Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 28-09-2019 and time 22:08:36 (Italy) in region 3 km N Accumoli (RI)

A magnitude ML 0.7 earthquake occured in region: 3 km N Accumoli (RI), on

  • 28-09-2019 20:08:36 (UTC)
  • 28-09-2019 22:08:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7250, 13.2390 at 14 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Accumoli RI 3 667 667
Arquata del Tronto AP 7 1178 1845
Amatrice RI 11 2657 4502
Cittareale RI 14 482 4984
Norcia PG 14 4957 9941
Acquasanta Terme AP 15 2916 12857
Montegallo AP 15 523 13380
Cascia PG 18 3217 16597

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
44 Km NW of L'Aquila (69753 inhabitants)
51 Km SE of Foligno (57155 inhabitants)
52 Km E of Terni (111501 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
85 Km W of Pescara (121014 inhabitants)
87 Km W of Chieti (51815 inhabitants)
91 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km NE of Tivoli (56533 inhabitants)
99 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
Bulletin
Rev1000 		ML 0.7 2019-09-28
20:08:36		 42.7253 13.2392 14 2020-02-28
16:42:14		 Bollettino Sismico Italiano INGV 74713331
Reviewed
Rev100 		ML 0.8 2019-09-28
20:08:36		 42.7278 13.241 13 2019-09-28
20:22:27		 Sala Sismica INGV-Roma 72864271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-28 20:08:36 ± 0.07
Latitude 42.7253 ± 0.0018
Longitude 13.2392 ± 0.0061
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 74713331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 401
Semi-minor axis of confidence ellipse (meter) 347
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37772
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 74713331
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-12-16 16:34:39

