Earthquake with magnitude of ML 2.2 on date 22-12-2021 and time 05:17:17 (UTC) in region 1 km SE Montanaso Lombardo (LO)

A magnitude ML 2.2 earthquake occured in region: 1 km SE Montanaso Lombardo (LO), on

  • 22-12-2021 05:17:17 (UTC)
  • 22-12-2021 06:17:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.3320, 9.4680 at 25 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
Montanaso Lombardo LO 1 2291 2291
Lodi LO 3 44945 47236
Galgagnano LO 4 1241 48477
Boffalora d'Adda LO 4 1747 50224
Tavazzano con Villavesco LO 5 6130 56354
Cornegliano Laudense LO 5 2923 59277
Lodi Vecchio LO 5 7537 66814
Cervignano d'Adda LO 6 2182 68996
Dovera CR 7 3889 72885
Borgo San Giovanni LO 7 2388 75273
Mulazzano LO 7 5758 81031
Salerano sul Lambro LO 8 2628 83659
Pieve Fissiraga LO 8 1775 85434
Corte Palasio LO 8 1540 86974
Massalengo LO 8 4538 91512
Casalmaiocco LO 8 3159 94671
Sordio LO 8 3322 97993
Spino d'Adda CR 8 6895 104888
San Martino in Strada LO 8 3641 108529
San Zenone al Lambro MI 9 4496 113025
Crespiatica LO 9 2257 115282
Casaletto Lodigiano LO 9 2994 118276
Zelo Buon Persico LO 9 7240 125516
Dresano MI 10 3059 128575
Monte Cremasco CR 10 2294 130869
Castiraga Vidardo LO 10 2740 133609
Vizzolo Predabissi MI 10 3928 137537
Cerro al Lambro MI 10 5061 142598
Abbadia Cerreto LO 10 289 142887
Caselle Lurani LO 10 3059 145946
Villanova del Sillaro LO 11 1830 147776
Pandino CR 11 9024 156800
Palazzo Pignano CR 11 3800 160600
Colturano MI 11 2100 162700
Vaiano Cremasco CR 11 3755 166455
Paullo MI 11 11455 177910
Ossago Lodigiano LO 11 1428 179338
Tribiano MI 11 3515 182853
Marudo LO 11 1655 184508
Sant'Angelo Lodigiano LO 11 13170 197678
Melegnano MI 12 17716 215394
Bagnolo Cremasco CR 12 4798 220192
Merlino LO 12 1777 221969
Chieve CR 12 2296 224265
Casaletto Ceredano CR 12 1192 225457
Cavenago d'Adda LO 12 2248 227705
Bascapè PV 12 1776 229481
Comazzo LO 12 2244 231725
Mairago LO 12 1402 233127
Valera Fratta LO 13 1685 234812
Borghetto Lodigiano LO 13 4424 239236
Graffignana LO 13 2666 241902
Mediglia MI 14 12215 254117
Capergnanica CR 14 2137 256254
Torlino Vimercati CR 14 469 256723
Torrevecchia Pia PV 14 3541 260264
Trescore Cremasco CR 15 2883 263147
Villanterio PV 15 3185 266332
Agnadello CR 15 3845 270177
Secugnago LO 15 2029 272206
Pantigliate MI 15 6064 278270
Credera Rubbiano CR 15 1621 279891
Settala MI 15 7430 287321
Carpiano MI 15 4122 291443
Brembio LO 15 2668 294111
Casaletto Vaprio CR 15 1776 295887
Turano Lodigiano LO 15 1557 297444
Pieranica CR 15 1162 298606
Torre d'Arese PV 15 966 299572
Cremosano CR 15 1764 301336
Quintano CR 15 945 302281
Rivolta d'Adda CR 16 8114 310395
Inverno e Monteleone PV 16 1489 311884
San Giuliano Milanese MI 16 38226 350110
Magherno PV 16 1730 351840
Landriano PV 16 6327 358167
Marzano PV 16 1699 359866
Gerenzago PV 16 1403 361269
Peschiera Borromeo MI 17 23397 384666
Livraga LO 17 2568 387234
San Colombano al Lambro MI 17 7343 394577
Truccazzano MI 17 6000 400577
Moscazzano CR 17 810 401387
Liscate MI 17 4095 405482
Campagnola Cremasca CR 18 673 406155
