Alert archive / Texas / Flash Flood Warnings in 2007

Flash Flood Warning 35, NWS Shreveport, LA

July 5, 2007Smith County, Texas

NWS Shreveport, LA issued this flash flood warning at Jul 5, 2007, 10:47 AM CDT for Smith County, Texas. It was in force for 4 hr. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 5, 2007, 10:47 AM CDT (15:47 UTC)
Expired: Jul 5, 2007, 2:45 PM CDT
In force: 4 hr
Issued by: NWS Shreveport, LA
Area: Whole counties

County Smith County, TX

The radar

The Shreveport radar (KSHV), 134 km from the middle of the area, began a volume at 15:47 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.

What was reported inside it

Time	Report	Where	Remark
Jul 5, 11:00 AM CDT	FLASH FLOOD	Tyler, TX	SEVERAL ROADS CLOSED DUE TO FLASH FLOODING INCLUDING COUNTY ROADS 2301...474...496 AND 472. A LARGE SINKHOLE SITS ON COUNTY ROAD 2301 AFTER A CULVERT GAVE WAY.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 3.8 hours before the alert went out and 143 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 675 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 570 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS54 KSHV 051551
FFWSHV
TXC423-051945-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1047 AM CDT THU JUL 5 2007

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SMITH COUNTY IN NORTHEAST TEXAS...
  THIS INCLUDES THE CITIES OF...WHITEHOUSE...TYLER...

* UNTIL 245 PM CDT

* AT 1047 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM NEAR WHITEHOUSE...MOVING NORTH
  AT 15 MPH.  DOPPLER RADAR SHOWED ONE HOUR RAINFALL RATES BETWEEN 
  1 AND 1.25 INCHES SPREADING INTO THE SOUTHERN PART OF SMITH COUNTY.  
  CONSIDERING THE PERSISTENT RAINFALL AND ITS RELATIVELY SLOW 
  MOVEMENT...ADDITIONAL FLASH FLOODING IS POSSIBLE ACROSS SMITH 
  COUNTY INTO MID AFTERNOON.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  LINDALE...ARP...TYLER...WHITEHOUSE...AND FLINT.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

LAT...LON 3215 9546 3214 9500 3254 9500 3257 9530
      3261 9550 3267 9558 3248 9557 3236 9544

$$

BUTTS

2 follow-up statements

000 
WGUS74 KSHV 051651
FFSSHV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1146 AM CDT THU JUL 5 2007

TXC423-051945-
SMITH TX-
1146 AM CDT THU JUL 5 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 PM CDT FOR SMITH
COUNTY...

AT 1146 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE SHOWERS AND THUNDERSTORMS COVERING ALL OF SMITH COUNTY.  
THUNDERSTORMS PRODUCING THE HEAVIEST RAINFALL WERE AFFECTING AREAS 
NORTHEAST OF A LINE FROM LINDALE...TO TYLER AND ARP.  DOPPLER 
RAINFALL STILL SHOWED ONE HOUR RAINFALL AMOUNTS IN EXCESS OF AN INCH 
WITH THESE THUNDERSTORMS.  BECAUSE OF THE SATURATED SOIL 
CONDITIONS...ADDITIONAL FLASH FLOODING IS POSSIBLE AS THESE STORMS 
MOVE THROUGH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LINDALE... 
TYLER...ARP...AND WINONA.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO 
CROSS WATER COVERED BRIDGES...DIPS...OR LOW WATER CROSSINGS. NEVER 
TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO 
ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

STAY TUNED FOR FURTHER UPDATES FROM YOUR NATIONAL WEATHER SERVICE IN 
SHREVEPORT.

LAT...LON 3215 9546 3214 9500 3254 9500 3257 9530
      3261 9550 3267 9558 3248 9557 3236 9544

$$

BUTTS

000 
WGUS74 KSHV 051948
FFSSHV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
248 PM CDT THU JUL 5 2007

TXC423-051956-
SMITH TX-
248 PM CDT THU JUL 5 2007

...THE FLASH FLOOD WARNING HAS EXPIRED FOR SMITH COUNTY...

