Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 22-09-2021 and time 10:05:53 (Italy) in region 9 km N Monte Sant'Angelo (FG)

A magnitude ML 1.4 earthquake occured in region: 9 km N Monte Sant'Angelo (FG), on

  • 22-09-2021 08:05:53 (UTC)
  • 22-09-2021 10:05:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7850, 15.9400 at 22 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Monte Sant'Angelo FG 9 12657 12657
Carpino FG 10 4182 16839
Mattinata FG 12 6310 23149
Vico del Gargano FG 13 7766 30915
Ischitella FG 14 4432 35347
Cagnano Varano FG 15 7330 42677
Rodi Garganico FG 17 3693 46370
Manfredonia FG 17 57279 103649
Peschici FG 19 4521 108170
San Giovanni Rotondo FG 20 27184 135354

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km N of Manfredonia (57279 inhabitants)
48 Km E of San Severo (53905 inhabitants)
49 Km NE of Foggia (151991 inhabitants)
58 Km N of Cerignola (58396 inhabitants)
59 Km NW of Barletta (94814 inhabitants)
69 Km NW of Andria (100440 inhabitants)
69 Km NW of Trani (56217 inhabitants)
76 Km NW of Bisceglie (55422 inhabitants)
85 Km NW of Molfetta (59874 inhabitants)
98 Km NW of Bitonto (55540 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.4 2021-09-22
08:05:53		 41.7853 15.9402 22 2022-03-30
13:04:12		 Bollettino Sismico Italiano INGV 96852031
Reviewed
Rev100 		ML 1.4 2021-09-22
08:05:53		 41.7828 15.9433 22 2021-09-22
08:17:29		 Sala Sismica INGV-Roma 95728511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-22 08:05:53 ± 0.09
Latitude 41.7853 ± 0.0045
Longitude 15.9402 ± 0.0048
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96852031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 507
Semi-minor axis of confidence ellipse (meter) 167
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 331
Circular confidence region, given by single value of horizontal uncertainty (meter) 510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.07644
Epicentral distance of station farthest from the epicenter (degree) 1.00904
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 96852031
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-21 18:26:16

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 95728511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-22 08:17:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.AMUR.HHZ. 2021-09-22T08:06:12.63 1.0 undecidable manual P 150 111.999 96 0.26 20
OT.OT06.EHZ. 2021-09-22T08:06:04.90 0.6 undecidable manual S 249 30.6471 117 -0.06 48
OT.OT04.EHE. 2021-09-22T08:06:04.69 0.6 undecidable manual S 256 30.6471 117 -0.26 46
OT.OT05.EHZ. 2021-09-22T08:06:04.69 0.3 undecidable manual S 244 31.2465 117 -0.41 67
IV.TREM.HHN. 2021-09-22T08:06:03.35 0.6 undecidable manual P 317 51.6039 105 0.17 46
OT.OT07.EHE. 2021-09-22T08:06:03.75 0.6 undecidable manual S 225 25.752 123 -0.08 49
OT.OT13.EHZ. 2021-09-22T08:06:02.78 0.3 undecidable manual S 62 22.4553 127 -0.31 69
IV.SGRT.HHZ. 2021-09-22T08:06:01.94 0.3 undecidable manual S 258 16.5723 137 0 75
OT.OT14.EHZ. 2021-09-22T08:06:01.17 0.3 undecidable manual S 347 12.6762 145 -0.1 73
OT.OT12.EHZ. 2021-09-22T08:06:01.94 0.3 undecidable manual S 189 17.2716 136 -0.11 74
OT.OT05.EHZ. 2021-09-22T08:06:00.04 0.1 undecidable manual P 244 31.2465 117 -0.2 93
IV.APRC.HHZ. 2021-09-22T08:06:00.60 0.1 positive manual P 265 33.0447 115 0.12 95
IV.MSAG.HHZ. 2021-09-22T08:06:00.88 0.3 undecidable manual S 197 8.4804 155 0.16 73
OT.OT06.EHZ. 2021-09-22T08:06:00.19 0.1 undecidable manual P 249 30.6471 117 0.03 97
OT.OT04.EHE. 2021-09-22T08:06:00.17 0.1 undecidable manual P 256 30.6471 117 0.02 97
OT.OT07.EHE. 2021-09-22T08:05:59.50 0.1 undecidable manual P 225 25.752 123 -0.01 98
OT.OT13.EHZ. 2021-09-22T08:05:59.02 0.1 undecidable manual P 62 22.4553 127 -0.06 97
OT.OT03.EHE. 2021-09-22T08:05:59.59 0.1 undecidable manual P 251 25.3524 123 0.14 95
OT.OT14.EHZ. 2021-09-22T08:05:58.07 0.1 undecidable manual P 347 12.6762 145 0.04 100
OT.OT12.EHZ. 2021-09-22T08:05:58.56 0.1 undecidable manual P 189 17.2716 136 0.08 97
IV.SGRT.HHZ. 2021-09-22T08:05:58.66 0.1 undecidable manual P 258 16.5723 137 0.25 95
IV.MSAG.HHZ. 2021-09-22T08:05:57.90 0.1 undecidable manual P 197 8.4804 155 0.19 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MSAG.HHN. ML:1.2 0.000117322005 0.096 AML other m 2021-09-22T08:06:01.63
IV.MSAG.HNN. ML:1.6 0.0002614627 0.1152 AML other m 2021-09-22T08:06:01.64
IV.MSAG.HNE. ML:1.3 0.00013699875 0.16 AML other m 2021-09-22T08:06:01.92
IV.MSAG.HHE. ML:0.9 0.00005417010999999999 0.16 AML other m 2021-09-22T08:06:01.92
OT.OT12.EHE. ML:1.3 0.00011549999999999999 1.76 AML other m 2021-09-22T08:06:01.10
OT.OT12.EHN. ML:1.2 0.00008395287 0.1216 AML other m 2021-09-22T08:06:03.15
IV.SGRT.HHN. ML:1.2 0.00008518475 0.1024 AML other m 2021-09-22T08:06:03.24
IV.SGRT.HHE. ML:1.2 0.00010195359500000001 0.1984 AML other m 2021-09-22T08:06:03.25
OT.OT13.EHE. ML:1.8 0.0003055 0.2 AML other m 2021-09-22T08:06:03.90
OT.OT13.EHN. ML:1.9 0.00036808975 0.2176 AML other m 2021-09-22T08:06:04.55
IV.APRC.HHE. ML:1.8 0.00024176009999999997 0.1408 AML other m 2021-09-22T08:06:05.63
IV.APRC.HHN. ML:1.8 0.00020398225000000002 0.1024 AML other m 2021-09-22T08:06:06.28
OT.OT05.EHN. ML:1.2 0.00006395108 0.0768 AML other m 2021-09-22T08:06:05.19
OT.OT05.EHE. ML:0.1 0.000003933278 0.1024 AML other m 2021-09-22T08:06:06.14
IV.APRC.HNE. ML:1.8 0.0002259791 0.1792 AML other m 2021-09-22T08:06:05.63
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