Alert archive / Texas / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 131, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jun 13, 2004, 3:35 PM CDT for Walker County, Texas. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 13, 2004, 3:35 PM CDT (20:35 UTC)
- Expired
- Jun 13, 2004, 4:15 PM CDT
- In force
- 40 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Counties, with a storm outline in the text
County Walker County, TX
The radar
The Houston radar (KHGX), 149 km from the middle of the area, began a volume at 20:38 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.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.6 hours before the alert went out and 238 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
- 1653 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 822 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Jun 13, 2:32 PM CDT, 1 hour 3 minutes earlier.
Area forecast discussion, Jun 13, 2:32 PM CDT, 1 hour 3 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 232 PM CDT SUN JUN 13 2004 .DISCUSSION... SHOWERS AND THUNDERSTORMS HAVE DEVELOPED THIS AFTERNOON ACROSS PORTIONS OF SOUTHEAST TEXAS MAINLY ALONG AND NORTH OF I-10 WHERE IT APPEARS THAT THE BEST LOW LEVEL CONVERGENCE CAN BE FOUND. SOME CELL TRAINING MAY LEAD TO SOME LOCALIZED 2 TO 3 INCH RAINFALL TOTALS AND WE COULD GET SOME HAIL BEFORE ACTIVITY BEGINS TO WIND DOWN THIS EVENING. ALL EYES THEN BEGIN TO TURN TO THE GULF WHERE IT APPEARS THAT THE TROPICAL DISTURBANCE SOUTHEAST OF BROWNSVILLE IS BECOMING BETTER ORGANIZED. AN AIRCRAFT IS INVESTIGATING THE SYSTEM THIS AFTERNOON. MODELS CONTINUE THEIR ADVERTISEMENT OF INCREASING RAIN CHANCES THROUGH MIDWEEK ACROSS SOUTHEAST TEXAS AS MOISTURE FROM THE DISTURBANCE BUILDS TO THE NORTH AND NORTHWEST TOWARD THE GULF COAST AND A MID/UPPER LEVEL LOW CLOSES OFF OFF SOMEWHERE BETWEEN OUR AREA AND THE CORPUS CHRISTI AREA. A DEEP TROPICAL AIRMASS WITH PRECIP WATER VALUES ABOVE 2 INCHES WILL FLOW INTO THE WESTERN AND CENTRAL GULF COAST STATES WHERE EXCESSIVE RAINFALL IS POSSIBLE AS THE TROPICAL SYSTEM GENERALLY MOVES TO THE NORTH. EXACT LOCATION AND STRENGTH OF THE TEXAS CLOSED LOW WILL BE OUR MAIN PLAYER IN DETERMINING WHETHER OR NOT SOME OF OUR AREA GETS HEAVY RAINFALL. MODELS ARE INDICATING THAT THE CIRCULATION MIGHT END UP TO OUR WEST WHICH WOULD BRING THE DEEPER MOISTURE INTO OUR AREA. WILL CALL FOR 40% POPS ON MONDAY AND RAISE THEM TO 60% ON TUESDAY DURING THE SUGGESTED TIME OF BEST GULF INFLOW. IT IS POSSIBLE THAT THE MID/ UPPER LEVEL LOW MEANDERS AROUND THE AREA FOR A COUPLE OF DAYS AND GIVES US SEVERAL ROUNDS OF HEAVY RAINFALL. OUR HAZARDOUS WEATHER OUTLOOK ALREADY TALKS ABOUT THE HEAVY RAIN THREAT. FOR NOW...WILL NOT MENTION THIS IN THE ZONES. THE FORECAST WILL CONTINUE TO CALL FOR A GRADUAL DRYING OUT AND WARMER TEMPERATURES TOWARD THE END OF THE WEEK AND NEXT WEEKEND AS RIDGING BEGINS TO REPLACE THIS WEEKS MESS. 41/38 && .HGX WATCHES/WARNINGS/ADVISORIES...NONE. && .PRELIMINARY POINT TEMPS/POPS... COLLEGE STATION (CLL) 74 91 74 89 75 / 20 30 30 50 30 HOUSTON (IAH) 75 90 75 88 75 / 20 40 30 60 30 GALVESTON (GLS) 79 87 79 86 79 / 20 40 30 60 30 &&
Hazardous weather outlook, Jun 13, 7:00 AM CDT, 8 hours 35 minutes before
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</html>The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 6:13 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 32 min |
| Jun 13, 6:31 PM CDT | Special Marine Warning | HGX | 89 min | |
| Jun 13, 6:46 PM CDT | Flash Flood Warning | HGX | Harris | 119 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2004Every severe thunderstorm warning 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.