Tornadoes and Flash Flooding in Oklahoma, April 22, 1999

Name: Tornadoes and Flash Flooding in Oklahoma, April 22, 1999
Start: 1999-04-22T14:20
End: 1999-04-22T21:29
Location: Oklahoma

April 22, 1999 · NWS TSA · 51 events in 16 counties and zones

Where it happened

Every event with a place to put it; 6 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: $15,000
Crop damage: None recorded
Events: 51

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 TSA wrote it up.

Summary of events for April 22 1999:A cold front moved southeast out of Kansas into northeast Oklahoma on the afternoon of April 22. A broken line of thunderstorms formed along the front and quickly became severe as the front continued a steady southeast push. The front slowed down as it neared the I-40 corridor, causing some training thunderstorms and minor flash flooding. These thunderstorms contained the full spectrum of severe weather, from golfball-sized hail to damaging winds to several touchdowns of weak tornadoes.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

30 hail, 10 thunderstorm wind, 5 tornado, 4 flash flood, 1 funnel cloud, 1 lightning. Local standard time, as filed.

Thunderstorm Wind, Osage

When: April 22, 2:20 PM CST
Where: Osage County, 3 mi E of Bowring
Measured: 52 kt (60 mph)
Reported by: PARK/FOREST SERVICE
Coordinates: 36.880, -96.070

60 mph winds at Wah-Sha-She State Park knocked down power lines.

Thunderstorm Wind, Washington

When: April 22, 2:42 PM CST
Where: Washington County, Copan
Measured: 52 kt (60 mph)
Reported by: OTHER FEDERAL AGENCY
Coordinates: 36.900, -95.930

There were two reports of strong winds from far northern Washington County. They were: 1) 60 mph gust at Copan and 2) tin was blown off of a barn roof 6 miles northeast of Dewey.

Thunderstorm Wind, Nowata

When: April 22, 2:42 PM CST
Where: Nowata County, 6 mi NE of Lenapah
Measured: 52 kt (60 mph)
Reported by: UNKNOWN
Coordinates: 36.920, -95.550

Hail, Nowata

When: April 22, 3:10 PM CST to 3:15 PM CST
Where: Nowata County, Lenapah to 2 mi E of Lenapah
Measured: 2.75 in hail
Reported by: FIRE DEPT/RESCUE SQUAD
Coordinates: 36.850, -95.600

There were several reports of extremely large hail from Nowata County. First, there were two reports of baseball-sized hail 2 and 3 miles east of Lenapah at 415 PM CDT, while another report noted golfball-sized hail between Nowata and Coffeyville at 410 PM CDT.

Hail, Craig

When: April 22, 3:55 PM CST
Where: Craig County, Centralia
Measured: 1 in hail
Reported by: GENERAL PUBLIC
Coordinates: 36.800, -95.350

Thunderstorm Wind, Craig

When: April 22, 4:15 PM CST
Where: Craig County, Bluejacket
Measured: 52 kt (60 mph)
Reported by: GENERAL PUBLIC
Coordinates: 36.800, -95.070

Hail, Craig

When: April 22, 4:15 PM CST
Where: Craig County, Bluejacket
Measured: 1 in hail
Reported by: GENERAL PUBLIC
Coordinates: 36.800, -95.070

Hail, Ottawa

When: April 22, 4:20 PM CST
Where: Ottawa County, 2 mi NE of Afton
Measured: 1 in hail
Reported by: TRAINED SPOTTER
Coordinates: 36.720, -94.930

Hail, Tulsa

When: April 22, 4:32 PM CST to 4:38 PM CST
Where: Tulsa County, Tulsa
Measured: 1 in hail
Reported by: BROADCAST MEDIA
Coordinates: 36.150, -95.950

Location: near intersection of US Hwy 75 and OK Hwy 11

Hail, Delaware

When: April 22, 4:35 PM CST
Where: Delaware County, Bernice
Measured: 0.75 in hail
Reported by: GENERAL PUBLIC
Coordinates: 36.620, -94.920

Thunderstorm Wind, Craig

When: April 22, 4:35 PM CST
Where: Craig County, 3 mi SW of Vinita
Measured: 52 kt (60 mph)
Reported by: DEPT OF HIGHWAYS
Coordinates: 36.620, -95.180

