Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 4.0 on date 22-12-1989 and time 07:48:14 (Italy) in region 4 km S Valtopina (PG)

A magnitude Md 4.0 earthquake occured in region: 4 km S Valtopina (PG), on

  • 22-12-1989 06:48:14 (UTC)
  • 22-12-1989 07:48:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.02, 12.77 at 23 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
Valtopina PG 4 1398 1398
Spello PG 9 8645 10043
Foligno PG 9 57155 67198
Nocera Umbra PG 10 5839 73037
Assisi PG 14 28299 101336
Cannara PG 15 4305 105641
Serravalle di Chienti MC 16 1070 106711
Trevi PG 16 8469 115180
Bevagna PG 16 5081 120261
Montefalco PG 17 5679 125940
Bastia Umbra PG 19 21874 147814
Monte Cavallo MC 19 145 147959
Sellano PG 20 1079 149038

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km NE of Foligno (57155 inhabitants)
32 Km E of Perugia (166134 inhabitants)
52 Km N of Terni (111501 inhabitants)
86 Km NE of Viterbo (67173 inhabitants)
86 Km W of Teramo (54892 inhabitants)
87 Km SE of Arezzo (99543 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
91 Km NW of L'Aquila (69753 inhabitants)
94 Km S of Fano (60888 inhabitants)
100 Km S of Pesaro (94582 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 4.0
ML-VAX 4.1 		1989-12-22
06:48:14		 43.02 12.77 23 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 106489
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-12-22 06:48:14 ± 0.141
Latitude 43.02 ± 0.01
Longitude 12.77 ± 0.01
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 106489

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) 1141.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 146
Number of defining phases 146
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.08159
Number of stations at which the event was observed 113
Number of stations from which data was used for origin computation 113
Magnitudes information

Md:4

Field Value
Value 4
Uncertainty
Num. used stations 8
Type of magnitude Md
Reference to an origin 106489
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:39:10

ML:4.1

Field Value
Value 4.1
Uncertainty
Num. used stations 12
Type of magnitude ML
Reference to an origin 106489
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 Takeoff_angle Residual Weight
--.MAF.Z. 1989-12-22T06:51:32.00 10.0 undecidable manual SN 297 0.0713 0.79 0.2
--.BGF.Z. 1989-12-22T06:51:30.40 10.0 undecidable manual SN 300 0.0708 0.5 0.3
--.SSF.Z. 1989-12-22T06:51:25.20 10.0 undecidable manual SN 304 0.0691 -0.24 0.4
--.LOR.Z. 1989-12-22T06:51:21.80 10.0 undecidable manual SN 307 0.0682 -1.11 0.1
--.SMF.Z. 1989-12-22T06:51:17.00 10.0 undecidable manual SN 302 0.0656 0.97 0.2
--.LBF.Z. 1989-12-22T06:51:17.20 10.0 undecidable manual SN 305 0.0662 -0.66 0.3
