Oklahoma, 1999

Tornadoes and Flash Flooding in Oklahoma, May 3 to 4, 1999

May 3 to 4, 1999 · NWS TSA · 92 events in 24 counties and zones

S. Interactions with a dryline in western Oklahoma and a slow-moving cold front brought the largest tornado outbreak in Oklahoma history from the afternoon of May 3 through the afternoon of May 4.

Where it happened

Every event with a place to put it; 19 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
$13 million
Crop damage
None recorded
Events
92

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 May 3-4 1999:Following a week-long blocking weather pattern, a strong upper level trough finally moved out of the southwestern U.S. Interactions with a dryline in western Oklahoma and a slow-moving cold front brought the largest tornado outbreak in Oklahoma history from the afternoon of May 3 through the afternoon of May 4. Most notable was the F5 tornado that moved through southern parts of the Oklahoma City metro area. While the loss of life and the heaviest property damage was limited to central Oklahoma, eastern Oklahoma got into the act with a significant number of tornadoes.While there were dozens of individual storms on May 3 and 4, there are two storms in eastern Oklahoma that stand out as outstanding. The first outstanding storm moved northeast along the I-44 corridor on the evening of May 3, causing F3 damage to Stroud in Lincoln County. The storm went on to cause significant F1 damage in Sapulpa and southwestern portions of the city of Tulsa and millions of dollars in damage.The second outstanding storm got its start in southeast Oklahoma well south of McAlester. This storm moved northeast across Pushmataha, Latimer, Haskell, LeFlore and Sequoyah Counties, producing several damaging tornadoes along the way. The final tornado touched down in Sequoyah County and tracked 39 miles to near Fayetteville, AR, producing F3 damage in an unpopulated forest in Adair County.Following a very wet April that saturated area grounds, another slow-moving weather system made flash flooding another serious problem to deal with as most rainfall quickly ran off into creeks, streams and mainstem rivers. One flash flood in Vinita caused millions of dollars in damage following the flooding of dozens of homes.

The radar

The Norman radar (KTLX), 91 km away, was scanning. The volume nearest the first event began at 03:20 UTC.

Open the radar archive at this moment

Event by event

31 thunderstorm wind, 25 hail, 17 tornado, 15 flash flood, 2 lightning, 1 flood, 1 heavy rain. Local standard time, as filed.

Hail, Creek

When
May 3, 9:22 PM CST
Where
Creek County, Shamrock
Measured
1 in hail
Reported by
AMATEUR RADIO
Coordinates
35.920, -96.580

Tornado, Creek

When
May 3, 9:46 PM CST to 9:50 PM CST
Where
Creek County, Milfay to 3 mi NW of Milfay
Rating
F3
Path length
2 mi
Path width
150 yd
Property damage
$2,000
Reported by
NWS STORM SURVEY
Coordinates
35.750, -96.620

This tornado started out in central Lincoln County, travelling northeast and passing through the eastern Lincoln County town of Stroud. This tornado caused considerable damage in Stroud, most notably to the Tanger Factory Outlet Center. For more information on the Lincoln County portion of this tornado, refer to the Tornado entry for the Central and Western Oklahoma Storm Data compiled by the National Weather Service Office in Norman. This tornado continued on into Creek County, travelling on the ground for two miles before lifting just northwest of Milfay. This tornado reached F3 strength at its peak in Lincoln County but had started weakening by the time it entered Creek County. The path length listed with this Tornado entry only incorporates that part of the tornado path in Creek County. Fortunately in Creek County, the tornado travelled through an unpopulated rural area and was only responsible for tree damage.

Hail, Creek

When
May 3, 10:02 PM CST
Where
Creek County, Sapulpa
Measured
0.75 in hail
Reported by
AMATEUR RADIO
Coordinates
36.000, -96.100

Hail, Okmulgee

When
May 3, 10:30 PM CST
Where
Okmulgee County, Dewar
Measured
0.75 in hail
Reported by
GENERAL PUBLIC
Coordinates
35.470, -95.930

Thunderstorm Wind, Osage

When
May 3, 10:35 PM CST
Where
Osage County, 10 mi WNW of Hominy
Property damage
$500
Reported by
EMERGENCY MANAGER
Coordinates
36.470, -96.570

A power pole was blown down between Hominy and Fairfax.

Thunderstorm Wind, Osage

When
May 3, 10:45 PM CST
Where
Osage County, 10 mi NW of Hominy
Property damage
$500
Reported by
AMATEUR RADIO
Coordinates
36.520, -96.530

A power pole was blown down.