Location: Big Cabin toll plaza on Rogers Turnpike

Hail, Ottawa

When: April 22, 4:37 PM CST
Where: Ottawa County, Afton
Measured: 0.88 in hail
Reported by: LAW ENFORCEMENT
Coordinates: 36.700, -94.970

Hail, Delaware

When: April 22, 4:50 PM CST to 4:55 PM CST
Where: Delaware County, 8 mi NE of Grove
Measured: 1.75 in hail
Reported by: EMERGENCY MANAGER
Coordinates: 36.670, -94.670

Location: on the Delaware/Ottawa County line, 3 miles west of the MO border

Hail, Ottawa

When: April 22, 4:50 PM CST to 4:55 PM CST
Where: Ottawa County, 10 mi SSE of Wyandotte
Measured: 1.75 in hail
Reported by: EMERGENCY MANAGER
Coordinates: 36.670, -94.670

Location: on the Delaware/Ottawa County line, 3 miles west of the MO border

Thunderstorm Wind, Rogers

When: April 22, 4:55 PM CST
Where: Rogers County, Claremore
Measured: 52 kt (60 mph)
Property damage: $300
Reported by: AMATEUR RADIO
Coordinates: 36.320, -95.600

A door was blown off of a house. Two downtown buildings in Claremore had their frontages damaged. One of these was the Chamber of Commerce which had two concrete veneer blocks from the roofline blown down.

Hail, Mayes

When: April 22, 5:00 PM CST
Where: Mayes County, 5 mi NW of Adair
Measured: 0.75 in hail
Reported by: GENERAL PUBLIC
Coordinates: 36.480, -95.330

Hail, Craig

When: April 22, 5:10 PM CST
Where: Craig County, 11 mi SE of Vinita
Measured: 0.75 in hail
Reported by: FIRE DEPT/RESCUE SQUAD
Coordinates: 36.530, -95.020

Location: Ketchum

Hail, Delaware

When: April 22, 5:15 PM CST to 5:20 PM CST
Where: Delaware County, Bernice to 4 mi of Bernice
Measured: 0.88 in hail
Reported by: EMERGENCY MANAGER
Coordinates: 36.620, -94.980

There was a report of dime-sized hail 4 miles west of Bernice at 610 PM CDT, followed by a report of nickel-sized hail in downtown Bernice at 620 PM CDT.

Hail, Rogers

When: April 22, 5:32 PM CST
Where: Rogers County, 5 mi E of Inola
Measured: 0.88 in hail
Reported by: BROADCAST MEDIA
Coordinates: 36.150, -95.420

Location: Rogers/Mayes county line on US Hwy 412

Hail, Mayes

When: April 22, 5:32 PM CST
Where: Mayes County, 5 mi W of Chouteau
Measured: 0.88 in hail
Reported by: BROADCAST MEDIA
Coordinates: 36.180, -95.430

Location: Rogers/Mayes county line on US Hwy 412

Funnel Cloud, Rogers

When: April 22, 5:38 PM CST to 5:44 PM CST
Where: Rogers County, 3 mi S of Inola
Reported by: BROADCAST MEDIA
Coordinates: 36.372, -95.604 (the zone’s center; the record gives no point)

Hail, Rogers

When: April 22, 5:45 PM CST
Where: Rogers County, 5 mi SE of Inola
Measured: 1.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 36.100, -95.430

Location: Rogers/Wagoner County line

Hail, Wagoner

When: April 22, 5:45 PM CST
Where: Wagoner County, 3 mi NW of Neodesha
Measured: 1.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 36.080, -95.470

Location: Rogers/Wagoner County line

Tornado, Rogers

When: April 22, 5:47 PM CST to 5:50 PM CST
Where: Rogers County, Inola to 4 mi SE of Inola
Rating: F1
Path length: 1 mi
Path width: 200 yd
Property damage: $1,000
Reported by: TRAINED SPOTTER
Coordinates: 36.120, -95.450

An F1 tornado touched down in a rural area 4 miles southeast of Inola. This tornado moved east into Mayes County. The tornado reached its widest point of 200 yards in Rogers County. This tornado was responsible for tree damage. For more information on this tornado, see the Mayes County Tornado entry.

