Earthquake with magnitude of ML 1.4 on date 22-11-2021 and time 12:18:54 (UTC) in region 5 km E Premilcuore (FC)

A magnitude ML 1.4 earthquake occured in region: 5 km E Premilcuore (FC), on

  • 22-11-2021 12:18:54 (UTC)
  • 22-11-2021 13:18:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.999, 11.836 at 32 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
Portico e San Benedetto FC 5 756 756
Premilcuore FC 5 799 1555
Galeata FC 6 2516 4071
Rocca San Casciano FC 7 1910 5981
Santa Sofia FC 8 4136 10117
Civitella di Romagna FC 8 3786 13903
Tredozio FC 12 1212 15115
Dovadola FC 14 1653 16768
Predappio FC 16 6346 23114
Modigliana FC 18 4560 27674
San Godenzo FI 19 1167 28841
Bagno di Romagna FC 19 6026 34867
Marradi FI 20 3139 38006

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km SW of Forlì (117913 inhabitants)
32 Km S of Faenza (58541 inhabitants)
36 Km W of Cesena (96758 inhabitants)
41 Km S of Imola (69797 inhabitants)
53 Km E of Firenze (382808 inhabitants)
55 Km SW of Ravenna (159116 inhabitants)
59 Km E of Scandicci (50609 inhabitants)
59 Km W of Rimini (147750 inhabitants)
59 Km N of Arezzo (99543 inhabitants)
61 Km E of Prato (191150 inhabitants)
68 Km SE of Bologna (386663 inhabitants)
74 Km E of Pistoia (90315 inhabitants)
86 Km NE of Siena (53903 inhabitants)
87 Km W of Pesaro (94582 inhabitants)
95 Km S of Ferrara (133155 inhabitants)
96 Km W of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
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
Reviewed
Rev100
ML 1.4 2021-11-22
12:18:54
43.9988 11.8357 32 2021-11-22
12:24:34
Sala Sismica INGV-Roma 97688501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-22 12:18:54 ± 0.31
Latitude 43.9988 ± 0.0081
Longitude 11.8357 ± 0.0275
Depth (km) 32 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97688501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2101
Semi-minor axis of confidence ellipse (meter) 744
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 264
Circular confidence region, given by single value of horizontal uncertainty (meter) 2100
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 180
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.09443
Epicentral distance of station farthest from the epicenter (degree) 0.38851
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 97688501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-22 12:24:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CRE.HHZ. 2021-11-22T12:19:10.67 0.6 undecidable manual S 168 0.3885 121 0.49 60
IV.RUFI.EHZ. 2021-11-22T12:19:07.79 0.6 undecidable manual S 236 0.2842 131 0.11 66
IV.BRIS.HHZ. 2021-11-22T12:19:06.74 0.6 undecidable manual S 348 0.2311 137 0.2 64
IV.ASQU.HHZ. 2021-11-22T12:19:05.88 0.6 undecidable manual S 189 0.205 141 -0.15 65
IV.LMD.HHZ. 2021-11-22T12:19:04.95 0.6 undecidable manual S 310 0.1214 155 0.24 65
IV.CRE.HHZ. 2021-11-22T12:19:03.88 0.6 negative manual P 168 0.3885 121 0.29 62
IV.SFI.EHZ. 2021-11-22T12:19:03.98 0.6 undecidable manual S 175 0.0944 160 -0.42 63
IV.RUFI.EHZ. 2021-11-22T12:19:02.14 0.6 positive manual P 236 0.2842 131 -0.01 66
IV.ASQU.HHZ. 2021-11-22T12:19:01.12 0.6 negative manual P 189 0.205 141 -0.08 66
IV.BRIS.HHZ. 2021-11-22T12:19:01.39 0.3 positive manual P 348 0.2311 137 -0.1 100
IV.LMD.HHZ. 2021-11-22T12:19:00.01 1.0 undecidable manual P 310 0.1214 155 -0.42 32
IV.SFI.EHZ. 2021-11-22T12:18:59.96 1.0 positive manual P 175 0.0944 160 -0.3 33
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.EHN. ML:1.3 8.995E-5 1.1 AML other m 2021-11-22T12:19:05.42
IV.SFI.EHE. ML:1.1 5.785E-5 0.46 AML other m 2021-11-22T12:19:05.20
IV.ASQU.HHN. ML:1.4 8.66E-5 0.22 AML other m 2021-11-22T12:19:07.34
IV.ASQU.HHE. ML:1.3 7.98E-5 0.24 AML other m 2021-11-22T12:19:07.37
IV.BRIS.HHE. ML:1.7 0.0001955 0.42 AML other m 2021-11-22T12:19:08.23
IV.BRIS.HHN. ML:1.6 0.0001295 1.28 AML other m 2021-11-22T12:19:08.86
IV.CRE.HHE. ML:1.2 3.89E-5 1.68 AML other m 2021-11-22T12:19:11.08
IV.CRE.HHN. ML:1.4 5.54E-5 0.88 AML other m 2021-11-22T12:19:12.15
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download