Tornado, Creek

When
May 3, 10:58 PM CST to 11:00 PM CST
Where
Creek County, Sapulpa to 2 mi of Sapulpa
Rating
F0
Path length
2 mi
Path width
50 yd
Property damage
$40,000
Reported by
NWS STORM SURVEY
Coordinates
35.980, -96.130

An F0 tornado moved through Sapulpa's central business district on Dewey Street, causing mostly cosmetic damage in the form of broken storefront windows and glass on the sidewalk.

Tornado, Creek

When
May 3, 11:08 PM CST to 11:18 PM CST
Where
Creek County, Sapulpa to 2 mi NE of Sapulpa
Rating
F1
Path length
5.5 mi
Path width
150 yd
Property damage
$6.5 million
Reported by
NWS STORM SURVEY
Coordinates
36.020, -96.070

The same system that earlier caused a destructive tornado in Stroud and a less destructive tornado in southwest Creek County produced an F1 tornado which first touched down in the north side of Sapulpa near OK Hwy 97 and Interstate 44. The tornado then skipped through an industrial area before moving across I-44. From there, the tornado travelled northeast parallel to and just south of the New Sapulpa Road (OK Hwy 66), taking out a string of homes and businesses before eventually reaching Tulsa County. This tornado tracked a total of 7 miles, 5.5 miles of which was in Creek County. The Hilton Mobile Home Park was especially hard-hit, where about 15 mobile homes were damaged or destroyed. Twenty-four residents of the mobile home park were treated on the scene for minor injuries, but none required a hospital visit. Needless to say, this tornado also blew down numerous power lines and trees. All in all, along its path in Creek County, this tornado heavily damaged 12 homes and caused light to moderate damage to about 150 others. Twenty mobile homes were heavily damaged, and 25 businesses were damaged. Total property damage in Creek County is estimated at $5.5 million. For more information on this tornado, see the Tulsa County Tornado entry for information on the last 1.5 miles of its track.

Hail, Mayes

When
May 3, 11:15 PM CST
Where
Mayes County, Adair
Measured
0.75 in hail
Reported by
FIRE DEPT/RESCUE SQUAD
Coordinates
36.430, -95.270

Tornado, Tulsa

When
May 3, 11:18 PM CST to 11:21 PM CST
Where
Tulsa County, Tulsa
Rating
F1
Path length
1.5 mi
Path width
150 yd
Property damage
$2.0 million
Reported by
NWS STORM SURVEY
Coordinates
36.150, -95.950

A tornado that originally touched down on the north side of Sapulpa traveled northeast, eventually reaching Tulsa County. This tornado caused considerable damage in several neighborhoods on the southwest side of the city of Tulsa. The majority of the damage was confined to an area roughly bounded on the east by 33rd West Avenue, on the west by 41st West Avenue, on the north by Union Avenue, and on the south by 65th Street South. The most publicized damage occurred at the Carbondale Assembly of God Church (2135 West 51st Street), where the second story of the building was reduced to rubble. Remington Elementary School (2524 W. 53rd Street) was damaged to the point where students had to finish the last two weeks of class elsewhere. The West Regional Library (2224 W. 51st Street) lost about one-third of its roof, and Fire Station #26 sustained minor damage. Four industrial businesses sustained damage, and 70 homes were damaged by the tornado. Damage in Tulsa County is estimated at $2 million. For more information on the Creek County portion of this tornado, see the Tornado entry for Creek County. The combined path length through Creek and Tulsa Counties is 7 miles.

Thunderstorm Wind, Okfuskee

When
May 3, 11:25 PM CST
Where
Okfuskee County, Pharoah
Measured
52 kt (60 mph)
Reported by
GENERAL PUBLIC
Coordinates
35.420, -96.120

Thunderstorm Wind, Okmulgee

When
May 3, 11:27 PM CST
Where
Okmulgee County, 3 mi W of Henryetta
Property damage
$500
Reported by
LAW ENFORCEMENT
Coordinates
35.450, -96.030

A tree and several tree limbs were blown down.

Flood, Rogers

When
May 3, 11:30 PM CST to May 4, 12:30 AM CST
Where
Rogers County, 6 mi NE of Bushyhead
Reported by
FIRE DEPT/RESCUE SQUAD
Coordinates
36.372, -95.604 (the zone’s center; the record gives no point)

There was street flooding in Chelsea. Water threatened businesses on Main Street in Chelsea.

Thunderstorm Wind, Osage

When
May 3, 11:44 PM CST
Where
Osage County, 2 mi N of Hominy
Measured
52 kt (60 mph)
Reported by
EMERGENCY MANAGER
Coordinates
36.450, -96.400

Hail, Pawnee

When
May 3, 11:55 PM CST to May 4, 12:05 AM CST
Where
Pawnee County, Maramec
Measured
1 in hail
Reported by
GENERAL PUBLIC
Coordinates
36.250, -96.670

Heavy Rain, Tulsa

When
May 4, 12:00 AM CST to 11:59 PM CST
Where
Tulsa County, Tulsa Intl Arpt
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
36.121, -95.941 (the zone’s center; the record gives no point)

The daily rainfall total for May 4 of 2.30 inches was the most rainfall ever recorded on May 4 and is therefore a new record daily rainfall for the date.

