Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 28-04-2020 and time 03:30:26 (UTC) in region 5 km W Amatrice (RI)

A magnitude ML 1.4 earthquake occured in region: 5 km W Amatrice (RI), on

  • 28-04-2020 03:30:26 (UTC)
  • 28-04-2020 05:30:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6170, 13.2300 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
Amatrice RI 5 2657 2657
Cittareale RI 6 482 3139
Accumoli RI 9 667 3806
Montereale AQ 10 2581 6387
Capitignano AQ 12 665 7052
Campotosto AQ 13 542 7594
Borbona RI 14 617 8211
Posta RI 15 694 8905
Cagnano Amiterno AQ 18 1369 10274
Arquata del Tronto AP 18 1178 11452
Barete AQ 19 737 12189

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of L'Aquila (69753 inhabitants)
39 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
57 Km SE of Foligno (57155 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
80 Km NE of Guidonia Montecelio (88673 inhabitants)
81 Km NE of Tivoli (56533 inhabitants)
82 Km W of Chieti (51815 inhabitants)
82 Km W of Pescara (121014 inhabitants)
88 Km SE of Perugia (166134 inhabitants)
95 Km E of Viterbo (67173 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 1.4 2020-04-28
03:30:26		 42.6173 13.2298 12 2020-04-28
03:38:51		 Sala Sismica INGV-Roma 78636261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-28 03:30:26 ± 0.08
Latitude 42.6173 ± 0.0036
Longitude 13.2298 ± 0.0061
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 78636261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 539
Semi-minor axis of confidence ellipse (meter) 177
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 78
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.04227
Epicentral distance of station farthest from the epicenter (degree) 0.51891
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 41
Type of magnitude ML
Reference to an origin 78636261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-28 03:38:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GUMA.HHZ. 2020-04-28T03:30:43.16 0.6 undecidable manual S 10 50.1165 92 0.48 42
IV.MF5.EHZ. 2020-04-28T03:30:42.06 0.6 undecidable manual S 24 45.1215 92 0.71 38
IV.FIAM.HHZ. 2020-04-28T03:30:40.18 0.6 undecidable manual S 193 39.8268 93 0.25 46
IV.ARRO.EHZ. 2020-04-28T03:30:39.30 0.6 undecidable manual S 264 38.1285 93 -0.18 45
IV.MC2.EHZ. 2020-04-28T03:30:38.48 0.6 undecidable manual S 354 32.745 94 0.42 44
IV.GIGS.HHZ. 2020-04-28T03:30:38.02 0.3 undecidable manual S 123 33.4443 94 -0.21 69
IV.VCEL.EHZ. 2020-04-28T03:30:37.53 0.6 undecidable manual P 116 55.6998 92 0.69 38
IV.TERO.HHZ. 2020-04-28T03:30:37.04 0.6 undecidable manual S 89 30.5472 94 -0.42 45
IV.MMO1.EHZ. 2020-04-28T03:30:37.67 0.6 undecidable manual S 14 32.2455 94 -0.25 46
IV.MNTT.EHZ. 2020-04-28T03:30:37.86 0.6 positive manual P 31 57.5979 92 0.73 37
IV.GUMA.HHZ. 2020-04-28T03:30:36.18 0.6 negative manual P 10 50.1165 92 0.2 45
IV.CSP1.EHZ. 2020-04-28T03:30:36.84 1.0 undecidable manual P 358 52.7028 92 0.47 21
IV.NRCA.HHZ. 2020-04-28T03:30:35.52 0.6 undecidable manual S 339 25.752 96 -0.67 40
IV.MF5.EHZ. 2020-04-28T03:30:35.51 0.6 positive manual P 24 45.1215 92 0.29 44
IV.CAMP.HHE. 2020-04-28T03:30:34.00 0.6 undecidable manual S 122 17.1717 105 0.06 48
IV.ARRO.EHZ. 2020-04-28T03:30:34.02 0.3 positive manual P 264 38.1285 93 -0.12 68
IV.MTRA.EHZ. 2020-04-28T03:30:34.18 0.6 undecidable manual S 41 20.5683 100 -0.64 43
IV.FIAM.HHZ. 2020-04-28T03:30:34.57 1.0 negative manual P 193 39.8268 93 0.17 23
IV.GIGS.HHZ. 2020-04-28T03:30:33.25 0.1 undecidable manual P 123 33.4443 94 -0.16 93
IV.LNSS.HHZ. 2020-04-28T03:30:33.46 0.6 undecidable manual S 264 15.5733 109 -0.06 48
IV.MC2.EHZ. 2020-04-28T03:30:33.49 1.0 undecidable manual P 354 32.745 94 0.18 23
IV.MMO1.EHZ. 2020-04-28T03:30:33.01 0.6 undecidable manual P 14 32.2455 94 -0.22 46
IV.RM33.EHZ. 2020-04-28T03:30:32.80 0.6 undecidable manual S 186 12.0768 121 0.12 49
IV.TERO.HHZ. 2020-04-28T03:30:32.74 1.0 undecidable manual P 89 30.5472 94 -0.23 23
