Oklahoma, 1998

Hail and Damaging Wind in Oklahoma, May 15, 1998

May 15, 1998 · NWS TSA · 5 events in 3 counties and zones

Summary of events for May 15 1998:A line of strong to severe thunderstorms that originally developed over the Texas panhandle moved eastward into Osage and Pawnee Counties around 600 AM CDT on the morning of May 15. This line quickly swept across northeast Oklahoma to the north of I-44 as an upper level system moving northeastward from New Mexico interacted with a pacific cold front.

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

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
5

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 15 1998:A line of strong to severe thunderstorms that originally developed over the Texas panhandle moved eastward into Osage and Pawnee Counties around 600 AM CDT on the morning of May 15. This line quickly swept across northeast Oklahoma to the north of I-44 as an upper level system moving northeastward from New Mexico interacted with a pacific cold front. This line of storms weakened as it moved east of Washington County. These storms produced marginally severe wind and hail.

The radar

The Tulsa radar (KINX), 110 km away, was scanning. The volume nearest the first event began at 11:31 UTC.

Open the radar archive at this moment

Event by event

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

Hail, Pawnee

When
May 15, 5:30 AM CST
Where
Pawnee County, Ralston
Measured
0.75 in hail
Coordinates
36.500, -96.720

Hail, Osage

When
May 15, 5:35 AM CST
Where
Osage County, Fairfax
Measured
0.75 in hail
Coordinates
36.570, -96.700

Thunderstorm Wind, Osage

When
May 15, 5:35 AM CST
Where
Osage County, Fairfax
Measured
52 kt (60 mph)
Coordinates
36.570, -96.700

Hail, Osage

When
May 15, 6:45 AM CST
Where
Osage County, 3 mi NE of Bowring
Measured
0.75 in hail
Coordinates
36.920, -96.080

Hail, Washington

When
May 15, 6:55 AM CST
Where
Washington County, 2 mi NW of Copan
Measured
0.75 in hail
Coordinates
36.920, -95.970

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.

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

The same day elsewhere

More

Every storm in Oklahoma in 1998Every state in 1998This day in weather historyWarnings in Oklahoma, May 1998

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: 5645197, 5645198, 5645199, 5645200, 5645201.