Earthquake with magnitude of Md 3.0 on date 24-07-1985 and time 19:06:49 (UTC) in region 4 km SE Amatrice (RI)

A magnitude Md 3.0 earthquake occured in region: 4 km SE Amatrice (RI), on

  • 24-07-1985 19:06:49 (UTC)
  • 24-07-1985 21:06:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6, 13.31 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.

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 4 2657 2657
Campotosto AQ 7 542 3199
Capitignano AQ 8 665 3864
Montereale AQ 9 2581 6445
Accumoli RI 12 667 7112
Cittareale RI 12 482 7594
Crognaleto TE 15 1297 8891
Barete AQ 16 737 9628
Cagnano Amiterno AQ 17 1369 10997
Cortino TE 17 656 11653
Borbona RI 17 617 12270
Pizzoli AQ 18 4326 16596
Posta RI 19 694 17290
Fano Adriano TE 19 296 17586
Arquata del Tronto AP 20 1178 18764

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km N of L'Aquila (69753 inhabitants)
33 Km W of Teramo (54892 inhabitants)
54 Km E of Terni (111501 inhabitants)
64 Km SE of Foligno (57155 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
76 Km W of Chieti (51815 inhabitants)
76 Km W of Pescara (121014 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
94 Km SE of Perugia (166134 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
Rev 1000 Md 3.0 1985-07-24
19:06:49
42.6 13.31 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 10829
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-07-24 19:06:49 ± 0.644
Latitude 42.60 ± 0.01
Longitude 13.31 ± 0.02
Depth (km) 9 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 10829

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 1780.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00219
Epicentral distance of station farthest from the epicenter (degree) 0.01287
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 10829
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:14:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AM1.Z. 1985-07-24T19:07:24.80 10.0 undecidable manual SG 12 0.0087 1.72 0
--.CH1.Z. 1985-07-24T19:07:15.40 10.0 undecidable manual PN 316 0.0129 -0.05 0.9
--.AS1.Z. 1985-07-24T19:07:13.00 10.0 undecidable manual SG 314 0.006 -0.19 0.8
--.CM2.Z. 1985-07-24T19:07:11.20 10.0 undecidable manual SG 348 0.0054 -0.02 0.9
--.AR1.Z. 1985-07-24T19:07:09.00 10.0 undecidable manual PG 343 0.0084 0.74 0.5
--.SD1.Z. 1985-07-24T19:07:08.20 10.0 undecidable manual PG 157 0.0086 -0.44 0.8
--.AM1.Z. 1985-07-24T19:07:08.90 10.0 undecidable manual PG 12 0.0087 -0.05 1.1
--.MNS.Z. 1985-07-24T19:07:07.50 10.0 undecidable manual SG 245 0.0045 -0.52 0.6
--.AS1.Z. 1985-07-24T19:07:02.50 10.0 undecidable manual PG 314 0.006 -0.73 0.6
--.CM2.Z. 1985-07-24T19:07:01.60 10.0 positive manual PG 348 0.0054 -0.5 2
--.MNS.Z. 1985-07-24T19:07:00.10 10.0 positive manual PG 245 0.0045 -0.15 2.8
--.AQU.Z. 1985-07-24T19:07:00.00 10.0 undecidable manual SG 164 0.0022 0.22 0.5
--.ALP.Z. 1985-07-24T19:06:59.20 10.0 undecidable manual SG 46 0.0023 -0.98 0.2
--.PO9.Z. 1985-07-24T19:06:59.80 10.0 undecidable manual SG 265 0.0024 -0.59 0.3
--.AQU.Z. 1985-07-24T19:06:56.00 10.0 undecidable manual PG 164 0.0022 0.51 1
--.PO9.Z. 1985-07-24T19:06:56.50 10.0 positive manual PG 265 0.0024 0.66 1.5
--.ALP.Z. 1985-07-24T19:06:55.50 10.0 positive manual PG 46 0.0023 -0.23 2.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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