Tornadoes · United States · Texas · 2003

F1 tornado, Friendswood, Texas, November 17, 2003

This F1 tornado ran 0.2 miles across Galveston County on November 17, 2003, touching down at 9:08 PM CST and reaching 25 yards wide. It killed nobody, and did $200,000 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 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
November 17, 2003
Touchdown
9:08 PM CST (03:08 UTC)
Path length
0.2 miles (0.3 km)
Path width
25 yards (23 m)
Deaths
0
Injuries
0
Property damage
$200,000
County
Galveston County
Touchdown point
29.530, -95.420
Lift-off point
29.530, -95.420
Record number
85

What the Weather Service recorded

A total of 24 tornadoes touched down during this 15 hour period of severe weather in southeastern Texas on November 17, 2003. In addition to these tornadoes, a major flood developed over Harris and surrounding counties during the middle of this tornadic outbreak. Over 300 homes, along with hundreds of vehicles, were flooded.These tornadic storms developed over parts of Wharton and Matagorda counties shortly after sunrise with the first confirmed tornado occurring just east of El Campo around 9:00 am. Strong 500mb upper level troughing over the western U.S. moved from west to east across the Southern Plains. The polar jet stream associated with this 500 millibar trough surged into west Texas and then curved sharply northeastward into the Central Plains. The sub-tropical jet stream was oriented west to east across deep southern Texas. This jet stream pattern was the impetus to strong lower level convergence due to the enhanced upper level divergence. Low level moisture had substantially increased and was about 200 percent of normal by 6 AM. Vertical wind profiles also showed a great deal of low level wind shear with the greatest shear occurring in the lowest 2000 feet. In addition, these veering wind speeds rapidly increased with height. A focus for the thunderstorm development was provided by a weak low level boundary which was aligned southwest to northeast, or generally along the U.S. Highway 59 corridor. This feature was nearly-stationary and thunderstorms repeatedly developed and moved along this boundary. The axis of heaviest rain was coincident with this boundary.

Tornado struck a Friendswood church on FM 2351. Church's sanctuary received damage, church's bell tower completely torn off.

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. One was issued for the county at another hour that day.

Issued (UTC)ExpiredProductOffice
20:12 UTC21:00 UTCTornado WarningHGX
20:58 UTC21:45 UTCTornado WarningHGX
02:28 UTC03:00 UTCTornado WarningHGX
03:38 UTC06:45 UTCFlash Flood 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 Slight Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 00:58 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.

What forecasters said that day

The local office's own words before the tornado touched down, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Houston/Galveston, TX wrote its last area forecast discussion before the tornado touched down at Nov 17, 8:25 PM CST, 43 minutes earlier.

Area forecast discussion, Nov 17, 8:25 PM CST, 43 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
825 PM CST MON NOV 17 2003

SEVERE THUNDERSTORM WATCH FOR THE AREA AND TORNADO WATCH FOR
BRAZORIA...GALVESTON...CHAMBERS...AND LIBERTY COUNTY TIL MIDNIGHT.
FLASH FLOOD WATCH ALL SETX THROUGH TONIGHT.

FLOODING A PROBLEM IN NORTH CENTRAL HARRIS COUNTY. FAST MOVING
TROPICAL STORMS RACING NORTH WITH MORE TROPICAL SPINNING
CHARACTERISTICS AND TROPICAL RAINS.

TORNADO WARNINGS AND FLASH FLOOD WARNINGS MAY RESUME VERY SHORTLY.

45/40/38/35/31/36/D

.HGX WATCHES/WARNINGS/ADVISORIES...
 TORNADO WATCH (#952) FOR BRAZORIA...GALVESTON...CHAMBERS...AND
  LIBERTY COUNTY TIL MIDNIGHT.
 SEVERE THUNDERSTORM WATCH REMAINDER OF SETX
 FLOOD WATCH FOR ALL SE TX THROUGH TONIGHT.
 SMALL CRAFT ADVISORY BAYS AND 00-60 NM WATERS.
Hazardous weather outlook, Nov 17, 11:00 AM CST, 10 hours 8 minutes before
TXZ163-164-176>179-195>200-210>214-226-227-235>238-181300-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1100 AM CST MON NOV 17 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST TEXAS.

