Ismay Jail

Listed on the National Register of Historic Places in 1997.

From the record

“The Ismay Jail is a National Registered Historic Place located in Ismay, Montana. It was added to the Register on June 4, 1997.”
Wikipedia article Ismay Jail, CC BY-SA 4.0.

One of 18 National Register listings published here for Custer County · listed in 1997 · category: Building.

Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

The listing

What is counted as historic. The nomination lists 1 building as contributing to the listing.
Address. Jailhouse Rd., W of jct. with East St., Ismay, 59336
When was it listed? June 1997
Category. building
Census division. Shirley-Ismay
National Register reference number. 97000501 - the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.

Fires near this property

3 since 2008

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 3 fires within 5 miles of Ismay Jail between 2008 and 2020, burning about 496 acres in total. None started naturally. None was recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.

Reported cause	Fires
Equipment and vehicle use	3

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

Date	Cause	Size	Reported by	Name on the report
20 August 2020	Equipment and vehicle use	9.2 acres	Custer County	LONE - CUSTER
18 August 2008	Equipment and vehicle use	320 acres	Miles City Field Office	KEYSTONE
10 August 2020	Equipment and vehicle use	168 acres	Miles City Field Office	PENNEL CREEK

Every fire recorded in Custer County

Storms near this property

21 since 1999

Regional context, not property-specific evidence. The National Weather Service names Ismay, the town this property stands in, in 21 storm reports between 1999 and 2025: 17 hail, 3 thunderstorm wind, 1 flash flood. No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office filed it, from the NOAA Storm Events Database, and each date opens the federal record of that event.

When	Event	Place named	Harm	What the report says
July 2025	Hail	Ismay	-	Measured hail.
July 2025	Hail	Ismay	-	Quarter size hail reported.
June 2015	Hail	Ismay	-	A spotter reported golf ball size hail with windows knocked out of the house.
August 2011	Thunderstorm Wind	Ismay	-	Winds were estimated at 60-70 mph accompanied by half inch hail. Large trees were missing limbs and leaves.
June 2010	Hail	Ismay	-	Wind gusts of 60 mph were estimated 3 miles northeast of Ismay with 4 diameter tree branches down.
July 2004	Flash Flood	Ismay	-	Flash flooding occurred on several creeks and small drainages. No damage reported. Floodingoccurred from 720 pm to 830 pm.
July 2004	Hail	Ismay	-	Quarter sized hail fell along with 70 mph winds.
May 1999	Hail	Ismay	-	Nickel size hail was reported in Ismay.
June 2014	Hail	Ismay	-	no account filed
June 2014	Hail	Ismay	-	no account filed
June 2014	Hail	Ismay	-	no account filed
June 2010	Thunderstorm Wind	Ismay	-	no account filed
June 2007	Hail	Ismay	-	no account filed
June 2006	Hail	Ismay	-	no account filed
June 2005	Thunderstorm Wind	Ismay	-	no account filed
May 2005	Hail	Ismay	-	no account filed
July 2005	Hail	Ismay	-	no account filed
June 2001	Hail	Ismay	-	no account filed
June 2001	Hail	Ismay	-	no account filed
June 2001	Hail	Ismay	-	no account filed
July 2001	Hail	Ismay	-	no account filed

Every storm recorded in Custer County

Map coverage status

No historic map-sheet match is published for this property yet. That does not mean no map exists. This record needs a coordinate-quality review before it can be joined to a sheet boundary. Browse the county's mapped places while that work is pending.

Sources for this property

National Archives record	The nomination case file for reference 97000501 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
Custer County	All 18 listed properties in this county.

Provenance

Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.