Alert archive / Texas / Flash Flood Warnings in 2005

Flash Flood Warning 13, NWS Shreveport, LA

August 7, 2005Gregg County, Texas

NWS Shreveport, LA issued this flash flood warning at Aug 7, 2005, 5:11 PM CDT for Gregg County, Texas. It was in force for 2 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 7, 2005, 5:11 PM CDT (22:11 UTC)
Expired
Aug 7, 2005, 7:15 PM CDT
In force
2 hr
Issued by
NWS Shreveport, LA
Area
Counties, with a storm outline in the text

County Gregg County, TX

The radar

The Shreveport radar (KSHV), 83 km from the middle of the area, began a volume at 22:14 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

TimeReportWhereRemark
Aug 7, 6:30 PM CDTFLASH FLOODLakeport, TXWATER OVER THE JONES ROAD BRIDGE

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, 10.2 hours before the alert went out and 92 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-pSkew-T log-p diagram, Shreveport, LA at 12:00Z on 2005-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 728 joules per kilogram.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.
HodographHodograph, Shreveport, LA at 12:00Z on 2005-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 square meters per square second.1939Sfc1 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.
Mixed-layer CAPE
728 J/kg
Mixed-layer CIN
-115 J/kg
Mixed-layer LCL
1250 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
86 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 072214
FFWSHV
TXC183-080015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
511 PM CDT SUN AUG 7 2005

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GREGG COUNTY IN NORTHEAST TEXAS

* UNTIL 715 PM CDT

* AT 507 PM CDT...SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED UP TO 5 INCHES OF RAIN HAD FALLEN NEAR THE COMMUNITY
  OF LAKEPORT IN SOUTHEASTERN GREGG COUNTY. AN ADDITIONAL INCH OR
  TWO OF RAINFALL IS POSSIBLE THERE. THE THUNDERSTORMS WERE ALSO
  BACKBUILDING INTO LONGVIEW...WHERE HEAVY RAIN MAY ALSO PRODUCE
  FLASH FLOODING.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD
WARNING FOR...
  GREGG COUNTY IN NORTHEAST TEXAS
UNTIL 715 PM CDT.

LAT...LON 3254 9489 3262 9476 3264 9470 3242 9470
      3239 9466 3239 9459 3237 9459 3237 9479

$$

17
1 follow-up statement
000 
WGUS74 KSHV 072312
FFSSHV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
610 PM CDT SUN AUG 7 2005

TXC183-080015-
GREGG TX-
610 PM CDT SUN AUG 7 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 715 PM CDT FOR GREGG
COUNTY...

AT 603 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT RAIN HAD NEARLY ENDED OVER THE WARNED AREA.

HOWEVER...REMEMBER THAT EXCESSIVE RUNOFF FROM HEAVY RAINFALL 
CAN CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY 
ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND 
STREAMS...EVEN AFTER RAINFALL HAS ENDED.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

LAT...LON 3254 9489 3262 9476 3264 9470 3242 9470
      3239 9466 3239 9459 3237 9459 3237 9479

$$

17

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 5:29 PM CDTSevere Thunderstorm WarningSHVUpshur51 min
Aug 7, 5:47 PM CDTSevere Thunderstorm WarningSHVTitus43 min
Aug 7, 6:27 PM CDTSevere Thunderstorm WarningSHVBowie63 min

Nearby

Flash Flood Warnings in Texas, 2005Every flash flood warning in 2005

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.