Earthquake with magnitude of Md 2.1 on date 20-09-1986 and time 15:00:00 (Italy) in region 2 km E Sant'Angelo Lodigiano (LO)
A magnitude Md 2.1 earthquake occured in region: 2 km E Sant'Angelo Lodigiano (LO), on
- 20-09-1986 13:00:00 (UTC)
- 20-09-1986 15:00:00 (UTC +02:00) Italian time
and geographic coordinates (lat, lon) 45.2390, 9.4320 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.
Display location by
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Municipalities within 20 km from the epicenter
Distances are determinated based on the geographic coordintes of the (Istat).
| Municipality | Region | Distance (km) | Inhabitants | Cumulative Inhabitants |
|---|---|---|---|---|
| Sant'Angelo Lodigiano | LO | 2 | 13170 | 13170 |
| Castiraga Vidardo | LO | 3 | 2740 | 15910 |
| Graffignana | LO | 3 | 2666 | 18576 |
| Pieve Fissiraga | LO | 4 | 1775 | 20351 |
| Villanova del Sillaro | LO | 4 | 1830 | 22181 |
| Borgo San Giovanni | LO | 4 | 2388 | 24569 |
| Marudo | LO | 5 | 1655 | 26224 |
| Massalengo | LO | 5 | 4538 | 30762 |
| Inverno e Monteleone | PV | 6 | 1489 | 32251 |
| Villanterio | PV | 6 | 3185 | 35436 |
| Borghetto Lodigiano | LO | 6 | 4424 | 39860 |
| Cornegliano Laudense | LO | 6 | 2923 | 42783 |
| Gerenzago | PV | 7 | 1403 | 44186 |
| Lodi Vecchio | LO | 7 | 7537 | 51723 |
| Salerano sul Lambro | LO | 7 | 2628 | 54351 |
| Caselle Lurani | LO | 7 | 3059 | 57410 |
| Miradolo Terme | PV | 7 | 3810 | 61220 |
| San Colombano al Lambro | MI | 8 | 7343 | 68563 |
| Valera Fratta | LO | 8 | 1685 | 70248 |
| Magherno | PV | 8 | 1730 | 71978 |
| Casaletto Lodigiano | LO | 8 | 2994 | 74972 |
| Ossago Lodigiano | LO | 8 | 1428 | 76400 |
| San Martino in Strada | LO | 9 | 3641 | 80041 |
| Torre d'Arese | PV | 9 | 966 | 81007 |
| Santa Cristina e Bissone | PV | 9 | 2003 | 83010 |
| Copiano | PV | 10 | 1701 | 84711 |
| Tavazzano con Villavesco | LO | 10 | 6130 | 90841 |
| Lodi | LO | 10 | 44945 | 135786 |
| Livraga | LO | 10 | 2568 | 138354 |
| Vistarino | PV | 10 | 1578 | 139932 |
| Corteolona e Genzone | PV | 10 | 2580 | 142512 |
| Chignolo Po | PV | 11 | 4017 | 146529 |
| Marzano | PV | 11 | 1699 | 148228 |
| Montanaso Lombardo | LO | 11 | 2291 | 150519 |
| Brembio | LO | 11 | 2668 | 153187 |
| Filighera | PV | 11 | 876 | 154063 |
| San Zenone al Lambro | MI | 11 | 4496 | 158559 |
| Torrevecchia Pia | PV | 12 | 3541 | 162100 |
| Bascapè | PV | 12 | 1776 | 163876 |
| Mairago | LO | 12 | 1402 | 165278 |
| Roncaro | PV | 12 | 1557 | 166835 |
| Torre de' Negri | PV | 12 | 329 | 167164 |
| Belgioioso | PV | 12 | 6187 | 173351 |
| Costa de' Nobili | PV | 12 | 370 | 173721 |
| Sordio | LO | 12 | 3322 | 177043 |
| Secugnago | LO | 13 | 2029 | 179072 |
| Cerro al Lambro | MI | 13 | 5061 | 184133 |
| Albuzzano | PV | 13 | 3513 | 187646 |
| Badia Pavese | PV | 13 | 363 | 188009 |
| Corte Palasio | LO | 13 | 1540 | 189549 |
| Orio Litta | LO | 13 | 2064 | 191613 |
| Galgagnano | LO | 13 | 1241 | 192854 |
| Casalmaiocco | LO | 14 | 3159 | 196013 |
| Cura Carpignano | PV | 14 | 4851 | 200864 |
| Pieve Porto Morone | PV | 14 | 2648 | 203512 |