IV.SMA1.EHZ. 2020-04-28T03:30:31.96 0.6 undecidable manual S 80 8.6802 134 0 50
IV.T1299.HNZ. 2020-04-28T03:30:31.03 0.6 undecidable manual S 66 4.6953 154 -0.29 47
IV.MTRA.EHZ. 2020-04-28T03:30:31.19 0.1 undecidable manual P 41 20.5683 100 -0.25 93
IV.NRCA.HHZ. 2020-04-28T03:30:31.93 0.1 negative manual P 339 25.752 96 -0.31 91
IV.RM33.EHZ. 2020-04-28T03:30:30.35 1.0 undecidable manual P 186 12.0768 121 0.14 24
IV.CAMP.HHE. 2020-04-28T03:30:30.97 0.1 undecidable manual P 122 17.1717 105 0.03 98
IV.LNSS.HHZ. 2020-04-28T03:30:30.74 0.1 positive manual P 264 15.5733 109 0.05 98
IV.SMA1.EHZ. 2020-04-28T03:30:29.95 0.1 positive manual P 80 8.6802 134 0.15 97
IV.T1299.HNZ. 2020-04-28T03:30:29.47 0.1 undecidable manual P 66 4.6953 154 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.6 0.00044883574999999995 0.16 AML other m 2020-04-28T03:30:32.31
IV.SMA1.EHE. ML:2.2 0.0019255935000000001 0.24 AML other m 2020-04-28T03:30:32.21
IV.RM33.EHN. ML:1.4 0.00023904554999999998 0.24 AML other m 2020-04-28T03:30:33.07
IV.RM33.HNE. ML:1.5 0.0003420394 0.1408 AML other m 2020-04-28T03:30:33.22
IV.RM33.EHE. ML:1.5 0.00033442495 0.1392 AML other m 2020-04-28T03:30:33.22
IV.RM33.HNN. ML:1.4 0.00022916225000000002 0.2496 AML other m 2020-04-28T03:30:33.07
IV.LNSS.HNN. ML:1.6 0.00030373499999999996 0.1296 AML other m 2020-04-28T03:30:33.56
IV.LNSS.HNE. ML:1.7 0.00040621675 0.1504 AML other m 2020-04-28T03:30:33.60
IV.LNSS.HHN. ML:1.6 0.00035897845 0.3408 AML other m 2020-04-28T03:30:33.56
IV.LNSS.HHE. ML:1.7 0.00040241505 0.1408 AML other m 2020-04-28T03:30:33.67
IV.MTRA.EHE. ML:1.8 0.00041538524999999997 0.24 AML other m 2020-04-28T03:30:35.13
IV.MTRA.HNN. ML:1.7 0.00036309545 0.12 AML other m 2020-04-28T03:30:34.27
IV.MTRA.EHN. ML:1.7 0.00036845114999999994 0.2208 AML other m 2020-04-28T03:30:34.61
IV.MTRA.HNE. ML:1.8 0.00039103265 0.24 AML other m 2020-04-28T03:30:35.13
IV.NRCA.HHN. ML:1.4 0.00015137834999999998 0.1808 AML other m 2020-04-28T03:30:35.76
IV.NRCA.HHE. ML:1.7 0.00025903199999999997 0.1408 AML other m 2020-04-28T03:30:36.24
IV.NRCA.HNE. ML:1.7 0.00025107 0.1712 AML other m 2020-04-28T03:30:35.79
IV.NRCA.HNN. ML:1.4 0.00013714175 0.44 AML other m 2020-04-28T03:30:34.68
IV.TERO.HNN. ML:1.3 0.000101993815 0.64 AML other m 2020-04-28T03:30:37.10
IV.TERO.HHE. ML:1.2 0.00006310488999999999 0.12 AML other m 2020-04-28T03:30:37.51
IV.TERO.HHN. ML:1.2 0.00008119221 0.0592 AML other m 2020-04-28T03:30:38.13
IV.TERO.HNE. ML:1.2 0.0000767131 0 AML other m 2020-04-28T03:30:37.57
IV.GIGS.HHE. ML:0.8 0.00002410161 0.12 AML other m 2020-04-28T03:30:38.17
IV.GIGS.HHN. ML:1.1 0.00005140198999999999 0.0992 AML other m 2020-04-28T03:30:38.19
IV.ARRO.EHN. ML:0.8 0.00002677713 0.2384 AML other m 2020-04-28T03:30:39.98
IV.ARRO.EHE. ML:0.8 0.00002257886 0.1808 AML other m 2020-04-28T03:30:41.44
IV.FIAM.HHE. ML:0.9 0.00002455849 0.28 AML other m 2020-04-28T03:30:40.63
IV.FIAM.HNN. ML:1.2 0.000055332627500000005 0.4 AML other m 2020-04-28T03:30:41.14
IV.FIAM.HHN. ML:0.8 0.000018987435 0.1808 AML other m 2020-04-28T03:30:41.14
IV.MF5.EHE. ML:1.1 0.000038554485 0.36 AML other m 2020-04-28T03:30:43.24
IV.MF5.EHN. ML:1.1 0.000039497205 0.1808 AML other m 2020-04-28T03:30:43.09
IV.GUMA.HHE. ML:1.8 0.00016046295 0.28 AML other m 2020-04-28T03:30:43.85
IV.GUMA.HNN. ML:1.7 0.0001324163 0.5296 AML other m 2020-04-28T03:30:43.65
IV.GUMA.HHN. ML:1.6 0.00011008847999999999 0.28 AML other m 2020-04-28T03:30:43.95
IV.GUMA.HNE. ML:1.7 0.00012938311 0.3888 AML other m 2020-04-28T03:30:45.18
IV.CSP1.EHE. ML:1.0 0.0000247847125 0.28 AML other m 2020-04-28T03:30:44.70
IV.CSP1.EHN. ML:0.9 0.00002030824 0.0992 AML other m 2020-04-28T03:30:44.96
IV.VCEL.EHE. ML:1.2 0.000038651909999999996 0.2592 AML other m 2020-04-28T03:30:47.41
IV.VCEL.EHN. ML:1.2 0.000034570715 0.1584 AML other m 2020-04-28T03:30:46.15
IV.MNTT.EHN. ML:1.5 0.000066150725 0.48 AML other m 2020-04-28T03:30:50.87
IV.MNTT.EHE. ML:1.3 0.000043089050000000004 0.4208 AML other m 2020-04-28T03:30:49.73
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