ML:0.8

Field Value
Value 0.8
Uncertainty 0.4
Num. used stations 16
Type of magnitude ML
Reference to an origin 72864271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-28 20:22:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MPNC.HHZ. 2019-09-28T20:10:20.60 3.0 undecidable manual Sn 0.66 0
IV.IMI.HHZ. 2019-09-28T20:10:17.07 3.0 undecidable manual Sn 0.8 0
IV.MBAL.EHZ. 2019-09-28T20:10:07.29 3.0 undecidable manual Sn -0.4 0
IV.HPAC.HHZ. 2019-09-28T20:10:01.71 3.0 negative manual Pg 14.32 0
IV.LINA.HHZ. 2019-09-28T20:10:01.04 3.0 undecidable manual Pn 4.74 0
OX.VARN.HHZ. 2019-09-28T20:10:00.79 3.0 undecidable manual Sn -6.78 0
IV.MNTV.HNZ. 2019-09-28T20:09:48.85 3.0 undecidable manual Sn -7.79 0
IV.MFNL.HHZ. 2019-09-28T20:09:43.41 3.0 undecidable manual Pg 13.29 0
IV.PZUN.HHZ. 2019-09-28T20:09:36.30 3.0 undecidable manual Sn 1.23 0
IV.MBAL.EHZ. 2019-09-28T20:09:31.00 3.0 positive manual Pg 8.11 0
RF.GEPF.HHZ. 2019-09-28T20:09:31.08 3.0 positive manual Pg 5.45 0
IV.SPS2.HHZ. 2019-09-28T20:09:28.03 3.0 undecidable manual Pg 6.5 0
GU.CANO.HHZ. 2019-09-28T20:09:22.42 3.0 undecidable manual Pn -3.91 0
IV.CPGN.EHZ. 2019-09-28T20:09:18.13 3.0 undecidable manual Sn 1.97 0
IV.SERM.HNZ. 2019-09-28T20:09:12.05 3.0 positive manual Pn -0.63 0
IV.VVLD.HHZ. 2019-09-28T20:08:52.08 3.0 undecidable manual Sn 1.5 0
IV.CSP1.EHZ. 2019-09-28T20:08:49.35 0.6 undecidable manual S 356 40.7259 97 -0.16 47
IT.MTCL.HGE. 2019-09-28T20:08:48.07 0.6 undecidable manual S 327 35.6421 98 -0.08 48
IV.FDMO.HHZ. 2019-09-28T20:08:48.54 0.3 undecidable manual S 340 36.6411 98 0.11 71
IV.RM33.EHZ. 2019-09-28T20:08:45.13 0.3 undecidable manual S 185 24.0537 105 0 74
IV.CAMP.HHE. 2019-09-28T20:08:45.10 0.3 undecidable manual S 147 25.1526 104 -0.31 69
IV.MC2.EHZ. 2019-09-28T20:08:44.50 0.3 undecidable manual S 349 21.0678 109 0.14 72
IV.MMO1.EHZ. 2019-09-28T20:08:44.21 0.6 undecidable manual S 20 20.5683 110 -0.03 50
IT.VNF1.HGZ. 2019-09-28T20:08:44.68 3.0 positive manual P 0.03 0
IV.LNSS.HHE. 2019-09-28T20:08:44.43 0.6 undecidable manual S 230 21.1677 109 0.05 49
IV.ARRO.EHZ. 2019-09-28T20:08:43.77 0.6 undecidable manual P 247 41.9247 96 -0.25 46
IV.FDMO.HHZ. 2019-09-28T20:08:43.30 1.0 positive manual P 340 36.6411 98 0.07 24
IV.CSP1.EHZ. 2019-09-28T20:08:43.91 0.1 undecidable manual P 356 40.7259 97 0.05 95
IT.MTCL.HGE. 2019-09-28T20:08:43.02 0.1 undecidable manual P 327 35.6421 98 -0.04 97
IV.NRCA.HHZ. 2019-09-28T20:08:42.66 0.3 undecidable manual S 320 15.7731 119 -0.4 70
IV.SMA1.EHZ. 2019-09-28T20:08:42.16 0.3 undecidable manual S 143 13.0758 126 -0.31 71
IV.T1299.EHE. 2019-09-28T20:08:41.97 0.3 undecidable manual S 161 10.6782 134 -0.01 76
IV.LNSS.HHE. 2019-09-28T20:08:41.03 0.1 undecidable manual P 230 21.1677 109 0.14 97
IV.MC2.EHZ. 2019-09-28T20:08:41.03 0.3 undecidable manual P 349 21.0678 109 0.15 72
IV.RM33.EHZ. 2019-09-28T20:08:41.38 0.3 undecidable manual P 185 24.0537 105 0.06 74
IV.CAMP.HHE. 2019-09-28T20:08:41.50 0.1 undecidable manual P 147 25.1526 104 0.01 99
IV.MTRA.EHZ. 2019-09-28T20:08:40.14 0.3 undecidable manual P 75 13.2756 126 0.33 71
IV.NRCA.HHZ. 2019-09-28T20:08:40.13 0.1 undecidable manual P 320 15.7731 119 0 100
IV.MMO1.EHZ. 2019-09-28T20:08:40.72 0.3 undecidable manual P 20 20.5683 110 -0.09 73
IV.T1299.EHE. 2019-09-28T20:08:39.69 0.1 undecidable manual P 161 10.6782 134 0.18 98
IV.SMA1.EHZ. 2019-09-28T20:08:39.87 0.1 undecidable manual P 143 13.0758 126 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0.7 0.00004601813 0.2176 AML other m 2019-09-28T20:08:42.51
IV.SMA1.EHN. ML:0.7 0.00003965183 0.1024 AML other m 2019-09-28T20:08:42.57
IV.CSP1.EHE. ML:0.8 0.000021360425500000003 0.9984 AML other m 2019-09-28T20:08:46.75
IV.FDMO.HHN. ML:0.4 0.0000100341445 0.2048 AML other m 2019-09-28T20:08:49.68
IV.FDMO.HHE. ML:0.1 0.000007072782499999999 0.1536 AML other m 2019-09-28T20:08:50.36
IV.ARRO.EHE. ML:0.7 0.000016869330000000003 0.2048 AML other m 2019-09-28T20:09:05.47
IV.ARRO.EHN. ML:0.8 0.000019019765 0.1792 AML other m 2019-09-28T20:09:05.57
IV.CSP1.EHN. ML:0.8 0.00002205686 0.0608 AML other m 2019-09-28T20:09:09.62
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