Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 21-07-2019 and time 10:00:30 (UTC) in region 4 km NE Pizzoli (AQ)

A magnitude ML 0.9 earthquake occured in region: 4 km NE Pizzoli (AQ), on

  • 21-07-2019 10:00:30 (UTC)
  • 21-07-2019 12:00:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4550, 13.3350 at 13 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
Pizzoli AQ 4 4326 4326
Barete AQ 4 737 5063
Capitignano AQ 8 665 5728
Cagnano Amiterno AQ 9 1369 7097
Montereale AQ 11 2581 9678
Scoppito AQ 11 3727 13405
Campotosto AQ 12 542 13947
L'Aquila AQ 13 69753 83700
Crognaleto TE 16 1297 84997
Borbona RI 18 617 85614
Lucoli AQ 18 1011 86625
Tornimparte AQ 18 3187 89812
Pietracamela TE 20 271 90083
Amatrice RI 20 2657 92740
Fano Adriano TE 20 296 93036

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km NW of L'Aquila (69753 inhabitants)
38 Km SW of Teramo (54892 inhabitants)
58 Km E of Terni (111501 inhabitants)
67 Km W of Montesilvano (53738 inhabitants)
69 Km W of Chieti (51815 inhabitants)
70 Km NE of Tivoli (56533 inhabitants)
71 Km NE of Guidonia Montecelio (88673 inhabitants)
72 Km W of Pescara (121014 inhabitants)
76 Km SE of Foligno (57155 inhabitants)
94 Km NE of Roma (2864731 inhabitants)
97 Km NE of Velletri (53303 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 0.9 2019-07-21
10:00:30		 42.4552 13.3347 13 2019-11-13
14:31:03		 Bollettino Sismico Italiano INGV 72823661
Reviewed
Rev100 		ML 0.9 2019-07-21
10:00:31		 42.4707 13.35 11 2019-07-21
10:16:41		 Sala Sismica INGV-Roma 70765471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-21 10:00:30 ± 0.12
Latitude 42.4552 ± 0.0045
Longitude 13.3347 ± 0.0061
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 72823661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 579
Semi-minor axis of confidence ellipse (meter) 214
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 45
Circular confidence region, given by single value of horizontal uncertainty (meter) 580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 148
Number of associated phases, regardless of their use for origin computation 32
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) 0.41099
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 70765471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-21 10:16:41

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 72823661
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-27 12:05:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CET2.HHZ. 2019-07-21T10:02:16.10 3.0 undecidable manual Sn -0.17 0
IV.VARE.HHZ. 2019-07-21T10:02:06.81 3.0 undecidable manual Sn -6.2 0
IV.NDIM.HNZ. 2019-07-21T10:01:36.61 3.0 undecidable manual Sg 4.5 0
IV.MRB1.HHZ. 2019-07-21T10:01:36.70 3.0 undecidable manual Sn 1.59 0
IV.CET2.HHZ. 2019-07-21T10:01:27.74 3.0 undecidable manual Pn 2.29 0
IV.VARE.HHZ. 2019-07-21T10:01:26.74 3.0 undecidable manual Pn 3.12 0
OX.DRE.HHZ. 2019-07-21T10:01:25.45 3.0 undecidable manual Pg 9.47 0
GU.CARD.HHZ. 2019-07-21T10:01:14.76 3.0 undecidable manual Sn -5.37 0
IV.PZUN.HHZ. 2019-07-21T10:01:11.07 3.0 negative manual Pn -2.13 0
GU.GORR.HHZ. 2019-07-21T10:01:08.60 3.0 undecidable manual Pn 0.56 0
IV.NDIM.HNZ. 2019-07-21T10:01:01.35 3.0 positive manual Pg 0.71 0
IV.MNTT.EHZ. 2019-07-21T10:00:53.08 3.0 undecidable manual S -0.68 0
IV.NRCA.HHZ. 2019-07-21T10:00:45.41 0.3 undecidable manual S 337 45.621 94 -0.01 70
IV.MTRA.EHZ. 2019-07-21T10:00:41.83 0.6 undecidable manual S 9 33.8439 96 -0.44 43
IV.LNSS.HHE. 2019-07-21T10:00:41.32 0.6 undecidable manual S 304 29.1486 98 0.3 46
IV.T1299.HNN. 2019-07-21T10:00:39.03 0.6 undecidable manual S 348 20.3685 106 0.31 47
IV.NRCA.HHZ. 2019-07-21T10:00:39.05 0.1 undecidable manual P 337 45.621 94 -0.17 91
IV.GIGS.HHZ. 2019-07-21T10:00:38.48 0.6 undecidable manual S 91 19.4694 107 -0.03 49
IV.SMA1.EHZ. 2019-07-21T10:00:38.77 0.6 undecidable manual S 0 19.4694 107 0.27 47
IV.MTRA.EHZ. 2019-07-21T10:00:37.18 0.1 undecidable manual P 9 33.8439 96 -0.22 92
MN.AQU.HNN. 2019-07-21T10:00:36.77 0.6 undecidable manual S 153 12.5763 124 -0.07 49
IV.RM33.EHZ. 2019-07-21T10:00:36.23 0.6 undecidable manual S 301 11.4774 127 -0.37 46
IV.LNSS.HHE. 2019-07-21T10:00:36.72 0.3 undecidable manual P 304 29.1486 98 0.04 72
IV.CRE.HHZ. 2019-07-21T10:00:36.66 3.0 undecidable manual P -2.76 0
IV.CAMP.HHE. 2019-07-21T10:00:36.49 0.6 undecidable manual S 34 10.7781 130 0.03 50
IV.SMA1.EHZ. 2019-07-21T10:00:35.28 0.1 undecidable manual P 0 19.4694 107 0.06 98
IV.T1299.HNN. 2019-07-21T10:00:35.44 0.1 undecidable manual P 348 20.3685 106 0.09 97
IV.GIGS.HHZ. 2019-07-21T10:00:35.22 0.1 undecidable manual P 91 19.4694 107 -0.01 98
IV.CAMP.HHE. 2019-07-21T10:00:34.23 0.1 undecidable manual P 34 10.7781 130 0.19 97
MN.AQU.HNN. 2019-07-21T10:00:34.32 0.3 undecidable manual P 153 12.5763 124 0.05 74
IV.RM33.EHZ. 2019-07-21T10:00:34.12 0.1 positive manual P 301 11.4774 127 0 100
TV.SF04.EHZ. 2019-07-21T10:00:30.60 3.0 undecidable manual P -2.5 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:0.8 0.00006314314 0.096 AML other m 2019-07-21T10:00:36.62
IV.RM33.EHE. ML:0.7 0.000046115320000000004 1.8592 AML other m 2019-07-21T10:00:36.98
IV.GIGS.HHN. ML:0.5 0.000018560424999999998 1.8784 AML other m 2019-07-21T10:00:38.04
IV.GIGS.HHE. ML:0.2 0.000009543814500000001 1.84 AML other m 2019-07-21T10:00:39.98
IV.SMA1.EHN. ML:1.1 0.000082252625 0.2368 AML other m 2019-07-21T10:00:39.22
IV.SMA1.EHE. ML:1.4 0.00018129215 0.3776 AML other m 2019-07-21T10:00:39.26
IV.NRCA.HHN. ML:1.1 0.000033909535 0.1024 AML other m 2019-07-21T10:00:45.73
IV.NRCA.HHE. ML:1.3 0.000057735105 0.1024 AML other m 2019-07-21T10:00:46.80
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