Oklahoma, 1998

Hail and Damaging Wind in Oklahoma, May 9, 1998

May 9, 1998 · NWS OUN · 4 events in 3 counties and zones

Isolated severe thunderstorms developed during the early morning of May 9th, resulting in a downed 6 inch diameter tree in Norman. Nickel size hail was reported 4 miles south of McLoud, while dime size hail fell 2 miles west of Moore and at Tinker Air Force Base.

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
$100
Crop damage
None recorded
Events
4

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 OUN wrote it up.

Isolated severe thunderstorms developed during the early morning of May 9th, resulting in a downed 6 inch diameter tree in Norman. Nickel size hail was reported 4 miles south of McLoud, while dime size hail fell 2 miles west of Moore and at Tinker Air Force Base.

The radar

The Norman radar (KTLX), 23 km away, was scanning. The volume nearest the first event began at 12:16 UTC.

Open the radar archive at this moment

Event by event

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

Hail, Cleveland

When
May 9, 6:15 AM CST
Where
Cleveland County, 2 mi W of Moore
Measured
0.75 in hail
Coordinates
35.330, -97.530

Thunderstorm Wind, Cleveland

When
May 9, 6:20 AM CST
Where
Cleveland County, Norman
Property damage
$100
Coordinates
35.220, -97.450

Hail, Oklahoma

When
May 9, 6:30 AM CST
Where
Oklahoma County, Tinker Afb
Measured
0.75 in hail
Coordinates
35.420, -97.380

Hail, Pottawatomie

When
May 9, 7:05 AM CST
Where
Pottawatomie County, 4 mi S of Mc Loud
Measured
0.88 in hail
Coordinates
35.380, -97.100

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: 5669298, 5669301, 5669299, 5669300.