Flash Flooding and Hail in Kansas, September 11 to 12, 1999

Name: Flash Flooding and Hail in Kansas, September 11 to 12, 1999
Start: 1999-09-11T16:40
End: 1999-09-12T01:00
Location: Kansas

September 11 to 12, 1999 · NWS DDC · 28 events in 11 counties and zones

14 hail, 12 thunderstorm wind, 2 flash flood, as filed by the National Weather Service.

Where it happened

Every event with a place to put it; 2 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

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 28

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 Goodland radar (KGLD), 104 km away, was scanning. The volume nearest the first event began at 22:40 UTC.

Open the radar archive at this moment

Event by event

14 hail, 12 thunderstorm wind, 2 flash flood. Local standard time, as filed.

Hail, Scott

When: September 11, 4:40 PM CST
Where: Scott County, 13 mi N of Scott City
Measured: 1 in hail
Reported by: TRAINED SPOTTER
Coordinates: 38.670, -100.900

Hail, Hamilton

When: September 11, 5:05 PM CST
Where: Hamilton County, Syracuse
Measured: 1 in hail
Reported by: GENERAL PUBLIC
Coordinates: 37.980, -101.750

Thunderstorm Wind, Hamilton

When: September 11, 5:05 PM CST
Where: Hamilton County, Syracuse
Measured: 52 kt (60 mph)
Reported by: GENERAL PUBLIC
Coordinates: 37.980, -101.750

Hail, Kearny

When: September 11, 5:07 PM CST
Where: Kearny County, 16 mi NW of Lakin
Measured: 0.75 in hail
Reported by: GENERAL PUBLIC
Coordinates: 38.120, -101.450

Hail, Hamilton

When: September 11, 5:15 PM CST
Where: Hamilton County, 21 mi NW of Syracuse
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 38.200, -102.020

Thunderstorm Wind, Kearny

When: September 11, 5:18 PM CST
Where: Kearny County, Lakin to 17 mi SW of Lakin
Measured: 53 kt (61 mph)
Reported by: TRAINED SPOTTER
Coordinates: 37.780, -101.470

Hail, Kearny

When: September 11, 5:35 PM CST
Where: Kearny County, 15 mi SW of Lakin
Measured: 1.25 in hail
Reported by: TRAINED SPOTTER
Coordinates: 37.800, -101.450

Thunderstorm Wind, Grant

When: September 11, 5:55 PM CST
Where: Grant County, 8 mi NE of Ulysses
Measured: 61 kt (70 mph)
Reported by: GENERAL PUBLIC
Coordinates: 37.670, -101.270

Hail, Finney

When: September 11, 6:10 PM CST
Where: Finney County, 6 mi SSW of Garden City
Measured: 0.75 in hail
Reported by: GENERAL PUBLIC
Coordinates: 37.880, -100.920

Thunderstorm Wind, Grant

When: September 11, 6:35 PM CST
Where: Grant County, 13 mi SE of Ulysses
Measured: 52 kt (60 mph)
Reported by: TRAINED SPOTTER
Coordinates: 37.450, -101.200

Thunderstorm Wind, Haskell

When: September 11, 7:00 PM CST
Where: Haskell County, 8 mi N of Sublette
Measured: 52 kt (60 mph)
Reported by: GENERAL PUBLIC
Coordinates: 37.600, -100.850

Thunderstorm Wind, Seward

When: September 11, 7:10 PM CST
Where: Seward County, 16 mi NNW of Liberal
Measured: 56 kt (64 mph)
Reported by: GENERAL PUBLIC
Coordinates: 37.250, -101.050

Five to six inch tree limbs down.

