Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 25-07-2018 and time 18:08:23 (Italy) in region 2 km S Colle di Tora (RI)

A magnitude ML 1.3 earthquake occured in region: 2 km S Colle di Tora (RI), on

  • 25-07-2018 16:08:23 (UTC)
  • 25-07-2018 18:08:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.1950, 12.9550 at 18 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
Colle di Tora RI 2 372 372
Castel di Tora RI 3 288 660
Ascrea RI 4 234 894
Paganico Sabino RI 4 172 1066
Pozzaglia Sabina RI 4 360 1426
Poggio Moiano RI 6 2751 4177
Orvinio RI 7 405 4582
Collegiove RI 7 213 4795
Varco Sabino RI 7 187 4982
Turania RI 8 241 5223
Marcetelli RI 9 89 5312
Longone Sabino RI 9 597 5909
Monteleone Sabino RI 9 1224 7133
Rocca Sinibalda RI 9 815 7948
Scandriglia RI 10 3108 11056
Collalto Sabino RI 10 442 11498
Torricella in Sabina RI 10 1342 12840
Nespolo RI 10 246 13086
Poggio San Lorenzo RI 11 589 13675
Vivaro Romano RM 11 182 13857
Percile RM 12 255 14112
Vallinfreda RM 13 283 14395
Frasso Sabino RI 13 743 15138
Poggio Nativo RI 13 2622 17760
Monteflavio RM 14 1348 19108
Montorio Romano RM 14 1984 21092
Licenza RM 14 1011 22103
Casaprota RI 14 744 22847
Nerola RM 14 1926 24773
Petrella Salto RI 15 1197 25970
Concerviano RI 15 291 26261
Belmonte in Sabina RI 15 636 26897
Montenero Sabino RI 15 299 27196
Carsoli AQ 15 5396 32592
Riofreddo RM 15 781 33373
Cineto Romano RM 16 601 33974
Pescorocchiano RI 16 2075 36049
Fiamignano RI 16 1413 37462
Roccagiovine RM 17 263 37725
Toffia RI 17 1058 38783
Moricone RM 17 2650 41433
Oricola AQ 18 1244 42677
Arsoli RM 18 1586 44263
Mompeo RI 18 530 44793
Castelnuovo di Farfa RI 18 1059 45852
Mandela RM 18 917 46769
Fara in Sabina RI 19 13742 60511
Salisano RI 19 567 61078
Montelibretti RM 19 5323 66401
Roviano RM 19 1351 67752
Pereto AQ 19 682 68434

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Guidonia Montecelio (88673 inhabitants)
29 Km NE of Tivoli (56533 inhabitants)
41 Km W of L'Aquila (69753 inhabitants)
48 Km SE of Terni (111501 inhabitants)
51 Km NE of Roma (2864731 inhabitants)
58 Km N of Velletri (53303 inhabitants)
69 Km NE of Pomezia (62966 inhabitants)
71 Km NE of Aprilia (73446 inhabitants)
74 Km E of Viterbo (67173 inhabitants)
76 Km NE of Fiumicino (78395 inhabitants)
80 Km SW of Teramo (54892 inhabitants)
81 Km N of Latina (125985 inhabitants)
87 Km S of Foligno (57155 inhabitants)
87 Km NE of Anzio (54211 inhabitants)
96 Km E of Civitavecchia (52991 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 		Md 1.6
ML 1.3 		2018-07-25
16:08:23		 42.195 12.9552 18 2019-04-24
14:50:51		 Bollettino Sismico Italiano INGV 59438491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-07-25 16:08:23 ± 0.07
Latitude 42.1950 ± 0.0027
Longitude 12.9552 ± 0.0049
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 59438491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 397
Semi-minor axis of confidence ellipse (meter) 149
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 282
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.49463
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 59438491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-08-06 12:01:43

Md:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 2
Type of magnitude Md
Reference to an origin 59438491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-08-06 12:01:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESX.HHE. 2018-07-25T16:08:40.85 0.6 undecidable manual S 327 54.9006 99 0.15 46
IV.ARRO.EHZ. 2018-07-25T16:08:37.95 1.0 undecidable manual S 340 45.3213 101 -0.24 23
IV.LNSS.HHZ. 2018-07-25T16:08:37.97 1.0 undecidable manual S 9 45.8208 101 -0.33 23
IV.RM33.HNE. 2018-07-25T16:08:36.98 0.3 undecidable manual S 31 40.8258 103 -0.02 73
IV.RCAV.EHZ. 2018-07-25T16:08:36.32 0.3 undecidable manual S 181 38.628 104 -0.1 72
IV.SRES.HHN. 2018-07-25T16:08:35.87 0.3 undecidable manual S 277 36.8298 105 -0.11 73
IV.CERT.HHZ. 2018-07-25T16:08:33.56 0.3 undecidable manual S 175 27.3504 112 -0.01 75
OB.GAVE.EHZ. 2018-07-25T16:08:33.55 3.0 undecidable manual P 0 0
IV.CESX.HHE. 2018-07-25T16:08:33.61 1.0 undecidable manual P 327 54.9006 99 0.2 23
IV.ARRO.EHZ. 2018-07-25T16:08:32.16 0.3 undecidable manual P 340 45.3213 101 0.2 69
IV.MTCE.HHZ. 2018-07-25T16:08:32.96 0.3 undecidable manual S 223 25.9518 113 -0.25 72
IV.LNSS.HHZ. 2018-07-25T16:08:31.77 0.3 undecidable manual P 9 45.8208 101 -0.26 69
IV.RM33.HNE. 2018-07-25T16:08:31.11 0.1 undecidable manual P 31 40.8258 103 -0.17 94
IV.PTQR.HHZ. 2018-07-25T16:08:31.68 1.0 undecidable manual P 117 41.4252 103 0.32 23
IV.RCAV.EHZ. 2018-07-25T16:08:30.98 0.1 undecidable manual P 181 38.628 104 0.04 97
IV.SRES.HHN. 2018-07-25T16:08:30.93 0.1 undecidable manual P 277 36.8298 105 0.24 93
IV.FIAM.HHZ. 2018-07-25T16:08:30.86 0.3 undecidable manual S 59 15.5733 130 0.01 76
IV.MTCE.HHZ. 2018-07-25T16:08:29.08 0.1 undecidable manual P 223 25.9518 113 -0.01 100
IV.CERT.HHZ. 2018-07-25T16:08:29.39 0.1 positive manual P 175 27.3504 112 0.1 98
IV.FIAM.HHZ. 2018-07-25T16:08:27.88 0.1 undecidable manual P 59 15.5733 130 0.16 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERT.HHE. ML:1.5 0.000142 1.22 AML other m 2018-07-25T16:08:34.30
IV.FIAM.HHE. ML:1.5 0.0001975 1.04 AML other m 2018-07-25T16:08:32.85
IV.CERT.HHN. ML:1.2 0.00007919999999999999 1.4 AML other m 2018-07-25T16:08:33.79
IV.MTCE.HHE. ML:1.3 0.000087927145 0 AML other m 2018-07-25T16:08:33.64
IV.MTCE.HHN. ML:0.7 0.0000261814 0.0896 AML other m 2018-07-25T16:08:33.62
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