Earthquake with magnitude of Md 4.5 on date 11-04-2003 and time 11:26:57 (Italy) in region 1 km SE Cassano Spinola (AL)

A magnitude Md 4.5 earthquake occured in region: 1 km SE Cassano Spinola (AL), on

  • 11-04-2003 09:26:57 (UTC)
  • 11-04-2003 11:26:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.76, 8.87 at 8 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
Cassano Spinola AL 1 1731 1731
Gavazzana AL 3 180 1911
Sardigliano AL 3 406 2317
Stazzano AL 3 2486 4803
Serravalle Scrivia AL 4 6128 10931
Sant'Agata Fossili AL 5 425 11356
Vignole Borbera AL 6 2182 13538
Carezzano AL 6 431 13969
Novi Ligure AL 6 28154 42123
Castellania AL 7 90 42213
Borghetto di Borbera AL 7 1966 44179
Villalvernia AL 7 955 45134
Paderna AL 7 220 45354
Pozzolo Formigaro AL 8 4775 50129
Arquata Scrivia AL 8 6409 56538
Costa Vescovato AL 8 335 56873
Tassarolo AL 8 672 57545
Spineto Scrivia AL 9 337 57882
Gavi AL 9 4614 62496
Avolasca AL 9 294 62790
Pasturana AL 9 1318 64108
Grondona AL 10 510 64618
Carbonara Scrivia AL 10 1122 65740
Villaromagnano AL 11 715 66455
Cerreto Grue AL 11 323 66778
Garbagna AL 11 696 67474
Francavilla Bisio AL 11 531 68005
Carrosio AL 11 510 68515
Montegioco AL 11 313 68828
San Cristoforo AL 12 608 69436
Basaluzzo AL 13 2087 71523
Parodi Ligure AL 13 715 72238
Sarezzano AL 13 1171 73409
Bosio AL 14 1227 74636
Casasco AL 14 129 74765
Isola del Cantone GE 14 1540 76305
Montemarzino AL 14 341 76646
Capriata d'Orba AL 14 1904 78550
Dernice AL 15 185 78735
Cantalupo Ligure AL 15 527 79262
Montaldeo AL 15 265 79527
Fresonara AL 15 731 80258
Berzano di Tortona AL 15 157 80415
Brignano-Frascata AL 15 456 80871
Castelletto d'Orba AL 15 2047 82918
Voltaggio AL 15 738 83656
Tortona AL 15 27437 111093
Rocchetta Ligure AL 16 200 111293
Roccaforte Ligure AL 16 136 111429
Mornese AL 16 737 112166
Momperone AL 16 223 112389
San Sebastiano Curone AL 16 583 112972
Predosa AL 16 2048 115020
Bosco Marengo AL 17 2457 117477
Volpeglino AL 17 148 117625
Viguzzolo AL 17 3148 120773
Monleale AL 17 566 121339
Albera Ligure AL 17 325 121664
Volpedo AL 17 1227 122891
Casaleggio Boiro AL 17 372 123263
Frugarolo AL 17 1968 125231
Silvano d'Orba AL 17 1988 127219
Castellar Guidobono AL 18 399 127618
Ronco Scrivia GE 18 4417 132035
Lerma AL 18 869 132904
Fraconalto AL 18 336 133240
Pozzol Groppo AL 19 328 133568
Montacuto AL 19 278 133846
Gremiasco AL 19 324 134170
Casalnoceto AL 20 980 135150
Cecima PV 20 236 135386
Rocca Grimalda AL 20 1512 136898

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km SE of Alessandria (93943 inhabitants)
39 Km N of Genova (586655 inhabitants)
53 Km SW of Pavia (72576 inhabitants)
55 Km E of Asti (76202 inhabitants)
59 Km NE of Savona (61345 inhabitants)
62 Km S of Vigevano (63310 inhabitants)
73 Km W of Piacenza (102191 inhabitants)
79 Km S of Novara (104380 inhabitants)
83 Km SW of Milano (1345851 inhabitants)
87 Km S of Rho (50434 inhabitants)
91 Km SW of Sesto San Giovanni (81608 inhabitants)
93 Km S of Legnano (60262 inhabitants)
93 Km SW of Cinisello Balsamo (75078 inhabitants)
95 Km S of Busto Arsizio (83106 inhabitants)
97 Km E of Moncalieri (57294 inhabitants)
97 Km SW of Monza (122671 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 4.5
ML-MEDNET 4.7
2003-04-11
09:26:57
44.76 8.87 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 474899
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2003-04-11 09:26:57 ± 0.766
Latitude 44.76 ± 0.01
Longitude 8.87 ± 0.01
Depth (km) 8 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 474899

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) 1492.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00283
Epicentral distance of station farthest from the epicenter (degree) 0.05197
Number of stations at which the event was observed 41
Number of stations from which data was used for origin computation 41
Magnitudes information

Md:4.5

Field Value
Value 4.5
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 474899
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:31:21