Tornado, Mayes

When: April 22, 5:50 PM CST to 5:53 PM CST
Where: Mayes County, Mazie to 5 mi SW of Mazie
Rating: F1
Path length: 2 mi
Path width: 200 yd
Property damage: $2,000
Reported by: TRAINED SPOTTER
Coordinates: 36.080, -95.430

This F1 tornado originally formed in extreme southeast Rogers County and then moved east into extreme southwest Mayes County before lifting 2.5 miles southwest of Mazie. This tornado produced tree damage in a mostly rural area. While the tornado reached its widest point of 200 yards in Rogers County, the tornado was about 75 yards at its widest in Mayes County.

Hail, Mayes

When: April 22, 5:56 PM CST
Where: Mayes County, Mazie
Measured: 1.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 36.100, -95.370

Tornado, Wagoner

When: April 22, 6:05 PM CST to 6:06 PM CST
Where: Wagoner County, 5 mi ENE of Neodesha
Rating: F0
Path length: 0.3 mi
Path width: 50 yd
Reported by: TRAINED SPOTTER
Coordinates: 36.080, -95.350

Spotters reported a brief tornado touchdown 3.2 miles NNW of Rocky Point in extreme northern Rogers County.

Hail, Okmulgee

When: April 22, 6:19 PM CST
Where: Okmulgee County, Bald Hill
Measured: 1.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 35.730, -95.830

Thunderstorm Wind, Muskogee

When: April 22, 6:30 PM CST
Where: Muskogee County, Taft
Property damage: $200
Reported by: LAW ENFORCEMENT
Coordinates: 35.770, -95.530

Numerous tree limbs were blown down in Taft, causing a power outage.

Hail, Cherokee

When: April 22, 6:35 PM CST to 6:43 PM CST
Where: Cherokee County, Lost City to Hulbert
Measured: 1.5 in hail
Reported by: TRAINED SPOTTER
Coordinates: 35.980, -95.130

At 735 PM CDT, there was a report of 1.5 inch hail near Lost City. At 742 PM CDT, there was a report of 1.25-inch hail just north of Hulbert.

Thunderstorm Wind, Cherokee

When: April 22, 6:35 PM CST
Where: Cherokee County, Lost City
Measured: 61 kt (70 mph)
Reported by: TRAINED SPOTTER
Coordinates: 35.980, -95.130

Tornado, Cherokee

When: April 22, 6:40 PM CST to 6:41 PM CST
Where: Cherokee County, 6 mi N of Hulbert
Rating: F0
Path length: 0.3 mi
Path width: 50 yd
Reported by: TRAINED SPOTTER
Coordinates: 36.020, -95.150

Spotters reported a brief tornado touchdown 5 1/2 miles north of Hulbert.

Flash Flood, Muskogee

When: April 22, 6:45 PM CST to 7:45 PM CST
Where: Muskogee County, Muskogee
Reported by: EMERGENCY MANAGER
Coordinates: 35.616, -95.379 (the zone’s center; the record gives no point)

There was street flooding in Muskogee.

Tornado, Muskogee

When: April 22, 6:50 PM CST to 6:53 PM CST
Where: Muskogee County, Muskogee to 2 mi E of Muskogee
Rating: F0
Path length: 1 mi
Path width: 50 yd
Property damage: $1,000
Reported by: BROADCAST MEDIA
Coordinates: 35.750, -95.330

A weak tornado touched down for several minutes just east of the Fort Howard paper plant, or one mile east of the Muskogee Turnpike. The tornado caused some tree damage.

Hail, Cherokee

When: April 22, 7:00 PM CST
Where: Cherokee County, Tahlequah
Measured: 0.88 in hail
Reported by: TRAINED SPOTTER
Coordinates: 35.920, -94.970

Hail, Muskogee

When: April 22, 7:00 PM CST
Where: Muskogee County, Jamesville
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 35.750, -95.650

Hail, McIntosh

When: April 22, 7:20 PM CST
Where: McIntosh County, 3 mi S of Stidham
Measured: 1 in hail
Reported by: EMERGENCY MANAGER
Coordinates: 35.320, -95.700

Lightning, Muskogee

When: April 22, 7:30 PM CST
Where: Muskogee County, Muskogee
Property damage: $10,000
Reported by: NEWSPAPER
Coordinates: 35.616, -95.379 (the zone’s center; the record gives no point)

Lightning struck a radio tower at the Troop C Headquarters of the Oklahoma Highway Patrol, destroying phone, computer and radio systems.

