Hail, Cochran
- When
- May 1, 2:55 PM CST
- Where
- Cochran County, Bledsoe
- Measured
- 1.75 in hail
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 33.620, -103.020
Tornadoes and Flash Flood in Texas, May 1, 1999
5 tornado, 4 hail, 1 flash flood, as filed by the National Weather Service.
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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 10
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.
The radar
The Lubbock radar (KLBB), 112 km away, was scanning. The volume nearest the first event began at 20:53 UTC.
Event by event
5 tornado, 4 hail, 1 flash flood. Local standard time, as filed.
Tornado, Castro
- When
- May 1, 5:09 PM CST
- Where
- Castro County, 4 mi N of Sunnyside
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 100 yd
- Reported by
- TRAINED SPOTTER
- Coordinates
- 34.400, -102.300
A brief tornado touchdown in open county was reported by trained storm spotters. No survey was conducted.
Tornado, Castro
- When
- May 1, 5:18 PM CST
- Where
- Castro County, 5 mi SSE of Dimmitt
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 30 yd
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 34.480, -102.280
A brief tornado touchdown in open country was reported by law enforcement officials and by storm spotters. No survey was conducted.
Flash Flood, Castro
- When
- May 1, 7:00 PM CST to 8:30 PM CST
- Where
- Castro County, Dimmitt
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 34.530, -102.262 (the zone’s center; the record gives no point)
Highway 385 was reported flooded and was eventually closed between Dimmitt and Sunnyside. Several vehicles were stranded in the flood waters. The road remained closed for five days.
Hail, Castro
- When
- May 1, 7:09 PM CST
- Where
- Castro County, Nazareth
- Measured
- 1.75 in hail
- Reported by
- BROADCAST MEDIA
- Coordinates
- 34.550, -102.100
Tornado, Lamb
- When
- May 1, 7:42 PM CST
- Where
- Lamb County, 6 mi S of Olton
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 30 yd
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 34.100, -102.130
A brief tornado touchdown in open country was reported by the Olton Fire Department. No survey was conducted.
Tornado, Lamb
- When
- May 1, 7:43 PM CST to 7:44 PM CST
- Where
- Lamb County, 6 mi S of Olton
- Rating
- F0
- Path length
- 0.1 mi
- Path width
- 30 yd
- Reported by
- FIRE DEPT/RESCUE SQUAD
- Coordinates
- 34.100, -102.130
Another brief tornado touchdown in open country was reported. No survey was conducted.
Tornado, Hale
- When
- May 1, 7:43 PM CST to 7:45 PM CST
- Where
- Hale County, 6 mi W of Halfway
- Rating
- F0
- Path length
- 0.2 mi
- Path width
- 30 yd
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 34.180, -102.050
A tornado touched down and remained in open country for several minutes. No survey was conducted.
Hail, Lamb
- When
- May 1, 7:45 PM CST
- Where
- Lamb County, Olton
- Measured
- 2.75 in hail
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 34.180, -102.130
Golfball to baseball size hail was reported.
Hail, Swisher
- When
- May 1, 8:21 PM CST
- Where
- Swisher County, 5 mi S of Tulia
- Measured
- 0.75 in hail
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 34.470, -101.770
Dime size hail was reported on I-27 between Tulia and Kress.
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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.
- 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.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- High Wind in New Mexico, May 1, 1999
- Flooding in Colorado, May 1 to 5, 1999
- Drought in Georgia, May 1 to 31, 1999
- Flooding in Colorado, May 1 to 3, 1999
- Tornado and Flash Flood in Texas, May 1, 1999
- Drought in Virginia, May 1 to 31, 1999
- Drought in New Jersey, May 1 to 31, 1999
- Drought in West Virginia, May 1 to 31, 1999
- Drought in Maryland, May 1 to 31, 1999
- Tornado and Flash Flooding in Texas, May 1 to 2, 1999
- Drought in Pennsylvania, May 1 to 31, 1999
- Drought in West Virginia, May 1 to 31, 1999
More
Every storm in Texas in 1999Every state in 1999This day in weather historyThe tornado archive for Texas, 1999Warnings in Texas, May 1999
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: 5698135, 5698137, 5698138, 5698139, 5698140, 5698136, 5698143, 5698144, 5698141, 5698142.