Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.2 on date 26-09-1994 and time 22:05:05 (Italy) in region 4 km SE Cave (RM)

A magnitude Md 2.2 earthquake occured in region: 4 km SE Cave (RM), on

  • 26-09-1994 21:05:05 (UTC)
  • 26-09-1994 22:05:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7940, 12.9720 at 10 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
Genazzano RM 4 6036 6036
Cave RM 4 11287 17323
Valmontone RM 5 15959 33282
Rocca di Cave RM 6 377 33659
Labico RM 7 6379 40038
Paliano FR 7 8281 48319
Colleferro RM 8 21595 69914
Artena RM 8 14276 84190
Capranica Prenestina RM 8 351 84541
Palestrina RM 9 21672 106213
Castel San Pietro Romano RM 9 902 107115
Olevano Romano RM 9 6687 113802
San Vito Romano RM 10 3273 117075
Bellegra RM 11 2887 119962
Serrone FR 12 3099 123061
Roiate RM 12 737 123798
Segni RM 12 9159 132957
Poli RM 12 2418 135375
Gavignano RM 13 1916 137291
Zagarolo RM 13 17843 155134
Pisoniano RM 13 770 155904
Rocca Massima LT 13 1136 157040
Lariano RM 14 13432 170472
Rocca Santo Stefano RM 14 975 171447
Casape RM 14 744 172191
San Cesareo RM 15 15153 187344
Affile RM 15 1548 188892
Piglio FR 15 4666 193558
Gallicano nel Lazio RM 15 6334 199892
Arcinazzo Romano RM 15 1348 201240
Gerano RM 16 1263 202503
San Gregorio da Sassola RM 16 1619 204122
Anagni FR 16 21464 225586
Acuto FR 17 1920 227506
Cerreto Laziale RM 17 1118 228624
Montelanico RM 17 2131 230755
Rocca Priora RM 17 11962 242717
Canterano RM 17 351 243068
Cori LT 17 11065 254133
Subiaco RM 18 9074 263207
Rocca Canterano RM 19 196 263403
Colonna RM 19 4287 267690
Ciciliano RM 19 1336 269026
Gorga RM 19 710 269736
Jenne RM 19 366 270102
Monte Compatri RM 20 11978 282080
Velletri RM 20 53303 335383

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NE of Velletri (53303 inhabitants)
24 Km SE of Tivoli (56533 inhabitants)
31 Km SE of Guidonia Montecelio (88673 inhabitants)
35 Km NE of Aprilia (73446 inhabitants)
37 Km N of Latina (125985 inhabitants)
41 Km E of Pomezia (62966 inhabitants)
42 Km E of Roma (2864731 inhabitants)
48 Km NE of Anzio (54211 inhabitants)
61 Km E of Fiumicino (78395 inhabitants)
71 Km SW of L'Aquila (69753 inhabitants)
89 Km SE of Terni (111501 inhabitants)
100 Km SE of Viterbo (67173 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 2.2
ML-VAX 1.7 		1994-09-26
21:05:05		 41.794 12.972 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 217079
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-09-26 21:05:05 ± 0.086
Latitude 41.7940 ± 0.0050
Longitude 12.9720 ± 0.0053
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 217079

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) 706.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 161
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00170
Epicentral distance of station farthest from the epicenter (degree) 0.00567
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 217079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:24:53

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 217079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SDI.Z. 1994-09-26T21:05:27.96 10.0 undecidable manual SG 97 0.6327 0.23 0.2
--.MNS.Z. 1994-09-26T21:05:27.64 10.0 undecidable manual SG 339 0.6216 -0.01 0.7
--.MNS.Z. 1994-09-26T21:05:18.35 10.0 undecidable manual PG 339 0.6216 0.03 1.8
--.SDI.Z. 1994-09-26T21:05:18.90 10.0 undecidable manual PG 97 0.6327 -0.27 0.5
--.RMP.Z. 1994-09-26T21:05:14.70 10.0 undecidable manual SG 274 0.1998 0.1 0.8
--.RDP.Z. 1994-09-26T21:05:13.56 10.0 undecidable manual SG 259 0.1887 -0.15 0.6
--.RMP.Z. 1994-09-26T21:05:10.29 10.0 undecidable manual PG 274 0.1998 -0.13 1.6
--.RDP.Z. 1994-09-26T21:05:10.40 10.0 undecidable manual PG 259 0.1887 0.13 1.7
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