Earthquake 7 km SE Pietralunga (PG), Magnitude ML 1.3, 25 February 2021 time 01:21:18 (Timezone UTC)

A magnitude ML 1.3 earthquake occured in region: 7 km SE Pietralunga (PG), on

25-02-2021 01:21:18 (UTC)
25-02-2021 02:21:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4, 12.5 at 8 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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Display location by

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).

Municipality	Region	Distance (km)	Inhabitants	Cumulative Inhabitants
Pietralunga	PG	7	2111	2111
Gubbio	PG	8	32216	34327
Cantiano	PU	14	2245	36572
Montone	PG	14	1680	38252
Scheggia e Pascelupo	PG	14	1393	39645
Umbertide	PG	17	16681	56326
Costacciaro	PG	18	1216	57542
Apecchio	PU	19	1882	59424

Municipalities with at least 50000 inhabitants

An earthquake occurred to

33 Km N of Perugia (166134 inhabitants)

50 Km E of Arezzo (99543 inhabitants)

52 Km NW of Foligno (57155 inhabitants)

65 Km SW of Fano (60888 inhabitants)

66 Km SW of Pesaro (94582 inhabitants)

74 Km S of Rimini (147750 inhabitants)

85 Km S of Cesena (96758 inhabitants)

86 Km W of Ancona (100861 inhabitants)

94 Km N of Terni (111501 inhabitants)

94 Km E of Siena (53903 inhabitants)

99 Km SE of Forlì (117913 inhabitants)

Recent and historical Seismicity

Not available maps for this sismic event.

Seismic hazard

Not available maps for this sismic event.

Shakemap

Not available maps for this sismic event.

Felt maps

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	2021-02-25 01:21:18	43.4	12.5	8	2021-02-25 01:25:18	Sala Sismica INGV-Roma	87465741

Preferred location and magnitude until now.

Origin information

Origin

Field	Value
Time (UTC)	2021-02-25 01:21:18 ± 0.06
Latitude	43.40 ± 0.00
Longitude	12.50 ± 0.01
Depth (km)	8 ± 1 (from location)
Evaluation mode of Origin	manual
Evaluation status of Origin	reviewed
Version	100 -> SURVEY-INGV
Event type	earthquake
Origin ID	87465741

Uncertainty

Field	Value
Preferred uncertainty description	uncertainty ellipse
Semi-major axis of confidence ellipse (meter)	379
Semi-minor axis of confidence ellipse (meter)	137
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)	63
Circular confidence region, given by single value of horizontal uncertainty (meter)	380
Confidence level of the uncertainty (%)	68

Quality

Field	Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)	78
Number of associated phases, regardless of their use for origin computation	24
Number of defining phases	17
RMS of the travel time residuals of the arrivals used for the origin computation (sec)	0.13
Epicentral distance of station closest to the epicenter (degree)	0
Epicentral distance of station farthest from the epicenter (degree)	0.31296
Number of stations at which the event was observed	21
Number of stations from which data was used for origin computation	14

Magnitude information

ML:1.3

Field	Value
Value	1.3
Uncertainty	0.3
Num. used stations	32
Type of magnitude	ML
Reference to an origin	87465741
Agency	INGV
Autore	Sala Sismica INGV-Roma
Time of creation (UTC)	2021-02-25 01:25:18