| Ospedaletto Lodigiano | LO | 14 | 1921 | 205433 |
| Boffalora d'Adda | LO | 14 | 1747 | 207180 |
| Cavenago d'Adda | LO | 14 | 2248 | 209428 |
| Zerbo | PV | 14 | 429 | 209857 |
| Vizzolo Predabissi | MI | 15 | 3928 | 213785 |
| Ceranova | PV | 15 | 2154 | 215939 |
| Abbadia Cerreto | LO | 15 | 289 | 216228 |
| Mulazzano | LO | 15 | 5758 | 221986 |
| Cervignano d'Adda | LO | 15 | 2182 | 224168 |
| Turano Lodigiano | LO | 15 | 1557 | 225725 |
| Spessa | PV | 15 | 605 | 226330 |
| Linarolo | PV | 15 | 2821 | 229151 |
| San Zenone al Po | PV | 15 | 596 | 229747 |
| Lardirago | PV | 15 | 1210 | 230957 |
| Monticelli Pavese | PV | 16 | 678 | 231635 |
| Landriano | PV | 16 | 6327 | 237962 |
| Melegnano | MI | 16 | 17716 | 255678 |
| Dresano | MI | 16 | 3059 | 258737 |
| Sant'Alessio con Vialone | PV | 16 | 957 | 259694 |
| Senna Lodigiana | LO | 16 | 1911 | 261605 |
| Dovera | CR | 16 | 3889 | 265494 |
| Vidigulfo | PV | 17 | 6311 | 271805 |
| Carpiano | MI | 17 | 4122 | 275927 |
| Bornasco | PV | 17 | 2649 | 278576 |
| Arena Po | PV | 17 | 1574 | 280150 |
| Casaletto Ceredano | CR | 17 | 1192 | 281342 |
| Colturano | MI | 17 | 2100 | 283442 |
| Valle Salimbene | PV | 17 | 1511 | 284953 |
| Crespiatica | LO | 17 | 2257 | 287210 |
| Portalbera | PV | 18 | 1524 | 288734 |
| Chieve | CR | 18 | 2296 | 291030 |
| Zeccone | PV | 18 | 1719 | 292749 |
| San Cipriano Po | PV | 19 | 488 | 293237 |
| Casalpusterlengo | LO | 19 | 15347 | 308584 |
| Monte Cremasco | CR | 19 | 2294 | 310878 |
| Bertonico | LO | 19 | 1143 | 312021 |
| Spino d'Adda | CR | 19 | 6895 | 318916 |
| Credera Rubbiano | CR | 19 | 1621 | 320537 |
| Somaglia | LO | 19 | 3811 | 324348 |
| Tribiano | MI | 19 | 3515 | 327863 |
| Zelo Buon Persico | LO | 19 | 7240 | 335103 |
| Vaiano Cremasco | CR | 20 | 3755 | 338858 |
| Bagnolo Cremasco | CR | 20 | 4798 | 343656 |
| San Genesio ed Uniti | PV | 20 | 3856 | 347512 |
| Terranova dei Passerini | LO | 20 | 897 | 348409 |
| Mediglia | MI | 20 | 12215 | 360624 |
| Castel San Giovanni | PC | 20 | 13726 | 374350 |
| Paullo | MI | 20 | 11455 | 385805 |
Municipalities with at least 50000 inhabitants
An earthquake occurred to
22 Km E of Pavia (72576 inhabitants)
29 Km NW of Piacenza (102191 inhabitants)
32 Km SE of Milano (1345851 inhabitants)
36 Km SE of Sesto San Giovanni (81608 inhabitants)
40 Km SE of Cinisello Balsamo (75078 inhabitants)
40 Km SE of Monza (122671 inhabitants)
45 Km SE of Rho (50434 inhabitants)
46 Km E of Vigevano (63310 inhabitants)
48 Km W of Cremona (71901 inhabitants)
54 Km SW of Bergamo (119381 inhabitants)
56 Km SE of Legnano (60262 inhabitants)
62 Km SE of Busto Arsizio (83106 inhabitants)
67 Km E of Novara (104380 inhabitants)
68 Km SE of Gallarate (53343 inhabitants)
69 Km SE of Como (84495 inhabitants)
70 Km W of Brescia (196480 inhabitants)
74 Km E of Alessandria (93943 inhabitants)
80 Km SE of Varese (80799 inhabitants)
86 Km NW of Parma (192836 inhabitants)
100 Km NE of Genova (586655 inhabitants)
Recent and historical seismicity
Not available maps for this sismic event.
