Tornadoes · United States · Texas · 1997

F0 tornado, Bluegrove to Deer Creek, Texas, May 8, 1997

From Bluegrove to Deer Creek, this F0 tornado ran 0.1 miles across Clay County on May 8, 1997, touching down at 8:55 PM CDT and reaching 23 yards wide. It killed nobody, and did $1,000 of property damage.

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 mphthis tornado

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

  2. F173 to 112 mph

    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
F0
Date
May 8, 1997
Touchdown
8:55 PM CDT (01:55 UTC)
Path length
0.1 miles (0.2 km)
Path width
23 yards (21 m)
Deaths
0
Injuries
0
Property damage
$1,000
County
Clay County
Touchdown point
33.570, -98.280
Lift-off point
33.570, -98.280
Record number
1029

What the Weather Service recorded

Summary of events of May 8, 1997:Severe thunderstorms moved repeatedly over western parts of north Texas during the late afternoon and through the evening of the 8th. During the daylight hours, the storms produced numerous reports of large hail and strong and damaging winds. Two tornadoes were also reported. By the end of the evening, a widespread flash-flood event had evolved, affecting most or all of 5 counties in the area. The first tornado was reported west of Bluegrove (on the south side of Lake Arrowhead) in Clay County, and the second tornado, probably a gustnado, occurred south of Deer Creek (also in Clay County). Minor damage was reported with each tornado and both were rated F0. The largest hail also fell near Lake Arrowhead, where baseball-sized hail fell for about 10 minutes. The strongest measured wind speeds reached 76 mph at the Wichita Falls Municipal Airport in Wichita County. Widespread and severe wind damage occurred in Harrold in Wilbarger County and in Iowa Park in Wichita County. Other more minor damage was reported east of Red Springs in Baylor County, in Oklaunion in Wilbarger County, in Archer City in Archer County, and south of Deer Creek in Clay County.Most of Clay and Archer Counties were affected by flash flooding. Portions of Wichita Falls in Wichita County also suffered from major flash flooding, including flooding of homes. More isolated incidents of flash flooding occurred near Benjamin in Knox County and near Seymour in Baylor County. See preceding individual Storm Data entries for further details and additional reports.

A citizen reported a brief tornado on the FM 172 bridge south of Lake Arrowhead. One picnic shelter in a park was destroyed.

A small tornado, probably a gustnado, blew part of the roof off a barn.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The warnings

14 minutes of warning. NWS OUN issued a tornado warning for this county at 01:41 UTC, 14 minutes before the tornado touched down, in force until 02:15 UTC.

Issued (UTC)ExpiredProductOffice
00:08 UTC01:00 UTCSevere Thunderstorm WarningOUN
00:55 UTC01:45 UTCSevere Thunderstorm WarningOUN
01:00 UTC01:45 UTCTornado WarningOUN
01:34 UTC04:30 UTCFlash Flood WarningOUN
01:41 UTC02:15 UTCTornado WarningOUN
04:09 UTC07:00 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 General Thunderstorms Risk. The outlook in force was issued at 05:59 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.

Fort Sill, OK (KFSI), 12:00Z

10.1 hours after it, 121 km from the path. May 9, 1997.

Skew-T log-pSkew-T log-p diagram, Fort Sill, OK at 12:00Z on 1997-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 0 joules per kilogram, CIN -3137, lifted condensation level 1416 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 km2 km3 km6 km9 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, Fort Sill, OK at 12:00Z on 1997-05-09The 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 -114 square meters per square second, 0 to 6 km bulk shear 11 knots.1939Sfc1 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
0 J/kg
Mixed-layer CIN
-3137 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
1416 m above ground
0-6 km bulk shear
11 kt
0-1 km bulk shear
28 kt
0-1 km storm-relative helicity
-114 m²/s²
0-3 km storm-relative helicity
-2 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.2 K/km

Open this sounding in Storm Lab

The surface observations

Wichita Falls/Shep (SPS), 50 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
23:56 UTC746980° 19 kt1012.9-TSRA HZ
00:24 UTC71.669.830° 27 kt331012.9TSRA BR
00:38 UTC66.264.4360° 38 kt501014.9+TSRA FG
00:56 UTC676680° 44 kt661015.2+TSRA FG
01:10 UTC71.669.8130° 13 kt1015.9-TSRA BR
01:56 UTC706810° 6 kt1017.3-TSRA BR
02:37 UTC69.866.230° 7 kt1016.6-TSRA BR
02:56 UTC696790° 14 kt1017.3-TSRA BR

From the Iowa Environmental Mesonet's archive of airport observations.

This ground now

The live radar over the trackEvery 1997 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of May 8, 1997

6 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 86:02 PM MDTF0Roosevelt, NM0.150
May 86:25 PM MDTF0Roosevelt, NM0.340
May 87:00 PM MDTF0Lea, NM2.560
May 88:15 PM CDTF0Clay, TX0.123$1,000
May 88:26 PM CDTF1Andrews, TX0.8100
May 89:35 PM CDTF0Wise, TX0.123

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.