Hail, Okmulgee

When: April 22, 7:30 PM CST
Where: Okmulgee County, Schulter
Measured: 0.75 in hail
Reported by: GENERAL PUBLIC
Coordinates: 35.520, -95.950

Hail, Okfuskee

When: April 22, 7:30 PM CST
Where: Okfuskee County, 4 mi E of Weleetka
Measured: 0.75 in hail
Reported by: EMERGENCY MANAGER
Coordinates: 35.330, -96.070

Flash Flood, Okfuskee

When: April 22, 7:30 PM CST to 8:30 PM CST
Where: Okfuskee County, Bearden
Reported by: EMERGENCY MANAGER
Coordinates: 35.466, -96.323 (the zone’s center; the record gives no point)

There was street flooding in Bearden.

Flash Flood, Okmulgee

When: April 22, 7:30 PM CST to 8:30 PM CST
Where: Okmulgee County, Henryetta
Reported by: EMERGENCY MANAGER
Coordinates: 35.647, -95.964 (the zone’s center; the record gives no point)

There was street flooding in Henryetta.

Thunderstorm Wind, Okmulgee

When: April 22, 7:32 PM CST
Where: Okmulgee County, Dewar
Property damage: $400
Reported by: LAW ENFORCEMENT
Coordinates: 35.470, -95.930

Several trees were blown down in Dewar.

Hail, McIntosh

When: April 22, 7:45 PM CST
Where: McIntosh County, 3 mi E of Eufaula
Measured: 1.25 in hail
Reported by: EMERGENCY MANAGER
Coordinates: 35.280, -95.530

Hail, Adair

When: April 22, 7:50 PM CST
Where: Adair County, Baron
Measured: 1 in hail
Reported by: GENERAL PUBLIC
Coordinates: 35.920, -94.620

Flash Flood, Cherokee

When: April 22, 8:00 PM CST to 9:00 PM CST
Where: Cherokee County, 3 mi W of Moodys
Reported by: TRAINED SPOTTER
Coordinates: 35.907, -95.000 (the zone’s center; the record gives no point)

A county road flooded 3 miles west of Moodys.

Thunderstorm Wind, Cherokee

When: April 22, 8:10 PM CST
Where: Cherokee County, 2 mi E of Pettit
Property damage: $200
Reported by: UNKNOWN
Coordinates: 35.770, -94.930

Trees were blown down.

Hail, Okfuskee

When: April 22, 8:40 PM CST
Where: Okfuskee County, Weleetka
Measured: 0.75 in hail
Reported by: LAW ENFORCEMENT
Coordinates: 35.330, -96.130

Hail, Adair

When: April 22, 8:57 PM CST
Where: Adair County, 8 mi SE of Stilwell
Measured: 0.75 in hail
Reported by: FIRE DEPT/RESCUE SQUAD
Coordinates: 35.730, -94.530

Hail, McIntosh

When: April 22, 9:00 PM CST
Where: McIntosh County, 3 mi S of Stidham
Measured: 1.5 in hail
Reported by: EMERGENCY MANAGER
Coordinates: 35.320, -95.700

Hail, McIntosh

When: April 22, 9:29 PM CST
Where: McIntosh County, 2 mi W of Eufaula
Measured: 1.5 in hail
Reported by: AMATEUR RADIO
Coordinates: 35.280, -95.620

What these are

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.
Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Funnel Cloud: A rotating column of cloud extending from a thunderstorm that did not reach the ground.
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.
Lightning: A lightning strike that killed, injured or caused damage.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Oklahoma in 1999 Every state in 1999 This day in weather history The tornado archive for Oklahoma, 1999 Warnings in Oklahoma, April 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: 5690738, 5690739, 5690860, 5690740, 5690741, 5690742, 5690743, 5690859, 5690749, 5690745, 5690746, 5690744, 5690747, 5690748, 5690750, 5690844, 5690846, 5690845, 5690847, 5690848, 5690849, 5690751, 5690850, 5690851, 5690852, 5690853, 5690854, 5691303, 5691304, 5690856, 5691305, 5690855, 5691313, 5690861, 5690857, 5691306, 5691307, 5690953, 5691308, 5691310, and more.