Picking and Arrival

SCNL	Time	Uncertainty	Polarity	Evaluation_mode	Phase	Azimuth	Distance	Takeoff_angle	Residual	Weight
IV.CSP1.EHZ.	2021-02-25T01:21:30.32	3.0	positive	manual	P				-0.13	0
IV.MGAB.HHZ.	2021-02-25T01:21:29.76	3.0	undecidable	manual	P				0.06	0
IV.FDMO.HHZ.	2021-02-25T01:21:29.56	3.0	positive	manual	P				-0.17	0
IV.EL6.EHZ.	2021-02-25T01:21:28.96	3.0	positive	manual	P				1.35	0
IV.CAFI.HHZ.	2021-02-25T01:21:26.61	3.0	positive	manual	P				-0.05	0
IV.PARC.HHZ.	2021-02-25T01:21:25.20	0.1	undecidable	manual	P	324	0.313	50	-0.18	93
IV.PE3.EHZ.	2021-02-25T01:21:25.19	1.0	undecidable	manual	P	0	0.2986	104	0.11	24
IV.ARVD.HHZ.	2021-02-25T01:21:25.65	3.0	positive	manual	P				-0.02	0
IV.MURB.HHZ.	2021-02-25T01:21:24.31	0.3	undecidable	manual	S	171	0.1358	118	0.14	73
IV.MPAG.EHZ.	2021-02-25T01:21:24.97	0.6	positive	manual	P	39	0.3013	104	-0.15	47
IV.FRON.EHZ.	2021-02-25T01:21:23.16	0.1	positive	manual	P	54	0.2059	110	0.05	97
IV.ATCC.EHZ.	2021-02-25T01:21:23.79	0.6	undecidable	manual	P	153	0.2365	107	0.05	48
IV.BADI.EHZ.	2021-02-25T01:21:23.29	0.3	undecidable	manual	P	302	0.214	109	0.03	73
IV.NARO.HHZ.	2021-02-25T01:21:23.39	0.1	positive	manual	P	16	0.2221	108	-0.06	97
IV.SSFR.HHZ.	2021-02-25T01:21:23.24	3.0	positive	manual	P				0.02	0
IV.FOSV.EHZ.	2021-02-25T01:21:23.29	1.0	negative	manual	P	118	0.2185	109	-0.07	24
IV.PIEI.HHZ.	2021-02-25T01:21:22.05	0.3	positive	manual	P	12	0.1421	117	0.27	71
IV.ATPI.EHZ.	2021-02-25T01:21:22.46	0.3	undecidable	manual	S	309	0.0863	130	-0.14	73
IV.APEC.HHZ.	2021-02-25T01:21:22.55	0.1	positive	manual	P	341	0.17	113	0.19	95
IV.ATMI.HHZ.	2021-02-25T01:21:22.33	1.0	negative	manual	P	249	0.1763	113	-0.16	24
IV.ATFO.HHZ.	2021-02-25T01:21:21.75	0.3	undecidable	manual	S	119	0.063	139	-0.22	72
IV.MURB.HHZ.	2021-02-25T01:21:21.78	0.6	negative	manual	P	171	0.1358	118	0.12	49
IV.ATFO.HHZ.	2021-02-25T01:21:20.34	0.1	positive	manual	P	119	0.063	139	-0.05	100
IV.ATPI.EHZ.	2021-02-25T01:21:20.76	1.0	positive	manual	P	309	0.0863	130	0.01	25