Hail, Tulsa

When
May 4, 12:02 AM CST
Where
Tulsa County, Tulsa
Measured
0.75 in hail
Reported by
AMATEUR RADIO
Coordinates
36.150, -95.950

Location: I-44 at the Arkansas River

Hail, Pushmataha

When
May 4, 12:30 AM CST
Where
Pushmataha County, Dunbar
Measured
0.75 in hail
Reported by
GENERAL PUBLIC
Coordinates
34.470, -95.550

Thunderstorm Wind, Pushmataha

When
May 4, 12:30 AM CST
Where
Pushmataha County, Dunbar
Property damage
$100
Reported by
GENERAL PUBLIC
Coordinates
34.470, -95.550

Many tree limbs were blown down.

Hail, Osage

When
May 4, 12:32 AM CST
Where
Osage County, 4 mi W of Hominy
Measured
0.75 in hail
Reported by
AMATEUR RADIO
Coordinates
36.420, -96.470

Thunderstorm Wind, Wagoner

When
May 4, 12:45 AM CST
Where
Wagoner County, Coweta
Property damage
$2,000
Reported by
LAW ENFORCEMENT
Coordinates
35.950, -95.650

Numerous trees were blown down.

Tornado, Muskogee

When
May 4, 12:59 AM CST
Where
Muskogee County, 1 mi S of Boynton
Rating
F0
Path length
0.5 mi
Path width
50 yd
Reported by
AMATEUR RADIO
Coordinates
35.630, -95.650

There was a brief tornado touchdown south of Boynton.

Tornado, Cherokee

When
May 4, 1:00 AM CST to 1:01 AM CST
Where
Cherokee County, Hulbert to 3 mi N of Hulbert
Rating
F1
Path length
3 mi
Path width
100 yd
Property damage
$35,000
Reported by
LAW ENFORCEMENT
Coordinates
35.950, -95.180

An F1 tornado cut a swath through Cherokee County to the north and west of Hulbert. One mile north of OK Hwy 51 at a point two miles west of Hulbert, a house trailer was damaged, and trees and power lines were blown down. Three miles north of Hulbert near Blackbird Hill, numerous trees were uprooted, several sheds were destroyed, a mobile home was damaged, and roofs were torn off of several barns.

Thunderstorm Wind, Osage

When
May 4, 1:05 AM CST
Where
Osage County, 11 mi SW of Skiatook
Property damage
$100
Reported by
GENERAL PUBLIC
Coordinates
36.250, -96.130

Two large tree limbs were blown down at the Zink Ranch.

Flash Flood, Okmulgee

When
May 4, 1:30 AM CST to 3:00 AM CST
Where
Okmulgee County, Henryetta
Property damage
$10,000
Reported by
NEWSPAPER
Coordinates
35.647, -95.964 (the zone’s center; the record gives no point)

Several roads in Dewar and Henryetta were closed between 230 AM and 500 AM CDT. Coal Creek overflowed its banks and closed OK Hwy 266 for a time around 1000 to 1030 AM CDT. Seven houses near the tennis courts on Lake Road had to be evacuated. A home on South Fourt in Henryetta was flooded.

Thunderstorm Wind, Okfuskee

When
May 4, 1:30 AM CST
Where
Okfuskee County, Weleetka
Property damage
$100
Reported by
GENERAL PUBLIC
Coordinates
35.330, -96.130

Several tree limbs were blown down.

Thunderstorm Wind, Okmulgee

When
May 4, 1:40 AM CST
Where
Okmulgee County, 1 mi W of Henryetta
Property damage
$2,000
Reported by
NEWSPAPER
Coordinates
35.450, -96.000

A newspaper clipping showed a picture of a large tree that fell on a home just west of Henryetta. Otherwise, numerous tree limbs were blown down.

Thunderstorm Wind, Okfuskee

When
May 4, 1:45 AM CST
Where
Okfuskee County, 2 mi N of Clearview
Property damage
$10,000
Reported by
GENERAL PUBLIC
Coordinates
35.430, -96.180

A barn was about 75 percent destroyed.

Thunderstorm Wind, Cherokee

When
May 4, 2:00 AM CST
Where
Cherokee County, Eldon
Property damage
$1,000
Reported by
GENERAL PUBLIC
Coordinates
35.930, -94.830

Several large trees had their tops twisted out.

