Earthquake with magnitude of ML 0.7 on date 23-09-2021 and time 14:34:58 (Italy) in region 6 km E Gualdo Tadino (PG)

A magnitude ML 0.7 earthquake occured in region: 6 km E Gualdo Tadino (PG), on

  • 23-09-2021 12:34:58 (UTC)
  • 23-09-2021 14:34:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.246, 12.857 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Gualdo Tadino PG 6 15208 15208
Esanatoglia MC 7 2034 17242
Fiuminata MC 9 1402 18644
Fossato di Vico PG 9 2840 21484
Fabriano AN 11 31480 52964
Matelica MC 13 9981 62945
Pioraco MC 13 1134 64079
Sigillo PG 13 2404 66483
Sefro MC 13 422 66905
Cerreto d'Esi AN 13 3817 70722
Nocera Umbra PG 16 5839 76561
Castelraimondo MC 17 4587 81148
Gagliole MC 17 620 81768
Costacciaro PG 17 1216 82984

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NE of Foligno (57155 inhabitants)
41 Km E of Perugia (166134 inhabitants)
68 Km SW of Ancona (100861 inhabitants)
68 Km S of Fano (60888 inhabitants)
74 Km S of Pesaro (94582 inhabitants)
78 Km N of Terni (111501 inhabitants)
83 Km E of Arezzo (99543 inhabitants)
94 Km S of Rimini (147750 inhabitants)
95 Km NW of Teramo (54892 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
ML 0.7 2021-09-23
12:34:58
43.2465 12.857 13 2021-09-23
12:55:48
Sala Sismica INGV-Roma 95786091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-23 12:34:58 ± 0.06
Latitude 43.2465 ± 0.0027
Longitude 12.8570 ± 0.0037
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 95786091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 338
Semi-minor axis of confidence ellipse (meter) 150
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 219
Circular confidence region, given by single value of horizontal uncertainty (meter) 340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.25001
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 95786091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-23 12:55:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.LSD.HHZ. 2021-09-23T12:36:46.41 3.0 undecidable manual Sn 0.36 0
IV.MCRV.HHZ. 2021-09-23T12:36:39.86 3.0 undecidable manual Sg 12.18 0
MN.VAE.HHZ. 2021-09-23T12:36:23.39 3.0 negative manual Pn -0.22 0
IV.CET2.HHZ. 2021-09-23T12:36:18.78 3.0 undecidable manual Pg 15.04 0
SL.LJU.BHZ. 2021-09-23T12:36:12.62 3.0 undecidable manual Sn 0.07 0
OT.OT05.EHZ. 2021-09-23T12:36:10.69 3.0 undecidable manual Sn -6.34 0
IV.TST01.HHZ. 2021-09-23T12:36:02.16 3.0 undecidable manual Sg 2.04 0
IV.ZEN8.EHZ. 2021-09-23T12:35:54.14 3.0 undecidable manual Sn -6.59 0
IV.BOZZ.EHZ. 2021-09-23T12:35:52.43 3.0 undecidable manual Sg -0.65 0
IV.VVLD.HHZ. 2021-09-23T12:35:48.64 3.0 undecidable manual Sn -1.61 0
CH.DAVOX.HHZ. 2021-09-23T12:35:47.75 3.0 positive manual Pn 0.45 0
IV.SARZ.HHZ. 2021-09-23T12:35:38.83 3.0 negative manual Pn 2.82 0
IV.IOCA.HHZ. 2021-09-23T12:35:37.03 3.0 positive manual Pn -2.06 0
