Alert archive / Texas / Tornado Watches in 2004
Tornado Watch 199
The Storm Prediction Center issued this tornado watch at May 13, 2004, 12:10 PM CDT for Allen Parish, Beauregard Parish, Calcasieu Parish, Louisiana; 28 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 13, 2004, 12:10 PM CDT (17:10 UTC)
- Expired
- May 13, 2004, 6:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 31 counties
Allen Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Angelina County, TX, Austin County, TX, Brazoria County, TX, Chambers County, TX, Colorado County, TX, Fayette County, TX, Fort Bend County, TX, Galveston County, TX, Grimes County, TX, Hardin County, TX, Harris County, TX, Jasper County, TX, Jefferson County, TX, Liberty County, TX, Matagorda County, TX, Montgomery County, TX, Newton County, TX, Orange County, TX, Polk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Trinity County, TX, Tyler County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX
The radar
The Houston radar (KHGX), 81 km from the middle of the area, began a volume at 17:13 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
Warnings issued inside it
24 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 12:13 PM CDT | Flash Flood Warning | HGX | Montgomery | 2 hr |
| May 13, 12:22 PM CDT | Severe Thunderstorm Warning | HGX | Liberty | 68 min |
| May 13, 12:40 PM CDT | Tornado Warning | HGX | Harris, Liberty | 65 min |
| May 13, 12:55 PM CDT | Flash Flood Warning | SHV | Angelina | 2 hr |
| May 13, 1:15 PM CDT | Flash Flood Warning | HGX | Trinity | 75 min |
| May 13, 1:32 PM CDT | Tornado Warning | LCH | Tyler | 28 min |
| May 13, 1:38 PM CDT | Flash Flood Warning | HGX | Harris, Waller, Washington | 112 min |
| May 13, 1:45 PM CDT | Severe Thunderstorm Warning | HGX | Chambers | 60 min |
| May 13, 1:46 PM CDT | Severe Thunderstorm Warning | LCH | Jasper | 59 min |
| May 13, 2:28 PM CDT | Severe Thunderstorm Warning | LCH | Newton | 62 min |
| May 13, 2:30 PM CDT | Flash Flood Warning | HGX | Brazos, Burleson, Grimes, Houston, Liberty, Madison and 5 more | 2 hr |
| May 13, 2:32 PM CDT | Tornado Warning | LCH | Jasper | 28 min |
| May 13, 2:36 PM CDT | Severe Thunderstorm Warning | LCH | Orange | 54 min |
| May 13, 3:00 PM CDT | Severe Thunderstorm Warning | LCH | Beauregard, Calcasieu, Vernon | 60 min |
| May 13, 3:02 PM CDT | Flash Flood Warning | EWX | Bastrop, Caldwell, Fayette | 4 hr |
| May 13, 3:23 PM CDT | Severe Thunderstorm Warning | LCH | Jefferson | 52 min |
| May 13, 3:38 PM CDT | Severe Thunderstorm Warning | HGX | Colorado | 67 min |
| May 13, 3:57 PM CDT | Severe Thunderstorm Warning | LCH | Beauregard, Calcasieu, Vernon | 63 min |
| May 13, 4:15 PM CDT | Flash Flood Warning | LCH | Jefferson, Orange | 4 hr |
| May 13, 4:31 PM CDT | Severe Thunderstorm Warning | LCH | Allen, Jefferson Davis | 59 min |
| May 13, 4:33 PM CDT | Flash Flood Warning | HGX | Brazos, Burleson, Grimes, Madison, Montgomery, Polk and 4 more | 3 hr |
| May 13, 4:42 PM CDT | Flash Flood Warning | LCH | Calcasieu | 3 hr |
| May 13, 4:52 PM CDT | Severe Thunderstorm Warning | HGX | Harris, Waller | 38 min |
| May 13, 5:07 PM CDT | Severe Thunderstorm Warning | HGX | Harris, Montgomery | 53 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 5.2 hours before the alert went out and 207 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1515 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 727 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.7
The text
As transmitted, in the capitals the NWS used until 2016.
