Earthquake with magnitude of Md 2.4 on date 05-04-1988 and time 04:58:46 (Italy) in region 3 km SW Amatrice (RI)

A magnitude Md 2.4 earthquake occured in region: 3 km SW Amatrice (RI), on

  • 05-04-1988 02:58:46 (UTC)
  • 05-04-1988 04:58:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.61, 13.26 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
Amatrice RI 3 2657 2657
Cittareale RI 8 482 3139
Montereale AQ 10 2581 5720
Accumoli RI 10 667 6387
Capitignano AQ 10 665 7052
Campotosto AQ 11 542 7594
Borbona RI 15 617 8211
Posta RI 17 694 8905
Cagnano Amiterno AQ 17 1369 10274
Barete AQ 18 737 11011
Arquata del Tronto AP 18 1178 12189
Crognaleto TE 19 1297 13486
Pizzoli AQ 19 4326 17812

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of L'Aquila (69753 inhabitants)
37 Km W of Teramo (54892 inhabitants)
51 Km E of Terni (111501 inhabitants)
60 Km SE of Foligno (57155 inhabitants)
73 Km W of Montesilvano (53738 inhabitants)
80 Km W of Chieti (51815 inhabitants)
80 Km W of Pescara (121014 inhabitants)
81 Km NE of Guidonia Montecelio (88673 inhabitants)
81 Km NE of Tivoli (56533 inhabitants)
90 Km SE of Perugia (166134 inhabitants)
97 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
Rev 1000 Md 2.4
ML-VAX 1.6
1988-04-05
02:58:46
42.61 13.26 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 65739
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-04-05 02:58:46 ± 0.145
Latitude 42.61 ± 0.01
Longitude 13.26 ± 0.01
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 65739

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) 1293
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 102
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
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) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.00882
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 65739
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:02:19

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 65739
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
--.AM8.Z. 1988-04-05T02:59:21.91 10.0 undecidable manual SG 14 0.0087 1.54 0
--.SDI.Z. 1988-04-05T02:59:20.95 10.0 undecidable manual SG 155 0.0088 0.01 0.5
--.ARV.Z. 1988-04-05T02:59:19.18 10.0 undecidable manual SG 345 0.0083 0.47 0.4
--.ASS.Z. 1988-04-05T02:59:09.94 10.0 undecidable manual SG 315 0.0057 0.29 0.6
--.CM8.Z. 1988-04-05T02:59:07.88 10.0 undecidable manual SG 351 0.0053 -0.32 0.8
--.SDI.Z. 1988-04-05T02:59:06.50 10.0 undecidable manual PG 155 0.0088 -0.28 1.1
--.AM8.Z. 1988-04-05T02:59:06.67 10.0 undecidable manual PG 14 0.0087 0.67 0.6
--.MNS.Z. 1988-04-05T02:59:05.33 10.0 undecidable manual SG 242 0.0043 0.54 0.4
--.ARV.Z. 1988-04-05T02:59:05.59 10.0 undecidable manual PG 345 0.0083 0.55 0.8
--.SS8.Z. 1988-04-05T02:59:01.90 10.0 undecidable manual SG 356 0.0036 0.14 0.9
--.ASS.Z. 1988-04-05T02:59:00.20 10.0 undecidable manual PG 315 0.0057 0.21 1.5
--.ALP.Z. 1988-04-05T02:58:57.16 10.0 undecidable manual SG 52 0.0025 -0.16 0.9
--.MNS.Z. 1988-04-05T02:58:57.00 10.0 undecidable manual PG 242 0.0043 0 1.6
--.AQU.Z. 1988-04-05T02:58:57.00 10.0 undecidable manual SG 158 0.0024 -0.13 0.6
--.CM8.Z. 1988-04-05T02:58:57.94 10.0 negative manual PG 351 0.0053 -1.03 0.6
--.SS8.Z. 1988-04-05T02:58:54.91 10.0 negative manual PG 356 0.0036 -0.35 2.7
--.AQU.Z. 1988-04-05T02:58:53.80 10.0 undecidable manual PG 158 0.0024 0.5 1.1
--.ALP.Z. 1988-04-05T02:58:52.42 10.0 positive manual PG 52 0.0025 -0.27 2.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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