Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 27-11-2021 and time 17:31:52 (Italy) in region 2 km W Casteldelci (RN)

A magnitude ML 1.1 earthquake occured in region: 2 km W Casteldelci (RN), on

  • 27-11-2021 16:31:52 (UTC)
  • 27-11-2021 17:31:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.7840, 12.1310 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
Casteldelci RN 2 407 407
Badia Tedalda AR 10 1087 1494
Verghereto FC 10 1907 3401
Sant'Agata Feltria RN 11 2151 5552
Pennabilli RN 12 2869 8421
Pieve Santo Stefano AR 15 3183 11604
Bagno di Romagna FC 15 6026 17630
Sarsina FC 15 3446 21076
Sestino AR 16 1355 22431
Carpegna PU 17 1674 24105
Maiolo RN 18 848 24953
Novafeltria RN 18 7164 32117
Chiusi della Verna AR 18 2023 34140
Talamello RN 18 1104 35244
Borgo Pace PU 19 606 35850
Caprese Michelangelo AR 19 1426 37276
Montecopiolo PU 20 1128 38404
Mercato Saraceno FC 20 6886 45290

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km S of Cesena (96758 inhabitants)
41 Km NE of Arezzo (99543 inhabitants)
47 Km SW of Rimini (147750 inhabitants)
49 Km S of Forlì (117913 inhabitants)
59 Km SE of Faenza (58541 inhabitants)
64 Km W of Pesaro (94582 inhabitants)
70 Km E of Firenze (382808 inhabitants)
71 Km S of Ravenna (159116 inhabitants)
72 Km SE of Imola (69797 inhabitants)
72 Km W of Fano (60888 inhabitants)
76 Km E of Scandicci (50609 inhabitants)
78 Km N of Perugia (166134 inhabitants)
83 Km NE of Siena (53903 inhabitants)
84 Km E of Prato (191150 inhabitants)
99 Km E of Pistoia (90315 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 1.1 2021-11-27
16:31:52		 43.7845 12.1313 10 2022-03-30
13:04:31		 Bollettino Sismico Italiano INGV 99939791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-27 16:31:52 ± 0.11
Latitude 43.7845 ± 0.0054
Longitude 12.1313 ± 0.0050
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99939791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 671
Semi-minor axis of confidence ellipse (meter) 158
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 205
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 168
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.38311
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 99939791
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-08 18:10:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MPNC.HHZ. 2021-11-27T16:33:35.24 3.0 negative manual Pg 17.32 0
IV.ECTS.HHZ. 2021-11-27T16:33:21.96 3.0 undecidable manual Pn 1.63 0
GU.ENR.HHZ. 2021-11-27T16:33:12.19 3.0 undecidable manual Sn 7.28 0
IV.SPS2.HHZ. 2021-11-27T16:33:08.37 3.0 positive manual Pn -0.75 0
IV.GIB.HHZ. 2021-11-27T16:33:08.06 3.0 undecidable manual Pn -7.21 0
IV.MTGR.HHZ. 2021-11-27T16:33:08.58 3.0 positive manual Pn -5.38 0
IV.RMP.HHZ. 2021-11-27T16:33:04.13 3.0 undecidable manual Sg 9.94 0
CR.ZAG.BHZ. 2021-11-27T16:32:50.44 3.0 positive manual Pg 17.83 0
OX.DRE.HHZ. 2021-11-27T16:32:42.44 3.0 undecidable manual Sn -5.15 0
