Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 27-03-2021 and time 18:06:24 (Italy) in region 6 km N Petrella Salto (RI)

A magnitude ML 1.5 earthquake occured in region: 6 km N Petrella Salto (RI), on

  • 27-03-2021 17:06:24 (UTC)
  • 27-03-2021 18:06:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.3480, 13.0710 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
Petrella Salto RI 6 1197 1197
Castel Sant'Angelo RI 6 1308 2505
Borgo Velino RI 7 972 3477
Concerviano RI 7 291 3768
Antrodoco RI 8 2588 6356
Fiamignano RI 10 1413 7769
Cittaducale RI 11 6828 14597
Micigliano RI 12 127 14724
Longone Sabino RI 12 597 15321
Varco Sabino RI 13 187 15508
Marcetelli RI 14 89 15597
Rocca Sinibalda RI 14 815 16412
Belmonte in Sabina RI 15 636 17048
Scoppito AQ 16 3727 20775
Pescorocchiano RI 17 2075 22850
Castel di Tora RI 17 288 23138
Cagnano Amiterno AQ 18 1369 24507
Ascrea RI 18 234 24741
Colle di Tora RI 18 372 25113
Rieti RI 18 47698 72811
Paganico Sabino RI 19 172 72983
Borbona RI 19 617 73600
Torricella in Sabina RI 19 1342 74942
Cantalice RI 19 2755 77697
Collegiove RI 19 213 77910
Posta RI 20 694 78604

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km W of L'Aquila (69753 inhabitants)
42 Km SE of Terni (111501 inhabitants)
48 Km NE of Guidonia Montecelio (88673 inhabitants)
48 Km NE of Tivoli (56533 inhabitants)
63 Km SW of Teramo (54892 inhabitants)
70 Km NE of Roma (2864731 inhabitants)
74 Km SE of Foligno (57155 inhabitants)
77 Km NE of Velletri (53303 inhabitants)
80 Km E of Viterbo (67173 inhabitants)
89 Km NE of Pomezia (62966 inhabitants)
90 Km W of Chieti (51815 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
91 Km NE of Aprilia (73446 inhabitants)
94 Km NE of Fiumicino (78395 inhabitants)
95 Km W of Pescara (121014 inhabitants)
99 Km N of Latina (125985 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 1.5 2021-03-27
17:06:24		 42.3485 13.0708 9 2021-07-12
16:55:06		 Bollettino Sismico Italiano INGV 89259741
Reviewed
Rev100 		ML 1.6 2021-03-27
17:06:24		 42.3443 13.0595 9 2021-03-27
17:19:30		 Sala Sismica INGV-Roma 88527261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-27 17:06:24 ± 0.05
Latitude 42.3485 ± 0.0027
Longitude 13.0708 ± 0.0037
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 89259741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 285
Semi-minor axis of confidence ellipse (meter) 191
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 263
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 39
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.58546
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 88527261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-27 17:19:30