ST.RONC.EHZ. 2021-09-23T12:35:32.97 3.0 negative manual Pn -1.29 0
MN.TRI.HHZ. 2021-09-23T12:35:28.20 3.0 negative manual Pn -0.58 0
IV.MURB.HNE. 2021-09-23T12:35:08.32 0.3 undecidable manual S 274 0.2428 96 0.46 66
IV.CESI.HHZ. 2021-09-23T12:35:07.56 0.6 undecidable manual S 172 0.2437 96 -0.35 44
IV.ASSB.HHZ. 2021-09-23T12:35:07.88 0.3 undecidable manual S 215 0.25 96 -0.2 69
IV.EL6.EHZ. 2021-09-23T12:35:06.83 0.3 undecidable manual S 65 0.1961 100 0.32 70
IV.SSFR.HNE. 2021-09-23T12:35:06.40 0.1 undecidable manual S 344 0.197 100 -0.14 95
IV.ATSC.EHE. 2021-09-23T12:35:06.88 0.3 undecidable manual S 325 0.2167 98 -0.22 70
IV.MML1.EHZ. 2021-09-23T12:35:05.41 0.3 undecidable manual S 148 0.1574 106 0.04 73
IV.ATCC.HNN. 2021-09-23T12:35:05.73 0.1 undecidable manual S 249 0.17 104 0 98
IV.ATSC.EHE. 2021-09-23T12:35:03.20 0.1 undecidable manual P 325 0.2167 98 -0.14 94
IV.EL6.EHZ. 2021-09-23T12:35:03.18 0.1 undecidable manual P 65 0.1961 100 0.18 95
IV.MURB.HNE. 2021-09-23T12:35:03.85 0.1 undecidable manual P 274 0.2428 96 0.07 96
IV.CESI.HHZ. 2021-09-23T12:35:03.71 0.3 undecidable manual P 172 0.2437 96 -0.09 70
IV.ASSB.HHZ. 2021-09-23T12:35:03.92 0.3 undecidable manual P 215 0.25 96 0.02 72
IV.ATCC.HNN. 2021-09-23T12:35:02.61 0.1 undecidable manual P 249 0.17 104 0.06 98
IV.MML1.EHZ. 2021-09-23T12:35:02.36 0.1 undecidable manual P 148 0.1574 106 0.02 97
IV.LMD.HHZ. 2021-09-23T12:35:02.73 3.0 positive manual P -2.26 0
IV.SSFR.HNE. 2021-09-23T12:35:02.95 0.1 undecidable manual P 344 0.197 100 -0.06 96
IV.SNTG.HHZ. 2021-09-23T12:35:02.88 0.3 undecidable manual S 82 0.0612 144 -0.15 72
IV.SNTG.HHZ. 2021-09-23T12:35:01.08 0.1 undecidable manual P 82 0.0612 144 0.09 100
IV.CRE.HHZ. 2021-09-23T12:34:57.01 3.0 positive manual P -0.76 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SNTG.HHN. ML:0.7 6.322846E-5 0.096 AML other m 2021-09-23T12:35:03.48
IV.SNTG.HHE. ML:0.8 7.438511E-5 0.1024 AML other m 2021-09-23T12:35:03.46
IV.SARZ.HHN. ML:3.6 0.00031851475 0.1024 AML other m 2021-09-23T12:35:46.84
IV.VVLD.HHE. ML:2 4.405E-5 0.08 AML other m 2021-09-23T12:35:49.29
IV.VVLD.HHN. ML:2 4.395E-5 0.1 AML other m 2021-09-23T12:35:58.50
IV.SNTG.HNE. ML:0.7 6.170107E-5 0.0896 AML other m 2021-09-23T12:35:03.86
IV.SNTG.HNN. ML:0.8 8.3677105E-5 0.128 AML other m 2021-09-23T12:35:03.32
IV.MML1.EHE. ML:0.6 2.7597215E-5 0.1792 AML other m 2021-09-23T12:35:06.09
IV.MML1.EHN. ML:0.6 3.13278E-5 0.1792 AML other m 2021-09-23T12:35:06.28
IV.CESI.HHE. ML:0.7 2.6549155E-5 0.2048 AML other m 2021-09-23T12:35:07.95
IV.CESI.HHN. ML:0.5 1.6396396E-5 0.16 AML other m 2021-09-23T12:35:08.49
IV.ASSB.HHE. ML:0.6 2.063985E-5 0.0768 AML other m 2021-09-23T12:35:09.13
IV.ASSB.HHN. ML:0.8 3.2247825E-5 0.1024 AML other m 2021-09-23T12:35:09.08
IV.SARZ.HNE. ML:3.6 0.00031310315 0.0832 AML other m 2021-09-23T12:35:46.26
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