Seismic hazard
Not available maps for this sismic event.
Shakemap
Not available maps for this sismic event.
Felt maps
Not available maps for this sismic event.
Locations history
| Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
|---|---|---|---|---|---|---|---|---|
|
Bulletin Rev1000 |
Md 2.1 | 1986-09-20 13:00:00 |
45.239 | 9.432 | 5 | 2013-07-15 08:41:04 |
Bollettino Sismico Italiano INGV | 34419 |
Preferred location and magnitude until now.
Origin information
Origin
| Field | Value |
|---|---|
| Time (UTC) | 1986-09-20 13:00:00 ± 1.069 |
| Latitude | 45.2390 ± 0.0726 |
| Longitude | 9.4320 ± 0.1008 |
| Depth (km) | 5 (operator assigned) |
| Evaluation mode of Origin | manual |
| Evaluation status of Origin | reviewed |
| Version | 1000 -> BULLETIN-VAX |
| Event type | earthquake |
| Origin ID | 34419 |
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) | 11291.8 |
| Confidence level of the uncertainty (%) | 68 |
Quality
| Field | Value |
|---|---|
| Largest azimuthal gap in station distribution as seen from epicenter (degree) | 227 |
| Number of associated phases, regardless of their use for origin computation | 8 |
| Number of defining phases | 8 |
| 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) | 0.00332 |
| Epicentral distance of station farthest from the epicenter (degree) | 0.01603 |
| Number of stations at which the event was observed | 8 |
| Number of stations from which data was used for origin computation | 8 |
Magnitude information
Md:2.1
| Field | Value |
|---|---|
| Value | 2.1 |
| Uncertainty | |
| Num. used stations | 1 |
| Type of magnitude | Md |
| Reference to an origin | 34419 |
| Agency | INGV |
| Autore | Bollettino Sismico Italiano INGV |
| Time of creation (UTC) | 2013-01-04 17:34:58 |
Picking and Arrival
| SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
|---|---|---|---|---|---|---|---|---|---|---|
| --.STV.Z. | 1986-09-20T13:00:32.40 | 10.0 | undecidable | manual | PN | 237 | 1.776 | 0.98 | 0.4 | |
| --.IMP.Z. | 1986-09-20T13:00:30.70 | 10.0 | undecidable | manual | PN | 220 | 1.7094 | 0.29 | 1 | |
| --.LSD.Z. | 1986-09-20T13:00:29.80 | 10.0 | undecidable | manual | PN | 278 | 1.6095 | 0.8 | 1 | |
| --.FIN.Z. | 1986-09-20T13:00:25.20 | 10.0 | undecidable | manual | PN | 220 | 1.3431 | -0.15 | 1.5 | |
| --.ORX.Z. | 1986-09-20T13:00:21.10 | 10.0 | undecidable | manual | PN | 291 | 1.0878 | -0.71 | 0.8 | |
| --.CKI.Z. | 1986-09-20T13:00:21.00 | 10.0 | undecidable | manual | PN | 225 | 1.1544 | -1.73 | 0.4 | |
| --.BVT.Z. | 1986-09-20T13:00:16.40 | 10.0 | undecidable | manual | PG | 160 | 0.8103 | -0.32 | 1.3 | |
| --.VEA.Z. | 1986-09-20T13:00:08.70 | 10.0 | undecidable | manual | PG | 159 | 0.3663 | 0.31 | 1.6 |
TDMT - Time Domain Moment Tensor
Not available TDMT solution for this seismic event.
Fault Plane solutions in the area
Not available maps for this sismic event.