...FLOOD WATCH THIS AFTERNOON AND TONIGHT...
...SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND TONIGHT...

.DAY ONE...THIS AFTERNOON AND TONIGHT
A STRONG STORM SYSTEM WILL APPROACH SOUTHEAST TODAY AND MOVE ACROSS
THE AREA THIS AFTERNOON THROUGH EARLY TUESDAY MORNING. STRONG WINDS
ARE PRESENT IN THE ATMOSPHERE OVER SOUTHEAST TEXAS AND WILL INCREASE
THIS AFTERNOON. THESE STRONG WINDS ABOVE THE SURFACE AND INCREASING
INSTABILITY IN THE ATMOSPHERE WILL CREATE AN ENVIRONMENT FAVORABLE
FOR SEVERE THUNDERSTORM DEVELOPMENT. TONIGHT...A SQUALL LINE IS
LIKELY TO MOVE ACROSS SOUTHEAST TEXAS AHEAD OF A COLD FRONT.
THEREFORE...AN ISOLATED SEVERE THREAT DURING THE AFTERNOON HOURS MAY
INCREASE TONIGHT AS ORGANIZED CONVECTION MOVES ACROSS TONIGHT. IT
APPEARS THAT TORNADOES...HAIL...AND DAMAGING WINDS WILL ALL BE
THREATS.

IN ADDITION TO THE SEVERE THUNDERSTORM THREAT...VERY HEAVY RAINFALL
IS POSSIBLE THROUGH TONIGHT. FAST MOVING STORMS WILL LIKELY MOVE
REPEATEDLY OVER THE SAME LOCATIONS...CREATING THE HEAVY RAINFALL
THREAT AND RESULTANT FLOODING. AVERAGE RAINFALL AMOUNTS ACROSS
SOUTHEAST TEXAS ARE EXPECTED TO BE IN THE 3 TO 5 INCH RANGE WITH
ISOLATED AMOUNTS OF 10 TO 15 INCHES POSSIBLE. THESE HIGHER AMOUNTS
WILL LIKELY OCCUR NEAR AND EAST OF A HIGHWAY 59 AND INTERSTATE 10
CORRIDOR...OR ALONG AND EAST OF A LINE FROM EDNA TO KATY TO CONROE
TO GROVETON.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
SHOWERS AND THUNDERSTORMS ARE EXPECTED TO END WITH THE COLD FRONT
PASSAGE. THE FRONT IS EXPECTED TO REACH THE COAST TUESDAY MORNING.
DRY CONDITIONS ARE EXPECTED TUESDAY AFTERNOON THROUGH FRIDAY.
HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL BE REQUIRED THIS AFTERNOON AND TONIGHT.

In the hours before

Local storm report, Nov 17, 3:20 PM CST, 5 hours 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
320 PM CST MON NOV 17 2003

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1207 PM    HOUSTON                   TX   TORNADO
11/17/03   HARRIS                         MINOR ROOF DAMAGE AND
                                          STREET SIGNS TWISTED.
                                          REPORTED AT DAIRY ASHFORD
                                          AND AIRPORT.

0250 PM    BRAZORIA                  TX   TORNADO
11/17/03   BRAZORIA                       DAMAGE TO BUSINESSES IN THE
                                          CITY OF BRAZORIA.

REHBEIN
Local storm report, Nov 17, 3:35 PM CST, 5 hours 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
335 PM CST MON NOV 17 2003

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0320 PM    HOUSTON                   TX   TORNADO
11/17/03   HARRIS                         DAMAGE TO BUILDINGS IN
                                          DOWNTOWN HOUSTON NEAR
                                          MINUTE MAID PARK.

