Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 27-02-2024 and time 21:40:24 (Italy) in region 5 km W Posta (RI)

A magnitude ML 1.0 earthquake occured in region: 5 km W Posta (RI), on

  • 27-02-2024 20:40:24 (UTC)
  • 27-02-2024 21:40:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5160, 13.0310 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.

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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
Posta RI 6 694 694
Micigliano RI 7 127 821
Leonessa RI 8 2435 3256
Borbona RI 8 617 3873
Cantalice RI 12 2755 6628
Antrodoco RI 12 2588 9216
Poggio Bustone RI 12 2055 11271
Borgo Velino RI 12 972 12243
Castel Sant'Angelo RI 13 1308 13551
Rivodutri RI 14 1253 14804
Cittareale RI 16 482 15286
Cittaducale RI 16 6828 22114
Morro Reatino RI 16 373 22487
Monteleone di Spoleto PG 16 599 23086
Polino TR 17 233 23319
Cagnano Amiterno AQ 17 1369 24688
Montereale AQ 18 2581 27269
Rieti RI 19 47698 74967
Labro RI 19 374 75341

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Terni (111501 inhabitants)
35 Km NW of L'Aquila (69753 inhabitants)
56 Km SE of Foligno (57155 inhabitants)
57 Km W of Teramo (54892 inhabitants)
63 Km NE of Guidonia Montecelio (88673 inhabitants)
64 Km NE of Tivoli (56533 inhabitants)
77 Km E of Viterbo (67173 inhabitants)
83 Km NE of Roma (2864731 inhabitants)
84 Km SE of Perugia (166134 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
95 Km N of Velletri (53303 inhabitants)
95 Km W of Chieti (51815 inhabitants)
97 Km W of Pescara (121014 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
Reviewed
Rev100 		ML 1.0 2024-02-27
20:40:24		 42.5163 13.0312 13 2024-02-27
20:49:06		 Sala Sismica INGV-Roma 125581701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-27 20:40:24 ± 0.1
Latitude 42.5163 ± 0.0054
Longitude 13.0312 ± 0.0049
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 125581701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 450
Semi-minor axis of confidence ellipse (meter) 361
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 198
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 195
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) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.08633
Epicentral distance of station farthest from the epicenter (degree) 0.32286
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:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 125581701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-02-27 20:49:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2024-02-27T20:40:36.78 0.6 undecidable manual S 11 35.8419 95 0.13 47
IV.SMA1.EHE. 2024-02-27T20:40:34.60 0.3 undecidable manual S 63 27.8499 98 0.06 72
IV.GAVE.EHZ. 2024-02-27T20:40:33.02 0.3 undecidable manual S 330 22.4553 102 -0.1 73
IV.RM33.EHZ. 2024-02-27T20:40:31.09 0.6 undecidable manual S 93 14.9739 116 -0.13 48
IV.NRCA.HHZ. 2024-02-27T20:40:31.37 0.1 positive manual P 11 35.8419 95 -0.19 93
IV.LNSS.HHZ. 2024-02-27T20:40:30.01 0.1 undecidable manual S 4 9.5793 134 -0.03 100
IV.SMA1.EHE. 2024-02-27T20:40:30.41 0.1 undecidable manual P 63 27.8499 98 0.06 96
IV.GAVE.EHZ. 2024-02-27T20:40:29.51 0.1 undecidable manual P 330 22.4553 102 -0.01 98
IV.ARRO.EHZ. 2024-02-27T20:40:29.69 0.6 positive manual P 288 22.755 102 0.12 48
IV.RM33.EHZ. 2024-02-27T20:40:28.47 0.3 negative manual P 93 14.9739 116 0.04 74
IV.LNSS.HHZ. 2024-02-27T20:40:27.86 0.1 undecidable manual P 4 9.5793 134 0.12 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.3 0.00023700000000000001 0.12 AML other m 2024-02-27T20:40:30.17
IV.LNSS.HHN. ML:1.2 0.0001785 0.34 AML other m 2024-02-27T20:40:30.28
IV.RM33.EHE. ML:1.0 0.00009570397 0.1792 AML other m 2024-02-27T20:40:31.40
IV.RM33.EHN. ML:0.8 0.000054542731500000005 0.1024 AML other m 2024-02-27T20:40:31.10
IV.GAVE.EHE. ML:0.9 0.000049052415 0.2048 AML other m 2024-02-27T20:40:34.62
IV.GAVE.EHN. ML:1.0 0.00006042343 0.2176 AML other m 2024-02-27T20:40:33.43
IV.NRCA.HHE. ML:1.0 0.000033025554000000005 0.1024 AML other m 2024-02-27T20:40:37.95
IV.NRCA.HHN. ML:0.7 0.000020076405 0.0768 AML other m 2024-02-27T20:40:37.98
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