Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 21-03-2021 and time 01:44:06 (Italy) in region 3 km W Badia Tedalda (AR)

A magnitude ML 1.3 earthquake occured in region: 3 km W Badia Tedalda (AR), on

  • 21-03-2021 00:44:06 (UTC)
  • 21-03-2021 01:44:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.7200, 12.1490 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.

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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
Badia Tedalda AR 3 1087 1087
Casteldelci RN 8 407 1494
Pieve Santo Stefano AR 10 3183 4677
Sestino AR 12 1355 6032
Borgo Pace PU 14 606 6638
Verghereto FC 14 1907 8545
Pennabilli RN 15 2869 11414
Caprese Michelangelo AR 16 1426 12840
Sansepolcro AR 17 15884 28724
Carpegna PU 17 1674 30398
Sant'Agata Feltria RN 17 2151 32549
Mercatello sul Metauro PU 17 1378 33927
Chiusi della Verna AR 17 2023 35950
Belforte all'Isauro PU 18 769 36719
Frontino PU 19 293 37012
San Giustino PG 19 11297 48309

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NE of Arezzo (99543 inhabitants)
47 Km S of Cesena (96758 inhabitants)
51 Km SW of Rimini (147750 inhabitants)
57 Km S of Forlì (117913 inhabitants)
65 Km W of Pesaro (94582 inhabitants)
67 Km SE of Faenza (58541 inhabitants)
71 Km N of Perugia (166134 inhabitants)
71 Km W of Fano (60888 inhabitants)
72 Km E of Firenze (382808 inhabitants)
78 Km S of Ravenna (159116 inhabitants)
78 Km E of Scandicci (50609 inhabitants)
79 Km SE of Imola (69797 inhabitants)
80 Km NE of Siena (53903 inhabitants)
86 Km E of Prato (191150 inhabitants)
96 Km NW of Foligno (57155 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 1.3 2021-03-21
00:44:06		 43.72 12.149 11 2021-07-12
16:55:03		 Bollettino Sismico Italiano INGV 88370541
Reviewed
Rev100 		ML 1.3 2021-03-21
00:44:06		 43.7192 12.1483 12 2021-03-21
00:51:05		 Sala Sismica INGV-Roma 88332371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-21 00:44:06 ± 0.1
Latitude 43.7200 ± 0.0063
Longitude 12.1490 ± 0.0075
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88370541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 764
Semi-minor axis of confidence ellipse (meter) 310
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 207
Circular confidence region, given by single value of horizontal uncertainty (meter) 760.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.09623
Epicentral distance of station farthest from the epicenter (degree) 0.57467
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 88370541
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-14 10:47:23