GU.BURY.HHZ. 2021-11-27T16:32:41.04 3.0 negative manual Pg 13.55 0
IV.COLB.HHZ. 2021-11-27T16:32:34.54 3.0 negative manual Pn -5.18 0
IV.LAV9.HHZ. 2021-11-27T16:32:32.86 3.0 positive manual Pg 9.14 0
IV.VIVA.HHZ. 2021-11-27T16:32:27.82 3.0 undecidable manual Pg 4.82 0
IV.ARVD.HHZ. 2021-11-27T16:32:26.48 3.0 undecidable manual Sg 2.87 0
ST.CARE.HNZ. 2021-11-27T16:32:26.22 3.0 undecidable manual Pg 9.14 0
IV.LRP.EHZ. 2021-11-27T16:32:26.60 3.0 negative manual Pn -0.7 0
GU.ENR.HHZ. 2021-11-27T16:32:23.85 3.0 positive manual Pn -4.21 0
IV.MMUR.HNZ. 2021-11-27T16:32:23.04 3.0 undecidable manual Sn -1.92 0
IV.SBPO.HNZ. 2021-11-27T16:32:17.42 3.0 undecidable manual Sn -0.55 0
IV.EUCT.HNZ. 2021-11-27T16:32:14.55 3.0 undecidable manual Pn 0.06 0
IV.FREG.EHZ. 2021-11-27T16:32:10.45 3.0 undecidable manual Pn -0.74 0
IV.SGAL.EHZ. 2021-11-27T16:32:07.12 3.0 negative manual Pn -1.98 0
IV.NARO.HHZ. 2021-11-27T16:32:06.24 0.3 undecidable manual S 118 40.8258 50 -0.08 71
IV.MML1.EHZ. 2021-11-27T16:32:06.50 3.0 negative manual Pn -1.8 0
IV.PIEI.HNN. 2021-11-27T16:32:06.68 0.6 undecidable manual S 130 42.5241 50 -0.09 47
IV.ATMC.EHE. 2021-11-27T16:32:05.51 0.6 undecidable manual S 172 37.7289 50 0.01 48
IV.BADI.EHE. 2021-11-27T16:32:04.01 0.6 undecidable manual S 163 31.8459 50 0.11 48
IV.PE3.EHZ. 2021-11-27T16:32:04.33 0.6 undecidable manual S 108 30.8469 50 0.68 41
IV.ASQU.HHZ. 2021-11-27T16:32:02.98 0.6 undecidable manual S 273 27.4503 50 0.25 47
IV.FOSV.EHZ. 2021-11-27T16:32:02.33 3.0 negative manual P -3.22 0
IV.SFI.HNZ. 2021-11-27T16:32:02.59 0.6 undecidable manual S 300 26.3514 50 0.14 48
IV.CRE.HHZ. 2021-11-27T16:32:01.67 0.6 undecidable manual S 218 23.3544 113 0.12 49
IV.PIEI.HNN. 2021-11-27T16:32:00.77 0.3 undecidable manual P 130 42.5241 50 -0.07 71
IV.NARO.HHZ. 2021-11-27T16:32:00.39 0.3 undecidable manual P 118 40.8258 50 -0.18 70
IV.PE3.EHZ. 2021-11-27T16:31:59.32 0.6 undecidable manual P 108 30.8469 50 0.29 46
IV.ATMC.EHE. 2021-11-27T16:31:59.86 0.3 undecidable manual P 172 37.7289 50 -0.24 69
IV.PARC.HHZ. 2021-11-27T16:31:59.75 0.3 undecidable manual S 150 17.3715 120 0.06 75
IV.SFI.HNZ. 2021-11-27T16:31:58.13 0.3 undecidable manual P 300 26.3514 50 -0.21 71
IV.ASQU.HHZ. 2021-11-27T16:31:58.47 0.1 undecidable manual P 273 27.4503 50 -0.04 98
IV.BADI.EHE. 2021-11-27T16:31:58.99 0.1 undecidable manual P 163 31.8459 50 -0.19 94
IV.OSSC.HHZ. 2021-11-27T16:31:58.76 3.0 undecidable manual P -2.26 0
IV.CRE.HHZ. 2021-11-27T16:31:57.90 0.1 positive manual P 218 23.3544 113 0.08 98
IV.PARC.HHZ. 2021-11-27T16:31:56.71 0.1 undecidable manual P 150 17.3715 120 -0.03 100
IV.BRIS.HHZ. 2021-11-27T16:31:54.63 3.0 undecidable manual P -1.97 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PARC.HHN. ML:1.1 0.00010145 0.16 AML other m 2021-11-27T16:31:59.92
IV.PARC.HHE. ML:1.1 0.00010785 1.8 AML other m 2021-11-27T16:31:59.01
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