Earthquake with magnitude of ML 2.2 on date 02-08-2021 and time 06:43:00 (Italy) in region 1 km NE Salsomaggiore Terme (PR)

A magnitude ML 2.2 earthquake occured in region: 1 km NE Salsomaggiore Terme (PR), on

  • 02-08-2021 04:43:00 (UTC)
  • 02-08-2021 06:43:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.828, 9.986 at 5 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
Salsomaggiore Terme PR 1 19831 19831
Fidenza PR 8 26770 46601
Alseno PC 8 4714 51315
Castell'Arquato PC 10 4713 56028
Pellegrino Parmense PR 11 1048 57076
Lugagnano Val d'Arda PC 13 4116 61192
Vernasca PC 13 2131 63323
Fiorenzuola d'Arda PC 13 15297 78620
Medesano PR 15 10828 89448
Noceto PR 15 13001 102449
Fontevivo PR 15 5597 108046
Soragna PR 16 4834 112880
Varano de' Melegari PR 16 2676 115556
Fontanellato PR 16 7033 122589
Fornovo di Taro PR 18 6100 128689
Busseto PR 18 7054 135743
Besenzone PC 18 978 136721
Carpaneto Piacentino PC 18 7715 144436
Cadeo PC 19 6118 150554
Bore PR 19 749 151303
Cortemaggiore PC 19 4644 155947
Collecchio PR 20 14403 170350

