Ismay, MT Live Doppler Radar

Live radar for Ismay, Custer County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.

Open live radar for Ismay What TALON shows

What weather hits Ismay?

Since 1996, the National Weather Service has logged damaging thunderstorm winds on 93 days in the Custer forecast zone and Custer County — the most common reported hazard around Ismay, mostly in July and June. Next come heavy snow & winter storms (52 days) and high winds (49 days).

Hazard	Days reported	Most recent	Worst on record
Damaging thunderstorm winds	93	Aug 2025	Jul 6, 2016 · 1 death
Heavy snow & winter storms	52	Mar 2026	—
High winds	49	May 2026	—
Flash flooding	16	May 2023	Jul 4, 1998 · $1.0 million damage
Blizzards	12	Dec 2022	—
Flooding	11	Jun 2025	May 20, 2011 · $1.1 million damage
Extreme cold & wind chill	3	Feb 2025	—
Ice storms & sleet	3	Jan 2009	—

Source: NOAA NCEI Storm Events Database, 1996–2026 (the latest year is partial). A "day" is a date with at least one report in the Custer forecast zone and Custer County; damage is as reported, not adjusted for inflation.

How much snow does Ismay get?

A normal year brings about 34 inches of snow to Ismay, based on NOAA's 1991–2020 climate normals for the Plevna weather station 14.3 miles away. The snowiest month is usually January (5.9 in).

Oct	Nov	Dec	Jan	Feb	Mar	Apr	May
2.0	4.1	5.0	5.9	5.6	5.4	4.8	1.3

Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.

Which radars cover Ismay?

The closest NEXRAD Doppler radar is KGGW (Glasgow, MT), about 146 miles northwest. Radar beams climb as they travel, so the height of the lowest scan over town decides how low in a storm the radar can see.

Radar	Distance	Lowest beam over Ismay	View
KGGW Glasgow, MT	146 mi northwest	17,300 ft	Limited — the beam overshoots the lowest part of storms
KBLX Billings, MT	188 mi west-southwest	26,300 ft	Limited — the beam overshoots the lowest part of storms
KUDX Rapid City, SD	190 mi south-southeast	26,800 ft	Limited — the beam overshoots the lowest part of storms

Beam height is the center of the 0.5° scan above the radar, with standard refraction. Mountains near a radar can block it further.

Tornado & hail history near Ismay

Since 1950, NOAA has recorded 5 tornadoes within 25 miles of Ismay, 3 of them EF2/F2 or stronger. Most came in July and June. The strongest was an F2 on July 18, 1962, which crossed near town. The most recent was an F2 on July 25, 2001, which touched down about 25 miles east of town.

Hail: 109 reports of 1-inch or larger hail within 25 miles since 1955, 17 of them 2 inches or more; the largest was 4.50-inch hail on July 3, 1969.

Source: NOAA Storm Prediction Center — tornadoes 1950–2025, hail 1955–2025. Distances are to each tornado's track; ratings before February 2007 use the original Fujita scale.

On TALON you get Ismay's live radar loop, rain/snow/ice colors, flash-flood risk, storm tracks with arrival times and NWS warnings free; close-up radar and rotation detection are part of TALON Pro.

Ismay radar FAQ

Where is the nearest weather radar to Ismay, MT?

KGGW (Glasgow, MT), about 146 miles northwest. KBLX (Billings, MT) is 188 miles away and also covers the area.

Does radar show snow in Ismay?

Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Ismay the lowest scan from KGGW is about 17,300 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.

Is TALON's radar for Ismay free?

Yes — the US radar loop, rain/snow/ice colors, flash-flood risk, storm tracks and NWS warnings are free in any browser. Close-up radar, rotation detection and longer forecasts are part of TALON Pro.

Should I rely on radar for my safety?

No app replaces official warnings. When the National Weather Service issues a warning for Ismay, follow it right away — see watch vs. warning.

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