ML:4.7

Field Value
Value 4.7
Uncertainty
Num. used stations
Type of magnitude ML
Reference to an origin 474899
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 10:38:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.RGNG.Z. 2003-04-11T09:28:24.53 10.0 undecidable manual PN 119 0.052 1.04 0
--.SDI.Z. 2003-04-11T09:28:08.62 10.0 undecidable manual PN 128 0.0424 -0.23 0
--.PTQR.Z. 2003-04-11T09:28:04.47 10.0 undecidable manual PN 127 0.0384 1.61 0
--.MNS.Z. 2003-04-11T09:27:54.57 10.0 negative manual PN 129 0.0327 0.48 0
--.TRI.Z. 2003-04-11T09:27:53.40 10.0 positive manual PN 72 0.0321 0.21 0
--.PTCC.Z. 2003-04-11T09:27:53.53 10.0 positive manual PN 60 0.0318 0.78 0
--.GMNA.Z. 2003-04-11T09:27:51.20 10.0 positive manual PN 61 0.0302 0.85 0
--.FVI.Z. 2003-04-11T09:27:50.79 10.0 positive manual PN 54 0.0295 1.49 0
--.ARV.Z. 2003-04-11T09:27:48.64 10.0 undecidable manual PN 111 0.0286 0.83 0
--.ASS.Z. 2003-04-11T09:27:47.69 10.0 undecidable manual PN 120 0.0288 -0.47 0
--.FSSB.Z. 2003-04-11T09:27:46.61 10.0 undecidable manual PN 109 0.027 1.37 0
--.CRE.Z. 2003-04-11T09:27:38.25 10.0 undecidable manual PN 115 0.0223 0.02 0.2
--.CTI.Z. 2003-04-11T09:27:37.30 10.0 undecidable manual PN 55 0.021 0.8 0.4
--.SFI.Z. 2003-04-11T09:27:35.93 10.0 undecidable manual PN 110 0.0206 0.31 0.4
--.PGD.Z. 2003-04-11T09:27:34.38 10.0 undecidable manual PN 112 0.02 -0.25 0.5
--.BRMO.Z. 2003-04-11T09:27:33.47 10.0 undecidable manual PN 30 0.0181 1.71 0.8
--.CSNT.Z. 2003-04-11T09:27:33.48 10.0 undecidable manual PN 125 0.0194 -0.32 0.6
--.GRFL.Z. 2003-04-11T09:27:33.89 10.0 undecidable manual PN 135 0.0198 -0.59 0.5
--.VMG.Z. 2003-04-11T09:27:32.55 10.0 undecidable manual PN 111 0.0186 0 0.7
--.SEI.Z. 2003-04-11T09:27:31.70 10.0 undecidable manual PN 110 0.0172 0.7 0.9
--.BNI.Z. 2003-04-11T09:27:26.64 10.0 undecidable manual PN 281 0.0142 0.87 1.3
--.RRL.Z. 2003-04-11T09:27:25.25 10.0 undecidable manual PN 276 0.0134 0.73 1.4
--.PII.Z. 2003-04-11T09:27:25.60 10.0 negative manual PN 130 0.0142 -0.68 1.3
--.LSD.Z. 2003-04-11T09:27:23.25 10.0 undecidable manual PN 300 0.0125 -0.03 1.5
--.BDI.Z. 2003-04-11T09:27:23.40 10.0 negative manual PN 118 0.0127 -0.17 1.4
--.GSCL.Z. 2003-04-11T09:27:22.30 10.0 positive manual PN 107 0.0116 0.46 1.6
--.PZZ.Z. 2003-04-11T09:27:21.77 10.0 undecidable manual PN 259 0.0115 0.05 1.6
--.MCGN.Z. 2003-04-11T09:27:21.73 10.0 negative manual PN 332 0.0121 -0.9 1.5
--.ENR.Z. 2003-04-11T09:27:20.10 10.0 undecidable manual PN 243 0.0104 0.05 1.8
--.RSP.Z. 2003-04-11T09:27:20.40 10.0 undecidable manual PN 289 0.0108 -0.63 1.7
--.DOI.Z. 2003-04-11T09:27:20.74 10.0 positive manual PN 257 0.0106 0.4 1.7
--.BHB.Z. 2003-04-11T09:27:19.86 10.0 undecidable manual PN 274 0.0102 0.08 1.8
--.IMI.Z. 2003-04-11T09:27:19.11 10.0 positive manual PN 219 0.0098 -0.07 1.8
--.ERBM.Z. 2003-04-11T09:27:19.95 10.0 positive manual PN 106 0.0103 0.04 1.7
--.VAI.Z. 2003-04-11T09:27:19.90 10.0 negative manual PN 356 0.01 -0.27 1.8
--.ORO.Z. 2003-04-11T09:27:18.68 10.0 positive manual PN 324 0.0096 -0.13 1.9
--.ORX.Z. 2003-04-11T09:27:18.68 10.0 undecidable manual PN 324 0.0096 -0.18 1.8
--.ROB.Z. 2003-04-11T09:27:14.39 10.0 undecidable manual PG 237 0.0075 -0.31 2
--.FIN.Z. 2003-04-11T09:27:12.18 10.0 positive manual PG 220 0.0065 -0.31 2
--.BOB.Z. 2003-04-11T09:27:06.47 10.0 positive manual PG 88 0.0036 -0.24 2
--.PCP.Z. 2003-04-11T09:27:05.27 10.0 undecidable manual PG 226 0.0028 0.33 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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