REHBEIN
Local storm report, Nov 17, 6:06 PM CST, 3 hours 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
606 PM CST MON NOV 17 2003

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0520 PM    WALLISVILLE               TX   TORNADO
11/17/03   CHAMBERS                       3 VEHICLES OVERTURNED ON
                                          I-10 WEST BOUND AT THE
                                          TRINITY RIVER BRIDGE.

0500 PM    BEACH CITY                TX   TORNADO
11/17/03   CHAMBERS                       NO REPORTED DAMAGE.

0435 PM    DICKINSON                 TX   TORNADO
11/17/03   GALVESTON                      DAMAGE TO CAR DEALERSHIPS
                                          IN DICKINSON ALONG I-45

XXX
Local storm report, Nov 17, 6:34 PM CST, 2 hours 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
634 PM CST MON NOV 17 2003

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0550 PM    DEER PARK                 TX   TORNADO
11/17/03   HARRIS                         SIX HOMES IN DEER PARK
                                          SOMERSET SUBDIVISION HAD
                                          ROOFS BLOWN OFF.

REHBEIN
Local storm report, Nov 17, 8:34 PM CST, 34 minutes before
PRELIMINARY LOCAL STORM REPORT ... CORRECTION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
834 PM CST MON NOV 17 2003

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0700 PM    KINGWOOD                  TX   FLASH FLOOD
11/17/03   HARRIS                         FLOODING AT INWOOD FOREST
                                          AND IMPERIAL VALLEY
                                          SUBDIVISIONS ALONG WHITE
                                          OAK AND GREENS BAYOUS.
                                          HOMES BEING EVACUATED.

0613 PM    PLUM GROVE                TX   FLASH FLOOD
11/17/03   LIBERTY                        WATER INTO 6 OR 7 HOMES.

0550 PM    DEER PARK                 TX   TORNADO
11/17/03   HARRIS                         SIX HOMES DAMAGED IN
                                          SOMERSET SUBDIVISION WITH
                                          ROOFS BLOWN OFF.

0520 PM    5 E MONT BELVIEU          TX   TORNADO
11/17/03   CHAMBERS                       NUMEROUS VEHICLES
                                          OVERTURNED ON I-10 WEST
                                          BOUND AND EAST BOUND AT THE
                                          TRINITY RIVER BRIDGE.
                                          VEHICLES INCLUDE RVS AND
                                          SEMI TRUCKS. I-10 CLOSED
                                          FOR A PERIOD.

0501 PM    5 N DAYTON                TX   FUNNEL CLOUD
11/17/03   LIBERTY                        FUNNEL CLOUD SIGHTED NORTH
                                          OF DAYTON ALONG FM HIGHWAY
                                          1008 TO FM HIGHWAY 2797.
                                          POSSIBLE TOUCHDOWN.

0500 PM    BEACH CITY                TX   TORNADO
11/17/03   CHAMBERS                       NO REPORTED DAMAGE.

0435 PM    DICKINSON                 TX   TORNADO
11/17/03   GALVESTON                      DAMAGE TO CAR DEALERSHIPS
                                          IN DICKINSON ALONG I-45

0433 PM    HOUSTON                   TX   FLASH FLOOD
11/17/03   HARRIS                         PARKING LOTS STREETS AND
                                          FEEDER ROADS FLOODED AT
                                          BELTWAY 8 AND WESTHEIMER IN
                                          WEST HOUSTON.

0425 PM    SANTA FE                  TX   TORNADO
11/17/03   GALVESTON                      TREE DOWNED.

0320 PM    HOUSTON                   TX   TORNADO
11/17/03   HARRIS                         DAMAGE TO BUILDINGS IN
                                          DOWNTOWN HOUSTON NEAR
                                          MINUTE MAID PARK. EXTENSIVE
                                          DAMAGE REPORTED FROM THIS
                                          AREA SOUTHWESTWARD TOWARD
                                          THE MEDICAL CENTER AREA.