Lightning, Cherokee

When
May 4, 2:00 AM CST
Where
Cherokee County, 1 mi E of Tahlequah
Property damage
$5,000
Reported by
NEWSPAPER
Coordinates
35.907, -95.000 (the zone’s center; the record gives no point)

Lightning blew shingles from a house roof and caused a fire in the home's attic. The time of this event is a gross estimate.

Hail, Wagoner

When
May 4, 2:07 AM CST
Where
Wagoner County, 1 mi SE of Wagoner
Measured
0.88 in hail
Reported by
AMATEUR RADIO
Coordinates
35.830, -95.370

Thunderstorm Wind, Wagoner

When
May 4, 2:07 AM CST
Where
Wagoner County, Wagoner
Property damage
$1,000
Reported by
NEWSPAPER
Coordinates
35.850, -95.380

A sheriff's deputy on patrol on US Hwy 69 near Baker's Catifish Restaurant had his car spun completely around by strong winds. The deputy reported that the car nearly turned over.

Tornado, Adair

When
May 4, 2:11 AM CST
Where
Adair County, 4 mi NE of Proctor
Rating
F1
Path length
0.5 mi
Path width
50 yd
Property damage
$1,000
Reported by
GENERAL PUBLIC
Coordinates
36.000, -94.730

A brief F1 tornado touchdown caused many trees to be uprooted and broken.

Thunderstorm Wind, Adair

When
May 4, 2:15 AM CST
Where
Adair County, 5 mi N of Proctor
Property damage
$500
Reported by
GENERAL PUBLIC
Coordinates
36.030, -94.780

Numerous large tree limbs were blown down.

Thunderstorm Wind, Adair

When
May 4, 2:45 AM CST
Where
Adair County, Westville
Property damage
$2,000
Reported by
EMERGENCY MANAGER
Coordinates
35.980, -94.570

There was a swath of tree damage stretching across Adair County from roughly Eldon in Cherokee County to Westville in Adair County.

Tornado, Osage

When
May 4, 6:30 AM CST
Where
Osage County, 4 mi N of Hominy
Rating
F0
Path length
0.5 mi
Path width
50 yd
Reported by
AMATEUR RADIO
Coordinates
36.470, -96.400

An amateur radio spotter reported a brief tornado touchdown north of Hominy.

Thunderstorm Wind, Latimer

When
May 4, 6:45 AM CST
Where
Latimer County, Bengal to 2 mi S of Bengal
Property damage
$100
Reported by
EMERGENCY MANAGER
Coordinates
34.780, -95.070

A large tree was blown over.

Hail, Le Flore

When
May 4, 7:30 AM CST
Where
Le Flore County, 1 mi S of Panama
Measured
0.75 in hail
Reported by
AMATEUR RADIO
Coordinates
35.150, -94.670

Thunderstorm Wind, Osage

When
May 4, 8:12 AM CST
Where
Osage County, 5 mi W of Hominy
Measured
52 kt (60 mph)
Reported by
AMATEUR RADIO
Coordinates
36.420, -96.480

Hail, Osage

When
May 4, 8:16 AM CST
Where
Osage County, 5 mi W of Hominy
Measured
0.75 in hail
Reported by
AMATEUR RADIO
Coordinates
36.420, -96.480

Thunderstorm Wind, Osage

When
May 4, 8:40 AM CST
Where
Osage County, Pawhuska to 1 mi NE of Pawhuska
Property damage
$125,000
Reported by
AMATEUR RADIO
Coordinates
36.670, -96.320

Roofs were blown off houses, windows were knocked out of buildings, four trailers were turned over, porches were knocked off houses, and numerous trees were blown down. Some of the worst damage occurred in Indian Camp.

Thunderstorm Wind, Washington

When
May 4, 9:00 AM CST
Where
Washington County, 1 mi S of Copan
Property damage
$135,000
Reported by
NEWSPAPER
Coordinates
36.880, -95.930

Significant damage was reported at several farms and residences on the south side of Copan. There were a total of four houses that received chimney and roof damage. Three barns were either heavily damaged or destroyed. A well house was destroyed, and a well's utility pole was broken. Several outbuildings and sheds were either heavily damaged or destroyed, and numerous trees were snapped or uprooted. One tree fell on a pasture fence, destroying it. A travel trailer and pop-up trailer at separate residences were destroyed.

Tornado, Pushmataha

When
May 4, 9:50 AM CST to 9:51 AM CST
Where
Pushmataha County, 13 mi W of Clayton
Rating
F1
Path length
0.5 mi
Path width
50 yd
Property damage
$500
Reported by
GENERAL PUBLIC
Coordinates
34.580, -95.580

An F1 tornado touched down briefly near the Pushmataha/Pittsburg County line off of OK Hwy 43 in an unpopulated area 13 miles west of Clayton. After causing some tree damage, the tornado crossed briefly in Pittsburg County before lifting.