AT 248 PM CDT...DOPPLER RADAR AT THE NATIONAL WEATHER SERVICE IN 
SHREVEPORT SHOWED ONLY LIGHT RAIN SHOWERS MOVING NORTH ACROSS 
WESTERN SMITH COUNTY...WEST OF HIGHWAY 69.  SINCE THE BAND OF 
HEAVIER RAINFALL HAS PASSED...ONE HOUR RAINFALL TOTALS HAVE DROPPED 
BELOW A QUARTER INCH.  AS SUCH...THE FLASH FLOOD WARNING WAS ALLOWED 
TO EXPIRE AT 245 PM.

STAY TUNED FOR FURTHER UPDATES FROM YOUR NATIONAL WEATHER SERVICE IN 
SHREVEPORT.

LAT...LON 3215 9546 3214 9500 3254 9500 3257 9530
      3261 9550 3267 9558 3248 9557 3236 9544

$$

BUTTS

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Shreveport, LA wrote its last area forecast discussion before this flash flood warning went out at Jul 5, 4:02 AM CDT, 6 hours 45 minutes earlier.

Area forecast discussion, Jul 5, 4:02 AM CDT, 6 hours 45 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
402 AM CDT THU JUL 5 2007

.DISCUSSION...
RAIN DEVELOPING OVER CWA THIS MORNING AND MORE HEADING NORTH
FROM SOUTHEAST TEXAS. SO WHATS NEW. ALMOST ACTING LIKE AN
INVERTED TROUGH OF A DIFFERENT SEASON. MODELS ALL AGREE IT
IS GOING TO BE A WET DAY WITH TEMPS RATHER COOL. WOULD NOT BE
SURPRISED IF SOME LOCATIONS DID NOT GET OUT OF THE 70S.

BEYOND TODAY...WILL HAVE TO RAISE POPS IN CURRENT FORECAST
FOR FRIDAY. LOW STILL HANGING OUT OVER EAST TEXAS. IT EVEN LOOKS
LIKE THE PESKY THING COULD BE LEFT BEHIND AS THE UPPER TROUGH
MOVING ACROSS THE OHIO AND TENNESSEE VALLEYS SWINGS INTO ATLANTIC
FRIDAY AFTERNOON...WITH THE GFS NOW SHOWING THE UPPER LOW IN
SOUTHWEST ARKANSAS SATURDAY. HOWEVER...IF THIS COMES TO PASS...
AT LEAST THE WESTERN HALF OF THE CWA WOULD HAVE A LOWER CHANCE
OF RAIN...AS LOW LEVEL WINDS BECOME WESTERLY. UNFORTUNATELY
THE WEST WINDS DO NOT REMAIN LONG...AND BY SUNDAY THE GULF IS
OPEN FOR BUSINESS AGAIN. NOT TOO SURE WHAT HAPPENS TO THE GFS
AFTER THIS...ITS MOS CUTS OFF THE POPS...BUT THE SYNOPTIC
PATTERN SHOWS A TROF STILL HANGING OUT OVER TEXAS WITH SEVERAL
SHORT WAVES DIGGING SOUTHEAST FROM THE ROCKIES. THEREFORE
CONTINUING WITH CHANCE POPS INTO THE MIDDLE OF NEXT WEEK
AS PREVIOUSLY FORECAST.

ANOTHER UNSEASONABLY COOL DAY TODAY...THEN A WARMING TREND...BACK
TO NEAR NORMAL BY SUNDAY AS RAIN CHANCES LESSEN.

&&

.AVIATION...