969
WWUS20 KWNS 131710
SEL9
SPC WW 131710
LAZ000-TXZ000-CWZ000-132300-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 199
NWS STORM PREDICTION CENTER NORMAN OK
1210 PM CDT THU MAY 13 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHWEST LOUISIANA
SOUTHEAST TEXAS
COASTAL WATERS
EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 1210 PM UNTIL
600 PM CDT.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES EITHER SIDE
OF A LINE FROM 80 MILES WEST SOUTHWEST OF HOUSTON TEXAS TO 85
MILES EAST OF LUFKIN TEXAS.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 197. WATCH NUMBER 197 WILL NOT BE IN EFFECT AFTER
1210 PM CDT. CONTINUE...WW 198...
DISCUSSION...LARGE MCS HAS DEVELOPED A COLD POOL WHICH WILL
ACCELERATE MOST INTENSE THUNDERSTORMS TOWARD THE GULF COAST. WITH A
40-50 KT LLJ AND A VERY MOIST AND UNSTABLE AIR MASS FEEDING
STORMS...ISOLATED TORNADIC SUPERCELLS ARE LIKELY...IN ADDITION TO
WIND DAMAGE WITH LINE SEGMENTS AND BOWS THAT DEVELOP
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 28025.
...HALES
295,0970 315,0935 302,0924 282,0955SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 8:03 PM CDT | Mesoscale Discussion | SPC | Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles and 1 more | 57 min |
| May 13, 1:38 PM CDT | Mesoscale Discussion | SPC | Beauregard, Calcasieu, Sabine | 97 min |
| May 13, 2:55 PM CDT | Tornado Watch | SPC | Acadia, Allen, Assumption, Avoyelles, Bienville, Bossier and 31 more | 6 hr |
| May 13, 3:54 PM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Assumption, Avoyelles, Bienville, Caldwell and 29 more | 2 hr |
| May 13, 5:22 PM CDT | Mesoscale Discussion | SPC | Calcasieu | 53 min |
| May 13, 6:23 PM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Assumption, Avoyelles, Bienville, Caldwell and 30 more | 97 min |
| May 12, 8:04 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Callahan, Fisher, Foard, Hardeman and 13 more | 86 min |
| May 13, 3:52 AM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Austin, Bastrop, Brazos, Burleson and 27 more | 83 min |
| May 13, 8:30 AM CDT | Tornado Watch | SPC | Angelina, Austin, Bastrop, Brazos, Burleson, Caldwell and 17 more | 6 hr |
| May 13, 9:54 AM CDT | Mesoscale Discussion | SPC | Angelina, Austin, Bastrop, Brazos, Burleson, Caldwell and 17 more | 96 min |
| May 13, 10:20 AM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Cottle, Dickens, Foard and 10 more | 115 min |
| May 13, 10:45 AM CDT | Severe Thunderstorm Watch | SPC | Archer, Baylor, Clay, Foard, Hardeman, Knox and 2 more | 6 hr |
| May 13, 12:26 PM CDT | Mesoscale Discussion | SPC | Bandera, Brown, Callahan, Coke, Coleman, Concho and 26 more | 2 hr |
| May 13, 12:48 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Foard, Haskell, Knox and 4 more | 117 min |
| May 13, 12:55 PM CDT | Tornado Watch | SPC | Brown, Callahan, Coleman, Concho, Eastland, Haskell and 14 more | 6 hr |
| May 13, 2:30 PM CDT | Tornado Watch | SPC | Atascosa, Bandera, Bastrop, Bexar, Caldwell, Comal and 21 more | 6 hr |
| May 13, 2:48 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Haskell, Wichita | 87 min |
| May 13, 2:57 PM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coleman, Concho, Eastland, Haskell and 14 more | 2 hr |
| May 13, 3:34 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bastrop, Bexar, Caldwell, Comal and 21 more | 86 min |
| May 13, 5:54 PM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coleman, Concho, Eastland, Haskell and 14 more | 96 min |
| May 13, 6:55 PM CDT | Severe Thunderstorm Watch | SPC | Bandera, Edwards, Gillespie, Kerr, Kimble, Mason and 6 more | 5 hr |
Nearby
Tornado Watches in Texas, 2004Tornado Watches in Louisiana, 2004Every tornado watch in 2004
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.