--.HAU.Z. 1989-12-22T06:51:01.80 10.0 undecidable manual SN 320 0.0603 -0.47 0.4
--.CDF.Z. 1989-12-22T06:50:59.20 10.0 undecidable manual SN 326 0.0595 -0.74 0.3
--.BSF.Z. 1989-12-22T06:50:55.20 10.0 undecidable manual SN 320 0.0574 0.81 0.3
--.VKA.Z. 1989-12-22T06:50:41.20 10.0 undecidable manual SN 23 0.0521 0.6 0.5
--.IVA.Z. 1989-12-22T06:50:25.00 10.0 undecidable manual SN 89 0.0469 -1.78 0
--.EPF.Z. 1989-12-22T06:50:25.00 10.0 undecidable manual PN 274 0.0816 1.04 0.4
--.PVL.Z. 1989-12-22T06:50:24.00 10.0 negative manual PN 84 0.0814 0.4 1.6
--.LFF.Z. 1989-12-22T06:50:22.00 10.0 undecidable manual PN 286 0.0797 1.02 0.4
--.LPL.Z. 1989-12-22T06:50:22.20 10.0 undecidable manual SN 302 0.0448 0.87 0.3
--.LPO.Z. 1989-12-22T06:50:17.60 10.0 undecidable manual PN 285 0.0765 1.44 0.1
--.TTG.Z. 1989-12-22T06:50:15.00 10.0 undecidable manual SN 94 0.0431 -1.93 0
--.LRG.Z. 1989-12-22T06:50:15.20 10.0 undecidable manual SN 277 0.0421 1.05 0.2
--.RJF.Z. 1989-12-22T06:50:15.90 10.0 undecidable manual PN 289 0.0754 1.48 0.1
--.CLL.Z. 1989-12-22T06:50:13.00 10.0 undecidable manual PN 0 0.0746 -0.15 1
--.TCF.Z. 1989-12-22T06:50:12.50 10.0 undecidable manual PN 297 0.0736 0.78 0.6
--.LMR.Z. 1989-12-22T06:50:11.80 10.0 undecidable manual SN 275 0.0411 0.34 0.5
--.CAF.Z. 1989-12-22T06:50:09.60 10.0 undecidable manual PN 287 0.0713 1.38 0.2
--.FRF.Z. 1989-12-22T06:50:09.80 10.0 undecidable manual SN 278 0.0403 0.4 0.5
--.MAF.Z. 1989-12-22T06:50:08.10 10.0 undecidable manual PN 297 0.0713 -0.13 1
--.BGF.Z. 1989-12-22T06:50:07.60 10.0 undecidable manual PN 300 0.0708 0.13 1
--.ORO.Z. 1989-12-22T06:50:04.29 10.0 undecidable manual SN 308 0.0387 -0.72 0.4
--.SSF.Z. 1989-12-22T06:50:04.20 10.0 undecidable manual PN 304 0.0691 -0.7 0.7
--.AVF.Z. 1989-12-22T06:50:04.00 10.0 undecidable manual PN 302 0.0688 -0.47 0.9
--.DOI.Z. 1989-12-22T06:50:03.37 10.0 undecidable manual SN 292 0.0382 -0.49 0.5
--.LOR.Z. 1989-12-22T06:50:02.00 10.0 undecidable manual PN 307 0.0682 -1.43 0.2
--.LBF.Z. 1989-12-22T06:50:00.00 10.0 undecidable manual PN 305 0.0662 -0.52 0.8
--.SBF.Z. 1989-12-22T06:49:58.00 10.0 undecidable manual SN 284 0.0356 1.08 0.2
--.SMF.Z. 1989-12-22T06:49:58.80 10.0 undecidable manual PN 302 0.0656 -0.66 0.7
--.VAI.Z. 1989-12-22T06:49:56.94 10.0 undecidable manual SN 316 0.0362 -1.58 0.1
--.PRU.Z. 1989-12-22T06:49:55.80 10.0 undecidable manual PN 9 0.0635 -0.65 0.7
--.HAU.Z. 1989-12-22T06:49:51.20 10.0 undecidable manual PN 320 0.0603 -0.32 1
--.CDF.Z. 1989-12-22T06:49:49.60 10.0 undecidable manual PN 326 0.0595 -0.57 0.8
--.BSF.Z. 1989-12-22T06:49:47.00 10.0 undecidable manual PN 320 0.0574 0.04 1.2
--.CKI.Z. 1989-12-22T06:49:46.10 10.0 undecidable manual SN 294 0.0317 -0.62 0.4
--.OHR.Z. 1989-12-22T06:49:46.00 10.0 negative manual PN 105 0.0563 0.72 1.5
