Earthquake with magnitude of Md 1.4 on date 21-09-2021 and time 00:22:39 (UTC) in region 2 km NW Caldarola (MC)

A magnitude Md 1.4 earthquake occured in region: 2 km NW Caldarola (MC), on

  • 21-09-2021 00:22:39 (UTC)
  • 21-09-2021 02:22:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.155, 13.208 at 23 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
Caldarola MC 2 1823 1823
Belforte del Chienti MC 3 1886 3709
Serrapetrona MC 3 966 4675
Camporotondo di Fiastrone MC 5 563 5238
Cessapalombo MC 7 512 5750
San Severino Marche MC 9 12726 18476
Tolentino MC 9 20069 38545
San Ginesio MC 10 3498 42043
Camerino MC 12 6974 49017
Colmurano MC 12 1263 50280
Ripe San Ginesio MC 13 852 51132
Castelraimondo MC 14 4587 55719
Fiastra MC 14 559 56278
Acquacanina MC 14 121 56399
Gualdo MC 14 815 57214
Pievebovigliana MC 14 866 58080
Urbisaglia MC 15 2628 60708
Gagliole MC 15 620 61328
Sarnano MC 15 3264 64592
Muccia MC 16 915 65507
Fiordimonte MC 16 202 65709
Sant'Angelo in Pontano MC 17 1436 67145
Loro Piceno MC 17 2401 69546
Pollenza MC 17 6618 76164
Pieve Torina MC 18 1458 77622
Bolognola MC 18 142 77764
Pioraco MC 18 1134 78898
Treia MC 19 9403 88301
Matelica MC 20 9981 98282

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km E of Foligno (57155 inhabitants)
57 Km SW of Ancona (100861 inhabitants)
67 Km E of Perugia (166134 inhabitants)
68 Km NW of Teramo (54892 inhabitants)
78 Km S of Fano (60888 inhabitants)
80 Km NE of Terni (111501 inhabitants)
87 Km S of Pesaro (94582 inhabitants)
91 Km N of L'Aquila (69753 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 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
Md 1.4 2021-09-21
00:22:39
43.1552 13.2082 23 2021-09-21
01:25:20
Sala Sismica INGV-Roma 95679671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-21 00:22:39 ± 0.14
Latitude 43.1552 ± 0.0063
Longitude 13.2082 ± 0.0074
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95679671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 691
Semi-minor axis of confidence ellipse (meter) 468
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 37
Circular confidence region, given by single value of horizontal uncertainty (meter) 690
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 156
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.60614
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 12
Magnitude information

Md:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 5
Type of magnitude Md
Reference to an origin 95679671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-21 01:25:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CH.BERNI.HHZ. 2021-09-21T00:23:54.85 3.0 undecidable manual Pg 14.12 0
IV.RESU.HHZ. 2021-09-21T00:23:37.86 3.0 undecidable manual Pn 0.63 0
IV.MCRV.HHZ. 2021-09-21T00:23:21.95 3.0 undecidable manual Sn 1.79 0
IV.TERO.HNE. 2021-09-21T00:23:00.26 0.3 undecidable manual S 151 0.6061 102 0.38 65
IV.T1299.EHN. 2021-09-21T00:22:57.66 0.3 undecidable manual S 174 0.5234 104 0.16 69
IV.SMA1.EHE. 2021-09-21T00:22:57.67 0.3 undecidable manual S 170 0.5324 104 -0.09 69
IV.NRCA.HHZ. 2021-09-21T00:22:52.05 0.3 undecidable manual S 192 0.3283 115 0.01 73
IV.SMA1.EHE. 2021-09-21T00:22:50.15 0.6 undecidable manual P 170 0.5324 104 0.26 45
IV.MMO1.EHZ. 2021-09-21T00:22:50.37 0.3 undecidable manual S 161 0.2698 120 -0.13 72
IV.MF5.EHZ. 2021-09-21T00:22:50.38 0.3 undecidable manual S 132 0.2482 123 0.43 69
IV.TERO.HNE. 2021-09-21T00:22:50.93 0.3 undecidable manual P 151 0.6061 102 -0.18 66
IV.T1299.EHN. 2021-09-21T00:22:49.70 0.6 undecidable manual P 174 0.5234 104 -0.04 46
IV.SNTG.HNZ. 2021-09-21T00:22:49.61 0.3 undecidable manual S 297 0.2185 127 0.37 69
IV.EL6.EHN. 2021-09-21T00:22:48.84 0.3 undecidable manual S 336 0.1907 131 0.25 71
IV.MML1.HNE. 2021-09-21T00:22:48.76 0.3 undecidable manual S 256 0.1772 134 0.46 68
IV.GUMA.HNE. 2021-09-21T00:22:47.61 0.3 undecidable manual S 135 0.1313 143 0.22 73
IV.CSP1.EHZ. 2021-09-21T00:22:46.29 0.3 undecidable manual S 182 0.063 161 -0.15 75
IV.NRCA.HHZ. 2021-09-21T00:22:46.72 0.1 undecidable manual P 192 0.3283 115 0.13 95
IV.MF5.EHZ. 2021-09-21T00:22:45.46 0.1 undecidable manual P 132 0.2482 123 0.08 98
IV.PF6.EHE. 2021-09-21T00:22:45.73 0.3 undecidable manual S 210 0.0198 174 -0.42 72
IV.MMO1.EHZ. 2021-09-21T00:22:45.34 0.1 undecidable manual P 161 0.2698 120 -0.35 92
IV.MML1.HNE. 2021-09-21T00:22:44.20 0.1 undecidable manual P 256 0.1772 134 -0.22 97
IV.EL6.EHN. 2021-09-21T00:22:44.60 0.1 undecidable manual P 336 0.1907 131 0.01 100
IV.SNTG.HNZ. 2021-09-21T00:22:44.88 0.1 undecidable manual P 297 0.2185 127 -0.09 99
IV.GUMA.HNE. 2021-09-21T00:22:43.71 0.1 undecidable manual P 135 0.1313 143 -0.19 98
IV.CSP1.EHZ. 2021-09-21T00:22:43.20 0.1 undecidable manual P 182 0.063 161 -0.15 100
IV.PF6.EHE. 2021-09-21T00:22:42.93 0.1 undecidable manual P 210 0.0198 174 -0.25 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MMO1.EHZ. Md:1.2 9 END duration s
IV.MF5.EHZ. Md:1.2 8 END duration s
IV.TERO.HNE. Md:1.7 14 END duration s
IV.NRCA.HHZ. Md:1.3 9 END duration s
IV.SMA1.EHE. Md:1.6 12 END duration s
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