Tornado, Pittsburg

When
May 4, 9:51 AM CST to 9:52 AM CST
Where
Pittsburg County, 18 mi S of Hartshorne
Rating
F1
Path length
0.5 mi
Path width
50 yd
Property damage
$500
Reported by
GENERAL PUBLIC
Coordinates
34.570, -95.530

An F1 tornado touched down briefly near the Pittsburg/Pushmataha County line along OK Hwy 43. The tornado crossed the county line in an unpopulated area, causing only tree damage.

Hail, Pittsburg

When
May 4, 10:00 AM CST
Where
Pittsburg County, 7 mi S of Hartshorne
Measured
0.75 in hail
Reported by
EMERGENCY MANAGER
Coordinates
34.730, -95.530

Hail, Tulsa

When
May 4, 10:15 AM CST
Where
Tulsa County, Sand Spgs
Measured
0.75 in hail
Reported by
LAW ENFORCEMENT
Coordinates
36.150, -96.120

Thunderstorm Wind, Latimer

When
May 4, 10:20 AM CST
Where
Latimer County, 4 mi N of Yanush
Property damage
$500
Reported by
GENERAL PUBLIC
Coordinates
34.750, -95.320

There was tree damage north of Yanush.

Thunderstorm Wind, Choctaw

When
May 4, 10:20 AM CST
Where
Choctaw County, 5 mi N of Messer
Property damage
$100
Reported by
EMERGENCY MANAGER
Coordinates
34.150, -95.480

Several large tree limbs were blown down.

Hail, Tulsa

When
May 4, 10:25 AM CST
Where
Tulsa County, Sperry
Measured
0.75 in hail
Reported by
EMERGENCY MANAGER
Coordinates
36.300, -96.000

Thunderstorm Wind, Creek

When
May 4, 10:30 AM CST
Where
Creek County, 5 mi NW of Depew
Measured
61 kt (70 mph)
Reported by
GENERAL PUBLIC
Coordinates
35.850, -96.570

Hail, Creek

When
May 4, 10:30 AM CST
Where
Creek County, 5 mi NW of Depew
Measured
1 in hail
Reported by
GENERAL PUBLIC
Coordinates
35.850, -96.570

Tornado, Latimer

When
May 4, 10:30 AM CST to 10:49 AM CST
Where
Latimer County, Panola to 2 mi N of Red Oak
Rating
F1
Path length
13 mi
Path width
100 yd
Property damage
$40,000
Reported by
LAW ENFORCEMENT
Coordinates
34.880, -95.220

An F1 tornado touched down south of Panola and moved northeast to the Latimer-Haskell county line. Ths tornado continued to a point in extreme southern Haskell County about 2 miles south of Lequire. Near Panola, this tornado blew down large trees and power lines, and it caused roof damage. After Panola, the tornado primarily affected sparsely-populated hilly terrain.

Thunderstorm Wind, Pushmataha

When
May 4, 10:35 AM CST
Where
Pushmataha County, 2 mi W of Cloudy
Property damage
$1,000
Reported by
EMERGENCY MANAGER
Coordinates
34.300, -95.320

Trees and power lines were blown down.

Hail, Creek

When
May 4, 10:37 AM CST
Where
Creek County, Bristow
Measured
0.75 in hail
Reported by
EMERGENCY MANAGER
Coordinates
35.830, -96.380

Thunderstorm Wind, Creek

When
May 4, 10:45 AM CST
Where
Creek County, Bristow to 2 mi S of Bristow
Property damage
$500
Reported by
EMERGENCY MANAGER
Coordinates
35.780, -96.380

Trees were blown down.

Tornado, Haskell

When
May 4, 10:49 AM CST to 10:50 AM CST
Where
Haskell County, Lequire to 3 mi S of Lequire
Rating
F1
Path length
1 mi
Path width
100 yd
Property damage
$1,000
Reported by
LAW ENFORCEMENT
Coordinates
35.070, -95.120

An F1 tornado that started in Latimer County 2 miles south of Panola eventually moved across the Hasell-Latimer County line, downing numerous trees 2 miles south of Lequire in extreme southern Haskell County before this tornado lifted.

Tornado, Haskell

When
May 4, 11:00 AM CST to 11:15 AM CST
Where
Haskell County, Mc Curtain to 2 mi S of Keota
Rating
F0
Path length
9 mi
Path width
80 yd
Property damage
$44,000
Reported by
EMERGENCY MANAGER
Coordinates
35.130, -95.000

An F0 tornado touched down 2 miles southwest of McCurtain and tracked to south of Keota. Along the way, the tornado heavily damaged several barns, knocked down numerous power lines, and uprooted numerous trees. The McCurtain area was especially hard-hit with numerous downed trees that blocked several roadways.

