Tornadoes · United States · Texas · 2004

F0 tornado, Sugarland, Texas, November 23, 2004

This F0 tornado ran 0.1 miles across Fort Bend County on November 23, 2004, touching down at 10:05 PM CST and reaching 20 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 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
November 23, 2004
Touchdown
10:05 PM CST (04:05 UTC)
Path length
0.1 miles (0.2 km)
Path width
20 yards (18 m)
Deaths
0
Injuries
0
County
Fort Bend County
Touchdown point
29.620, -95.770
Lift-off point
29.620, -95.770
Record number
1689

What the Weather Service recorded

Tree down.

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

The warnings

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down.

Issued (UTC)ExpiredProductOffice
03:46 UTC04:30 UTCSevere Thunderstorm WarningHGX

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, with a 0.15 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 01:14 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.

Lake Charles Mun, LA (KLCH), 00:00Z

4.1 hours before the tornado, 254 km from the path. November 24, 2004.

Skew-T log-pSkew-T log-p diagram, Lake Charles Mun, LA at 00:00Z on 2004-11-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1863 joules per kilogram, CIN -2, lifted condensation level 691 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, Lake Charles Mun, LA at 00:00Z on 2004-11-24The 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 177 square meters per square second, 0 to 6 km bulk shear 53 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
1863 J/kg
Mixed-layer CIN
-2 J/kg
Surface CAPE
2253 J/kg
Mixed-layer LCL
691 m above ground
0-6 km bulk shear
53 kt
0-1 km bulk shear
23 kt
0-1 km storm-relative helicity
177 m²/s²
0-3 km storm-relative helicity
209 m²/s²
Significant tornado parameter
2.0
Supercell composite
8.1
0-3 km lapse rate
6.3 K/km

Open this sounding in Storm Lab

Lake Charles Mun, LA (KLCH), 12:00Z

7.9 hours after it, 254 km from the path. November 24, 2004.

Skew-T log-pSkew-T log-p diagram, Lake Charles Mun, LA at 12:00Z on 2004-11-24Temperature 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 -104155, lifted condensation level 1633 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 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, Lake Charles Mun, LA at 12:00Z on 2004-11-24The 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 -196 square meters per square second, 0 to 6 km bulk shear 63 knots.1939587897117Sfc1 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
-104155 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
1633 m above ground
0-6 km bulk shear
63 kt
0-1 km bulk shear
23 kt
0-1 km storm-relative helicity
-196 m²/s²
0-3 km storm-relative helicity
-85 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.0 K/km

Open this sounding in Storm Lab

The surface observations

Houston/Hull Field (SGR), 11 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
02:53 UTC7672200° 12 kt1002.7
03:45 UTC75.273.4230° 9 kt1003.7TS
03:53 UTC7673240° 10 kt151003.7VCTS
04:02 UTC66.264.4300° 21 kt371006.4+TSRA BR
04:07 UTC62.660.8300° 17 kt371006.4+TSRA BR
04:13 UTC62.660.8320° 10 kt281006.1TSRA BR
04:21 UTC62.660.8310° 10 kt1007.1TSRA
04:36 UTC62.660.8310° 12 kt1006.4RA
04:53 UTC6259330° 18 kt251005.4-RA
05:53 UTC6157300° 8 kt1006.8

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

The radar

The Houston radar (KHGX), 69 km away, was scanning. The volume nearest the touchdown began at 04:04 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.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)ReportWhereCountyRemark
03:12 UTCTSTM WND DMGCat SpringAustin, TXTREE DOWN ON HOUSE.
03:20 UTCTSTM WND DMGMonavilleWaller, TXBARN DAMAGED.
03:20 UTCTSTM WND DMGWallerHarris, TXPOWER POLES SNAPPED.
03:20 UTCTORNADO5 Nw WhartonWharton, TXPOSSIBLE TORNADO DAMAGED 4 HOMES IN THE SPANISH CAMP AREA NEAR THE INTERSECTION OF FM HIGHWAY 1161 AND FM HIGHWAY 640.
03:25 UTCTSTM WND DMG6 Ese MonavilleWaller, TXPOWER POLES SNAPPED NEAR FM HIGHWAY 362 AND FM HIGHWAY 529.
03:30 UTCTSTM WND DMGWhartonWharton, TXNUMEROUS TELEPHONE POLES SNAPPED...TREES AND POWER LINES DOWN...AND BARNS DAMAGED IN THE AREA BETWEEN GLEN FLORA...EGYPT...HUNGERFORD...AND WHARTON.
03:40 UTCTSTM WND DMG1 S HempsteadWaller, TXTREE TOPPLED ONTO ROADWAY CAUSING A TRAFFIC ACCIDENT INVOLVING A SHERRIFFS OFFICER. NO INJURIES REPORTED.
04:00 UTCTSTM WND DMG10 S CypressHarris, TXTREES AND POWER LINES DOWN AT FM HIGHWAY 529 AND HIGHWAY 6 IN NORTHWEST HARRIS COUNTY.
04:05 UTCTSTM WND DMGSugar LandFort Bend, TXTREES DOWN ALONG HIGHWAY 6 NEAR US HIGHWAY 90.
04:05 UTCTORNADOPecan GroveFort Bend, TXPOSSIBLE TORNADO IN PECAN GROVE AT KEY MAP LOCATION 566J. TREES DOWN IN THE AREA.
04:25 UTCTSTM WND DMGAlvinBrazoria, TXTREE DOWN ON POWER LINES.

