Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 28-05-2020 and time 20:25:48 (Italy) in region 6 km SW Cittareale (RI)

A magnitude ML 1.1 earthquake occured in region: 6 km SW Cittareale (RI), on

  • 28-05-2020 18:25:48 (UTC)
  • 28-05-2020 20:25:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5730, 13.1300 at 12 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Cittareale RI 6 482 482
Posta RI 6 694 1176
Borbona RI 7 617 1793
Montereale AQ 11 2581 4374
Leonessa RI 14 2435 6809
Amatrice RI 15 2657 9466
Micigliano RI 15 127 9593
Cagnano Amiterno AQ 15 1369 10962
Capitignano AQ 15 665 11627
Accumoli RI 17 667 12294
Monteleone di Spoleto PG 17 599 12893
Antrodoco RI 18 2588 15481
Barete AQ 18 737 16218
Cascia PG 19 3217 19435
Borgo Velino RI 19 972 20407
Campotosto AQ 20 542 20949

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of L'Aquila (69753 inhabitants)
40 Km E of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
72 Km NE of Guidonia Montecelio (88673 inhabitants)
73 Km NE of Tivoli (56533 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
86 Km E of Viterbo (67173 inhabitants)
89 Km W of Chieti (51815 inhabitants)
90 Km W of Pescara (121014 inhabitants)
92 Km NE of Roma (2864731 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
Reviewed
Rev100 		ML 1.1 2020-05-28
18:25:48		 42.5732 13.1298 12 2020-05-28
18:37:26		 Sala Sismica INGV-Roma 79664281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-28 18:25:48 ± 0.05
Latitude 42.5732 ± 0.0027
Longitude 13.1298 ± 0.0049
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79664281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 367
Semi-minor axis of confidence ellipse (meter) 99
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 279
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.07195
Epicentral distance of station farthest from the epicenter (degree) 0.46405
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 79664281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-28 18:37:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2020-05-28T18:26:04.70 0.3 undecidable manual S 356 51.5151 92 0.27 67
IV.TERO.HHZ. 2020-05-28T18:26:00.97 0.3 undecidable manual S 82 39.1275 92 -0.15 70
IV.FIAM.HHZ. 2020-05-28T18:25:59.60 0.3 undecidable manual S 182 33.8439 93 -0.12 71
IV.ARRO.EHZ. 2020-05-28T18:25:58.60 1.0 undecidable manual S 271 29.748 94 -0.02 24
IV.MTRA.EHZ. 2020-05-28T18:25:58.60 0.3 undecidable manual S 47 29.8479 94 -0.04 73
IV.NRCA.HHZ. 2020-05-28T18:25:58.10 0.3 undecidable manual S 357 28.9488 94 -0.3 70
IV.FDMO.HHZ. 2020-05-28T18:25:57.61 0.3 undecidable manual P 356 51.5151 92 0.03 71
IV.CAMP.HHZ. 2020-05-28T18:25:56.90 0.6 undecidable manual S 100 23.1546 96 0.02 50
IV.TERO.HHZ. 2020-05-28T18:25:55.57 0.3 undecidable manual P 82 39.1275 92 -0.1 71
IV.SMA1.EHZ. 2020-05-28T18:25:55.60 0.3 undecidable manual S 69 17.9709 101 0.11 74
