Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 27-03-2021 and time 13:37:27 (UTC) in region 5 km W Borgo Pace (PU)

A magnitude ML 0.9 earthquake occured in region: 5 km W Borgo Pace (PU), on

  • 27-03-2021 13:37:27 (UTC)
  • 27-03-2021 14:37:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.6650, 12.2290 at 10 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
Borgo Pace PU 5 606 606
Badia Tedalda AR 6 1087 1693
Sestino AR 7 1355 3048
Mercatello sul Metauro PU 9 1378 4426
Sansepolcro AR 13 15884 20310
Belforte all'Isauro PU 13 769 21079
San Giustino PG 13 11297 32376
Sant'Angelo in Vado PU 15 4133 36509
Pieve Santo Stefano AR 15 3183 39692
Casteldelci RN 15 407 40099
Carpegna PU 16 1674 41773
Frontino PU 16 293 42066
Piandimeleto PU 17 2167 44233
Pennabilli RN 17 2869 47102
Lunano PU 19 1527 48629
Anghiari AR 19 5638 54267
Apecchio PU 19 1882 56149
Caprese Michelangelo AR 20 1426 57575
Pietrarubbia PU 20 660 58235

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NE of Arezzo (99543 inhabitants)
52 Km SW of Rimini (147750 inhabitants)
53 Km S of Cesena (96758 inhabitants)
62 Km W of Pesaro (94582 inhabitants)
63 Km N of Perugia (166134 inhabitants)
64 Km S of Forlì (117913 inhabitants)
67 Km W of Fano (60888 inhabitants)
74 Km SE of Faenza (58541 inhabitants)
79 Km E of Firenze (382808 inhabitants)
82 Km E of Siena (53903 inhabitants)
84 Km S of Ravenna (159116 inhabitants)
85 Km E of Scandicci (50609 inhabitants)
87 Km SE of Imola (69797 inhabitants)
88 Km NW of Foligno (57155 inhabitants)
94 Km E of Prato (191150 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 2021-03-27
13:37:27		 43.6647 12.229 10 2021-07-12
16:55:06		 Bollettino Sismico Italiano INGV 89088981
Reviewed
Rev100 		ML 0.8 2021-03-27
13:37:27		 43.6947 12.2438 8 2021-03-27
13:49:05		 Sala Sismica INGV-Roma 88516411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-27 13:37:27 ± 0.09
Latitude 43.6647 ± 0.0054
Longitude 12.2290 ± 0.0062
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89088981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 646
Semi-minor axis of confidence ellipse (meter) 409
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) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.01709
Epicentral distance of station farthest from the epicenter (degree) 0.34354
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 89088981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-07-07 09:23:37

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 3
Type of magnitude ML
Reference to an origin 88516411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 13:49:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASQU.HHZ. 2021-03-27T13:37:40.00 0.3 undecidable manual S 293 38.1285 50 -0.17 74
IV.PIEI.HHZ. 2021-03-27T13:37:37.18 0.3 undecidable manual S 120 28.4493 50 -0.39 72
IV.ATPC.HHZ. 2021-03-27T13:37:37.73 0.3 undecidable manual S 138 27.4503 50 0.43 71
IV.NARO.HHZ. 2021-03-27T13:37:37.19 0.3 undecidable manual S 102 28.8489 50 -0.49 70
IV.CRE.HHZ. 2021-03-27T13:37:36.20 0.3 undecidable manual S 257 22.8549 114 0.24 75
IV.ATMC.EHZ. 2021-03-27T13:37:36.58 0.6 undecidable manual S 187 24.3534 112 0.14 51
IV.APEC.HNZ. 2021-03-27T13:37:35.28 0.6 undecidable manual S 127 19.3695 118 0.42 48
IV.PE3.EHZ. 2021-03-27T13:37:35.75 0.6 undecidable manual S 81 21.7671 115 0.14 51
IV.ATBU.EHZ. 2021-03-27T13:37:34.34 0.3 undecidable manual P 129 33.1446 50 0.39 71
IV.ASQU.HHZ. 2021-03-27T13:37:34.44 0.3 undecidable manual P 293 38.1285 50 -0.28 72
IV.CPGN.EHZ. 2021-03-27T13:37:34.75 0.3 undecidable manual S 26 16.7721 121 0.65 67
IV.SSP9.EHZ. 2021-03-27T13:37:33.17 0.3 undecidable manual S 218 12.7761 128 0.23 76
IV.PIEI.HHZ. 2021-03-27T13:37:33.12 0.3 undecidable manual P 120 28.4493 50 -0.11 76
IV.ATPC.HHZ. 2021-03-27T13:37:33.39 0.3 undecidable manual P 138 27.4503 50 0.32 73
IV.NARO.HHZ. 2021-03-27T13:37:33.02 0.3 undecidable manual P 102 28.8489 50 -0.27 74
IV.ATPI.EHZ. 2021-03-27T13:37:33.40 0.3 undecidable manual P 150 27.5502 50 0.31 73
IV.PE3.EHZ. 2021-03-27T13:37:32.12 0.3 undecidable manual P 81 21.7671 115 0.03 78
IV.CRE.HHZ. 2021-03-27T13:37:32.21 0.3 undecidable manual P 257 22.8549 114 -0.09 77
IV.ATMC.EHZ. 2021-03-27T13:37:32.33 0.3 undecidable manual P 187 24.3534 112 -0.25 74
IV.APEC.HNZ. 2021-03-27T13:37:31.44 0.3 undecidable manual P 127 19.3695 118 -0.22 75
IV.CPGN.EHZ. 2021-03-27T13:37:31.39 0.3 undecidable manual P 26 16.7721 121 0.17 77
IV.SSP9.EHZ. 2021-03-27T13:37:30.86 0.3 undecidable manual P 218 12.7761 128 0.3 75
IV.PARC.HHZ. 2021-03-27T13:37:29.98 0.3 undecidable manual S 157 1.8981 169 -0.88 63
IV.PARC.HHZ. 2021-03-27T13:37:28.96 0.1 undecidable manual P 157 1.8981 169 -0.39 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PARC.HHN. ML:1.2 0.000307 0.14 AML other m 2021-03-27T13:37:30.08
IV.PARC.HHE. ML:1.2 0.00030030679999999997 0.0768 AML other m 2021-03-27T13:37:30.17
IV.SSP9.EHE. ML:0.4 0.000031433694999999997 1.8816 AML other m 2021-03-27T13:37:32.70
IV.SSP9.EHN. ML:0.5 0.000033738325 1.5616 AML other m 2021-03-27T13:37:33.62
IV.PIEI.HHN. ML:0.8 0.0000289 0.16 AML other m 2021-03-27T13:37:37.84
IV.PIEI.HHE. ML:1.1 0.000060100000000000004 0.14 AML other m 2021-03-27T13:37:37.97
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