Earthquake with magnitude of ML 1.1 on date 31-05-2021 and time 06:02:41 (UTC) in region 3 km W Campotosto (AQ)

A magnitude ML 1.1 earthquake occured in region: 3 km W Campotosto (AQ), on

  • 31-05-2021 06:02:41 (UTC)
  • 31-05-2021 08:02:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5560, 13.3400 at 11 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Campotosto AQ 3 542 542
Capitignano AQ 5 665 1207
Montereale AQ 9 2581 3788
Amatrice RI 9 2657 6445
Crognaleto TE 12 1297 7742
Barete AQ 13 737 8479
Pizzoli AQ 14 4326 12805
Cagnano Amiterno AQ 14 1369 14174
Cortino TE 16 656 14830
Fano Adriano TE 16 296 15126
Cittareale RI 16 482 15608
Accumoli RI 17 667 16275
Borbona RI 18 617 16892
Pietracamela TE 18 271 17163

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km N of L'Aquila (69753 inhabitants)
32 Km W of Teramo (54892 inhabitants)
57 Km E of Terni (111501 inhabitants)
67 Km W of Montesilvano (53738 inhabitants)
68 Km SE of Foligno (57155 inhabitants)
72 Km W of Chieti (51815 inhabitants)
72 Km W of Pescara (121014 inhabitants)
79 Km NE of Tivoli (56533 inhabitants)
80 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km SE of Perugia (166134 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 1.1 2021-05-31
06:02:41
42.5562 13.3403 11 2021-12-29
11:12:05
Bollettino Sismico Italiano INGV 91389721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-31 06:02:41 ± 0.05
Latitude 42.5562 ± 0.0036
Longitude 13.3403 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91389721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 383
Semi-minor axis of confidence ellipse (meter) 290
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 202
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.32286
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 91389721
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-16 11:01:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SENA.HHZ. 2021-05-31T06:04:22.17 3.0 undecidable manual Sg 11.72 0
IV.CADC.EHZ. 2021-05-31T06:04:12.54 3.0 undecidable manual Sg 12.68 0
IV.ESAL.HHZ. 2021-05-31T06:03:50.31 3.0 positive manual Pn -4.29 0
IV.ZEN8.EHZ. 2021-05-31T06:03:50.12 3.0 undecidable manual Sn -7.51 0
GU.BLANC.HHZ. 2021-05-31T06:03:48.02 3.0 undecidable manual Pn -1.88 0
IV.MCPD.HHZ. 2021-05-31T06:03:48.26 3.0 negative manual Pn -0.3 0
IV.SBPO.HNZ. 2021-05-31T06:03:46.76 3.0 undecidable manual Sg 2.98 0
IV.PTRJ.HNZ. 2021-05-31T06:03:34.86 3.0 undecidable manual Sg 3.3 0
IV.SARZ.HHZ. 2021-05-31T06:03:26.24 3.0 undecidable manual Pn -0.28 0
IV.RIBO.EHZ.01 2021-05-31T06:03:12.35 3.0 undecidable manual Sg -3.1 0
IV.PAOL.HHZ. 2021-05-31T06:03:07.51 3.0 undecidable manual Pn -3.47 0
IV.NRCA.HHZ. 2021-05-31T06:02:53.66 0.3 undecidable manual S 329 35.8419 50 -0.05 72
IV.FIR.HHZ. 2021-05-31T06:02:51.82 3.0 undecidable manual Pn -7.19 0
IV.TERO.HHZ. 2021-05-31T06:02:50.08 0.6 undecidable manual S 71 22.755 50 -0.14 48
IV.LNSS.HNZ. 2021-05-31T06:02:50.74 0.3 undecidable manual S 282 25.0527 50 -0.08 73
IV.MTRA.EHE. 2021-05-31T06:02:49.98 0.6 undecidable manual S 12 22.755 50 -0.22 48
IV.GIGS.HHN. 2021-05-31T06:02:49.88 0.6 undecidable manual S 121 22.1556 50 -0.18 48
IV.NRCA.HHZ. 2021-05-31T06:02:48.80 0.1 undecidable manual P 329 35.8419 50 0.19 94
IV.LNSS.HNZ. 2021-05-31T06:02:47.04 0.3 undecidable manual P 282 25.0527 50 0.09 73
IV.SMA1.EHZ. 2021-05-31T06:02:46.33 0.6 undecidable manual S 357 8.2806 143 -0.08 50
IV.T1299.HNN. 2021-05-31T06:02:46.64 0.3 undecidable manual S 331 9.879 138 -0.13 74
IV.RM33.EHZ. 2021-05-31T06:02:46.88 0.3 undecidable manual S 243 11.5773 134 -0.29 72
IV.MTRA.EHE. 2021-05-31T06:02:46.48 0.1 undecidable manual P 12 22.755 50 -0.11 97
IV.TERO.HHZ. 2021-05-31T06:02:46.76 0.3 undecidable manual P 71 22.755 50 0.16 72
IV.GIGS.HHN. 2021-05-31T06:02:46.55 0.3 undecidable manual P 121 22.1556 50 0.04 74
IV.CAMP.HHE. 2021-05-31T06:02:45.80 0.3 undecidable manual S 112 6.0939 151 -0.19 74
IV.SMA1.EHZ. 2021-05-31T06:02:44.62 0.3 positive manual P 357 8.2806 143 0.22 73
IV.T1299.HNN. 2021-05-31T06:02:44.69 0.1 undecidable manual P 331 9.879 138 0.08 100
IV.RM33.EHZ. 2021-05-31T06:02:44.97 0.1 positive manual P 243 11.5773 134 0.13 99
IV.CAMP.HHE. 2021-05-31T06:02:44.33 0.1 undecidable manual P 112 6.0939 151 0.17 99
IV.ARVD.HHZ. 2021-05-31T06:02:43.74 3.0 negative manual P -2.72 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHE. ML:1.2 0.0001545 0.34 AML other m 2021-05-31T06:02:47.11
IV.RM33.EHN. ML:1.2 0.00015900000000000002 0.32 AML other m 2021-05-31T06:02:47.72
IV.NRCA.HHE. ML:1.2 0.0000618 0.42 AML other m 2021-05-31T06:02:55.58
IV.NRCA.HHN. ML:1.0 0.00003705 1.34 AML other m 2021-05-31T06:02:56.99
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