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 89259741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-19 13:50:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TREG.EHZ. 2021-03-27T17:08:14.03 3.0 undecidable manual Sg 17.940001 0
IV.GIZZ.HHZ. 2021-03-27T17:08:10.21 3.0 undecidable manual Sn 3.63 0
IV.ILOS.HHZ. 2021-03-27T17:08:09.38 3.0 undecidable manual Sn 3.02 0
ST.CARE.EHZ. 2021-03-27T17:07:42.46 3.0 undecidable manual Pg 14.87 0
IV.PIPA.HHZ. 2021-03-27T17:07:30.29 3.0 negative manual Pg 10.9 0
IV.ESCV.HHZ. 2021-03-27T17:07:28.11 3.0 undecidable manual Pn -0.68 0
IV.MBAL.EHZ. 2021-03-27T17:07:23.29 3.0 negative manual Pn 5.5 0
IV.ILOS.HHZ. 2021-03-27T17:07:19.84 3.0 undecidable manual Pn -0.37 0
IV.CAVE.HHZ. 2021-03-27T17:07:15.34 3.0 positive manual Pg 8.38 0
IV.VBKN.HHZ. 2021-03-27T17:07:09.31 3.0 undecidable manual Sn -1.09 0
IV.SLCN.HHZ. 2021-03-27T17:07:03.01 3.0 positive manual Pn 1.23 0
IV.FIR.HHZ. 2021-03-27T17:07:01.51 3.0 undecidable manual Pg 8.4 0
IV.SNAL.HHZ. 2021-03-27T17:06:54.86 3.0 undecidable manual Pg 1.21 0
IV.MTRA.EHE. 2021-03-27T17:06:41.36 0.6 undecidable manual S 30 52.503 50 0.38 43
IV.CESX.HHZ. 2021-03-27T17:06:40.30 0.3 undecidable manual S 306 49.0176 50 0.27 67
IV.CERT.HHZ. 2021-03-27T17:06:39.30 0.3 undecidable manual S 189 44.9217 50 0.36 66
IV.FAGN.HHZ. 2021-03-27T17:06:38.50 0.3 undecidable manual S 102 43.0236 50 0.05 70
IV.SMA1.EHN. 2021-03-27T17:06:37.51 0.3 undecidable manual S 35 38.0286 50 0.4 66
IV.GAVE.EHZ. 2021-03-27T17:06:37.82 0.3 undecidable manual S 339 40.7259 50 -0.02 71
IV.CAMP.HHZ. 2021-03-27T17:06:36.51 0.3 undecidable manual S 53 34.6431 50 0.32 68
IV.GUAR.HNN. 2021-03-27T17:06:36.19 0.6 undecidable manual P 162 64.5909 50 0.5 41
IV.ARRO.EHZ. 2021-03-27T17:06:36.39 0.3 undecidable manual S 316 35.742 50 -0.11 70
IV.MOMA.HNZ. 2021-03-27T17:06:35.57 0.1 undecidable manual P 321 64.9905 50 -0.19 88
IV.MMO1.EHZ. 2021-03-27T17:06:35.85 0.6 undecidable manual P 19 64.5909 50 0.16 44
IV.TERO.HHN. 2021-03-27T17:06:34.07 0.3 undecidable manual P 55 53.2023 50 0.14 68
IV.LNSS.HHZ. 2021-03-27T17:06:34.25 0.3 undecidable manual S 355 28.3494 108 -0.16 71
IV.RCAV.EHZ. 2021-03-27T17:06:34.57 0.1 undecidable manual P 191 56.5989 50 0.12 90
IT.CSO1.HGZ. 2021-03-27T17:06:34.47 0.3 undecidable manual S 177 27.4503 108 0.34 68
MN.AQU.HNE. 2021-03-27T17:06:34.22 0.3 undecidable manual S 89 27.3504 109 0.12 71
IT.MMP1.HGE. 2021-03-27T17:06:34.81 0.3 undecidable manual S 248 28.6491 108 0.29 69
IV.CESX.HHZ. 2021-03-27T17:06:33.47 0.3 undecidable manual P 306 49.0176 50 0.18 68
IV.NRCA.HHZ. 2021-03-27T17:06:33.81 0.3 undecidable manual P 4 53.9016 50 -0.24 66
IV.MTRA.EHE. 2021-03-27T17:06:33.52 0.1 undecidable manual P 30 52.503 50 -0.31 87
IV.SRES.HHN. 2021-03-27T17:06:33.25 0.3 undecidable manual P 255 47.619 50 0.17 68
