Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 24-02-2021 and time 05:22:39 (UTC) in region 2 km SW Caldarola (MC)

A magnitude ML 1.3 earthquake occured in region: 2 km SW Caldarola (MC), on

  • 24-02-2021 05:22:39 (UTC)
  • 24-02-2021 06:22:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.12, 13.22 at 13 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.

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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
Cessapalombo MC 4 512 2335
Camporotondo di Fiastrone MC 4 563 2898
Belforte del Chienti MC 5 1886 4784
Serrapetrona MC 7 966 5750
San Ginesio MC 8 3498 9248
Acquacanina MC 11 121 9369
Fiastra MC 11 559 9928
Tolentino MC 11 20069 29997
Gualdo MC 12 815 30812
Sarnano MC 12 3264 34076
Colmurano MC 12 1263 35339
Camerino MC 12 6974 42313
Ripe San Ginesio MC 12 852 43165
San Severino Marche MC 12 12726 55891
Pievebovigliana MC 13 866 56757
Fiordimonte MC 14 202 56959
Bolognola MC 14 142 57101
Sant'Angelo in Pontano MC 15 1436 58537
Muccia MC 15 915 59452
Urbisaglia MC 15 2628 62080
Pieve Torina MC 16 1458 63538
Castelraimondo MC 16 4587 68125
Loro Piceno MC 17 2401 70526
Gagliole MC 18 620 71146
Penna San Giovanni MC 18 1108 72254
Pollenza MC 19 6618 78872
Amandola FM 19 3629 82501

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km E of Foligno (57155 inhabitants)
60 Km SW of Ancona (100861 inhabitants)
65 Km NW of Teramo (54892 inhabitants)
67 Km E of Perugia (166134 inhabitants)
78 Km NE of Terni (111501 inhabitants)
82 Km S of Fano (60888 inhabitants)
87 Km N of L'Aquila (69753 inhabitants)
91 Km S of Pesaro (94582 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 1.3 2021-02-24
05:22:39		 43.12 13.22 13 2021-02-24
05:28:31		 Sala Sismica INGV-Roma 87432611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-24 05:22:39 ± 0.15
Latitude 43.12 ± 0.01
Longitude 13.22 ± 0.01
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87432611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 746
Semi-minor axis of confidence ellipse (meter) 391
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 184
Circular confidence region, given by single value of horizontal uncertainty (meter) 750
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.49912
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 87432611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-24 05:28:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.APEC.HHZ. 2021-02-24T05:23:04.78 3.0 undecidable manual S -0.31 0
IV.SMA1.EHZ. 2021-02-24T05:22:56.80 0.3 undecidable manual S 170 0.4991 92 0.15 67
IV.MNTT.EHZ. 2021-02-24T05:22:50.90 0.3 undecidable manual S 102 0.2815 96 0.69 58
IV.CESI.HHZ. 2021-02-24T05:22:50.33 0.1 undecidable manual S 243 0.2581 97 0.81 78
IV.NRCA.HHZ. 2021-02-24T05:22:50.81 0.1 undecidable manual S 195 0.2995 95 0.08 94
IV.MMO1.EHZ. 2021-02-24T05:22:48.58 0.1 undecidable manual S 161 0.2365 98 -0.31 91
IV.MF5.EHZ. 2021-02-24T05:22:48.48 0.3 undecidable manual S 127 0.2212 99 0.03 72
IV.SMA1.EHZ. 2021-02-24T05:22:48.67 0.3 undecidable manual P 170 0.4991 92 -0.69 58
IV.MC2.EHZ. 2021-02-24T05:22:48.52 0.1 undecidable manual S 186 0.2122 100 0.34 91
IV.ARVD.HHZ. 2021-02-24T05:22:48.04 3.0 undecidable manual P 0.14 0
IV.EL6.EHZ. 2021-02-24T05:22:48.47 0.1 undecidable manual S 338 0.223 99 -0.03 96
IV.MNTT.EHZ. 2021-02-24T05:22:46.40 0.1 undecidable manual P 102 0.2815 96 0.76 76
IV.CESI.HHZ. 2021-02-24T05:22:45.31 0.1 undecidable manual P 243 0.2581 97 0.07 95
IV.NRCA.HHZ. 2021-02-24T05:22:45.66 0.1 undecidable manual P 195 0.2995 95 -0.28 90
IV.GUMA.HHZ. 2021-02-24T05:22:45.10 0.1 undecidable manual S 125 0.1034 125 -0.07 98
IV.MC2.EHZ. 2021-02-24T05:22:44.28 0.1 undecidable manual P 186 0.2122 100 -0.19 94
IV.CSP1.EHZ. 2021-02-24T05:22:44.06 0.1 undecidable manual S 199 0.0324 160 0.18 99
IV.EL6.EHZ. 2021-02-24T05:22:44.30 0.1 undecidable manual P 338 0.223 99 -0.35 90
IV.MMO1.EHZ. 2021-02-24T05:22:44.36 0.1 undecidable manual P 161 0.2365 98 -0.52 87
IV.MF5.EHZ. 2021-02-24T05:22:44.40 0.1 undecidable manual P 127 0.2212 99 -0.22 93
IV.CSP1.EHZ. 2021-02-24T05:22:42.00 0.1 undecidable manual P 199 0.0324 160 0.02 100
IV.GUMA.HHZ. 2021-02-24T05:22:42.45 0.1 undecidable manual P 125 0.1034 125 -0.28 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GUMA.HHE. ML:1.3 0.000198 0.22 AML other m 2021-02-24T05:22:45.27
IV.GUMA.HHN. ML:1.2 0.000159 0.3 AML other m 2021-02-24T05:22:45.35
IV.NRCA.HHN. ML:1.3 8.08E-5 0.62 AML other m 2021-02-24T05:22:51.98
IV.NRCA.HHE. ML:1.3 9.2E-5 0.18 AML other m 2021-02-24T05:22:52.15
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download