Montana, 1998

Hail in Montana, May 20, 1998

May 20, 1998 · NWS BYZ · 4 events in 1 county or zone

A thunderstorm produced dime to nickel sized hail as it moved northeast over Western Custer County. A funnel cloud was spotted by the Miles City airport observers as the thunderstorm moved over the airport.

Where it happened

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
4

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS BYZ wrote it up.

A thunderstorm produced dime to nickel sized hail as it moved northeast over Western Custer County. A funnel cloud was spotted by the Miles City airport observers as the thunderstorm moved over the airport.

The radar

The national radar mosaic for the moment the first event began.

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Event by event

3 hail, 1 funnel cloud. Local standard time, as filed.

Hail, Custer

When
May 20, 6:15 PM MST
Where
Custer County, 21 mi SW of Miles City
Measured
0.88 in hail
Coordinates
46.180, -106.150

Hail, Custer

When
May 20, 6:26 PM MST
Where
Custer County, 10 mi SW of Miles City
Measured
0.75 in hail
Coordinates
46.300, -105.980

Funnel Cloud, Custer

When
May 20, 6:26 PM MST to 6:35 PM MST
Where
Custer County, Miles City Arpt
Coordinates
46.253, -105.572 (the zone’s center; the record gives no point)

Hail, Custer

When
May 20, 6:29 PM MST
Where
Custer County, Miles City Arpt
Measured
0.75 in hail
Coordinates
46.430, -105.880

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Funnel Cloud
A rotating column of cloud extending from a thunderstorm that did not reach the ground.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Montana in 1998Every state in 1998This day in weather historyWarnings in Montana, May 1998

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5643244, 5643245, 5643246, 5643247.