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 88332371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-21 00:51:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2021-03-21T00:44:25.97 0.3 undecidable manual S 122 59.7957 50 1.14 48
IV.FRON.EHZ. 2021-03-21T00:44:23.25 0.6 undecidable manual S 116 51.5151 50 0.65 40
IV.RUFI.EHZ. 2021-03-21T00:44:23.50 0.6 undecidable manual S 285 52.9026 50 0.53 42
IV.NARO.HHZ. 2021-03-21T00:44:18.40 0.6 undecidable manual S 109 36.741 50 -0.25 46
IV.PIEI.HHZ. 2021-03-21T00:44:18.67 0.6 undecidable manual S 123 37.1295 50 -0.1 48
IV.BRIS.HHN. 2021-03-21T00:44:17.79 0.6 undecidable manual P 332 63.7917 50 0.18 45
IV.ASQU.HHE. 2021-03-21T00:44:17.14 0.6 undecidable manual S 287 30.0477 50 0.26 47
IV.SFI.HNE. 2021-03-21T00:44:17.42 0.6 undecidable manual S 310 31.746 50 0.1 48
IV.PE3.EHZ. 2021-03-21T00:44:16.71 0.6 undecidable manual S 95 27.9498 50 0.38 46
IV.APEC.HHZ. 2021-03-21T00:44:16.89 0.6 undecidable manual S 129 28.1496 50 0.51 44
IV.SSFR.HHZ. 2021-03-21T00:44:16.61 0.3 undecidable manual P 122 59.7957 50 -0.4 65
IV.CAFI.HHZ. 2021-03-21T00:44:15.07 0.3 undecidable manual P 199 45.8208 50 0.23 69
IV.FRON.EHZ. 2021-03-21T00:44:15.38 0.3 undecidable manual P 116 51.5151 50 -0.34 67
IV.BADI.EHZ. 2021-03-21T00:44:15.56 0.6 undecidable manual S 162 24.5532 50 0.15 48
IV.RUFI.EHZ. 2021-03-21T00:44:15.89 0.3 undecidable manual P 285 52.9026 50 -0.04 71
IV.CPGN.EHZ. 2021-03-21T00:44:13.78 0.3 undecidable manual S 57 16.4724 123 0.66 64
IV.SSP9.EHZ. 2021-03-21T00:44:13.60 0.3 undecidable manual S 185 16.2726 123 0.52 68
IV.APEC.HHZ. 2021-03-21T00:44:12.01 0.1 undecidable manual P 129 28.1496 50 -0.12 97
IV.SFI.HNE. 2021-03-21T00:44:12.35 0.1 undecidable manual P 310 31.746 50 -0.32 92
IV.NARO.HHZ. 2021-03-21T00:44:12.79 0.1 undecidable manual P 109 36.741 50 -0.65 83
IV.PE3.EHZ. 2021-03-21T00:44:12.06 0.1 undecidable manual P 95 27.9498 50 -0.04 98
IV.PIEI.HHZ. 2021-03-21T00:44:12.97 0.1 undecidable manual P 123 37.1295 50 -0.54 87
IV.ASQU.HHE. 2021-03-21T00:44:12.34 0.1 undecidable manual P 287 30.0477 50 -0.08 97
IV.BADI.EHZ. 2021-03-21T00:44:11.38 0.1 undecidable manual P 162 24.5532 50 -0.19 96
IV.PARC.HHZ. 2021-03-21T00:44:11.28 0.3 undecidable manual S 138 10.6782 135 -0.29 72
IV.SSP9.EHZ. 2021-03-21T00:44:10.28 0.1 undecidable manual P 185 16.2726 123 0.06 100
IV.CPGN.EHZ. 2021-03-21T00:44:10.34 0.3 undecidable manual P 57 16.4724 123 0.09 74
IV.PARC.HHZ. 2021-03-21T00:44:09.12 0.1 undecidable manual P 138 10.6782 135 -0.23 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PARC.HHN. ML:1.3 0.000223 0.1 AML other m 2021-03-21T00:44:11.71
IV.PARC.HHE. ML:1.2 0.0002006481 0.26 AML other m 2021-03-21T00:44:13.73
IV.SSP9.EHN. ML:1.1 0.00010700326 0 AML other m 2021-03-21T00:44:14.21
IV.SSP9.EHE. ML:0.8 0.00005792993999999999 1.5 AML other m 2021-03-21T00:44:13.55
IV.CPGN.HNN. ML:1.5 0.00028083445000000003 0.36 AML other m 2021-03-21T00:44:14.20
IV.CPGN.EHN. ML:1.4 0.000247337595 0.28 AML other m 2021-03-21T00:44:14.59
IV.CPGN.HNE. ML:1.4 0.00023079250000000002 0.36 AML other m 2021-03-21T00:44:14.77
IV.CPGN.EHE. ML:1.4 0.0002292299 0.3 AML other m 2021-03-21T00:44:15.52
IV.BADI.EHN. ML:1.0 0.00005753214500000001 0.16 AML other m 2021-03-21T00:44:16.05
IV.PE3.EHE. ML:1.5 0.0001729886 1.08 AML other m 2021-03-21T00:44:16.19
IV.APEC.HHE. ML:0.8 0.000029978320000000002 0.52 AML other m 2021-03-21T00:44:16.76
IV.APEC.HNN. ML:2.4 0.00116171 1.23 AML other m 2021-03-21T00:44:17.42
IV.APEC.HHN. ML:0.9 0.00004663386 0.6 AML other m 2021-03-21T00:44:16.51
IV.APEC.HNE. ML:2.0 0.0005833714000000001 1.25 AML other m 2021-03-21T00:44:17.98
IV.PE3.EHN. ML:1.7 0.00023287215 0.2 AML other m 2021-03-21T00:44:17.74
IV.PIEI.HHN. ML:1.1 0.000051940694999999995 0.1 AML other m 2021-03-21T00:44:19.23
IV.NARO.HHN. ML:1.2 0.0000634423 0.08 AML other m 2021-03-21T00:44:19.25
IV.PIEI.HHE. ML:1.2 0.000058747844999999997 0.12 AML other m 2021-03-21T00:44:19.78
IV.NARO.HHE. ML:1.1 0.00004561671000000001 0.08 AML other m 2021-03-21T00:44:19.76
IV.CAFI.HNN. ML:2.1 0.00034848075 0.96 AML other m 2021-03-21T00:44:21.63
IV.BADI.EHE. ML:0.9 0.0000518847 0.32 AML other m 2021-03-21T00:44:21.19
IV.FRON.EHE. ML:1.2 0.00003580575 1.26 AML other m 2021-03-21T00:44:23.57
IV.RUFI.EHN. ML:1.1 0.000028059385000000003 1.68 AML other m 2021-03-21T00:44:23.47
IV.RUFI.EHE. ML:1.2 0.00004120211 2.28 AML other m 2021-03-21T00:44:23.34
IV.FRON.EHN. ML:1.2 0.000033146734000000005 0.1 AML other m 2021-03-21T00:44:25.12
IV.CAFI.HHN. ML:0.5 0.000008464845 0.36 AML other m 2021-03-21T00:44:25.31
IV.SSFR.HHE. ML:1.3 0.000045358235 0.18 AML other m 2021-03-21T00:44:26.40
IV.SSFR.HNE. ML:1.9 0.00016004390000000002 1.69 AML other m 2021-03-21T00:44:28.54
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