 2021-08-08T23:28:04.38
IV.PIEI.HHE. ML:1.3 0.000034500000000000005 0.22 AML other m 2021-08-08T23:28:06.34
IV.NARO.HHN. ML:1.2 0.000037292905000000004 0.3488 AML other m 2021-08-08T23:28:07.92
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