Ripalta Cremasca CR 18 3426 409581
Crema CR 18 34371 443952
Miradolo Terme PV 18 3810 447762
Rodano MI 18 4646 452408
Vailate CR 18 4596 457004
Arzago d'Adda BG 18 2718 459722
Vistarino PV 18 1578 461300
San Donato Milanese MI 18 32492 493792
Capralba CR 19 2362 496154
Copiano PV 19 1701 497855
Vidigulfo PV 19 6311 504166
Ripalta Guerina CR 19 531 504697
Melzo MI 19 18710 523407
Roncaro PV 19 1557 524964
Bertonico LO 19 1143 526107
Pianengo CR 19 2541 528648
Ceranova PV 19 2154 530802
Locate di Triulzi MI 19 10050 540852
Misano di Gera d'Adda BG 19 2964 543816
Casirate d'Adda BG 20 4115 547931
Vignate MI 20 9310 557241
Montodine CR 20 2542 559783
Chignolo Po PV 20 4017 563800
Santa Cristina e Bissone PV 20 2003 565803

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km SE of Milano (1345851 inhabitants)
29 Km SE of Sesto San Giovanni (81608 inhabitants)
29 Km NE of Pavia (72576 inhabitants)
32 Km SE of Monza (122671 inhabitants)
32 Km SE of Cinisello Balsamo (75078 inhabitants)
36 Km NW of Piacenza (102191 inhabitants)
40 Km SE of Rho (50434 inhabitants)
43 Km SW of Bergamo (119381 inhabitants)
48 Km E of Vigevano (63310 inhabitants)
49 Km W of Cremona (71901 inhabitants)
52 Km SE of Legnano (60262 inhabitants)
57 Km SE of Busto Arsizio (83106 inhabitants)
61 Km SE of Como (84495 inhabitants)
63 Km W of Brescia (196480 inhabitants)
64 Km SE of Gallarate (53343 inhabitants)
67 Km E of Novara (104380 inhabitants)
74 Km SE of Varese (80799 inhabitants)
81 Km NE of Alessandria (93943 inhabitants)
90 Km NW of Parma (192836 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.2 2021-12-22
05:17:17
45.332 9.468 25 2022-03-30
13:04:25
Bollettino Sismico Italiano INGV 99282791
Reviewed
Rev100
ML 2.2 2021-12-22
05:17:17
45.3197 9.4583 23 2021-12-22
06:07:03
Sala Sismica INGV-Roma 98807561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-22 05:17:17 ± 0.16
Latitude 45.3320 ± 0.0099
Longitude 9.4680 ± 0.0141
Depth (km) 25 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99282791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1260
Semi-minor axis of confidence ellipse (meter) 319
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 140
Circular confidence region, given by single value of horizontal uncertainty (meter) 1260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
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) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.21404
Epicentral distance of station farthest from the epicenter (degree) 2.44166
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 98807561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-22 06:07:03

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 99282791
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-04 16:17:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.STAL.HHZ. 2021-12-22T05:17:56.14 0.6 undecidable manual P 67 2.4417 54 -0.55 25
IV.ROVR.HHZ. 2021-12-22T05:17:55.20 0.3 undecidable manual S 74 1.1673 54 0.42 87
ST.VARA.EHZ. 2021-12-22T05:17:54.48 0.6 undecidable manual S 63 1.1143 97 1.12 44