Hail, Creek

When
May 4, 11:05 AM CST
Where
Creek County, 9 mi W of Sapulpa
Measured
0.75 in hail
Reported by
OTHER FEDERAL AGENCY
Coordinates
36.000, -96.270

Location: Heyburn Lake

Flash Flood, Rogers

When
May 4, 11:15 AM CST to 12:15 PM CST
Where
Rogers County, Claremore
Reported by
EMERGENCY MANAGER
Coordinates
36.372, -95.604 (the zone’s center; the record gives no point)

OK Hwy 20 near Claremore was closed with two feet of water over the roadway. In Chelsea, water seeped into businesses and over OK Hwy 66. US Hwy 169 between Talala and Oologah was closed for a time when the roadway became covered by two feet of water. A medical clinic in Oolagah had nearly three feet of water inside.

Hail, Tulsa

When
May 4, 11:15 AM CST
Where
Tulsa County, Sand Spgs
Measured
0.75 in hail
Reported by
AMATEUR RADIO
Coordinates
36.150, -96.120

Tornado, Le Flore

When
May 4, 11:21 AM CST
Where
Le Flore County, Cowlington
Rating
F1
Path length
0.5 mi
Path width
75 yd
Property damage
$110,000
Reported by
EMERGENCY MANAGER
Coordinates
35.300, -94.780

An F1 tornado touchdown in Cowlington. The tornado damaged eight single-family homes, destroyed two mobile homes, and damaged two trailers. A mattress was lodged in a tree behind a mobile home in which its roof was peeled back. The tornado also uprooted several trees.

Hail, Tulsa

When
May 4, 11:25 AM CST
Where
Tulsa County, Sperry
Measured
0.75 in hail
Reported by
AMATEUR RADIO
Coordinates
36.300, -96.000

Flash Flood, Tulsa

When
May 4, 11:30 AM CST to 12:30 PM CST
Where
Tulsa County, North Portion
Property damage
$20,000
Reported by
LAW ENFORCEMENT
Coordinates
36.121, -95.941 (the zone’s center; the record gives no point)

In Collinsville, the intersection of 5th and Main Streets had to be closed when two to three feet of water came quickly rushing onto the road. Water was one to two feet deep inside two downtown Collinsville businesses. Several businesses along 146th Street North also closed.High water flooded quite a few streets in the city of Tulsa.OK Hwy 11 north and south of Skiatook was closed by high water.

Flash Flood, Nowata

When
May 4, 11:30 AM CST to 12:30 PM CST
Where
Nowata County, Nowata
Reported by
EMERGENCY MANAGER
Coordinates
36.799, -95.617 (the zone’s center; the record gives no point)

Creeks around Nowata ran over some roads.

Tornado, Sequoyah

When
May 4, 11:34 AM CST to 11:37 AM CST
Where
Sequoyah County, Hanson to Akins
Rating
F1
Path length
2 mi
Path width
80 yd
Property damage
$90,000
Reported by
GENERAL PUBLIC
Coordinates
35.430, -94.700

An F1 tornado touchdown south of Akins destroyed several barns, damaged several house roofs, and caused extensive tree damage. One house had half of its roof crushed by a tree, and outbuildings and a tractor shed were destroyed. Another home was damaged by trees and blowing debris, and a mobile home was moved off of its foundation. Another mobile home was crushed by a tree.

Tornado, Sequoyah

When
May 4, 11:54 AM CST to 12:04 PM CST
Where
Sequoyah County, Short to 4 mi N of Short
Rating
F3
Path length
6.5 mi
Path width
175 yd
Property damage
$7,000
Reported by
NWS STORM SURVEY
Coordinates
35.570, -94.550

A significant long-track tornado first touched down in Sequoyah County 4 miles west of Short, travelling northeast for 39 miles to a point about 7 miles southwest of Fayetteville, AR. This tornado eventually reached its peak as an F3 tornado in extreme southeast Adair County. In Sequoyah County, this tornado travelled across a sparsely-populated part of the county, causing mostly tree damage. Property damage listed with this entry is just for the portion of the tornado in Sequoyah County, while the F-rating reflects the peak strength of the tornado in Adair County.

Tornado, Adair

When
May 4, 12:04 PM CST to 12:16 PM CST
Where
Adair County, Stilwell to 13 mi SE of Stilwell
Rating
F3
Path length
7 mi
Path width
175 yd
Property damage
$7,000
Reported by
NWS STORM SURVEY
Coordinates
35.650, -94.550

A significant long-track tornado first touched down in Sequoyah County 4 miles west of Short, moving northeast for 39 miles to a point about 7 miles southwest of Fayetteville, AR. This tornado clipped the extreme southeast portion of Adair County as the tornado reached its peak strength as an F3 tornado. Fortunately, the tornado travelled across an unpopulated portion of Adair County. However, an aerial survey by NWS personnel over extreme southeast Adair County revealed that every tree in a hardwood forest was completely leveled.