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km W of Parma (192836 inhabitants)
34 Km SE of Piacenza (102191 inhabitants)
34 Km S of Cremona (71901 inhabitants)
53 Km W of Reggio nell'Emilia (171345 inhabitants)
71 Km W of Carpi (70699 inhabitants)
76 Km SE of Pavia (72576 inhabitants)
77 Km W of Modena (184973 inhabitants)
81 Km N of La Spezia (93959 inhabitants)
81 Km S of Brescia (196480 inhabitants)
84 Km N of Carrara (63133 inhabitants)
89 Km N of Massa (69479 inhabitants)
95 Km SE of Milano (1345851 inhabitants)
95 Km E of Genova (586655 inhabitants)
98 Km SE of Sesto San Giovanni (81608 inhabitants)
100 Km S of Bergamo (119381 inhabitants)
Recent and historical seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows 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 reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows 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 https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows 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 the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 2.2 2021-08-02
04:43:00
44.8275 9.986 5 2021-08-02
04:52:55
Sala Sismica INGV-Roma 93545041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-02 04:43:00 ± 0.29
Latitude 44.8275 ± 0.0099
Longitude 9.9860 ± 0.0190
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93545041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1573
Semi-minor axis of confidence ellipse (meter) 858
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 130
Circular confidence region, given by single value of horizontal uncertainty (meter) 1570
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 128
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.34988
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 10
Magnitude information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 93545041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-02 04:52:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VIVA.HHZ. 2021-08-02T04:44:45.86 3.0 undecidable manual Sn -0.62 0
IV.RMP.HHZ. 2021-08-02T04:44:45.59 3.0 undecidable manual Sn 0.99 0
IV.PZUN.HHZ. 2021-08-02T04:44:39.47 3.0 negative manual Pn 8.2 0
IV.SACS.HHZ. 2021-08-02T04:44:17.40 3.0 undecidable manual Sn 1.23 0
IV.CERT.HHZ. 2021-08-02T04:44:12.97 3.0 negative manual Pg 13.76 0
IV.VVLD.HHZ. 2021-08-02T04:44:10.09 3.0 undecidable manual Pn 6.12 0
IV.ARVD.HHZ. 2021-08-02T04:43:46.55 3.0 positive manual Pn 2.78 0
ST.DOSS.HHZ. 2021-08-02T04:43:43.56 1.0 undecidable manual S 38 1.3499 50 -0.31 19
IV.SACS.HHZ. 2021-08-02T04:43:42.12 3.0 undecidable manual Pn -1.15 0
SI.LUSI.HHZ. 2021-08-02T04:43:42.60 0.6 undecidable manual S 30 1.3157 50 -0.27 38
ST.RONC.EHZ. 2021-08-02T04:43:40.74 1.0 undecidable manual S 21 1.2357 50 0.25 20
ST.VARA.EHZ. 2021-08-02T04:43:39.03 0.6 undecidable manual S 32 1.1853 50 0.03 42
IV.ROVR.HHZ. 2021-08-02T04:43:37.21 0.3 undecidable manual S 43 1.1197 50 0.14 62
IV.MAGA.HHZ. 2021-08-02T04:43:35.24 0.6 undecidable manual S 25 1.0495 50 0.26 41
IV.ZONE.HHZ. 2021-08-02T04:43:32.61 0.3 undecidable manual S 6 0.9398 50 0.87 51
ST.DOSS.HHZ. 2021-08-02T04:43:25.22 0.1 undecidable manual P 38 1.3499 50 -0.11 79
ST.RONC.EHZ. 2021-08-02T04:43:23.18 0.1 undecidable manual P 21 1.2357 50 -0.2 80
SI.LUSI.HHZ. 2021-08-02T04:43:23.77 0.6 positive manual P 30 1.3157 50 -0.98 30
ST.VARA.EHZ. 2021-08-02T04:43:22.36 0.6 positive manual P 32 1.1853 50 -0.16 41
IV.MSSA.HHE. 2021-08-02T04:43:22.04 0.3 undecidable manual S 213 0.6106 50 0.08 70
IV.ROVR.HHZ. 2021-08-02T04:43:21.14 1.0 negative manual P 43 1.1197 50 -0.26 20
GU.GORR.HHE. 2021-08-02T04:43:20.11 0.6 undecidable manual S 246 0.5396 50 0.24 46
IV.MAGA.HHZ. 2021-08-02T04:43:19.92 0.1 undecidable manual P 25 1.0495 50 -0.28 82
IV.ZONE.HHZ. 2021-08-02T04:43:19.02 0.3 negative manual P 6 0.9398 50 0.7 55
GU.GRAM.HHE. 2021-08-02T04:43:13.90 0.3 undecidable manual S 171 0.3417 97 0.65 64
IV.MSSA.HHE. 2021-08-02T04:43:11.92 0.1 undecidable manual P 213 0.6106 50 -0.76 77
GU.GORR.HHE. 2021-08-02T04:43:11.47 0.1 undecidable manual P 246 0.5396 50 0 97
GU.GRAM.HHE. 2021-08-02T04:43:07.62 0.1 undecidable manual P 171 0.3417 97 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NDIM.HHN. ML:2.5 0.00049 0.42 AML other m 2021-08-02T04:43:25.25
IV.NDIM.HNN. ML:2.6 0.0007045 0.44 AML other m 2021-08-02T04:43:25.25
IV.NDIM.HNE. ML:2.7 0.0008565 1.56 AML other m 2021-08-02T04:43:28.84
IV.NDIM.HHE. ML:2.7 0.0007585 1.56 AML other m 2021-08-02T04:43:28.06
IV.ZONE.HHE. ML:1.8 6.315E-5 0.22 AML other m 2021-08-02T04:43:34.31
IV.ZONE.HHN. ML:1.8 5.71E-5 1.24 AML other m 2021-08-02T04:43:35.76
IV.MAGA.HHN. ML:2 8.405E-5 0.56 AML other m 2021-08-02T04:43:37.44
IV.MAGA.HHE. ML:2.2 0.0001096 0.64 AML other m 2021-08-02T04:43:37.38
IV.ROVR.HHN. ML:2.2 0.0001211 0.72 AML other m 2021-08-02T04:43:38.60
IV.ROVR.HHE. ML:1.9 5.58E-5 1.1 AML other m 2021-08-02T04:43:39.31
ST.RONC.EHE. ML:2.3 0.00010965 0.6 AML other m 2021-08-02T04:43:41.50
ST.RONC.EHN. ML:2.3 0.000119 0.28 AML other m 2021-08-02T04:43:42.48
SI.LUSI.HHN. ML:2.3 0.000111 1.2 AML other m 2021-08-02T04:43:43.75
SI.LUSI.HHE. ML:2.1 6.705E-5 0.96 AML other m 2021-08-02T04:43:43.59
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol 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