0320 PM    HOUSTON                   TX   FLASH FLOOD
11/17/03   HARRIS                         ROADS IMPASSABLE AT
                                          MANCHESTER AND INTERSTATE
                                          610 AND LAWNDALE AND
                                          INTERSTATE 610.

0305 PM    HOUSTON                   TX   TORNADO
11/17/03   HARRIS                         EXTENSIVE DAMAGE IN THE
                                          MEDICAL CENTER AREA ALONG
                                          SOUTHMORE NEAR STATE
                                          HIGHWAY 288. CHURCH
                                          DESTROYED AND NUMEROUS
                                          TREES DOWNED.

0250 PM    BRAZORIA                  TX   TORNADO
11/17/03   BRAZORIA                       DAMAGE TO BUSINESSES IN THE
                                          CITY OF BRAZORIA.

0207 PM    THE WOODLANDS             TX   FUNNEL CLOUD
11/17/03   MONTGOMERY                     FUNNEL CLOUD SIGHTED IN
                                          SOUTHERN PART OF COUNTY
                                          MOVING TOWARDS NEW CANEY.

1215 PM    SW HOUSTON                TX   TORNADO
11/17/03   HARRIS                         MAJOR DAMAGE TO SOUTHWEST
                                          VILLAGE APARTMENTS LOCATED
                                          AT WEST BELLFORT AND
                                          KIRKWOOD.

1207 PM    HOUSTON                   TX   TORNADO
11/17/03   HARRIS                         MINOR ROOF DAMAGE AND
                                          STREET SIGNS DAMAGED AT
                                          DAIRY ASHFORD AND WEST
                                          AIRPORT ROAD.

1200 PM    MEADOWS                   TX   TORNADO
11/17/03   FORT BEND                      *** 16 INJ *** TORNADO
                                          TOUCHDOWN IN THE CITY OF
                                          MEADOWS. MAJOR DAMAGE TO
                                          HOMES WITH REPORTS OF
                                          SECOND STORIES OF HOMES
                                          BLOWN AWAY. TREES AND POWER
                                          LINES DOWN. NUMEROUS
                                          VEHICLES OVERTURNED. TWO OF
                                          THE INJURIES CONSIDERED
                                          SERIOUS.

1030 AM    3 NW BOLING-IAGO          TX   TORNADO
11/17/03   WHARTON                        TOUCHDOWN NEAR INTERSECTION
                                          OF COTTONDALE ROAD AND
                                          COUNTY ROAD 111. DESTROYED
                                          ONE SMALL BUILDING. HEAVY
                                          DAMAGE TO THREE BARNS. PATH
                                          WIDTH 1/4 MILE. DEBRIS PATH
                                          1/2 MILE LONG.

0915 AM    WHARTON                   TX   TSTM WND DMG
11/17/03   WHARTON                        POWER LINES DOWNED AT
                                          INTERSECTION OF COUNTY
                                          ROADS 426 AND 441.

0910 AM    PIERCE                    TX   TORNADO
11/17/03   WHARTON                        CARS BLOWN OFF US HIGHWAY
                                          59.

0909 AM    MARKHAM                   TX   FUNNEL CLOUD
11/17/03   MATAGORDA                      FUNNEL CLOUD SIGHTED NEAR
                                          MARKHAM. POSSIBLE
                                          TOUCHDOWN.

0903 AM    4 E EL CAMPO              TX   TORNADO
11/17/03   WHARTON                        BARN DAMAGED AT COUNTY ROAD
                                          307 AND COUNTY ROAD 320.

0848 AM    3 S EL CAMPO              TX   FUNNEL CLOUD
11/17/03   WHARTON                        FUNNEL CLOUD SIGHTED NEAR
                                          MARKHAM. POSSIBLE
                                          TOUCHDOWN.