Thunderstorm Wind, Cherokee

When
May 4, 12:15 PM CST
Where
Cherokee County, Tahlequah
Property damage
$200
Reported by
GENERAL PUBLIC
Coordinates
35.920, -94.970

Several large tree limbs were blown down in Tahlequah, and a large tree was blown down across a road 4 miles east of Tahlequah.

Hail, Muskogee

When
May 4, 12:15 PM CST
Where
Muskogee County, Muskogee
Measured
0.88 in hail
Reported by
EMERGENCY MANAGER
Coordinates
35.750, -95.370

Location: on the southwest side of Muskogee

Thunderstorm Wind, Pushmataha

When
May 4, 12:55 PM CST
Where
Pushmataha County, 2 mi W of Cloudy
Property damage
$2,000
Reported by
EMERGENCY MANAGER
Coordinates
34.300, -95.320

Trees and power lines were blown down.

Flash Flood, Craig

When
May 4, 1:00 PM CST to 8:00 PM CST
Where
Craig County, Vinita
Property damage
$4.0 million
Reported by
LAW ENFORCEMENT
Coordinates
36.762, -95.208 (the zone’s center; the record gives no point)

An estimated 5 to 8 inches of rain in a short time caused Big Cabin Creek on the west side of Vinita and Bull Creek on the east side of Vinita to overflow their banks and enter 54 homes. Water was five feet deep in some homes. 30 homes were evacuated. The hardest-hit areas were located along North Second to North Fourth Streets, near Sequoyah and Tahlequah. According to the police chief, all of the homes around North Second Street were devastated. Later in the evening, water from Bull Creek drained into Big Cabin Creek, flooding out several homes in the Westwood area. Long-time residents say that the last time Bull Creek flooded any homes was in 1961, though they said the flooding this time was much more serious. Property damage was estimated at $4 million. Swift-moving floodwater from Bull Creek swept a pickup truck off of Eastern State Road.All four lanes of US Hwy 60 were closed by high water 1/2 mile west of Vinita. There were also reports of flooding around Welch.

Flash Flood, Cherokee

When
May 4, 1:00 PM CST to 2:00 PM CST
Where
Cherokee County, Tahlequah
Reported by
LAW ENFORCEMENT
Coordinates
35.907, -95.000 (the zone’s center; the record gives no point)

Several roads in Tahlequah were closed. One house and a day care center near the intersection of Tahlequah-North Wilson each took in about 5 inches of water. Baker Road near OK Hwy 51 was closed for a time.

Flash Flood, Pittsburg

When
May 4, 1:00 PM CST to 2:00 PM CST
Where
Pittsburg County, Hartshorne
Reported by
EMERGENCY MANAGER
Coordinates
34.924, -95.748 (the zone’s center; the record gives no point)

There was street flooding in Hartshorne.

Thunderstorm Wind, Choctaw

When
May 4, 1:00 PM CST
Where
Choctaw County, Ft Towson
Property damage
$5,000
Reported by
FIRE DEPT/RESCUE SQUAD
Coordinates
34.020, -95.270

Tree limbs were blown down in Fort Towson. One large tree limb fell on a historical home.

Flash Flood, Mayes

When
May 4, 1:00 PM CST to 2:00 PM CST
Where
Mayes County, Adair
Reported by
GENERAL PUBLIC
Coordinates
36.302, -95.231 (the zone’s center; the record gives no point)

Several county roads were flooded.

Flash Flood, Ottawa

When
May 4, 1:00 PM CST to 2:00 PM CST
Where
Ottawa County, Miami
Property damage
$110,000
Reported by
EMERGENCY MANAGER
Coordinates
36.836, -94.810 (the zone’s center; the record gives no point)

Several homes had water damage in Miami when Tar Creek overflowed its banks. Residents of the Scotty Court area were evacuated after Tar Creek began rising. The baseball diamond at Northeast Oklahoma A&M was badly damaged when 3 feet of water covered the field. In Commerce, 20 homes and businesses, including city hall, were flooded. In Quapaw, floodwaters entered a nursing home. At Wyandotte, Fairland, and Afton, roads were closed in each of those communities. Up to 20 streets at one time were closed in Miami, particularly north of town.

Flash Flood, Latimer

When
May 4, 1:00 PM CST to 2:00 PM CST
Where
Latimer County, Wilburton
Reported by
EMERGENCY MANAGER
Coordinates
34.876, -95.250 (the zone’s center; the record gives no point)

There was street flooding, and one street had to be closed.

