Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 01-04-2023 and time 08:15:23 (UTC) in region 5 km E Rocca Santa Maria (TE)

A magnitude ML 1.4 earthquake occured in region: 5 km E Rocca Santa Maria (TE), on

  • 01-04-2023 08:15:23 (UTC)
  • 01-04-2023 10:15:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7060, 13.5870 at 16 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
Rocca Santa Maria TE 5 537 537
Torricella Sicura TE 8 2641 3178
Valle Castellana TE 8 977 4155
Campli TE 9 7209 11364
Civitella del Tronto TE 10 5116 16480
Teramo TE 11 54892 71372
Cortino TE 11 656 72028
Folignano AP 13 9241 81269
Montorio al Vomano TE 14 8218 89487
Acquasanta Terme AP 16 2916 92403
Maltignano AP 16 2401 94804
Ascoli Piceno AP 16 49407 144211
Sant'Egidio alla Vibrata TE 17 9811 154022
Basciano TE 18 2434 156456
Fano Adriano TE 18 296 156752
Bellante TE 19 7152 163904
Tossicia TE 19 1406 165310
Canzano TE 19 1934 167244
Castellalto TE 19 7513 174757
Ancarano TE 19 1857 176614
Roccafluvione AP 20 2010 178624
Crognaleto TE 20 1297 179921
Penna Sant'Andrea TE 20 1698 181619
Sant'Omero TE 20 5243 186862
Colledara TE 20 2179 189041

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km W of Teramo (54892 inhabitants)
42 Km NE of L'Aquila (69753 inhabitants)
51 Km W of Montesilvano (53738 inhabitants)
58 Km W of Pescara (121014 inhabitants)
62 Km NW of Chieti (51815 inhabitants)
77 Km E of Foligno (57155 inhabitants)
79 Km E of Terni (111501 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 2023-04-01
08:15:23		 42.7065 13.5867 16 2024-03-01
17:18:03		 Bollettino Sismico Italiano INGV 116374721
Reviewed
Rev100 		ML 1.4 2023-04-01
08:15:24		 42.7103 13.5802 15 2023-04-01
08:20:26		 Sala Sismica INGV-Roma 115937401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-01 08:15:23 ± 0.15
Latitude 42.7065 ± 0.0036
Longitude 13.5867 ± 0.0098
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116374721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 589
Semi-minor axis of confidence ellipse (meter) 533
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 257
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 170
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) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.08454
Epicentral distance of station farthest from the epicenter (degree) 0.47574
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 115937401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-01 08:20:26

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 116374721
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-27 08:42:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2023-04-01T08:15:41.07 0.6 undecidable manual S 324 52.8027 97 0.48 43
IV.NRCA.HHZ. 2023-04-01T08:15:37.28 0.3 undecidable manual S 290 40.9257 100 -0.18 71
IV.RM33.EHZ. 2023-04-01T08:15:36.49 0.3 undecidable manual S 234 37.4292 101 -0.05 73
IV.MF5.EHZ. 2023-04-01T08:15:35.95 0.6 undecidable manual S 342 32.8449 103 0.61 43
IV.MMO1.EHZ. 2023-04-01T08:15:34.49 0.3 undecidable manual S 315 30.0477 105 -0.13 72
IV.GIGS.HHN. 2023-04-01T08:15:34.02 0.3 undecidable manual S 182 28.1496 107 -0.1 73
IV.CSP1.EHZ. 2023-04-01T08:15:33.00 0.6 undecidable manual P 324 52.8027 97 -0.56 41
IV.CAMP.HHE. 2023-04-01T08:15:33.11 0.3 undecidable manual S 218 23.8539 111 0.07 73
IV.SMA1.EHZ. 2023-04-01T08:15:32.54 0.3 undecidable manual S 248 22.1556 113 -0.08 75
IV.RM33.EHZ. 2023-04-01T08:15:31.28 0.3 undecidable manual P 234 37.4292 101 0.06 72
IV.NRCA.HHZ. 2023-04-01T08:15:31.65 0.1 undecidable manual P 290 40.9257 100 -0.1 95
IV.MTRA.EHE. 2023-04-01T08:15:31.09 1.0 undecidable manual S 290 16.4724 124 -0.19 25
IV.MMO1.EHZ. 2023-04-01T08:15:30.18 0.6 undecidable manual P 315 30.0477 105 0.06 49
IV.TERO.HHZ. 2023-04-01T08:15:30.00 0.3 undecidable manual S 171 9.3795 143 0.11 76
IV.ASCOL.EHN. 2023-04-01T08:15:30.82 0.6 undecidable manual S 1 16.0728 124 -0.37 46
IV.MF5.EHZ. 2023-04-01T08:15:30.80 0.3 undecidable manual P 342 32.8449 103 0.27 70
IV.GIGS.HHN. 2023-04-01T08:15:29.76 0.3 undecidable manual P 182 28.1496 107 -0.06 73
IV.CAMP.HHE. 2023-04-01T08:15:29.26 0.3 undecidable manual P 218 23.8539 111 0.06 74
IV.MTRA.EHE. 2023-04-01T08:15:28.03 1.0 undecidable manual P 290 16.4724 124 -0.16 25
IV.SMA1.EHZ. 2023-04-01T08:15:28.96 0.1 undecidable manual P 248 22.1556 113 0 100
IV.TERO.HHZ. 2023-04-01T08:15:27.54 0.1 undecidable manual P 171 9.3795 143 0.15 100
IV.ASCOL.EHN. 2023-04-01T08:15:27.91 1.0 undecidable manual P 1 16.0728 124 -0.22 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.3 0.00011899999999999999 0.16 AML other m 2023-04-01T08:15:32.79
IV.SMA1.EHE. ML:1.3 0.0001205 1.78 AML other m 2023-04-01T08:15:33.05
IV.NRCA.HHE. ML:1.4 0.00008395 0.1 AML other m 2023-04-01T08:15:38.34
IV.NRCA.HHN. ML:1.5 0.000102 0.1 AML other m 2023-04-01T08:15:38.48
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