Montana, 1998

Flash Flood and Hail in Montana, June 23, 1998

June 23, 1998 · NWS BYZ · 4 events in 3 counties and zones

A cluster of thunderstorms produced large hail over Carter and Fallon Counties in southeastern Montana. Flash flooding was reported south of Baker as a creek overflowed its banks.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
$50,000
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 cluster of thunderstorms produced large hail over Carter and Fallon Counties in southeastern Montana. Flash flooding was reported south of Baker as a creek overflowed its banks. Wind gusts to 56 mph in Powder River County produced several thousand dollars of property damage in the Broadus area. Roofs were blown off of several buildings and residences, a barn was blown down and a greenhouse was damaged.

The radar

The Rapid City radar (KUDX), 203 km away, was scanning. The volume nearest the first event began at 21:56 UTC.

Open the radar archive at this moment

Event by event

2 hail, 1 flash flood, 1 thunderstorm wind. Local standard time, as filed.

Hail, Carter

When
June 23, 2:55 PM MST
Where
Carter County, 4 mi S of Belltower
Measured
1.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
45.580, -104.380

Hail, Fallon

When
June 23, 4:25 PM MST
Where
Fallon County, 10 mi N of Baker
Measured
1 in hail
Reported by
LAW ENFORCEMENT
Coordinates
46.520, -104.280

Flash Flood, Fallon

When
June 23, 4:25 PM MST to 7:45 PM MST
Where
Fallon County, Baker
Reported by
LAW ENFORCEMENT
Coordinates
46.334, -104.417 (the zone’s center; the record gives no point)

Thunderstorm Wind, Powder River

When
June 23, 5:00 PM MST to 5:20 PM MST
Where
Powder River County, Broadus
Property damage
$50,000
Reported by
LAW ENFORCEMENT
Coordinates
45.450, -105.420

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

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, June 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: 5649835, 5649836, 5649837, 5649838.