Earthquakes in Jefferson County, Idaho
No earthquake of M1.5 or more has been recorded within 50 km (31 mi) of the centre of Jefferson County since 2016.
No earthquake of M1.5 or more was recorded within 50 km (31 mi) of the centre of Jefferson County in the last 24 hours.
- Last 24 hours
- 0
- Last 7 days
- 0
- Last 30 days
- 0
- Last 12 months
- 0
- Since 2016
- 0 earthquakes of M1.5 or more
- Nearest mapped fault
- Heise fault, 40 km from the centre to its surface trace
Latest quake, 24 hours and 7 days: the QuakeIndex database, which reads USGS every 30 seconds, read at ; 30 days and 12 months: the QuakeIndex catalogue, counted to · earthquakes of M1.5 or more within 50 km (31 mi) of the centre of Jefferson County · shaking is estimated for the centre with the intensity equation USGS Did You Feel It? uses
Every earthquake in Idaho in the last 24 hours →
Earthquakes are rare here
No earthquakes of M1.5 or larger have been recorded within 50 km in the 10 years of record we hold. There have been none in the last 7 days.
With so few, a QuakeIndex score — this week as a percentile of Jefferson County, Idaho's own weeks — would only say whether anything happened at all, so none is shown. That is a statement about Jefferson County, Idaho, not about our data.
USGS catalogue · updated
If you felt one
- Was that an earthquake? — checks what was recorded near you in the last hour
- Report what you felt to USGS — reports go to USGS, not to us, and they are what produces the intensity maps
- Expect aftershocks, and be ready to Drop, Cover, and Hold On if you feel one; if you are in a damaged building, go outside and move away from it (Ready.gov, FEMA; what to do during and after an earthquake)
QuakeIndex does not issue warnings or forecasts. For earthquake early warning see ShakeAlert and the MyShake app.
The last 30 days
Show these earthquakes on your own site: a free card with this strip and the latest quakes near Jefferson County, Idaho, for a local news site, school or neighborhood page.
Live · last 7 days
Latest earthquakes within 50 km
None within 50 km in the latest snapshot we hold; the full 7 days load from USGS as this page opens.
Source USGS · snapshot of
The last 7 days on the map
Open the full map — zoom anywhere, or find your own location →
The centre is 43.797, -112.319, the Census internal point of Jefferson County, Idaho from the US Census Bureau Gazetteer (2024). Activity on this page is measured within 50 km of it — the dashed circle.
Before 2016
The USGS record from 1900 to 2015 lists no earthquake of M5 or more within 50 km of the centre of Jefferson County, Idaho.
USGS ComCat, M5+ from 1900 to 2015. Epicentres of early earthquakes are estimates. This is the record, not a forecast.
Nearest mapped faults
- Heise fault, 40 km from the centre of Jefferson County, Idaho to its surface trace
- Lemhi fault, 44 km from the centre of Jefferson County, Idaho to its surface trace
- Beaverhead fault, 45 km from the centre of Jefferson County, Idaho to its surface trace
USGS Quaternary Fault and Fold Database, within 50 km. Near is not the same as on, and faults with no surface trace are not in it.
Be ready
Earthquakes cannot be predicted, here or anywhere, so the useful step is the one taken beforehand. The advice below is from the agencies responsible for it.
- Ready.gov: earthquakes (FEMA) — what to do before, during and after, including Drop, Cover, and Hold On
- Build a kit (FEMA) — water, food and supplies for several days; our summary
- USGS: preparedness — the hazard behind the advice, from the agency that records every quake on this page
- The Great ShakeOut — the yearly earthquake drill, with material for homes, schools and workplaces