--.FVI.Z. 1989-12-22T06:49:45.65 10.0 undecidable manual SN 0 0.0321 -1.99 0
--.SRO.Z. 1989-12-22T06:49:43.70 10.0 undecidable manual PN 36 0.0554 -0.4 2.1
--.KHC.Z. 1989-12-22T06:49:43.40 10.0 undecidable manual PN 4 0.0551 -0.19 2.3
--.VKA.Z. 1989-12-22T06:49:38.90 10.0 positive manual PN 23 0.0521 -0.1 2.5
--.CTI.Z. 1989-12-22T06:49:36.88 10.0 undecidable manual SN 345 0.0281 -0.24 0.6
--.VVI.Z. 1989-12-22T06:49:34.52 10.0 undecidable manual SN 355 0.0267 1.18 0.2
--.SAL.Z. 1989-12-22T06:49:34.93 10.0 undecidable manual SN 328 0.0274 -0.15 0.6
--.SOP.Z. 1989-12-22T06:49:34.00 10.0 undecidable manual PN 28 0.0482 0.93 0.6
--.PA2.Z. 1989-12-22T06:49:33.55 10.0 undecidable manual PN 147 0.048 0.9 0.6
--.PVY.Z. 1989-12-22T06:49:33.50 10.0 undecidable manual PN 92 0.0477 1.35 0.2
--.SC9.Z. 1989-12-22T06:49:33.50 10.0 undecidable manual PN 153 0.0473 1.41 0.2
--.IVA.Z. 1989-12-22T06:49:32.70 10.0 undecidable manual PN 89 0.0469 1.67 0.1
--.KMR.Z. 1989-12-22T06:49:30.70 10.0 undecidable manual PN 10 0.0461 0.97 1.1
--.LPG.Z. 1989-12-22T06:49:28.20 10.0 undecidable manual PN 301 0.0447 0.6 1
--.DR2.Z. 1989-12-22T06:49:28.70 10.0 undecidable manual PN 150 0.0448 0.2 1.3
--.LPL.Z. 1989-12-22T06:49:28.60 10.0 undecidable manual PN 302 0.0448 0.72 0.8
--.TR9.Z. 1989-12-22T06:49:27.10 10.0 undecidable manual SN 136 0.0242 0.38 0.5
--.ULC.Z. 1989-12-22T06:49:26.60 10.0 undecidable manual PN 100 0.044 0.04 1.4
--.BNI.Z. 1989-12-22T06:49:26.73 10.0 undecidable manual PN 296 0.0434 1.11 0.5
--.TTG.Z. 1989-12-22T06:49:25.50 10.0 undecidable manual PN 94 0.0431 0.16 1.4
--.LCI.Z. 1989-12-22T06:49:25.81 10.0 undecidable manual PN 122 0.0432 0.38 1.2
--.LRG.Z. 1989-12-22T06:49:24.10 10.0 undecidable manual PN 277 0.0421 0.37 1.2
--.RRL.Z. 1989-12-22T06:49:24.36 10.0 undecidable manual PN 295 0.0423 0.37 1.2
--.ROI.Z. 1989-12-22T06:49:23.45 10.0 undecidable manual PN! 139 0.0402 2.6 0
--.LMR.Z. 1989-12-22T06:49:22.80 10.0 undecidable manual PN 275 0.0411 0.62 1
--.LSD.Z. 1989-12-22T06:49:22.98 10.0 undecidable manual PN 303 0.0423 -0.94 0.6
--.CZI.Z. 1989-12-22T06:49:22.31 10.0 undecidable manual PN 145 0.041 0.18 1.4
--.FRF.Z. 1989-12-22T06:49:21.70 10.0 undecidable manual PN 278 0.0403 0.71 0.9
--.BDV.Z. 1989-12-22T06:49:21.50 10.0 undecidable manual PN 97 0.0406 0.12 1.4
--.TDS.Z. 1989-12-22T06:49:19.20 10.0 undecidable manual PN 140 0.0386 0.8 0.8
--.PZZ.Z. 1989-12-22T06:49:19.10 10.0 undecidable manual PN 291 0.0391 -0.13 1.4
--.RSP.Z. 1989-12-22T06:49:19.93 10.0 undecidable manual PN 300 0.0404 -1.16 0.4
--.DOI.Z. 1989-12-22T06:49:18.15 10.0 undecidable manual PN 292 0.0382 0.36 1.3
--.ORO.Z. 1989-12-22T06:49:18.10 10.0 undecidable manual PN 308 0.0387 -0.36 1.3
--.ORX.Z. 1989-12-22T06:49:17.70 10.0 undecidable manual PN 308 0.0387 -0.79 0.8