MM/MR
Local storm report, Nov 17, 8:40 PM CST, 28 minutes before
PRELIMINARY LOCAL STORM REPORT...UPDATED
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
840 PM CST MON NOV 17 2003

...SUMMARY REPORT FOR NOVEMBER 17TH SEVERE WEATHER OUTBREAK...

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0700 PM    KINGWOOD                  TX   FLASH FLOOD
11/17/03   HARRIS                         FLOODING AT INWOOD FOREST
                                          AND IMPERIAL VALLEY
                                          SUBDIVISIONS ALONG WHITE
                                          OAK AND GREENS BAYOUS.
                                          HOMES BEING EVACUATED.

0613 PM    PLUM GROVE                TX   FLASH FLOOD
11/17/03   LIBERTY                        WATER INTO 6 OR 7 HOMES.

0550 PM    DEER PARK                 TX   TORNADO
11/17/03   HARRIS                         SIX HOMES DAMAGED IN
                                          SOMERSET SUBDIVISION WITH
                                          ROOFS BLOWN OFF.

0520 PM    5 E MONT BELVIEU          TX   TORNADO
11/17/03   CHAMBERS                       NUMEROUS VEHICLES
                                          OVERTURNED ON I-10 WEST
                                          BOUND AND EAST BOUND AT THE
                                          TRINITY RIVER BRIDGE.
                                          VEHICLES INCLUDE RVS AND
                                          SEMI TRUCKS. I-10 CLOSED
                                          FOR A PERIOD.

0501 PM    5 N DAYTON                TX   FUNNEL CLOUD
11/17/03   LIBERTY                        FUNNEL CLOUD SIGHTED NORTH
                                          OF DAYTON ALONG FM HIGHWAY
                                          1008 TO FM HIGHWAY 2797.
                                          POSSIBLE TOUCHDOWN.

0500 PM    BEACH CITY                TX   TORNADO
11/17/03   CHAMBERS                       NO REPORTED DAMAGE.

0435 PM    DICKINSON                 TX   TORNADO
11/17/03   GALVESTON                      DAMAGE TO CAR DEALERSHIPS
                                          IN DICKINSON ALONG I-45

0433 PM    HOUSTON                   TX   FLASH FLOOD
11/17/03   HARRIS                         PARKING LOTS STREETS AND
                                          FEEDER ROADS FLOODED AT
                                          BELTWAY 8 AND WESTHEIMER IN
                                          WEST HOUSTON.

0425 PM    SANTA FE                  TX   TORNADO
11/17/03   GALVESTON                      TREE DOWNED.

0320 PM    HOUSTON                   TX   TORNADO
11/17/03   HARRIS                         DAMAGE TO BUILDINGS IN
                                          DOWNTOWN HOUSTON NEAR
                                          MINUTE MAID PARK. EXTENSIVE
                                          DAMAGE REPORTED FROM THIS
                                          AREA SOUTHWESTWARD TOWARD
                                          THE MEDICAL CENTER AREA.

0320 PM    HOUSTON                   TX   FLASH FLOOD
11/17/03   HARRIS                         ROADS IMPASSABLE AT
                                          MANCHESTER AND INTERSTATE
                                          610 AND LAWNDALE AND
                                          INTERSTATE 610.

0305 PM    HOUSTON                   TX   TORNADO
11/17/03   HARRIS                         EXTENSIVE DAMAGE IN THE
                                          MEDICAL CENTER AREA ALONG
                                          SOUTHMORE NEAR STATE
                                          HIGHWAY 288. CHURCH
                                          DESTROYED AND NUMEROUS
                                          TREES DOWNED.

0250 PM    BRAZORIA                  TX   TORNADO
11/17/03   BRAZORIA                       DAMAGE TO BUSINESSES IN THE
                                          CITY OF BRAZORIA.