Thunderstorm Wind, Mayes

When
May 4, 1:00 PM CST
Where
Mayes County, 3 mi W of Langley
Property damage
$4,000
Reported by
NEWSPAPER
Coordinates
36.470, -95.100

Windows were blown out of a brick house, a large old tree was uprooted, and a pontoon boat was tossed from its trailer.

Lightning, Mayes

When
May 4, 1:00 PM CST
Where
Mayes County, 1 mi W of Pryor
Property damage
$50,000
Reported by
NEWSPAPER
Coordinates
36.302, -95.231 (the zone’s center; the record gives no point)

Lightning lit fire to and destroyed a new home in the Grand Prarie Estates west of Pryor. The time in this entry is a very rough estimate.

Flash Flood, Wagoner

When
May 4, 1:15 PM CST to 2:15 PM CST
Where
Wagoner County, Porter
Reported by
EMERGENCY MANAGER
Coordinates
35.961, -95.521 (the zone’s center; the record gives no point)

Several roads were closed due to high water.

Flash Flood, Sequoyah

When
May 4, 1:15 PM CST to 2:30 PM CST
Where
Sequoyah County, Central Portion
Reported by
EMERGENCY MANAGER
Coordinates
35.495, -94.755 (the zone’s center; the record gives no point)

Water covered several county roads.

Thunderstorm Wind, Latimer

When
May 4, 1:30 PM CST
Where
Latimer County, Bengal
Property damage
$100
Reported by
GENERAL PUBLIC
Coordinates
34.830, -95.070

Several large tree limbs were blown down in Bengal.

Flash Flood, Delaware

When
May 4, 2:00 PM CST to 3:00 PM CST
Where
Delaware County, Grove
Reported by
EMERGENCY MANAGER
Coordinates
36.408, -94.803 (the zone’s center; the record gives no point)

Low-water crossings were flooded near Grove.

Flash Flood, Adair

When
May 4, 2:00 PM CST to 3:00 PM CST
Where
Adair County, Baron
Reported by
EMERGENCY MANAGER
Coordinates
35.884, -94.659 (the zone’s center; the record gives no point)

Water was over a low-water crossing near Baron and Westville.

Flash Flood, Le Flore

When
May 4, 2:00 PM CST to 3:00 PM CST
Where
Le Flore County, Zoe
Reported by
EMERGENCY MANAGER
Coordinates
34.900, -94.703 (the zone’s center; the record gives no point)

A bridge in Zoe was completely washed out. Other county roads were flooded near Page.

Thunderstorm Wind, Washington

When
May 4, 2:30 PM CST
Where
Washington County, Copan to 2 mi NE of Copan
Property damage
$3,000
Reported by
EMERGENCY MANAGER
Coordinates
36.900, -95.900

Four power poles and a shed were blown down.

Hail, Osage

When
May 4, 7:11 PM CST
Where
Osage County, Hominy
Measured
1 in hail
Reported by
TRAINED SPOTTER
Coordinates
36.420, -96.400

Hail, Osage

When
May 4, 7:45 PM CST
Where
Osage County, Barnsdall
Measured
0.88 in hail
Reported by
EMERGENCY MANAGER
Coordinates
36.570, -96.170

Hail, Washington

When
May 4, 7:52 PM CST
Where
Washington County, Ochelata
Measured
0.75 in hail
Reported by
NWS EMPLOYEE(OFF DUTY)
Coordinates
36.600, -95.980

Hail, Osage

When
May 4, 8:00 PM CST
Where
Osage County, Barnsdall
Measured
0.75 in hail
Reported by
GENERAL PUBLIC
Coordinates
36.570, -96.170

Thunderstorm Wind, Nowata

When
May 4, 8:00 PM CST
Where
Nowata County, Wann
Property damage
$1,000
Reported by
GENERAL PUBLIC
Coordinates
36.920, -95.800

Several large tree limbs were blown down, one of which fell through a porch.

Hail, Nowata

When
May 4, 8:00 PM CST
Where
Nowata County, 6 mi WNW of Nowata
Measured
0.75 in hail
Reported by
GENERAL PUBLIC
Coordinates
36.730, -95.730

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.
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.
Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
Heavy Rain
Rainfall totals unusual for the place and season that did not produce a flood.
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

More

Every storm in Oklahoma in 1999Every state in 1999This day in weather historyThe tornado archive for Oklahoma, 1999Warnings in Oklahoma, 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: 5701226, 5700318, 5701227, 5701228, 5700249, 5701231, 5700322, 5700323, 5700162, 5700366, 5701230, 5701229, 5701232, 5701235, 5701234, 5700516, 5701233, 5700251, 5700252, 5701236, 5701237, 5700367, 5700368, 5700243, 5700250, 5701239, 5700094, 5701238, 5700097, 5700453, 5700095, 5700320, 5700369, 5700096, 5700098, 5700370, 5700099, 5700100, 5700101, 5700102, and more.