IV.MBAL.EHZ. 2021-12-22T05:17:52.10 0.6 undecidable manual S 69 1.0405 98 0.92 49
ST.RONC.EHE. 2021-12-22T05:17:52.00 0.6 undecidable manual S 51 1.0342 98 0.99 48
OX.BALD.HHE. 2021-12-22T05:17:51.10 0.3 undecidable manual S 69 1.0090 98 0.84 76
IV.MABI.HHE. 2021-12-22T05:17:50.88 0.3 undecidable manual S 45 1.0270 98 0.08 97
IV.MAGA.HHZ. 2021-12-22T05:17:48.50 0.6 undecidable manual S 61 0.9254 99 0.69 56
IV.ZEN8.EHE. 2021-12-22T05:17:48.70 0.6 undecidable manual S 71 0.9371 99 0.55 58
ST.OZOL.EHE. 2021-12-22T05:17:45.08 0.6 undecidable manual P 45 1.5369 54 0.89 43
ST.CARE.EHE. 2021-12-22T05:17:42.42 0.6 undecidable manual P 38 1.3859 54 0.31 56
ST.PANI.EHZ. 2021-12-22T05:17:42.67 1.0 undecidable manual P 60 1.4875 54 -0.83 22
IV.BRMO.HHE. 2021-12-22T05:17:41.04 0.6 undecidable manual P 28 1.3049 54 0.05 61
GU.TRAV.HHE. 2021-12-22T05:17:40.42 1.0 undecidable manual P 279 1.2213 54 0.59 28
CH.MUGIO.HHE. 2021-12-22T05:17:40.80 0.6 undecidable manual S 333 0.6610 103 0.69 62
CH.MMK.HHE. 2021-12-22T05:17:40.44 0.6 undecidable manual P 305 1.2716 54 -0.09 60
ST.GAGG.HHE. 2021-12-22T05:17:40.09 0.3 undecidable manual P 54 1.2833 54 -0.59 80
CH.FUSIO.HHE. 2021-12-22T05:17:40.95 0.3 undecidable manual P 334 1.2546 54 0.67 81
IV.ERBM.EHE. 2021-12-22T05:17:39.17 0.6 undecidable manual P 143 1.1313 97 0.62 53
CH.BERNI.HHE. 2021-12-22T05:17:38.77 0.6 undecidable manual P 19 1.1475 54 -0.05 63
IV.ROVR.HHZ. 2021-12-22T05:17:38.17 0.3 undecidable manual P 74 1.1673 54 -0.91 73
SI.LUSI.HHZ. 2021-12-22T05:17:38.92 0.3 undecidable manual P 58 1.2069 54 -0.71 78
GU.PCP.HHN. 2021-12-22T05:17:37.62 0.3 undecidable manual P 220 1.0252 98 0.87 76
ST.VARA.EHZ. 2021-12-22T05:17:37.56 0.3 undecidable manual P 63 1.1143 97 -0.7 81
IV.MBAL.EHZ. 2021-12-22T05:17:36.41 0.3 undecidable manual P 69 1.0405 98 -0.6 86
GU.GRAM.HHZ. 2021-12-22T05:17:36.37 0.3 undecidable manual P 153 0.9416 99 1.04 70
GU.RNCA.HHE. 2021-12-22T05:17:36.68 1.0 undecidable manual P 203 0.9353 99 1.46 19
OX.BALD.HHE. 2021-12-22T05:17:36.07 0.3 undecidable manual P 69 1.0090 98 -0.41 91
ST.RONC.EHE. 2021-12-22T05:17:36.41 0.3 undecidable manual P 51 1.0342 98 -0.5 88
IV.MABI.HHE. 2021-12-22T05:17:35.70 0.3 undecidable manual P 45 1.0270 98 -1.09 69
IV.MDI.HHE. 2021-12-22T05:17:35.18 0.6 undecidable manual S 22 0.4703 109 0.47 68
IV.BAG8.EHE. 2021-12-22T05:17:34.61 0.6 undecidable manual P 55 0.8535 100 0.76 55
IV.ZEN8.EHE. 2021-12-22T05:17:34.74 0.3 undecidable manual P 71 0.9371 99 -0.51 91
IV.MAGA.HHZ. 2021-12-22T05:17:34.21 0.3 undecidable manual P 61 0.9254 99 -0.85 79
IV.VARE.HHE. 2021-12-22T05:17:33.06 0.3 undecidable manual P 318 0.7249 102 1.38 66
GU.GORR.HHN. 2021-12-22T05:17:31.52 0.3 undecidable manual P 190 0.7347 102 -0.34 99
CH.MUGIO.HHE. 2021-12-22T05:17:30.26 0.3 undecidable manual P 333 0.6610 103 -0.35 98
IV.BOB.HHE. 2021-12-22T05:17:28.55 0.3 undecidable manual P 181 0.5639 106 -0.46 100
IV.MDI.HHE. 2021-12-22T05:17:26.28 0.3 undecidable manual P 22 0.4703 109 -1.21 72
IV.MERA.HNE. 2021-12-22T05:17:24.97 0.6 undecidable manual P 356 0.3741 115 -0.99 54