IV.CERT.HHZ. 2021-03-27T17:06:32.22 0.3 undecidable manual P 189 44.9217 50 -0.44 65
IV.MTCE.HHE. 2021-03-27T17:06:32.34 0.3 undecidable manual P 217 45.1215 50 -0.35 66
IV.PTQR.HHZ. 2021-03-27T17:06:32.39 0.1 undecidable manual P 143 45.2214 50 -0.32 88
IV.RM33.EHZ. 2021-03-27T17:06:32.51 0.3 undecidable manual S 33 21.3675 113 0.38 68
IV.FAGN.HHZ. 2021-03-27T17:06:32.14 0.3 undecidable manual P 102 43.0236 50 -0.23 68
IV.ARRO.EHZ. 2021-03-27T17:06:31.09 0.3 undecidable manual P 316 35.742 50 -0.16 70
IV.SMA1.EHN. 2021-03-27T17:06:31.65 0.3 undecidable manual P 35 38.0286 50 0.05 71
IV.CAMP.HHZ. 2021-03-27T17:06:31.10 0.3 undecidable manual P 53 34.6431 50 0.03 72
IV.GIGS.HHN. 2021-03-27T17:06:31.92 0.1 undecidable manual P 74 42.7239 50 -0.4 87
IV.GAVE.EHZ. 2021-03-27T17:06:31.78 0.3 undecidable manual P 339 40.7259 50 -0.24 68
IV.T1299.HNZ. 2021-03-27T17:06:31.30 0.3 undecidable manual P 29 36.1416 50 0 72
IT.MMP1.HGE. 2021-03-27T17:06:30.31 0.3 undecidable manual P 248 28.6491 108 0.2 70
IV.RM33.EHZ. 2021-03-27T17:06:29.06 0.6 undecidable manual P 33 21.3675 113 0.33 46
IV.LNSS.HHZ. 2021-03-27T17:06:29.83 0.1 undecidable manual P 355 28.3494 108 -0.21 93
IT.CSO1.HGZ. 2021-03-27T17:06:29.81 0.1 undecidable manual P 177 27.4503 108 -0.07 96
MN.AQU.HNE. 2021-03-27T17:06:29.75 0.3 undecidable manual P 89 27.3504 109 -0.11 71
IV.FIAM.HHZ. 2021-03-27T17:06:28.46 0.3 undecidable manual S 157 9.6792 133 -0.25 72
IV.FIAM.HHZ. 2021-03-27T17:06:26.77 0.1 undecidable manual P 157 9.6792 133 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FIAM.HHN. ML:1.7 0.000693 0.4 AML other m 2021-03-27T17:06:28.77
IV.FIAM.HHE. ML:1.8 0.0008959999999999999 0.42 AML other m 2021-03-27T17:06:28.98
IV.RM33.EHN. ML:1.8 0.000459 1.44 AML other m 2021-03-27T17:06:33.85
IV.RM33.EHE. ML:1.9 0.0005975 0.32 AML other m 2021-03-27T17:06:33.72
IV.ARRO.EHE. ML:1.5 0.0001264 0.58 AML other m 2021-03-27T17:06:36.67
IV.ARRO.EHN. ML:1.7 0.0001785 0.14 AML other m 2021-03-27T17:06:36.98
IV.LNSS.HHN. ML:1.6 0.0002185 1.58 AML other m 2021-03-27T17:06:37.05
IV.LNSS.HHE. ML:1.5 0.0001675 1.54 AML other m 2021-03-27T17:06:38.98
IV.GAVE.EHE. ML:1.7 0.00015775 0.18 AML other m 2021-03-27T17:06:42.20
IV.CESX.HHE. ML:1.4 0.00006214999999999999 0.62 AML other m 2021-03-27T17:06:42.09
IV.NRCA.HHN. ML:1.4 0.000057749999999999994 0.12 AML other m 2021-03-27T17:06:42.53
IV.GAVE.EHN. ML:1.5 0.0001145 0.44 AML other m 2021-03-27T17:06:42.81
IV.NRCA.HHE. ML:1.5 0.000075 0.14 AML other m 2021-03-27T17:06:43.55
IV.CERT.HHE. ML:1.0 0.000031 1.04 AML other m 2021-03-27T17:06:44.91
IV.CESX.HHN. ML:1.3 0.00005615 1.5 AML other m 2021-03-27T17:06:44.20
IV.CERT.HHN. ML:1.3 0.000053150000000000004 0.9 AML other m 2021-03-27T17:06:45.08
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