Oklahoma, 1999

Hail and Damaging Winds in Oklahoma, August 23, 1999

August 23, 1999 · NWS TSA · 14 events in 6 counties and zones

Summary of events for August 23 1999:A severe thunderstorm initially formed along a warm front in southern Rogers County on the afternoon of August 23. This storm produced an outflow boundary along which additional severe thunderstorms formed further to the southwest.

Where it happened

Every event with a place to put it. 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
$54,000
Crop damage
None recorded
Events
14

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 August 23 1999:A severe thunderstorm initially formed along a warm front in southern Rogers County on the afternoon of August 23. This storm produced an outflow boundary along which additional severe thunderstorms formed further to the southwest. The strongest storm of the day formed on top of Coweta in Wagoner County, causing a wet microburst that produced winds near 80 miles an hour and significant damage. All of the storms on this day were pulse-like in nature, producing strong winds and marginally severe hail.

The radar

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

Open the radar archive at this moment

Event by event

9 thunderstorm wind, 5 hail. Local standard time, as filed.

Thunderstorm Wind, Rogers

When
August 23, 3:50 PM CST
Where
Rogers County, 3 mi NW of Inola
Measured
61 kt (70 mph)
Reported by
STORM CHASER
Coordinates
36.180, -95.530

Thunderstorm Wind, Mayes

When
August 23, 4:12 PM CST
Where
Mayes County, 3 mi SW of Chouteau
Property damage
$100
Reported by
LAW ENFORCEMENT
Coordinates
36.150, -95.380

Large tree limbs were blown down and partially blocked a road southwest of Chouteau.

Thunderstorm Wind, Rogers

When
August 23, 4:13 PM CST
Where
Rogers County, Inola
Property damage
$2,000
Reported by
LAW ENFORCEMENT
Coordinates
36.150, -95.500

Power lines and tree limbs were blown down.

Thunderstorm Wind, Wagoner

When
August 23, 4:30 PM CST
Where
Wagoner County, 12 mi N of Coweta
Property damage
$100
Reported by
DEPT OF HIGHWAYS
Coordinates
36.120, -95.650

A large tree was blown down.

Thunderstorm Wind, Wagoner

When
August 23, 5:00 PM CST
Where
Wagoner County, Coweta
Measured
70 kt (81 mph)
Property damage
$50,000
Reported by
LAW ENFORCEMENT
Coordinates
35.950, -95.650

Winds gusting to near 80 miles an hour caused significant damage in Coweta. The Coweta Intermediate Grade Center had part of its roof blown off, rendering four of the classrooms unusable. Thirteen houses and businesses near downtown Coweta sustained damage in the form of broken windows and blown-off roofs. One of the hardest-hit areas was between 141st and 151st Streets just west of Broadway. Numerous trees were blown over, at least two of which were blown onto and damaged vehicles. Trees were also blown into roads, blocking traffic for some time. The winds downed 24 electrical and telephone lines, igniting several fires.

Hail, Wagoner

When
August 23, 5:00 PM CST
Where
Wagoner County, Coweta
Measured
0.88 in hail
Reported by
STORM CHASER
Coordinates
35.950, -95.650

Hail, Wagoner

When
August 23, 5:10 PM CST
Where
Wagoner County, Stonebluff
Measured
1 in hail
Reported by
NEWSPAPER
Coordinates
35.880, -95.730

Thunderstorm Wind, Muskogee

When
August 23, 5:20 PM CST
Where
Muskogee County, Haskell
Property damage
$2,000
Reported by
NEWSPAPER
Coordinates
35.820, -95.670

Trees and tree limbs were blown down. An outbuilding lost its roof. A storage building near OK Hwy 104 and Creek Street was blown over. Two large trees were blown onto Duncan Road, blocking traffic for two hours.

Thunderstorm Wind, Okmulgee

When
August 23, 5:48 PM CST to 5:51 PM CST
Where
Okmulgee County, 10 mi E of Natura
Measured
61 kt (70 mph)
Reported by
STORM CHASER
Coordinates
35.730, -95.770

Location: on OK Hwy 16 along the Okmulgee/Muskogee County line

Hail, Okmulgee

When
August 23, 5:48 PM CST to 5:51 PM CST
Where
Okmulgee County, 10 mi E of Natura
Measured
0.75 in hail
Reported by
STORM CHASER
Coordinates
35.730, -95.770

Location: on OK Hwy 16 along the Okmulgee/Muskogee County line

Thunderstorm Wind, Muskogee

When
August 23, 5:48 PM CST to 5:51 PM CST
Where
Muskogee County, 7 mi SW of Haskell
Measured
61 kt (70 mph)
Reported by
STORM CHASER
Coordinates
35.750, -95.750

Location: on OK Hwy 16 along the Okmulgee/Muskogee County line

Hail, Muskogee

When
August 23, 5:48 PM CST to 5:51 PM CST
Where
Muskogee County, 7 mi SW of Haskell
Measured
0.75 in hail
Reported by
STORM CHASER
Coordinates
35.750, -95.750

Location: on OK Hwy 16 along the Okmulgee/Muskogee County line

Hail, Okfuskee

When
August 23, 6:45 PM CST
Where
Okfuskee County, 1 mi NW of Pharoah
Measured
0.88 in hail
Reported by
STORM CHASER
Coordinates
35.430, -96.130

Thunderstorm Wind, Okfuskee

When
August 23, 6:45 PM CST
Where
Okfuskee County, 1 mi NW of Pharoah
Measured
52 kt (60 mph)
Reported by
STORM CHASER
Coordinates
35.430, -96.130

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.

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 historyWarnings in Oklahoma, August 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: 5712631, 5712632, 5712633, 5712642, 5712634, 5712635, 5712644, 5712643, 5712636, 5712637, 5712638, 5712639, 5712640, 5712641.