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Mag. 4.7 earthquake - 29 km north of Bolzano, Bozen, Trentino-Alto Adige, Italy, on Tuesday, Jul 17, 2001, at 05:06 pm (Rome time)

A strong magnitude 4.7 earthquake hit 29 km (18 mi) away from Bolzano, Trentino-Alto Adige,  Italy, in the afternoon of Tuesday, Jul 17, 2001 at 5.06 pm local time (Europe/Rome GMT +2). The quake had a very shallow depth of 10 km (6 mi) .

Mag. 4.7 earthquake - 29 km north of Bolzano, Bozen, Trentino-Alto Adige, Italy, on Tuesday, Jul 17, 2001, at 05:06 pm (Rome time) Mag. 4.7 earthquake - 29 km north of Bolzano, Bozen, Trentino-Alto Adige, Italy, on Tuesday, Jul 17, 2001, at 05:06 pm (Rome time)

Moderate magnitude 4.7 earthquake at 10 km depth

Earthquake details

Date & timeJul 17, 2001 15:06:15 UTC
Local time at epicenterTuesday, Jul 17, 2001, at 05:06 pm (Europe/Rome GMT +2)
Depth10.0 km
Epicenter latitude / longitude46.735°N / 11.201°E Bozen, Trentino-Alto Adige, Italy
Also near: Austria 13.9 km (9 mi) away | Switzerland 56 km (35 mi) away | Germany 74 km (46 mi) away
Seismic antipode46.735°S / 168.799°W
Shaking intensityModerate shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Estimated seismic energy released7.1 x 1011 joules (197 megawatt hours, equivalent to 169 tons of TNT) | about seismic energy
Interactive map
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Nearby places

The closest larger town where the quake might have been felt is Bolzano, a town with 99,000 inhabitants in Italy, in 29 km (18 mi) distance south of the epicenter. People likely experienced light shaking there. Several smaller towns and villages are located closer to the epicenter and might have experienced stronger shaking. In the capital of  Italy, Rome, 549 km (341 mi) away from the epicenter, the earthquake could not be felt.
The following table shows some of the places that might have been affected (or not) by the shaking.
Distance Place Max. shaking intensity(*) Region Country
6 km (4 mi)
N of epicenter
St Martin in Passeier
(pop: 1,780)
V: Moderate
Bozen, Trentino-Alto Adige
8 km (5 mi)
SW of epicenter
(pop: 33,500)
V: Moderate
Bozen, Trentino-Alto Adige
18 km (11 mi)
SW of epicenter
(pop: 4,020)
IV: Light
Bozen, Trentino-Alto Adige
29 km (18 mi)
S of epicenter
(pop: 99,000)
IV: Light
Bozen, Trentino-Alto Adige
35 km (22 mi)
E of epicenter
Brixen in Südtirol
(pop: 15,900)
IV: Light
Bozen, Trentino-Alto Adige
36 km (22 mi)
S of epicenter
(pop: 10,700)
IV: Light
Bozen, Trentino-Alto Adige
74 km (46 mi)
S of epicenter
(pop: 80,400)
III: Weak
Province of Trente, Trentino-Alto Adige
95 km (59 mi)
S of epicenter
(pop: 34,200)
III: Weak
Province of Trente, Trentino-Alto Adige
549 km (341 mi)
S of epicenter
(pop: 2,318,900)
I: Not felt
(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.

User-reports for this quake

There are no user reports for this quake yet.

If you felt it, be the first to report it!
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake.

Compare Quake Data

Data for the same earthquake as reported by different agencies

The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Mag Depth Time GMT
Epicenter Agency
4.7 10 km
6.2 mi
15:06:15 Northern Italy USGS (United States Geological Survey)
5.2 5 km
3.1 mi
15:06:16 Northern Italy
3.6 km (2.2 mi) epicenter difference with USGS
EMSC (European-Mediterranean Seismological Centre)
(*) A depth given as 10 km often means that the the depth of the quake could not determined with sufficient accuracy.


Seismic station: Ofenpass-Fuorn, GR (FUORN/CH network) | Distance from quake: 73 km / 45 mi | Show on map | Station Info
Seismic station Ofenpass-Fuorn, GR: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.2-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
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Aftershocks for this quake

No aftershocks have been recorded so far. When aftershocks are detected, we will update this section.

What are aftershocks?

Larger earthquakes (above magnitude 5 or so) such as this one are usually followed by smaller ones known as aftershocks that occur in the same area during the days, weeks, months or even years after the main shock.
[More info]

What about this quake?

Based on its magnitude, the fault that was active during the quake likely ruptured beneath a surface of approx. 5 km2 (=2 sqare miles) as a first-order estimate. The length of the rupture zone thus was probably around 4 km (2 mi).
[More info]

Recorded aftershocks, latest first (0 quake)

Date and Time GMTMag
Jul 17, 2001 05:06 pm (Rome)
23 years ago

10 km
0 km - This quake29 km N of Bolzano, Bozen, Trentino-Alto Adige, Italy
Main Shock (this quake)

Map of aftershocks

Earthquake statistics

Average number of earthquakes

Based on data from the past 10 years and our earthquake archive back to 1900, there are about 4,200 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):
  • Mag. 5 or higher: 0.02 quakes per year (or 1 quake every 55.6 years)
  • Mag. 4 or higher: 0.61 quakes per year (or 1 quake every 1.6 years)
  • Mag. 3 or higher: 4.7 quakes per year
  • Mag. 2 or higher: 37.3 quakes per year
  • Mag. 1 or higher: 250 quakes per year (or 20.9 quakes per month)
The area where this quake occurred has a moderate level of seismic activity. However, It has had at least 33 quakes above magnitude 4 since 1970, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 1 to 5 years.

Number of quakes per year

Previous quakes in the same area of this earthquake

Map of earlier quakes in the area of this quake

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Map to embed or share

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