IV.NRCA.HHZ. 2020-05-28T18:25:54.02 0.3 undecidable manual P 357 28.9488 94 -0.08 73
IV.ARRO.EHZ. 2020-05-28T18:25:54.24 0.3 undecidable manual P 271 29.748 94 0.01 74
IV.MTRA.EHZ. 2020-05-28T18:25:54.21 0.3 undecidable manual P 47 29.8479 94 -0.02 73
IV.FIAM.HHZ. 2020-05-28T18:25:54.92 0.3 undecidable manual P 182 33.8439 93 0.06 73
IV.RM33.EHZ. 2020-05-28T18:25:53.30 0.3 undecidable manual S 136 9.879 127 -0.24 73
IV.CAMP.HHZ. 2020-05-28T18:25:53.31 0.3 undecidable manual P 100 23.1546 96 0.09 74
IV.LNSS.HHZ. 2020-05-28T18:25:52.90 0.1 undecidable manual S 294 7.9809 136 -0.25 99
IV.SMA1.EHZ. 2020-05-28T18:25:52.74 0.1 undecidable manual P 69 17.9709 101 0.32 94
IV.LNSS.HHZ. 2020-05-28T18:25:51.16 0.1 undecidable manual P 294 7.9809 136 0.09 100
IV.RM33.EHZ. 2020-05-28T18:25:51.47 0.1 positive manual P 136 9.879 127 0.18 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.6 0.00046717855 0.1152 AML other m 2020-05-28T18:25:53.21
IV.LNSS.HHN. ML:1.5 0.00040707744999999993 0.2944 AML other m 2020-05-28T18:25:53.14
IV.LNSS.HNE. ML:1.6 0.00046335170000000005 0.128 AML other m 2020-05-28T18:25:53.22
IV.LNSS.HNN. ML:1.4 0.00034172635 0.2944 AML other m 2020-05-28T18:25:53.14
IV.RM33.EHE. ML:1.2 0.00018624405 0.192 AML other m 2020-05-28T18:25:53.67
IV.RM33.EHN. ML:1.2 0.00019927805 0.128 AML other m 2020-05-28T18:25:53.47
IV.RM33.HNE. ML:1.2 0.00019917105 0.2048 AML other m 2020-05-28T18:25:53.66
IV.RM33.HNN. ML:1.3 0.00020526547 0.1152 AML other m 2020-05-28T18:25:53.46
IV.SMA1.EHE. ML:1.0 0.00007731442 0.1408 AML other m 2020-05-28T18:25:56.40
IV.SMA1.EHN. ML:1.1 0.00009696861000000001 0.1152 AML other m 2020-05-28T18:25:56.03
IV.NRCA.HNE. ML:1.5 0.000152563105 0.1408 AML other m 2020-05-28T18:25:58.49
IV.NRCA.HNN. ML:1.3 0.0000986337569 0.1152 AML other m 2020-05-28T18:25:59.08
IV.NRCA.HHE. ML:1.5 0.0001561619 0.1536 AML other m 2020-05-28T18:25:58.48
IV.NRCA.HHN. ML:1.3 0.000101574095 0.1152 AML other m 2020-05-28T18:25:59.08
IV.MTRA.HNE. ML:0.9 0.000041436795 0.1152 AML other m 2020-05-28T18:25:58.91
IV.MTRA.HNN. ML:1.0 0.000049729715 0.128 AML other m 2020-05-28T18:25:58.73
IV.MTRA.EHE. ML:1.0 0.000042837495000000004 0.1024 AML other m 2020-05-28T18:25:58.85
IV.MTRA.EHN. ML:1.0 0.000044906229999999996 0.0768 AML other m 2020-05-28T18:25:58.79
IV.ARRO.EHE. ML:0.8 0.000030486825000000003 0.1792 AML other m 2020-05-28T18:25:58.55
IV.ARRO.EHN. ML:0.9 0.00003982409 0.128 AML other m 2020-05-28T18:25:58.98
IV.FIAM.HHE. ML:0.6 0.000017309789999999997 0.2048 AML other m 2020-05-28T18:26:00.94
IV.FIAM.HHN. ML:0.6 0.00001612231 0.3328 AML other m 2020-05-28T18:26:00.65
IV.TERO.HHE. ML:0.9 0.00002265029 0.1408 AML other m 2020-05-28T18:26:02.39
IV.TERO.HHN. ML:0.9 0.000023879295000000003 0.0512 AML other m 2020-05-28T18:26:01.56
IV.FDMO.HHE. ML:0.6 0.000008308939 0.256 AML other m 2020-05-28T18:26:06.48
IV.FDMO.HHN. ML:0.6 0.00001160537 0.1792 AML other m 2020-05-28T18:26:05.95
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