Earthquake with magnitude of Md 3.3 on date 20-10-1996 and time 18:52:13 (Italy) in region 4 km NE Posta (RI)

A magnitude Md 3.3 earthquake occured in region: 4 km NE Posta (RI), on

  • 20-10-1996 16:52:13 (UTC)
  • 20-10-1996 18:52:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.55, 13.13 at 5 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
Posta RI 4 694 694
Borbona RI 4 617 1311
Cittareale RI 8 482 1793
Montereale AQ 10 2581 4374
Micigliano RI 12 127 4501
Cagnano Amiterno AQ 13 1369 5870
Leonessa RI 14 2435 8305
Capitignano AQ 14 665 8970
Antrodoco RI 15 2588 11558
Amatrice RI 16 2657 14215
Barete AQ 16 737 14952
Borgo Velino RI 17 972 15924
Pizzoli AQ 18 4326 20250
Monteleone di Spoleto PG 19 599 20849
Castel Sant'Angelo RI 19 1308 22157
Accumoli RI 19 667 22824
Campotosto AQ 20 542 23366

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of L'Aquila (69753 inhabitants)
40 Km E of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
57 Km SE of Foligno (57155 inhabitants)
69 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km NE of Tivoli (56533 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
85 Km E of Viterbo (67173 inhabitants)
87 Km SE of Perugia (166134 inhabitants)
88 Km W of Chieti (51815 inhabitants)
89 Km W of Pescara (121014 inhabitants)
90 Km NE of Roma (2864731 inhabitants)
100 Km N 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
Rev 1000 Md 3.3
ML-VAX 2.6
1996-10-20
16:52:13
42.55 13.13 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 255009
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1996-10-20 16:52:13 ± 0.153
Latitude 42.55 ± 0.01
Longitude 13.13 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 255009

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) 2106.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.0395
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

Md:3.3

Field Value
Value 3.3
Uncertainty
Num. used stations 7
Type of magnitude Md
Reference to an origin 255009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:01:17

ML:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 255009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BR9.Z. 1996-10-20T16:54:10.14 10.0 undecidable manual SN 334 0.0395 0.49 0.4
--.CTI.Z. 1996-10-20T16:53:51.22 10.0 undecidable manual SN 343 0.0329 -0.94 0.3
--.BDI.Z. 1996-10-20T16:53:21.74 10.0 undecidable manual SN 310 0.0215 -0.23 0.6
--.BR9.Z. 1996-10-20T16:53:21.45 10.0 undecidable manual PN 334 0.0395 0.93 0.6
--.CTI.Z. 1996-10-20T16:53:09.59 10.0 undecidable manual PN 343 0.0329 -0.83 0.7
--.BOB.Z. 1996-10-20T16:53:08.30 10.0 undecidable manual PN 311 0.0312 0.47 1.1
--.FG2.Z. 1996-10-20T16:53:04.55 10.0 undecidable manual SN 115 0.0151 -0.57 0.6
--.RSM.Z. 1996-10-20T16:53:00.82 10.0 undecidable manual SN 340 0.0132 0.7 0.5
--.MU9.Z. 1996-10-20T16:52:54.95 10.0 undecidable manual PN 134 0.0225 0.28 1.5
--.BDI.Z. 1996-10-20T16:52:54.40 10.0 undecidable manual PN 310 0.0215 1.05 0.7
--.ZC9.Z. 1996-10-20T16:52:54.20 10.0 undecidable manual PN 320 0.0215 1.2 0.6
--.FB9.Z. 1996-10-20T16:52:52.64 10.0 undecidable manual SN 347 0.0105 -0.49 0.6
--.PII.Z. 1996-10-20T16:52:51.30 10.0 undecidable manual PN 302 0.0201 0.38 1.5
--.PSB1.Z. 1996-10-20T16:52:46.82 10.0 undecidable manual PN 136 0.0164 1.58 0.3
--.ARV.Z. 1996-10-20T16:52:46.14 10.0 undecidable manual SG 352 0.0086 -0.97 0.4
--.PGD.Z. 1996-10-20T16:52:43.29 10.0 undecidable manual PN 322 0.0151 0.01 1.9
--.SFI.Z. 1996-10-20T16:52:43.31 10.0 undecidable manual PN 326 0.0148 0.45 1.7
--.RMP.Z. 1996-10-20T16:52:42.58 10.0 undecidable manual SG 203 0.0072 0.56 0.6
--.FG2.Z. 1996-10-20T16:52:42.70 10.0 undecidable manual PN 115 0.0151 -0.56 1.5
--.RSM.Z. 1996-10-20T16:52:41.15 10.0 undecidable manual PN 340 0.0132 0.77 1.2
--.RFI.Z. 1996-10-20T16:52:40.10 10.0 undecidable manual PN 152 0.0125 0.56 1.5
--.FB9.Z. 1996-10-20T16:52:34.66 10.0 undecidable manual PN 347 0.0105 -1.68 0.2
--.SDI.Z. 1996-10-20T16:52:32.89 10.0 undecidable manual PG 148 0.0087 -0.29 1.8
--.ARV.Z. 1996-10-20T16:52:32.74 10.0 undecidable manual PG 352 0.0086 -0.13 1.9
--.PQ9.Z. 1996-10-20T16:52:31.87 10.0 undecidable manual SG! 159 0.005 -2.45 0
--.RMP.Z. 1996-10-20T16:52:29.49 10.0 undecidable manual PG 203 0.0072 -0.44 1.7
--.MNS.Z. 1996-10-20T16:52:26.27 10.0 undecidable manual SG 244 0.0033 -1.5 0.1
--.ASS.Z. 1996-10-20T16:52:25.29 10.0 undecidable manual PG 326 0.0056 -1.32 0.5
--.PQ9.Z. 1996-10-20T16:52:24.50 10.0 undecidable manual PG 159 0.005 -0.98 0.9
--.MNS.Z. 1996-10-20T16:52:21.65 10.0 undecidable manual PG 244 0.0033 -0.05 1.9
--.AQU.Z. 1996-10-20T16:52:19.45 10.0 undecidable manual PG 134 0.0024 -0.23 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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