Earthquake with magnitude of ML 0.9 on date 01-04-2020 and time 06:25:35 (Italy) in region 1 km SW Caldarola (MC)

A magnitude ML 0.9 earthquake occured in region: 1 km SW Caldarola (MC), on

  • 01-04-2020 04:25:35 (UTC)
  • 01-04-2020 06:25:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.13, 13.22 at 10 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 1 1823 1823
Camporotondo di Fiastrone MC 4 563 2386
Cessapalombo MC 4 512 2898
Belforte del Chienti MC 4 1886 4784
Serrapetrona MC 6 966 5750
San Ginesio MC 9 3498 9248
Tolentino MC 11 20069 29317
Fiastra MC 11 559 29876
Acquacanina MC 12 121 29997
San Severino Marche MC 12 12726 42723
Camerino MC 12 6974 49697
Gualdo MC 12 815 50512
Colmurano MC 12 1263 51775
Sarnano MC 13 3264 55039
Ripe San Ginesio MC 13 852 55891
Pievebovigliana MC 13 866 56757
Fiordimonte MC 14 202 56959
Muccia MC 15 915 57874
Bolognola MC 15 142 58016
Sant'Angelo in Pontano MC 15 1436 59452
Urbisaglia MC 15 2628 62080
Castelraimondo MC 16 4587 66667
Pieve Torina MC 16 1458 68125
Loro Piceno MC 17 2401 70526
Gagliole MC 17 620 71146
Pollenza MC 19 6618 77764
Penna San Giovanni MC 19 1108 78872
Pioraco MC 19 1134 80006

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km E of Foligno (57155 inhabitants)
60 Km SW of Ancona (100861 inhabitants)
66 Km NW of Teramo (54892 inhabitants)
67 Km E of Perugia (166134 inhabitants)
78 Km NE of Terni (111501 inhabitants)
81 Km S of Fano (60888 inhabitants)
88 Km N of L'Aquila (69753 inhabitants)
90 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
Rev 100 ML 0.9 2020-04-01
04:25:35
43.13 13.22 10 2020-04-01
04:44:39
Sala Sismica INGV-Roma 77746271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-01 04:25:35 ± 0.09
Latitude 43.13 ± 0.00
Longitude 13.22 ± 0.01
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77746271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 885
Semi-minor axis of confidence ellipse (meter) 156
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 890
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 184
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.03867
Epicentral distance of station farthest from the epicenter (degree) 0.24462
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:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 77746271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-01 04:44:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2020-04-01T04:25:45.66 0.6 undecidable manual S 161 0.2446 50 0.1 49
IV.SNTG.HHZ. 2020-04-01T04:25:45.11 0.6 undecidable manual S 302 0.2365 50 -0.21 48
IV.EL6.EHZ. 2020-04-01T04:25:44.74 0.6 undecidable manual S 337 0.2158 113 0.12 49
IV.FDMO.HHZ. 2020-04-01T04:25:41.81 0.6 undecidable manual S 225 0.1322 124 0.04 51
IV.SNTG.HHZ. 2020-04-01T04:25:41.23 0.6 undecidable manual P 302 0.2365 50 0.01 50
IV.MC2.EHZ. 2020-04-01T04:25:41.33 1.0 negative manual P 185 0.2194 112 0.45 23
IV.MMO1.EHZ. 2020-04-01T04:25:41.25 0.1 undecidable manual P 161 0.2446 50 -0.11 98
IV.EL6.EHZ. 2020-04-01T04:25:40.84 0.1 undecidable manual P 337 0.2158 113 0.02 100
IV.FDMO.HHZ. 2020-04-01T04:25:39.36 0.6 positive manual P 225 0.1322 124 0.19 49
IV.CSP1.EHZ. 2020-04-01T04:25:38.95 0.6 undecidable manual S 192 0.0387 157 -0.44 47
IV.CSP1.EHZ. 2020-04-01T04:25:37.87 0.3 negative manual P 192 0.0387 157 0.08 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHN. ML:0.8 0.00010335 0.4 AML other m 2020-04-01T04:25:39.02
IV.FDMO.HHN. ML:0.8 5.87E-5 0.46 AML other m 2020-04-01T04:25:39.42
IV.CSP1.EHE. ML:1 0.000195 0.38 AML other m 2020-04-01T04:25:39.48
IV.FDMO.HHE. ML:1 0.0001095 1.82 AML other m 2020-04-01T04:25:42.97
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