--.BRY.Z. 1989-12-22T06:49:17.80 10.0 undecidable manual PN 89 0.038 0.38 1.3
--.CSI.Z. 1989-12-22T06:49:17.25 10.0 undecidable manual PN 139 0.0376 0.48 1.2
--.HCY.Z. 1989-12-22T06:49:17.80 10.0 undecidable manual PN 95 0.0381 0.12 1.5
--.STV.Z. 1989-12-22T06:49:16.91 10.0 negative manual PN 289 0.0371 0.92 1.4
--.KBA.Z. 1989-12-22T06:49:16.20 10.0 negative manual PN 5 0.0367 0.84 1.6
--.PE1.Z. 1989-12-22T06:49:15.30 10.0 undecidable manual PN 121 0.0369 -0.54 1.2
--.ENR.Z. 1989-12-22T06:49:15.65 10.0 undecidable manual PN 289 0.0364 0.61 1.1
--.VAI.Z. 1989-12-22T06:49:14.60 10.0 negative manual PN 316 0.0362 -0.11 3
--.MMN.Z. 1989-12-22T06:49:13.40 10.0 undecidable manual PN 141 0.0355 -0.28 1.4
--.SBF.Z. 1989-12-22T06:49:13.50 10.0 undecidable manual PN 284 0.0356 -0.28 1.4
--.BRT.Z. 1989-12-22T06:49:12.98 10.0 undecidable manual PN 121 0.0351 0.03 1.5
--.MSC.Z. 1989-12-22T06:49:10.50 10.0 undecidable manual SN 153 0.0183 -0.65 0.4
--.ZAG.Z. 1989-12-22T06:49:09.20 10.0 positive manual PN 38 0.0326 -0.04 3
--.BAI.Z. 1989-12-22T06:49:09.00 10.0 undecidable manual PN 120 0.0324 0.16 1.5
--.PTJ.Z. 1989-12-22T06:49:09.50 10.0 undecidable manual PN 37 0.0331 -0.45 2.5
--.FVI.Z. 1989-12-22T06:49:08.60 10.0 negative manual PN 0 0.0321 0.17 2.9
--.MGR.Z. 1989-12-22T06:49:08.21 10.0 undecidable manual PN 143 0.032 -0.03 1.5
--.CKI.Z. 1989-12-22T06:49:07.43 10.0 negative manual PN 294 0.0317 -0.46 2.4
--.PCP.Z. 1989-12-22T06:49:05.20 10.0 undecidable manual PN 297 0.0306 -0.96 0.6
--.LJU.Z. 1989-12-22T06:49:04.50 10.0 positive manual PN 21 0.0294 0.19 2.9
--.CDM.Z. 1989-12-22T06:49:04.00 10.0 undecidable manual PN 125 0.0291 0.02 1.5
--.PII.Z. 1989-12-22T06:49:03.50 10.0 undecidable manual SN 293 0.0159 -1.45 0.1
--.CTI.Z. 1989-12-22T06:49:02.31 10.0 negative manual PN 345 0.0281 -0.04 3
--.VEA.Z. 1989-12-22T06:49:02.70 10.0 undecidable manual PN! 310 0.0264 2.98 0
--.VOY.Z. 1989-12-22T06:49:01.80 10.0 undecidable manual PN 14 0.028 -0.36 1.3
--.VBY.Z. 1989-12-22T06:49:01.50 10.0 positive manual PN 34 0.0274 0.15 2.9
--.GEN.Z. 1989-12-22T06:49:01.20 10.0 undecidable manual PN 298 0.0278 -0.76 0.9
--.BOB.Z. 1989-12-22T06:49:01.42 10.0 undecidable manual PN 307 0.0266 1.36 0.3
--.SAL.Z. 1989-12-22T06:49:01.69 10.0 undecidable manual PN 328 0.0274 0.52 1.2
--.SGO.Z. 1989-12-22T06:49:01.37 10.0 undecidable manual PN 141 0.0279 -0.67 1
--.VVI.Z. 1989-12-22T06:49:00.70 10.0 undecidable manual PN 355 0.0267 -0.1 1.5
--.CEY.Z. 1989-12-22T06:49:00.00 10.0 undecidable manual PN 22 0.0266 -0.09 1.5
--.FG3.Z. 1989-12-22T06:48:57.10 10.0 undecidable manual PN 118 0.0242 0.65 1
--.TRI.Z. 1989-12-22T06:48:57.80 10.0 undecidable manual PN 14 0.0249 -0.48 1.2
--.TR9.Z. 1989-12-22T06:48:56.10 10.0 undecidable manual PN 136 0.0242 -0.25 1.4
--.BVT.Z. 1989-12-22T06:48:55.20 10.0 undecidable manual PN 305 0.0232 0.37 1.3
