Montana, 1999Tornado and Hail in Montana, August 14, 1999
August 14, 1999 · NWS BYZ · 4 events in 2 counties and zones
1 tornado, 1 funnel cloud, 1 hail, 1 thunderstorm wind, as filed by the National Weather Service.
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
Open the live radar over this ground
- Deaths
- 0
- Injuries
- 0
- Property damage
- $1,000
- 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.
Event by event
1 tornado, 1 funnel cloud, 1 hail, 1 thunderstorm wind. Local standard time, as filed.
Tornado, Wheatland
- When
- August 14, 8:15 PM MST to 8:30 PM MST
- Where
- Wheatland County, Harlowton to 12 mi NNE of Harlowton
- Rating
- F0
- Path length
- 5 mi
- Path width
- 5 yd
- Reported by
- AMATEUR RADIO
- Coordinates
- 46.600, -109.720
A driver on U.S. Highway 191 and an amateur radio operator reported a thin rope like tornado that was on the ground over rural areas for around 15 minutes.
Funnel Cloud, Wheatland
- When
- August 14, 8:21 PM MST
- Where
- Wheatland County, 8 mi NW of Harlowton
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 46.466, -109.844 (the zone’s center; the record gives no point)
Wheatland sheriff dispatch reported two funnel clouds.
Hail, Wheatland
- When
- August 14, 8:40 PM MST
- Where
- Wheatland County, Living Spgs
- Measured
- 1 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 46.600, -109.530
Spotter report of quarter size hail.
Thunderstorm Wind, Musselshell
- When
- August 14, 9:45 PM MST
- Where
- Musselshell County, 20 mi N of Roundup
- Measured
- 52 kt (60 mph)
- Property damage
- $1,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 46.730, -108.530
Wind gusts to 60 mph damaged several large construction signs.
- Tornado
- A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
- Funnel Cloud
- A rotating column of cloud extending from a thunderstorm that did not reach the ground.
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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.
- Tornado in Montana, August 14, 19993 injured · $4.0 million · F2 · 1 event
- Lightning Strike in New Jersey, August 14, 19991 death · 6 injured · 1 event
- Damaging Wind in Louisiana, August 14, 19991 death · $20,000 · 1 event
- Heat in Texas, August 14, 19991 death · 1 event
- Damaging Wind in Louisiana, August 14, 19991 death · $1,000 · 1 event
- Tornado and Damaging Winds in Maryland, August 14, 19992 injured · $1.0 million · F1 · 15 events
- Hail and Damaging Winds in Florida, August 14, 1999$777,000 · 0.75 in hail · 9 events
- Damaging Winds and Lightning Strike in Virginia, August 14, 1999$365,000 · 68 kt wind · 13 events
- Damaging Wind in Mississippi, August 14, 19992 injured · $50,000 · 1 event
- Lightning Strikes in North Carolina, August 14, 19996 injured · 2 events
- Damaging Winds in Georgia, August 14, 1999$80,000 · 5 events
- Damaging Winds and Lightning Strikes in Georgia, August 14, 1999$65,000 · 6 events
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: 5710984, 5710983, 5710985, 5710986.