Moderate mag. 4.0 earthquake - 10.1 mi south of Whitehall, Jefferson County, Montana, USA, on 2016-09-03 17:44:13 -06:00

Moderate mag. 4.0 earthquake - 10.1 mi south of Whitehall, Jefferson County, Montana, USA, on 2016-09-03 17:44:13 -06:00 Moderate mag. 4.0 earthquake - 10.1 mi south of Whitehall, Jefferson County, Montana, USA, on 2016-09-03 17:44:13 -06:00

Moderate magnitude 4.0 earthquake at 8 km depth

4 Sep 02:16 UTC: First to report: USGS after 2 hours and 32 minutes.
Hypocenter depth recalculated from 1.5 to 8.0 km.

Earthquake details

Date & timeSep 3, 2016 23:44:13 UTC
Local time at epicenter2016-09-03 17:44:13 -06:00
Depth8.0 km
Epicenter latitude / longitude45.7253°N / 112.1262°W (Madison, Montana, United States)
Antipode45.725°S / 67.874°E
Shaking intensityLight shaking
Felt3 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoYellowstone (184 km / 114 mi)
Nearby towns and cities16 km (10 mi) S of Whitehall (pop: 1,090) | Show on map | Quakes nearby
44 km (28 mi) SE of Butte (pop: 34,200) | Show on map | Quakes nearby
46 km (28 mi) ESE of Butte-Silver Bow (Balance) (pop: 33,500) | Show on map | Quakes nearby
48 km (30 mi) WSW of Three Forks (pop: 1,930) | Show on map | Quakes nearby
57 km (35 mi) S of Boulder (pop: 1,210) | Show on map | Quakes nearby
63 km (39 mi) WSW of Manhattan (pop: 1,630) | Show on map | Quakes nearby
69 km (43 mi) NE of Dillon (pop: 4,210) | Show on map | Quakes nearby
85 km (53 mi) W of Bozeman (pop: 43,400) | Show on map | Quakes nearby
97 km (60 mi) S of Helena (Lewis and Clark County) (pop: 30,600) | Show on map | Quakes nearby
Estimated seismic energy released6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 tons of TNT) | about seismic energy
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Data for the same earthquake reported by different agencies

Info: 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.
4.08 km- 17km S of Whitehall, MontanaUSGS
shake map
(shakemap: USGS)

User reports for this quake (4)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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waterloo / Moderate shaking (MMI V) : was standing outside heard loud boom then felt ground shake for about 5 seconds and heard windows rattling on house noticed power lines and poles moving.   
Eureka, MT / Light shaking (MMI IV) : I woke up to a light shake and the sound of a lamp rocking.   
Whitehall (17.4 km N of epicenter) [Map] / Light shaking (MMI IV) : Loud rumbling Tremors shaking large house!  
Helena (United States, 96 km N of epicenter) : Felt a small quick rocking while sitting at the desk in a chair with wheels, the chair was still at that moment. (reported through EMSC)  
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