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the trackEvery 2004 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of November 23, 2004

47 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
November 2310:40 AM CSTF0Williamson, TX0.120
November 2310:51 AM CSTF0Williamson, TX0.120
November 2311:05 AM CSTF0Williamson, TX0.330
November 231:10 PM CSTF0Montgomery, TX0.220$40,000
November 231:34 PM CSTF0Fayette, TX0.330
November 231:49 PM CSTF0Polk, TX0.115$10,000
November 231:55 PM CSTF0San Jacinto, TX0.120
November 232:20 PM CSTF0Washington, TX0.120$10,000
November 232:52 PM CSTF0Liberty, TX0.120
November 233:25 PM CSTF0Grimes, TX0.225
November 233:30 PM CSTF0Montgomery, TX0.325$10,000
November 233:35 PM CSTF0Maverick, TX0.120
November 233:50 PM CSTF0Montgomery, TX0.120
November 234:08 PM CSTF1Hardin, TX16.0200$100,000
November 234:10 PM CSTF0Chicot, AR1.050$2,000
November 234:24 PM CSTF0Richland Parish, LA0.525
November 234:27 PM CSTF2Hardin, TX8.06001$600,000
November 234:38 PM CSTF0Zavala, TX0.120
November 234:40 PM CSTF0Maverick, TX0.330
November 234:41 PM CSTF2Jasper, TX8.0300$250,000
November 234:55 PM CSTF2Jasper, TX15.0500$500,000
November 235:12 PM CSTF0Maverick, TX0.550
November 235:12 PM CSTF1Newton, TX3.0300$100,000
November 235:40 PM CSTF1Newton, TX to LA9.0300$50,000
November 236:00 PM CSTF0Natchitoches Parish, LA1.025$30,000
November 236:08 PM CSTF0Burnet, TX0.120
November 236:08 PM CSTF1Vernon Parish, LA1.0100$200,000
November 236:08 PM CSTF0Williamson, TX0.3400
November 236:10 PM CSTF1Newton, TX1.0100$40,000
November 236:30 PM CSTF1Newton, TX10.0300$250,000
November 236:35 PM CSTF2Vernon Parish, LA10.06003$500,000
November 236:49 PM CSTF2Natchitoches Parish, LA20.03001$1.0 million
November 236:50 PM CSTF1Vernon Parish, LA14.0150$100,000
November 237:20 PM CSTF0Grant Parish, LA12.075
November 237:20 PM CSTF1Vernon Parish, LA3.050$50,000
November 237:32 PM CSTF0Bell, TX0.150$10,000
November 237:46 PM CSTF0Karnes, TX0.120
November 238:00 PM CSTF0DeWitt, TX0.120
November 238:05 PM CSTF3LaSalle Parish, LA15.0300120$5.8 million
November 238:13 PM CSTF1DeWitt, TX0.5100
November 238:30 PM CSTF0Grant Parish, LA3.075$50,000
November 238:58 PM CSTF0Lavaca, TX0.120
November 239:20 PM CSTF0Wharton, TX0.435$30,000
November 239:38 PM CSTF1Marion, AL13.9250$400,000
November 2310:00 PM CSTF2Trinity, TX2.0500$100,000
November 2311:31 PM CSTF0Warren, MS1.075$1,000
November 2311:40 PM CSTF3Jefferson, MS18.0600$300,000

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.