Oklahoma, 1999

Flood and Hail in Oklahoma, July 7, 1999

July 7, 1999 · NWS TSA · 6 events in 3 counties and zones

Isolated air mass thunderstorms briefly reached severe limits over Cherokee and Mayes Counties from Tahlequah to Chouteau, producing severe winds and marginally severe hail.

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

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The toll

Deaths
0
Injuries
0
Property damage
$3,000
Crop damage
None recorded
Events
6

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.

Isolated air mass thunderstorms briefly reached severe limits over Cherokee and Mayes Counties from Tahlequah to Chouteau, producing severe winds and marginally severe hail.

The radar

The Tulsa radar (KINX), 29 km away, was scanning. The volume nearest the first event began at 18:06 UTC.

Open the radar archive at this moment

Event by event

4 thunderstorm wind, 1 flood, 1 hail. Local standard time, as filed.

Thunderstorm Wind, Tulsa

When
July 7, 12:00 PM CST
Where
Tulsa County, 7 mi SE of Tulsa
Property damage
$100
Reported by
TRAINED SPOTTER
Coordinates
36.080, -95.870

A mature 6-8" diameter tree was blown down by winds from a wet microburst near E. 51st Street and South Sheridan Road in Tulsa.

Flood, Cherokee

When
July 7, 12:30 PM CST to 1:30 PM CST
Where
Cherokee County, Tahlequah
Reported by
NEWSPAPER
Coordinates
35.907, -95.000 (the zone’s center; the record gives no point)

There was street flooding in many portions of Tahlequah.

Thunderstorm Wind, Cherokee

When
July 7, 12:45 PM CST
Where
Cherokee County, Tahlequah
Property damage
$500
Reported by
NEWSPAPER
Coordinates
35.920, -94.970

A power line was blown down in the southwest part of Tahlequah (in the 200 block of West Allen).

Thunderstorm Wind, Cherokee

When
July 7, 1:15 PM CST
Where
Cherokee County, Peggs
Property damage
$500
Reported by
NEWSPAPER
Coordinates
36.080, -95.100

A power line was blown down near Peggs.

Hail, Mayes

When
July 7, 1:55 PM CST
Where
Mayes County, Chouteau
Measured
0.75 in hail
Reported by
EMERGENCY MANAGER
Coordinates
36.180, -95.350

Thunderstorm Wind, Mayes

When
July 7, 2:00 PM CST
Where
Mayes County, Chouteau
Property damage
$2,000
Reported by
FIRE DEPT/RESCUE SQUAD
Coordinates
36.180, -95.350

Power lines were blown down in Chouteau.

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.
Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
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, July 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: 5700280, 5700281, 5700282, 5700283, 5700279, 5700278.