CHRISTMAS IN JULY WITH OVERRUNNING TYPE PRECIP.  WATER VAPOR IMAGERY
SHOWS UPPER LEVEL LOW OVER THE TEXAS COAST FOR THE MOST
PART...HIDDEN SOMEWHAT BY CONVECTIVE DEBRIS. A BIG SLUG OF
CONVECTION CURRENTLY WORKING UP THE COASTAL BEND...APPEARS TO BE
HAVING A FORCING EFFECT OVER OUR CWA WITH WIDESPREAD -RA OR SHRA
LIFTING NORTH THIS MORNING.  MVFR CIGS AND -RA AT A FEW SITES AND
ANY AND ALL SUSCEPTIBLE OVER THE NEXT SEVERAL HOURS.  MAYBE ITS ALL
THE PARTICULATES IN THE AIR FROM THE FOURTHS FIREWORKS IN THIS
SATURATED AIR...00Z KSHV PWATS OVER 2 INCHES. RADAR ECHOS OVER THE
EAST MOVING NE AND OVER THE WEST MOVING NW.  SO...SOME MID AND OR
UPPER LEVEL DIVERGENCE SHOULD MAKE FOR A BANNER DAY.  EXPECT HIGH
POPS TODAY WITH TSRA ACTIVITY FAIR GAME AT ANY TIME...ANYWHERE.
MIDDAY ORGANIZED CLUSTERS COULD GUST THE WIND TO 30 KTS...BUT MOST
WILL STAY FAR BELOW THAT WITH PREVAILING DIRECTION EASTERLY LESS
THAN 10KTS FOR THE MOST PART. /24/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  83  70  84  72 /  70  50  70  50
MLU  86  71  86  72 /  70  50  60  50
DEQ  85  69  88  68 /  60  50  50  50
TXK  85  69  86  70 /  60  50  60  50
ELD  87  70  88  70 /  60  50  50  50
TYR  83  72  84  71 /  80  50  70  50
GGG  83  71  84  71 /  80  50  70  50
LFK  84  72  84  72 /  80  50  60  50

&&

.SHV WATCHES/WARNINGS/ADVISORIES...
AR...NONE.
LA...NONE.
OK...NONE.
TX...NONE.
&&

14/24

Hazardous weather outlook, Jul 5, 6:00 AM CDT, 4 hours 47 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
600 AM CDT THU JUL 5 2007

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-051700-
ANGELINA-BIENVILLE-BOSSIER-BOWIE-CADDO-CALDWELL-CAMP-CASS-CHEROKEE-
CLAIBORNE-COLUMBIA-DE SOTO-FRANKLIN-GRANT-GREGG-HARRISON-HEMPSTEAD-
HOWARD-JACKSON-LA SALLE-LAFAYETTE-LINCOLN-LITTLE RIVER-MARION-
MCCURTAIN-MILLER-MORRIS-NACOGDOCHES-NATCHITOCHES-NEVADA-OUACHITA-
PANOLA-RED RIVER LA-RED RIVER TX-RUSK-SABINE LA-SABINE TX-
SAN AUGUSTINE-SEVIER-SHELBY-SMITH-TITUS-UNION AR-UNION LA-UPSHUR-
WEBSTER-WINN-WOOD-
600 AM CDT THU JUL 5 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST OKLAHOMA...NORTHEAST
TEXAS...SOUTHWEST ARKANSAS...NORTHWEST AND NORTH CENTRAL LOUISIANA.

.DAY ONE...TODAY AND TONIGHT...

SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED ACROSS
THE FOUR STATE REGION TODAY AND TONIGHT. DUE TO AN UNSTABLE AND VERY
MOIST ATMOSPHERE...RAINFALL WILL BE HEAVY AT TIMES.  RAINFALL RATES
UP TO TWO INCHES PER HOUR ARE POSSIBLE...WHICH COULD LEAD TO
LOCALIZED FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

SCATTERED THUNDERSTORMS WILL CONTINUE...MAINLY DURING THE AFTERNOON
AND EARLY EVENING HOURS. THE MORE INTENSE STORMS WILL BE CAPABLE OF
PRODUCING LOCALLY HEAVY RAINFALL...GUSTY WINDS...AND FREQUENT
LIGHTNING.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY
MANAGEMENT PERSONNEL IS NOT ANTICIPATED THROUGH TONIGHT.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 5, 9:54 AM CDT	Flash Flood Warning	SHV	Cherokee	4 hr
Jul 5, 10:19 AM CDT	River Flood Warning	SHV	Anderson, Cherokee, Houston, Trinity	23 days
Jul 5, 10:19 AM CDT	River Flood Warning	SHV	Angelina, Houston, Polk, Trinity, Tyler	33 days
Jul 5, 12:49 PM CDT	River Flood Warning	SHV	Wood	5 days
Jul 5, 12:51 PM CDT	River Flood Warning	SHV	Gregg, Smith, Upshur, Wood	26 days
Jul 5, 4:07 PM CDT	Flash Flood Watch	SHV	Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more	29 hr

Nearby

Flash Flood Warnings in Texas, 2007 Every flash flood warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.