--.SOR.Z. 1989-12-22T06:48:55.20 10.0 undecidable manual PN 153 0.0243 -1.33 0.3
--.MS1.Z. 1989-12-22T06:48:54.50 10.0 undecidable manual PN! 118 0.0241 -1.81 0
--.RDP.Z. 1989-12-22T06:48:52.70 10.0 undecidable manual SN 181 0.0113 -0.73 0.4
--.FG2.Z. 1989-12-22T06:48:49.30 10.0 undecidable manual PN 123 0.0193 0.18 1.5
--.SFI.Z. 1989-12-22T06:48:48.82 10.0 undecidable manual SN 323 0.01 -0.25 0.6
--.SGG.Z. 1989-12-22T06:48:47.00 10.0 undecidable manual PN 143 0.0181 -0.19 1.5
--.MSC.Z. 1989-12-22T06:48:46.60 10.0 undecidable manual PN 153 0.0183 -0.76 0.9
--.DUI.Z. 1989-12-22T06:48:45.52 10.0 undecidable manual PN 136 0.0166 0.74 0.9
--.RFI.Z. 1989-12-22T06:48:45.81 10.0 undecidable manual PN 151 0.0174 -0.27 1.4
--.BDI.Z. 1989-12-22T06:48:44.19 10.0 undecidable manual PN 304 0.0169 -1.12 0.5
--.MME.Z. 1989-12-22T06:48:44.76 10.0 negative manual PN 308 0.0171 -0.76 1.8
--.PII.Z. 1989-12-22T06:48:42.62 10.0 undecidable manual PN 293 0.0159 -1.16 0.4
--.AM8.Z. 1989-12-22T06:48:40.18 10.0 undecidable manual SN 48 0.0072 -1.67 0.1
--.SDI.Z. 1989-12-22T06:48:39.66 10.0 undecidable manual PN 149 0.0137 -0.64 1
--.RDP.Z. 1989-12-22T06:48:36.19 10.0 undecidable manual PN 181 0.0113 -0.57 1.1
--.MAO.Z. 1989-12-22T06:48:36.78 10.0 positive manual PN 243 0.012 -0.92 1.4
--.RMP.Z. 1989-12-22T06:48:35.50 10.0 undecidable manual PN 182 0.0108 -0.55 1.1
--.AZI.Z. 1989-12-22T06:48:34.89 10.0 undecidable manual PN 154 0.0103 -0.25 1.4
--.CP9.Z. 1989-12-22T06:48:34.30 10.0 undecidable manual PN 173 0.0104 -1.15 0.4
--.PGD.Z. 1989-12-22T06:48:34.23 10.0 positive manual PN 318 0.0103 -0.88 1.5
--.PRO.Z. 1989-12-22T06:48:33.10 10.0 undecidable manual PN 5 0.0081 1.31 0.3
--.SFI.Z. 1989-12-22T06:48:33.83 10.0 negative manual PN 323 0.01 -0.78 1.7
--.RSM.Z. 1989-12-22T06:48:33.53 10.0 negative manual PN 345 0.0084 1.27 0.7
--.MC8.Z. 1989-12-22T06:48:32.72 10.0 undecidable manual SG! 59 0.0049 -2.12 0
--.AQU.Z. 1989-12-22T06:48:31.87 10.0 undecidable manual PN 144 0.0073 1.28 0.3
--.AM8.Z. 1989-12-22T06:48:30.20 10.0 undecidable manual PN 48 0.0072 -0.42 1.3
--.ALP.Z. 1989-12-22T06:48:27.20 10.0 negative manual PG 112 0.0057 -0.92 1.4
--.MNS.Z. 1989-12-22T06:48:27.30 10.0 undecidable manual PG 185 0.0057 -0.78 0.9
--.MC8.Z. 1989-12-22T06:48:26.16 10.0 negative manual PG 59 0.0049 -0.23 2.9
--.ARV.Z. 1989-12-22T06:48:25.26 10.0 negative manual PG 14 0.0044 -0.2 2.9
--.CM8.Z. 1989-12-22T06:48:22.15 10.0 negative manual PG 57 0.0028 -0.39 2.6
--.ASS.Z. 1989-12-22T06:48:22.94 10.0 undecidable manual SG 295 0.0008 0.1 0.6
--.RM8.Z. 1989-12-22T06:48:22.58 10.0 negative manual PG 101 0.0029 -0.05 3
--.ASS.Z. 1989-12-22T06:48:20.92 10.0 undecidable manual PG 295 0.0008 1.45 0.2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download