IV.CTL8.HNZ. 2021-12-22T05:17:23.51 0.6 undecidable manual P 105 0.2140 132 -0.15 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
ST.VARA.EHN. ML:1.3 0.00001258834 1.2416 AML other m 2021-12-22T05:17:45.47
IV.MBAL.EHE. ML:2.0 0.00007690617 0.1824 AML other m 2021-12-22T05:17:53.23
IV.MAGA.HHE. ML:2.3 0.000193 0.4 AML other m 2021-12-22T05:17:53.43
IV.MBAL.EHN. ML:1.8 0.000050826055 0.1184 AML other m 2021-12-22T05:17:55.09
IV.MAGA.HHN. ML:2.3 0.0001777264 0.2592 AML other m 2021-12-22T05:17:56.28
ST.VARA.EHE. ML:2.2 0.000107528395 0.32 AML other m 2021-12-22T05:17:56.52
IV.ROVR.HHN. ML:2.2 0.00010439999999999999 0.16 AML other m 2021-12-22T05:17:56.53
IV.ROVR.HHE. ML:2.0 0.00006606715500000001 0.1792 AML other m 2021-12-22T05:17:56.62
SI.LUSI.HHN. ML:2.2 0.00010471409 0.1984 AML other m 2021-12-22T05:17:57.84
SI.LUSI.HHE. ML:2.1 0.00007165547499999999 0.2784 AML other m 2021-12-22T05:17:58.53
ST.VARA.HNN. ML:2.1 0.000096569045 0.4384 AML other m 2021-12-22T05:17:58.47
IV.MBAL.HNE. ML:2.3 0.00013796064499999998 0.96 AML other m 2021-12-22T05:17:59.86
IV.ROVR.HNE. ML:2.3 0.00012764805 0.5408 AML other m 2021-12-22T05:18:01.34
ST.VARA.HNE. ML:2.2 0.000101318755 0.4992 AML other m 2021-12-22T05:18:01.21
ST.PANI.HNN. ML:2.8 0.00025385314999999995 0.7008 AML other m 2021-12-22T05:18:03.28
IV.IMOL.HNN. ML:3.8 0.0017180715000000002 0.048 AML other m 2021-12-22T05:18:04.75
IV.IMOL.HNE. ML:3.6 0.001154188 0.0608 AML other m 2021-12-22T05:18:06.04
ST.PANI.EHN. ML:1.9 0.000035777919999999996 0.5792 AML other m 2021-12-22T05:18:09.64
IV.STAL.HHN. ML:2.1 0.000020433504999999997 1.4176 AML other m 2021-12-22T05:18:13.45
IV.ROVR.HNN. ML:2.5 0.00019825645 0.6016 AML other m 2021-12-22T05:18:14.49
IV.MBAL.HNN. ML:2.3 0.00016609335 1.3792 AML other m 2021-12-22T05:18:16.19
IV.PP3.EHN. ML:4.1 0.0007624576000000001 1.1392 AML other m 2021-12-22T05:18:17.37
ST.PANI.HNE. ML:2.5 0.00014535368485 0.8 AML other m 2021-12-22T05:18:17.01
IV.STAL.HHE. ML:2.2 0.00002513927 0.9984 AML other m 2021-12-22T05:18:20.75
IV.IMOL.EHN. ML:2.3 0.00005349849 0.7008 AML other m 2021-12-22T05:18:25.55
ST.PANI.EHE. ML:1.8 0.000030541765 1.4208 AML other m 2021-12-22T05:18:28.10
IV.PP3.EHE. ML:4.1 0.0007662738 1.5232 AML other m 2021-12-22T05:18:33.54
IV.PP3.HNN. ML:4.1 0.0008125278 1.6896 AML other m 2021-12-22T05:18:39.07
IV.FIAM.HHN. ML:0.0 0.000041864305000000005 0.16 AML other m 2021-12-22T05:18:41.73
IV.FIAM.HHE. ML:0.0 0.0000213129 0.08 AML other m 2021-12-22T05:18:45.13
IV.IMOL.EHE. ML:2.4 0.00007674799999999992 0.7008 AML other m 2021-12-22T05:18:46.31
IV.STAL.HNN. ML:3.0 0.0001580677 0.9696 AML other m 2021-12-22T05:18:53.06
IV.STAL.HNE. ML:3.0 0.00016183815 1.1104 AML other m 2021-12-22T05:18:59.12
IV.FIAM.HNE. ML:0.0 0.0031433651500000002 1.2512 AML other m 2021-12-22T05:19:03.04
IV.FIAM.HNN. ML:0.0 0.000161929 0.7808 AML other m 2021-12-22T05:19:07.51
IV.PP3.HNE. ML:4.2 0.00088487955 1.5104 AML other m 2021-12-22T05:19:27.24
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download