Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 04-02-2020 and time 17:31:05 (Italy) in region 4 km NW Rotella (AP)

A magnitude ML 1.9 earthquake occured in region: 4 km NW Rotella (AP), on

  • 04-02-2020 16:31:05 (UTC)
  • 04-02-2020 17:31:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9840, 13.5370 at 27 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
Rotella AP 4 906 906
Montelparo FM 4 778 1684
Force AP 4 1354 3038
Montedinove AP 4 488 3526
Santa Vittoria in Matenano FM 5 1330 4856
Montalto delle Marche AP 6 2122 6978
Monte Rinaldo FM 6 379 7357
Montefalcone Appennino FM 6 424 7781
Monteleone di Fermo FM 7 395 8176
Smerillo FM 8 365 8541
Ortezzano FM 8 774 9315
Castignano AP 9 2796 12111
Monte San Martino MC 10 765 12876
Montottone FM 10 979 13855
Monsampietro Morico FM 10 659 14514
Comunanza AP 10 3166 17680
Monte Vidon Combatte FM 11 433 18113
Palmiano AP 11 196 18309
Servigliano FM 12 2336 20645
Venarotta AP 12 2066 22711
Belmonte Piceno FM 12 646 23357
Penna San Giovanni MC 12 1108 24465
Cossignano AP 12 978 25443
Carassai AP 13 1100 26543
Petritoli FM 14 2335 28878
Offida AP 14 5058 33936
Appignano del Tronto AP 14 1785 35721
Monte Giberto FM 14 801 36522
Roccafluvione AP 14 2010 38532
Amandola FM 15 3629 42161
Falerone FM 15 3337 45498
Ascoli Piceno AP 15 49407 94905
Grottazzolina FM 15 3398 98303
Monte Vidon Corrado FM 16 731 99034
Montegiorgio FM 16 6851 105885
Montefortino FM 17 1178 107063
Ponzano di Fermo FM 17 1674 108737
Sant'Angelo in Pontano MC 17 1436 110173
Magliano di Tenna FM 18 1452 111625
Montappone FM 18 1682 113307
Castorano AP 18 2380 115687
Ripatransone AP 19 4309 119996
Monterubbiano FM 19 2230 122226
Gualdo MC 19 815 123041
Montefiore dell'Aso AP 19 2123 125164
Castel di Lama AP 19 8634 133798
Massa Fermana FM 19 963 134761
Montemonaco AP 19 604 135365
Folignano AP 20 9241 144606
Moresco FM 20 598 145204

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NW of Teramo (54892 inhabitants)
68 Km E of Foligno (57155 inhabitants)
71 Km S of Ancona (100861 inhabitants)
71 Km N of L'Aquila (69753 inhabitants)
72 Km NW of Montesilvano (53738 inhabitants)
80 Km NW of Pescara (121014 inhabitants)
87 Km NE of Terni (111501 inhabitants)
87 Km NW of Chieti (51815 inhabitants)
94 Km E 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 1.9 2020-02-04
16:31:05		 42.9838 13.5372 27 2020-07-18
21:08:31		 Bollettino Sismico Italiano INGV 77986191
Reviewed
Rev100 		ML 1.8 2020-02-04
16:31:05		 42.9792 13.5292 27 2020-02-04
16:46:13		 Sala Sismica INGV-Roma 76207461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-04 16:31:05 ± 0.2
Latitude 42.9838 ± 0.0063
Longitude 13.5372 ± 0.0123
Depth (km) 27 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77986191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 918
Semi-minor axis of confidence ellipse (meter) 563
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 251
Circular confidence region, given by single value of horizontal uncertainty (meter) 920.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 85
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.46945
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations 5
Type of magnitude ML
Reference to an origin 77986191
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-04-20 18:17:51

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 76207461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-04 16:46:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-02-04T16:31:23.49 0.3 undecidable manual S 318 52.1034 111 0.78 57
IV.TERO.HHZ. 2020-02-04T16:31:20.19 0.6 undecidable manual S 172 40.4262 118 0.32 46
IV.SENI.HNZ. 2020-02-04T16:31:20.10 3.0 negative manual P -0.2 0
IV.SMA1.EHN. 2020-02-04T16:31:20.63 0.6 undecidable manual S 203 42.5241 116 0.26 46
IV.NRCA.HHZ. 2020-02-04T16:31:19.66 0.3 undecidable manual S 244 38.2284 119 0.31 69
IV.CSP1.EHZ. 2020-02-04T16:31:17.44 0.6 undecidable manual S 294 29.4483 127 0.04 49
IV.SAP2.EHZ. 2020-02-04T16:31:15.08 0.3 undecidable manual S 318 16.7721 145 0.06 76
IV.MNTP.HNZ. 2020-02-04T16:31:15.21 0.3 undecidable manual S 342 17.871 143 0.02 76
IV.GUMA.HHZ. 2020-02-04T16:31:15.16 0.3 undecidable manual S 298 18.5703 142 -0.14 74
IV.OFFI.HHZ. 2020-02-04T16:31:15.30 0.6 undecidable manual S 114 13.1757 151 0.79 43
IV.EL6.EHZ. 2020-02-04T16:31:15.59 0.3 undecidable manual P 318 52.1034 111 0.14 70
IV.MMO1.EHZ. 2020-02-04T16:31:14.95 0.3 undecidable manual S 241 19.4694 140 -0.51 69
IV.SMA1.EHN. 2020-02-04T16:31:14.03 0.3 undecidable manual P 203 42.5241 116 -0.07 73
IV.MNTT.EHZ. 2020-02-04T16:31:14.19 0.6 undecidable manual S 29 9.879 158 0.07 52
IV.TERO.HHZ. 2020-02-04T16:31:13.70 0.6 undecidable manual P 172 40.4262 118 -0.12 48
IV.NRCA.HHZ. 2020-02-04T16:31:13.49 0.3 undecidable manual P 244 38.2284 119 -0.03 74
IV.CSP1.EHZ. 2020-02-04T16:31:12.22 0.3 undecidable manual P 294 29.4483 127 -0.17 73
IV.GUMA.HHZ. 2020-02-04T16:31:11.07 0.1 undecidable manual P 298 18.5703 142 -0.11 100
IV.MNTT.EHZ. 2020-02-04T16:31:10.34 0.1 undecidable manual P 29 9.879 158 -0.16 100
IV.OFFI.HHZ. 2020-02-04T16:31:10.79 0.6 undecidable manual P 114 13.1757 151 0.07 51
IV.SAP2.EHZ. 2020-02-04T16:31:10.79 0.3 undecidable manual P 318 16.7721 145 -0.22 73
IV.MMO1.EHZ. 2020-02-04T16:31:10.92 0.3 undecidable manual P 241 19.4694 140 -0.35 71
IV.MNTP.HNZ. 2020-02-04T16:31:10.89 0.3 undecidable manual P 342 17.871 143 -0.22 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SAP2.EHE. ML:2.0 0.00047551624999999997 0.1664 AML other m 2020-02-04T16:31:15.38
IV.SAP2.EHN. ML:2.4 0.0011452330000000003 0.256 AML other m 2020-02-04T16:31:15.29
IV.CSP1.EHN. ML:1.3 0.00007451696500000001 0.256 AML other m 2020-02-04T16:31:17.49
IV.CSP1.EHE. ML:1.7 0.00017818689999999997 1.9584 AML other m 2020-02-04T16:31:21.85
IV.EL6.EHE. ML:2.1 0.00028092925 2.368 AML other m 2020-02-04T16:31:35.01
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