Earthquake with magnitude of ML 1.4 on date 24-01-2022 and time 02:51:44 (Italy) in region 1 km SW Santo Stefano di Magra (SP)

A magnitude ML 1.4 earthquake occured in region: 1 km SW Santo Stefano di Magra (SP), on

  • 24-01-2022 01:51:44 (UTC)
  • 24-01-2022 02:51:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1570, 9.9130 at 11 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Santo Stefano di Magra SP 1 9360 9360
Vezzano Ligure SP 3 7356 16716
Bolano SP 4 7813 24529
Follo SP 4 6337 30866
Arcola SP 5 10607 41473
Podenzana MS 6 2180 43653
Sarzana SP 6 21976 65629
Aulla MS 7 11263 76892
La Spezia SP 9 93959 170851
Fosdinovo MS 9 4883 175734
Lerici SP 9 10228 185962
Tresana MS 10 2044 188006
Ameglia SP 11 4365 192371
Castelnuovo Magra SP 11 8415 200786
Calice al Cornoviglio SP 11 1138 201924
Riccò del Golfo di Spezia SP 12 3698 205622
Beverino SP 12 2429 208051
Portovenere SP 13 3630 211681
Ortonovo SP 13 8277 219958
Pignone SP 15 565 220523
Riomaggiore SP 15 1576 222099
Villafranca in Lunigiana MS 15 4770 226869
Licciana Nardi MS 16 4949 231818
Rocchetta di Vara SP 16 703 232521
Borghetto di Vara SP 17 938 233459
Carrara MS 17 63133 296592
Brugnato SP 17 1270 297862
Vernazza SP 18 848 298710
Mulazzo MS 18 2424 301134
Zignago SP 19 532 301666
Bagnone MS 19 1887 303553
Fivizzano MS 19 7925 311478
Filattiera MS 20 2309 313787

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km NE of La Spezia (93959 inhabitants)
17 Km NW of Carrara (63133 inhabitants)
23 Km NW of Massa (69479 inhabitants)
42 Km NW of Viareggio (62467 inhabitants)
59 Km NW of Lucca (89046 inhabitants)
63 Km NW of Pisa (89158 inhabitants)
74 Km NW of Livorno (159219 inhabitants)
79 Km SW of Parma (192836 inhabitants)
83 Km E of Genova (586655 inhabitants)
83 Km SW of Reggio nell'Emilia (171345 inhabitants)
84 Km W of Pistoia (90315 inhabitants)
97 Km SW of Modena (184973 inhabitants)
100 Km W of Prato (191150 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.4 2022-01-24
01:51:44
44.1573 9.9128 11 2022-01-24
01:58:16
Sala Sismica INGV-Roma 100107981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-24 01:51:44 ± 0.16
Latitude 44.1573 ± 0.0126
Longitude 9.9128 ± 0.0100
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 100107981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1351
Semi-minor axis of confidence ellipse (meter) 642
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 192
Circular confidence region, given by single value of horizontal uncertainty (meter) 1350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.61963
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 100107981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-24 01:58:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.POPM.HHZ. 2022-01-24T01:52:06.39 0.3 undecidable manual S 100 0.6160 50 0.71 57
IV.PII.HHZ. 2022-01-24T01:52:05.01 0.6 undecidable manual S 134 0.6196 50 -0.77 37
IV.BDI.HHZ. 2022-01-24T01:52:02.10 0.6 undecidable manual S 101 0.4991 50 -0.11 46
GU.MAIM.HHZ. 2022-01-24T01:52:01.28 0.6 undecidable manual S 120 0.4820 50 -0.44 43
GU.CARD.HHZ. 2022-01-24T01:52:00.00 0.6 undecidable manual S 108 0.4290 50 -0.15 46
GU.POPM.HHZ. 2022-01-24T01:51:57.47 0.3 positive manual P 100 0.6160 50 0.57 60
GU.SARM.EHE. 2022-01-24T01:51:57.50 0.6 undecidable manual S 85 0.3507 50 -0.32 45
IV.MSSA.HHZ. 2022-01-24T01:51:56.32 0.6 undecidable manual S 299 0.3247 50 -0.73 40
IV.PII.HHZ. 2022-01-24T01:51:56.48 0.6 undecidable manual P 134 0.6196 50 -0.48 41
GU.MAIM.HHZ. 2022-01-24T01:51:55.05 0.6 negative manual P 120 0.4820 50 0.44 43
IV.BDI.HHZ. 2022-01-24T01:51:55.38 1.0 positive manual P 101 0.4991 50 0.48 21
GU.CARD.HHZ. 2022-01-24T01:51:54.00 1.0 negative manual P 108 0.4290 50 0.29 22
GU.SARM.EHE. 2022-01-24T01:51:52.60 0.1 undecidable manual P 85 0.3507 50 0.23 92
GU.GRAM.HHZ. 2022-01-24T01:51:52.54 3.0 positive manual P 0.11 0
IV.MSSA.HHZ. 2022-01-24T01:51:51.98 0.1 positive manual P 299 0.3247 50 0.06 96
GU.EQUI.HHZ. 2022-01-24T01:51:51.64 0.6 undecidable manual S 87 0.1727 119 -0.89 38
IV.PLMA.HHZ. 2022-01-24T01:51:50.55 0.6 undecidable manual S 202 0.1160 130 -0.18 49
GU.EQUI.HHZ. 2022-01-24T01:51:49.31 0.1 undecidable manual P 87 0.1727 119 0 100
IV.PLMA.HHZ. 2022-01-24T01:51:48.58 0.1 positive manual P 202 0.1160 130 0.31 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PLMA.HHN. ML:1.4 0.00028349999999999995 0.3 AML other m 2022-01-24T01:51:50.74
IV.PLMA.HHE. ML:1.7 0.000481 0.2 AML other m 2022-01-24T01:51:50.58
GU.EQUI.HHE. ML:1.0 0.00008525 0.2 AML other m 2022-01-24T01:51:51.82
GU.EQUI.HHN. ML:1.0 0.0000765 0.24 AML other m 2022-01-24T01:51:51.93
IV.MSSA.HHN. ML:1.8 0.0002375 0.12 AML other m 2022-01-24T01:51:56.46
IV.MSSA.HHE. ML:2.0 0.00041299999999999996 0.1 AML other m 2022-01-24T01:51:56.76
GU.GRAM.HHE. ML:1.4 0.00010045 0.22 AML other m 2022-01-24T01:51:58.45
GU.GRAM.HHN. ML:1.4 0.0000799 0.62 AML other m 2022-01-24T01:51:58.50
GU.CARD.HHE. ML:1.6 0.00010889999999999999 0.96 AML other m 2022-01-24T01:52:00.72
GU.CARD.HHN. ML:1.5 0.00009355 0.06 AML other m 2022-01-24T01:52:00.81
IV.BDI.HHE. ML:1.0 0.00002615 0.28 AML other m 2022-01-24T01:52:05.80
IV.BDI.HHN. ML:1.2 0.000034500000000000005 0.64 AML other m 2022-01-24T01:52:05.88
GU.POPM.HHE. ML:1.4 0.0000412 0.76 AML other m 2022-01-24T01:52:07.34
GU.POPM.HHN. ML:1.4 0.0000432 0.58 AML other m 2022-01-24T01:52:07.95
IV.PII.HHN. ML:1.6 0.00006945 0.2 AML other m 2022-01-24T01:52:07.79
IV.PII.HHE. ML:1.5 0.00005395 0.18 AML other m 2022-01-24T01:52:08.19
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