Tornadoes · United States · Oklahoma · 1995

F1 tornado, Murray County, Oklahoma, May 7, 1995

This F1 tornado ran 2.0 miles across Murray County on May 7, 1995, touching down at 4:00 PM CDT and reaching 100 yards wide. It killed nobody.

The rating scale

Tracks are drawn in the color of the rating. The Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  1. F040 to 72 mph

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. F173 to 112 mphthis tornado

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. F2113 to 157 mph

    Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.

  4. F3158 to 206 mph

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. F4207 to 260 mph

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. F5261 to 318 mph

    Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.

  7. Unrated

    The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

The record

Rating
F1
Date
May 7, 1995
Touchdown
4:00 PM CDT (21:00 UTC)
Path length
2.0 miles (3.2 km)
Path width
100 yards (91 m)
Deaths
0
Injuries
0
County
Murray County
Touchdown point
34.500, -97.120
Record number
238

The warnings

11 minutes of warning. NWS OUN issued a tornado warning for this county at 20:49 UTC, 11 minutes before the tornado touched down, in force until 21:30 UTC.

Issued (UTC)ExpiredProductOffice
20:49 UTC21:30 UTCTornado WarningOUN
21:19 UTC22:00 UTCTornado WarningOUN
22:18 UTC23:15 UTCTornado WarningOUN
03:15 UTC06:15 UTCFlash Flood WarningOUN

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The forecast that day

The Storm Prediction Center had this point in a Moderate Risk. The outlook in force was issued at 06:07 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

The air that afternoon

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Norman, OK (KOUN), 12:00Z

9.0 hours before the tornado, 84 km from the path. May 7, 1995.

Skew-T log-pSkew-T log-p diagram, Norman, OK at 12:00Z on 1995-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1311 joules per kilogram, CIN -100, lifted condensation level 503 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Norman, OK at 12:00Z on 1995-05-07The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 126 square meters per square second, 0 to 6 km bulk shear 40 knots.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
1311 J/kg
Mixed-layer CIN
-100 J/kg
Surface CAPE
673 J/kg
Mixed-layer LCL
503 m above ground
0-6 km bulk shear
40 kt
0-1 km bulk shear
32 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6
0-3 km lapse rate
4.0 K/km

Open this sounding in Storm Lab

Norman, OK (KOUN), 00:00Z

3.0 hours after it, 84 km from the path. May 8, 1995.

Skew-T log-pSkew-T log-p diagram, Norman, OK at 00:00Z on 1995-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 2076 joules per kilogram, CIN -1, lifted condensation level 552 meters above ground. Wind barbs in knots down the right edge.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Norman, OK at 00:00Z on 1995-05-08The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 311 square meters per square second, 0 to 6 km bulk shear 45 knots.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
2076 J/kg
Mixed-layer CIN
-1 J/kg
Surface CAPE
2338 J/kg
Mixed-layer LCL
552 m above ground
0-6 km bulk shear
45 kt
0-1 km bulk shear
33 kt
0-1 km storm-relative helicity
311 m²/s²
0-3 km storm-relative helicity
365 m²/s²
Significant tornado parameter
3.8
Supercell composite
18.6
0-3 km lapse rate
5.3 K/km

Open this sounding in Storm Lab

The radar

The Norman radar (KTLX), 94 km away, was scanning. The volume nearest the touchdown began at 20:57 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

This ground now

The live radar over the trackEvery 1995 tornado in OklahomaEvery tornado in Oklahoma since 1950Warnings in force in Oklahoma nowThe forecast where you are

The other tornadoes of May 7, 1995

32 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 71:40 AM CDTF2Randall, TX12.0200112$50,000 to $500,000
May 78:05 AM CDTF0Hansford, TX0.223
May 71:05 PM CDTF0Archer, TX0.123
May 73:17 PM CDTF0Jack, TX0.110
May 73:25 PM CDTF0Wise, TX0.5100$5,000 to $50,000
May 73:56 PM CDTF0Greer, OK0.273
May 74:10 PM CDTF1Garvin, OK6.0200$5,000 to $50,000
May 74:10 PM CDTF3Montague, TX26.0880211$500,000 to $5 million
May 74:20 PM CDTF3Love, TX to OK34.188036$50 million to $500 million
May 74:20 PM CDTF1Johnston, OK0.250$500 to $5,000
May 74:45 PM CDTF0Seminole, OK0.273
May 74:55 PM CDTF0Hughes, OK1.030$500 to $5,000
May 75:08 PM CDTF2Hughes, OK6.050$5,000 to $50,000
May 75:25 PM CDTF1San Jacinto, TX8.050
May 75:29 PM CDTF1Murray, OK3.0200$50,000 to $500,000
May 75:38 PM CDTF0Okfuskee, OK0.130$5,000 to $50,000
May 74:39 PM MDTF0Weld, CO0.510
May 75:45 PM CDTF1Barton, MO5.0100$5,000 to $50,000
May 75:52 PM CDTF1Coleman, TX0.110$50,000 to $500,000
May 75:53 PM CDTF1Murray, OK0.120$5,000 to $50,000
May 76:00 PM CDTF0Concho, TX0.220$5,000 to $50,000
May 76:22 PM CDTF0Coleman, TX0.110$50,000 to $500,000
May 77:30 PM CDTF0Brown, TX0.110$500 to $5,000
May 77:30 PM CDTF0Eastland, TX18.010$5,000 to $50,000
May 78:00 PM CDTF1Brown, TX5.010$50,000 to $500,000
May 78:41 PM CDTF2Real, TX2.03002$5,000 to $50,000
May 79:10 PM CDTF0Kerr, TX0.110
May 79:20 PM CDTF0Erath, TX0.110$5,000 to $50,000
May 79:36 PM CDTF1Real, TX0.1105$500 to $5,000
May 79:36 PM CDTF2Kerr, TX2.04002$5,000 to $50,000
May 710:15 PM CDTF1Tarrant, TX10.03004$500,000 to $5 million
May 711:50 PM CDTF1Hickory, MO0.450$5,000 to $50,000

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

Sources

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.