Earthquake with magnitude of Md 2.2 on date 26-05-1990 and time 16:49:30 (Italy) in region 4 km W Campello sul Clitunno (PG)

A magnitude Md 2.2 earthquake occured in region: 4 km W Campello sul Clitunno (PG), on

  • 26-05-1990 14:49:30 (UTC)
  • 26-05-1990 16:49:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8060, 12.7270 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Campello sul Clitunno PG 5 2442 2442
Castel Ritaldi PG 5 3278 5720
Spoleto PG 8 38218 43938
Trevi PG 8 8469 52407
Montefalco PG 12 5679 58086
Vallo di Nera PG 12 364 58450
Sant'Anatolia di Narco PG 12 564 59014
Giano dell'Umbria PG 13 3846 62860
Scheggino PG 13 461 63321
Cerreto di Spoleto PG 16 1075 64396
Foligno PG 17 57155 121551
Massa Martana PG 17 3770 125321
Bevagna PG 17 5081 130402
Gualdo Cattaneo PG 18 6155 136557
Sellano PG 19 1079 137636
Acquasparta TR 19 4778 142414
Poggiodomo PG 20 117 142531

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km S of Foligno (57155 inhabitants)
28 Km N of Terni (111501 inhabitants)
43 Km SE of Perugia (166134 inhabitants)
67 Km NE of Viterbo (67173 inhabitants)
75 Km NW of L'Aquila (69753 inhabitants)
82 Km W of Teramo (54892 inhabitants)
90 Km N of Guidonia Montecelio (88673 inhabitants)
94 Km N of Tivoli (56533 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 1990-05-26
14:49:30
42.806 12.727 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 119789
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-05-26 14:49:30 ± 0.247
Latitude 42.8060 ± 0.0131
Longitude 12.7270 ± 0.0209
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 119789

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) 2243.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00235
Epicentral distance of station farthest from the epicenter (degree) 0.00890
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 119789
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:51:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 1990-05-26T14:49:55.95 10.0 undecidable manual SG 12 0.6993 0.69 0.2
--.ALP.Z. 1990-05-26T14:49:52.79 10.0 undecidable manual SG 92 0.6105 0.53 0.4
--.CRE.Z. 1990-05-26T14:49:50.00 10.0 undecidable manual PG 325 0.9879 -0.01 1
--.MNS.Z. 1990-05-26T14:49:46.90 10.0 undecidable manual SG 184 0.4218 0.05 0.6
--.RMF.Z. 1990-05-26T14:49:44.52 10.0 undecidable manual SG 67 0.3774 -0.22 0.9
--.ALP.Z. 1990-05-26T14:49:42.81 10.0 undecidable manual PG 92 0.6105 -0.28 1.4
--.ARV.Z. 1990-05-26T14:49:42.81 10.0 undecidable manual PG 12 0.6993 -2.01 0
--.ASS.Z. 1990-05-26T14:49:41.40 10.0 undecidable manual SG 347 0.2553 0.17 0.4
--.MNS.Z. 1990-05-26T14:49:39.52 10.0 undecidable manual PG 184 0.4218 0.02 1.6
--.RMF.Z. 1990-05-26T14:49:38.86 10.0 undecidable manual PG 67 0.3774 0.11 3
--.ASS.Z. 1990-05-26T14:49:36.44 10.0 undecidable manual PG 347 0.2553 -0.07 1.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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