0207 PM    THE WOODLANDS             TX   FUNNEL CLOUD
11/17/03   MONTGOMERY                     FUNNEL CLOUD SIGHTED IN
                                          SOUTHERN PART OF COUNTY
                                          MOVING TOWARDS NEW CANEY.

1215 PM    SW HOUSTON                TX   TORNADO
11/17/03   HARRIS                         MAJOR DAMAGE TO SOUTHWEST
                                          VILLAGE APARTMENTS LOCATED
                                          AT WEST BELLFORT AND
                                          KIRKWOOD.

1207 PM    HOUSTON                   TX   TORNADO
11/17/03   HARRIS                         MINOR ROOF DAMAGE AND
                                          STREET SIGNS DAMAGED AT
                                          DAIRY ASHFORD AND WEST
                                          AIRPORT ROAD.

1200 PM    MEADOWS                   TX   TORNADO
11/17/03   FORT BEND                      *** 16 INJ *** TORNADO
                                          TOUCHDOWN IN THE CITY OF
                                          MEADOWS. MAJOR DAMAGE TO
                                          HOMES WITH REPORTS OF
                                          SECOND STORIES OF HOMES
                                          BLOWN AWAY. TREES AND POWER
                                          LINES DOWN. NUMEROUS
                                          VEHICLES OVERTURNED. TWO OF
                                          THE INJURIES CONSIDERED
                                          SERIOUS.

1030 AM    3 NW BOLING-IAGO          TX   TORNADO
11/17/03   WHARTON                        TOUCHDOWN NEAR INTERSECTION
                                          OF COTTONDALE ROAD AND
                                          COUNTY ROAD 111. DESTROYED
                                          ONE SMALL BUILDING. HEAVY
                                          DAMAGE TO THREE BARNS. PATH
                                          WIDTH 1/4 MILE. DEBRIS PATH
                                          1/2 MILE LONG.

0915 AM    WHARTON                   TX   TSTM WND DMG
11/17/03   WHARTON                        POWER LINES DOWNED AT
                                          INTERSECTION OF COUNTY
                                          ROADS 426 AND 441.

0910 AM    PIERCE                    TX   TORNADO
11/17/03   WHARTON                        CARS BLOWN OFF US HIGHWAY
                                          59.

0909 AM    MARKHAM                   TX   FUNNEL CLOUD
11/17/03   MATAGORDA                      FUNNEL CLOUD SIGHTED NEAR
                                          MARKHAM. POSSIBLE
                                          TOUCHDOWN.

0903 AM    4 E EL CAMPO              TX   TORNADO
11/17/03   WHARTON                        BARN DAMAGED AT COUNTY ROAD
                                          307 AND COUNTY ROAD 320.

0848 AM    3 S EL CAMPO              TX   FUNNEL CLOUD
11/17/03   WHARTON                        FUNNEL CLOUD SIGHTED NEAR
                                          MARKHAM. POSSIBLE
                                          TOUCHDOWN.

MORELAND/REHBEIN

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

3.1 hours before the tornado, 224 km from the path. November 18, 2003.

Skew-T log-pSkew-T log-p diagram, Lake Charles Mun, LA at 00:00Z on 2003-11-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 877 joules per kilogram, CIN -1, lifted condensation level 631 meters above ground. Wind barbs in knots down the right edge.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2003-11-18The 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 200 square meters per square second, 0 to 6 km bulk shear 58 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
877 J/kg
Mixed-layer CIN
-1 J/kg
Surface CAPE
1753 J/kg
Mixed-layer LCL
631 m above ground
0-6 km bulk shear
58 kt
0-1 km bulk shear
23 kt
0-1 km storm-relative helicity
200 m²/s²
0-3 km storm-relative helicity
222 m²/s²
Significant tornado parameter
1.2
Supercell composite
7.0
0-3 km lapse rate
6.1 K/km

Open this sounding in Storm Lab

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

8.9 hours after it, 224 km from the path. November 18, 2003.