Station Magnitude and Amplitude

SCNL	mag	Generic_amplitude	Period	Type	Category	Unit	Time_window_reference
IV.ATFO.HHE.	ML:1.7	0.0008185	1.74	AML	other	m	2021-02-25T01:21:22.07
IV.ATFO.HHN.	ML:1.7	0.000891	0.26	AML	other	m	2021-02-25T01:21:22.25
IV.ATPI.EHN.	ML:1.3	0.0002905	0.36	AML	other	m	2021-02-25T01:21:22.56
IV.ATPI.EHE.	ML:1.1	0.0001855	0.42	AML	other	m	2021-02-25T01:21:23.17
IV.MURB.HHN.	ML:1.7	0.000532	1.16	AML	other	m	2021-02-25T01:21:25.19
IV.PIEI.HHN.	ML:1.4	0.0002465	0.22	AML	other	m	2021-02-25T01:21:25.58
IV.MURB.HHE.	ML:1.8	0.00064	0.18	AML	other	m	2021-02-25T01:21:25.51
IV.PIEI.HHE.	ML:1.7	0.000451	0.16	AML	other	m	2021-02-25T01:21:25.69
IV.ATMI.HHN.	ML:1.2	0.0001255	1.2	AML	other	m	2021-02-25T01:21:26.25
IV.APEC.HHE.	ML:1.3	0.000162	0.28	AML	other	m	2021-02-25T01:21:26.33
IV.APEC.HHN.	ML:1.4	0.0002045	0.24	AML	other	m	2021-02-25T01:21:26.52
IV.FRON.EHN.	ML:1.2	0.0001135	0.1	AML	other	m	2021-02-25T01:21:27.27
IV.NARO.HHE.	ML:1.1	8.03E-5	0.18	AML	other	m	2021-02-25T01:21:27.48
IV.BADI.EHE.	ML:1.6	0.000234	0.16	AML	other	m	2021-02-25T01:21:27.61
IV.SSFR.HHN.	ML:1.7	0.000306	0.18	AML	other	m	2021-02-25T01:21:27.71
IV.BADI.EHN.	ML:1.6	0.0002665	0.36	AML	other	m	2021-02-25T01:21:27.72
IV.NARO.HHN.	ML:1.2	0.00010165	0.04	AML	other	m	2021-02-25T01:21:27.86
IV.SSFR.HHE.	ML:1.6	0.00026	0.54	AML	other	m	2021-02-25T01:21:28.04
IV.ATCC.EHN.	ML:1.5	0.000187	0.46	AML	other	m	2021-02-25T01:21:28.46
IV.ATCC.EHE.	ML:1.5	0.000198	0.12	AML	other	m	2021-02-25T01:21:28.54
IV.FOSV.EHE.	ML:0.8	4.235E-5	0.56	AML	other	m	2021-02-25T01:21:28.70
IV.ATMI.HHE.	ML:1.3	0.0001615	0.22	AML	other	m	2021-02-25T01:21:29.29
IV.FRON.EHE.	ML:1	5.995E-5	0.44	AML	other	m	2021-02-25T01:21:29.11
IV.FOSV.EHN.	ML:0.9	4.675E-5	1.3	AML	other	m	2021-02-25T01:21:30.75
IV.PARC.HHN.	ML:1	4.73E-5	0.64	AML	other	m	2021-02-25T01:21:32.66
IV.ARVD.HHE.	ML:1	3.59E-5	0.96	AML	other	m	2021-02-25T01:21:32.76
IV.CAFI.HHE.	ML:1	3.535E-5	0.2	AML	other	m	2021-02-25T01:21:32.94
IV.CAFI.HHN.	ML:0.9	2.72E-5	1.64	AML	other	m	2021-02-25T01:21:32.16
IV.ARVD.HHN.	ML:1	3.54E-5	0.94	AML	other	m	2021-02-25T01:21:33.01
IV.PARC.HHE.	ML:1	4.2E-5	0.72	AML	other	m	2021-02-25T01:21:33.51
IV.MGAB.HHE.	ML:1.4	4.28E-5	0.42	AML	other	m	2021-02-25T01:21:40.65
IV.MGAB.HHN.	ML:1.4	4.27E-5	1.32	AML	other	m	2021-02-25T01:21:40.67

TDMT - Time Domain Moment Tensor

Not available TDMT solution for this seismic event.

Focal Mechanism in the area

Not available maps for this sismic event.

Download

Type	Description	Link
QuakeML - small	Event, Origin, FocalMechanism	Download
QuakeML - full	Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude	Download

Earthquake with magnitude of ML 1.3 on date 25-02-2021 and time 01:21:18 (UTC) in region 7 km SE Pietralunga (PG)

Municipalities within 20 km from the epicenter

Municipalities with at least 50000 inhabitants

The earthquake effects in MCS scale as obtained from the compiled questionnaire

Origin

Uncertainty

Quality

ML:1.3