Hail, Llano
- When
- May 11, 4:58 PM CST to 5:10 PM CST
- Where
- Llano County, Castell
- Measured
- 2.5 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 30.700, -98.950
Flash Flood and Hail in Texas, May 11, 1999
General 1 to 2 inch rainfall with isolated totals of up to 4 inches redeveloped flash flooding over much of Llano County.
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
- $10,000
- Crop damage
- None recorded
- Events
- 3
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 EWX wrote it up.
General 1 to 2 inch rainfall with isolated totals of up to 4 inches redeveloped flash flooding over much of Llano County. The soils had remained saturated from the previous day's rainfall and flooding
The radar
The Austin/San Antonio radar (KEWX), 142 km away, was scanning. The volume nearest the first event began at 22:55 UTC.
Event by event
2 hail, 1 flash flood. Local standard time, as filed.
Flash Flood, Llano
- When
- May 11, 5:30 PM CST to 7:00 PM CST
- Where
- Llano County, Countywide
- Property damage
- $10,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 30.706, -98.684 (the zone’s center; the record gives no point)
Hail, Llano
- When
- May 11, 5:35 PM CST to 5:45 PM CST
- Where
- Llano County, Castell
- Measured
- 1.5 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 30.700, -98.950
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.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Flash Flood in Texas, May 11, 1999
- Tornado and Hail in Texas, May 11, 1999
- Tornadoes and Flash Flooding in Oklahoma, May 11 to 12, 1999
- Flash Flood and Hail in Texas, May 11 to 12, 1999
- Damaging Wind in Louisiana, May 11, 1999
- Flash Flood and Damaging Wind in Texas, May 11, 1999
- Heavy Snow in Montana, May 11 to 12, 1999
- Hail and Lightning Strike in Kansas, May 11, 1999
- Hail in Florida, May 11, 1999
- Flash Flood and Hail in Texas, May 11, 1999
- Damaging Winds in Arkansas, May 11, 1999
- Hail in Texas, May 11, 1999
More
Every storm in Texas in 1999Every state in 1999This day in weather historyWarnings 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: 5695751, 5695752, 5695753.