Skew-T log-pSkew-T log-p diagram, Lake Charles Mun, LA at 12:00Z on 2003-11-18Temperature 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 -65019, lifted condensation level 749 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2003-11-18The 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 19 square meters per square second, 0 to 6 km bulk shear 72 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
0 J/kg
Mixed-layer CIN
-65019 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
749 m above ground
0-6 km bulk shear
72 kt
0-1 km bulk shear
32 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
3.4 K/km

Open this sounding in Storm Lab

The surface observations

Pearland Regional (LVJ), 17 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
01:11 UTC7775.2170° 15 kt251007.8
01:53 UTC7675190° 16 kt231007.8-RA
02:02 UTC75.275.2180° 12 kt241007.5+RA BR
02:14 UTC75.275.2180° 16 kt251007.5-RA
02:35 UTC75.275.2180° 11 kt1007.1VCTS +RA BR
02:44 UTC75.275.2200° 17 kt231007.8+TSRA BR
02:53 UTC7575180° 18 kt231007.8+TSRA BR
03:00 UTC75.273.4240° 13 kt231007.5VCTS +RA BR
03:04 UTC75.273.4210° 11 kt231007.5VCTS +RA BR
03:07 UTC75.273.4220° 10 kt231007.5RA BR
03:17 UTC75.275.2190° 16 kt201007.1+RA BR
03:25 UTC75.275.2210° 12 kt191007.5RA BR
03:27 UTC75.275.2200° 8 kt181007.5VCTS -RA BR
03:31 UTC75.275.2190° 18 kt291007.8VCTS RA BR
03:38 UTC75.275.2180° 16 kt291007.1VCTS +RA BR
03:45 UTC75.275.2200° 13 kt261007.5+TSRA BR
03:53 UTC7574210° 11 kt221007.5-TSRA BR
04:06 UTC75.275.2200° 12 kt191007.5
04:41 UTC75.273.4190° 13 kt191007.1
04:53 UTC7472180° 10 kt201006.8

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

The radar

The Houston radar (KHGX), 34 km away, was scanning. The volume nearest the touchdown began at 03:06 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 2003 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of November 17, 2003

26 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
November 178:33 AM CSTF0Wharton, TX0.525$1,000
November 178:38 AM CSTF0Wharton, TX1.01002$10,000
November 179:10 AM CSTF0Matagorda, TX0.575$30,000
November 179:10 AM CSTF0Wharton, TX0.550$2,000
November 179:20 AM CSTF0Wharton, TX0.220
November 1710:00 AM CSTF0Wharton, TX1.050$20,000
November 1712:05 PM CSTF2Fort Bend, TX1.520060$500,000
November 1712:15 PM CSTF2Fort Bend, TX1.050$800,000
November 171:00 PM CSTF0Harris, TX0.250
November 172:50 PM CSTF0Brazoria, TX1.0751$70,000
November 173:01 PM CSTF2Harris, TX0.7100$550,000
November 174:25 PM CSTF0Galveston, TX0.130$100,000
November 174:40 PM CSTF0Galveston, TX1.030$30,000
November 174:50 PM CSTF0Chambers, TX0.125
November 175:20 PM CSTF0Harris, TX0.550$30,000
November 175:20 PM CSTF0Cass, NE0.140
November 175:30 PM CSTF1Chambers, TX0.51005$100,000
November 175:42 PM CSTF0Liberty, TX0.220$10,000
November 175:45 PM CSTF1Liberty, TX0.220$30,000
November 178:55 PM CSTF0Harris, TX1.420$10,000
November 179:15 PM CSTF1Galveston, TX0.250$280,000
November 179:15 PM CSTF2Newton, TX1.020$1.0 million
November 179:30 PM CSTF0Harris, TX0.550$50,000
November 1710:30 PM CSTF1Harris, TX1.5503$230,000
November 1711:15 PM CSTF1Jasper, TX5.050$1.0 million
November 1711:35 PM CSTF1Chambers, TX1.050$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.