Thunderstorm Wind, Haskell

When: September 11, 7:10 PM CST
Where: Haskell County, 3 mi WSW of Satanta
Measured: 52 kt (60 mph)
Reported by: GENERAL PUBLIC
Coordinates: 37.420, -101.030

Thunderstorm Wind, Haskell

When: September 11, 7:25 PM CST
Where: Haskell County, 9 mi SE of Sublette
Measured: 69 kt (79 mph)
Reported by: GENERAL PUBLIC
Coordinates: 37.380, -100.730

80 MPH wind blew 4 inch limbs down.

Hail, Meade

When: September 11, 7:25 PM CST
Where: Meade County, 20 mi NW of Meade
Measured: 0.75 in hail
Reported by: GENERAL PUBLIC
Coordinates: 37.480, -100.580

Thunderstorm Wind, Meade

When: September 11, 7:25 PM CST
Where: Meade County, 20 mi NW of Meade
Measured: 52 kt (60 mph)
Reported by: GENERAL PUBLIC
Coordinates: 37.480, -100.580

Two inch limbs down.

Hail, Seward

When: September 11, 7:50 PM CST
Where: Seward County, 2 mi N of Liberal
Measured: 0.75 in hail
Reported by: GENERAL PUBLIC
Coordinates: 37.070, -100.930

Thunderstorm Wind, Pawnee

When: September 11, 8:15 PM CST
Where: Pawnee County, 6 mi NE of Larned
Measured: 52 kt (60 mph)
Reported by: TRAINED SPOTTER
Coordinates: 38.250, -99.020

Two inch diameter limbs down and shed door blown off.

Thunderstorm Wind, Meade

When: September 11, 8:45 PM CST
Where: Meade County, Meade
Measured: 56 kt (64 mph)
Reported by: LAW ENFORCEMENT
Coordinates: 37.280, -100.330

Hail, Stevens

When: September 11, 8:50 PM CST
Where: Stevens County, 6 mi SW of Moscow
Measured: 0.75 in hail
Reported by: GENERAL PUBLIC
Coordinates: 37.270, -101.280

Thunderstorm Wind, Meade

When: September 11, 8:55 PM CST
Where: Meade County, 16 mi S of Meade
Measured: 52 kt (60 mph)
Reported by: TRAINED SPOTTER
Coordinates: 37.050, -100.330

Two inch diameter limbs down.

Hail, Seward

When: September 11, 10:51 PM CST
Where: Seward County, 13 mi NNW of Liberal
Measured: 0.75 in hail
Reported by: GENERAL PUBLIC
Coordinates: 37.200, -101.020

Hail, Stevens

When: September 11, 11:05 PM CST
Where: Stevens County, 7 mi NW of Hugoton
Measured: 1 in hail
Reported by: GENERAL PUBLIC
Coordinates: 37.250, -101.430

Flash Flood, Stevens

When: September 11, 11:08 PM CST
Where: Stevens County, Moscow
Reported by: LAW ENFORCEMENT
Coordinates: 37.192, -101.312 (the zone’s center; the record gives no point)

Water was reported over several raods.

Hail, Stevens

When: September 11, 11:26 PM CST
Where: Stevens County, 1 mi E of Woods
Measured: 2 in hail
Reported by: GENERAL PUBLIC
Coordinates: 37.170, -101.080

Hail, Meade

When: September 12, 12:00 AM CST
Where: Meade County, 13 mi SSW of Meade
Measured: 0.75 in hail
Reported by: GENERAL PUBLIC
Coordinates: 37.120, -100.420

Hail, Morton

When: September 12, 12:00 AM CST
Where: Morton County, 2 mi N of Rolla
Measured: 1 in hail
Reported by: GENERAL PUBLIC
Coordinates: 37.150, -101.630

Flash Flood, Seward

When: September 12, 1:00 AM CST
Where: Seward County, Liberal
Reported by: LAW ENFORCEMENT
Coordinates: 37.193, -100.851 (the zone’s center; the record gives no point)

Intersection of Highways 54 and 83 was closed due to flooding.

What these are

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.
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

Every storm in Kansas in 1999 Every state in 1999 This day in weather history Warnings in Kansas, September 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: 5718250, 5718251, 5718252, 5718253, 5718254, 5718255, 5718256, 5718257, 5718258, 5718259, 5718260, 5718261, 5718262, 5716615, 5718263, 5718264, 5716616, 5716617, 5716618, 5716619, 5716620, 5716621, 5716622, 5716623, 5716734, 5716735, 5716736, 5716737.