Earthquake with magnitude of Md 2.2 on date 19-03-1991 and time 21:41:05 (Italy) in region 4 km E Fiamignano (RI)

A magnitude Md 2.2 earthquake occured in region: 4 km E Fiamignano (RI), on

  • 19-03-1991 20:41:05 (UTC)
  • 19-03-1991 21:41:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.27, 13.18 at 5 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
Fiamignano RI 4 1413 1413
Pescorocchiano RI 7 2075 3488
Petrella Salto RI 9 1197 4685
Borgorose RI 10 4591 9276
Tornimparte AQ 10 3187 12463
Marcetelli RI 12 89 12552
Scoppito AQ 13 3727 16279
Varco Sabino RI 13 187 16466
Lucoli AQ 13 1011 17477
Nespolo RI 15 246 17723
Collegiove RI 16 213 17936
Ascrea RI 17 234 18170
Concerviano RI 17 291 18461
Paganico Sabino RI 17 172 18633
Longone Sabino RI 17 597 19230
Borgo Velino RI 18 972 20202
Collalto Sabino RI 18 442 20644
Antrodoco RI 18 2588 23232
Castel Sant'Angelo RI 19 1308 24540
Castel di Tora RI 19 288 24828
Sante Marie AQ 19 1166 25994
Colle di Tora RI 20 372 26366

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km W of L'Aquila (69753 inhabitants)
46 Km NE of Tivoli (56533 inhabitants)
48 Km NE of Guidonia Montecelio (88673 inhabitants)
54 Km SE of Terni (111501 inhabitants)
61 Km SW of Teramo (54892 inhabitants)
71 Km NE of Roma (2864731 inhabitants)
73 Km NE of Velletri (53303 inhabitants)
82 Km W of Chieti (51815 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
86 Km SE of Foligno (57155 inhabitants)
87 Km NE of Pomezia (62966 inhabitants)
87 Km NE of Aprilia (73446 inhabitants)
88 Km W of Pescara (121014 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
92 Km N of Latina (125985 inhabitants)
95 Km NE of Fiumicino (78395 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
Rev 1000 Md 2.2 1991-03-19
20:41:05
42.27 13.18 5 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 137829
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-03-19 20:41:05 ± 0.311
Latitude 42.27 ± 0.02
Longitude 13.18 ± 0.02
Depth (km) 5 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 137829

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 3028.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 141
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.01109
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 137829
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:08:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1991-03-19T20:41:28.82 10.0 undecidable manual PN 352 0.0111 -0.09 1.1
--.ASS.Z. 1991-03-19T20:41:23.00 10.0 undecidable manual PG 334 0.0079 -0.03 1.5
--.SDI.Z. 1991-03-19T20:41:20.24 10.0 undecidable manual PG 139 0.0066 -0.03 1.6
--.MNS.Z. 1991-03-19T20:41:19.00 10.0 undecidable manual SG 287 0.0034 -0.95 0.2
--.AZI.Z. 1991-03-19T20:41:16.61 10.0 undecidable manual SG 146 0.0031 -1.72 0
--.AZI.Z. 1991-03-19T20:41:13.61 10.0 undecidable manual PG 146 0.0031 0.89 0.7
--.MNS.Z. 1991-03-19T20:41:13.98 10.0 undecidable manual PG 287 0.0034 0.32 1.7
--.AQU.Z. 1991-03-19T20:41:11.64 10.0 undecidable manual SG 63 0.0016 -0.76 0.4
--.AQU.Z. 1991-03-19T20:41:09.63 10.0 undecidable manual PG 63 0.0016 0.34 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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