Flash Flood Warning 49, NWS Houston/Galveston, TX

000 
WGUS74 KHGX 161955
FFSHGX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
255 PM CDT MON OCT 16 2006

TXC201-291-339-407-473-162130-
SAN JACINTO TX-MONTGOMERY TX-LIBERTY TX-WALLER TX-HARRIS TX-
255 PM CDT MON OCT 16 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
HARRIS...WALLER...LIBERTY...MONTGOMERY AND SAN JACINTO COUNTIES...

AT 300 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE TRAINING SHOWERS AND THUNDERSTORMS...SOME CONTAINING VERY 
HEAVY RAIN FALLING AT A RATE OF 1 TO 3 INCHES PER HOUR...ACROSS THE 
WARNED COUNTIES. 

FLOODING CONTINUES TO BE EXPECTED IN OR NEAR...
A LINE FROM MOSS HILL TO LIBERTY TO CROSBY TO THE HOUSTON AREA.

SOME OF THESE HEAVY RAINS ARE FALLING ACROSS LOCATIONS THAT  
RECEIVED HEAVY RAINFALL AND FLOODING EARLIER TODAY. THIS CONTINUES 
TO BE A DANGEROUS FLASH FLOOD SITUATION. THREE PEOPLE HAVE ALREADY 
BEEN KILLED IN THE FLOODING. DO NOT DRIVE YOUR VEHICLE INTO AREAS 
WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT 
FOR YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD 
BE ABANDONED QUICKLY.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL MAY CAUSE FLOODING OF LAND
ADJACENT TO SMALL CREEKS AND BAYOUS. ADDITIONALLY...FRONTAGE ROADS...
HIGHWAY UNDERPASSES...FARM-TO-MARKET AND OTHER SECONDARY ROADS MAY
FLOOD. AVOID LOCATIONS WHERE WATER COVERS THE GROUND

A FLOOD WATCH IS IN EFFECT FOR THE WARNED AREA UNTIL 400 PM CDT. 
THIS FLOOD WATCH WILL BE EXTENDED UNTIL 800 PM CDT LATER THIS 
AFTERNOON FOR THESE COUNTIES.

PLEASE REPORT FLOODING OR OTHER SEVERE WEATHER TO THE COUNTY 
SHERIFF...LOCAL POLICE...OR DEPARTMENT OF PUBLIC SAFETY. THEY WILL 
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

LAT...LON 3064 9510 3055 9505 3047 9479 3013 9462
      3011 9446 2991 9446 2992 9496 2972 9494
      2970 9502 2959 9502 2971 9561 2982 9581
      2978 9599 3014 9608 3028 9578 3057 9580
      3051 9561 3050 9535 3083 9529 3069 9520

$$

000 
WGUS74 KHGX 162050
FFSHGX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
345 PM CDT MON OCT 16 2006

TXC201-291-339-407-473-162130-
SAN JACINTO TX-MONTGOMERY TX-LIBERTY TX-WALLER TX-HARRIS TX-
345 PM CDT MON OCT 16 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
HARRIS...WALLER...LIBERTY...MONTGOMERY AND SAN JACINTO COUNTIES...

AT 345 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE TRAINING SHOWERS AND THUNDERSTORMS CONTAINING VERY HEAVY 
RAIN FROM MOSS HILL TO CROSBY TO THE HOUSTON AREA. RAINFALL RATES 
WITH THE STRONGER STORMS ARE AVERAGING 1 TO 3 INCHES PER HOUR...AND 
THIS IS LIKELY CAUSING ADDITIONAL FLASH FLOODING ACROSS LIBERTY AND 
HARRIS COUNTIES. 

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE LIKELY IN THE 
WARNED AREA. THIS WILL LEAD TO DANGEROUS LIFE THREATENING FLASH 
FLOODING. 

WITH ONLY LIGHT TO MODERATE RAINS NOW FALLING ACROSS WALLER... 
MONTGOMERY AND SAN JACINTO COUNTIES...THE FLASH FLOOD WARNING FOR 
THESE THREE COUNTIES WILL BE ALLOWED TO EXPIRE AT 430 PM CDT.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT FOR YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.

A FLOOD WATCH IS IN EFFECT FOR THE WARNED AREA UNTIL 800 PM CDT.

PLEASE REPORT FLOODING OR OTHER SEVERE WEATHER TO THE COUNTY
SHERIFF...LOCAL POLICE...OR DEPARTMENT OF PUBLIC SAFETY. THEY WILL
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

LAT...LON 3064 9510 3055 9505 3047 9479 3013 9462
      3011 9446 2991 9446 2992 9496 2972 9494
      2970 9502 2959 9502 2971 9561 2982 9581
      2978 9599 3014 9608 3028 9578 3057 9580
      3051 9561 3050 9535 3083 9529 3069 9520

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1052 AM CDT MON OCT 16 2006

.UPDATE...
SCATTERED TO NUMEROUS SHRA/TSRA MAINLY NORTHERN 2/3 OF CWFA THIS
MID MORNING. TRAINING NOTED WITH MID/UPPER LEVEL SW FLOW. HENCE
DESPITE FAST MOVING STORMS...2 INCHES/HR NOTED PORTIONS OF
NORTHERN ZONES. WE EXPANDED FFA FOR REMAINDER OF CWFA
(NORTHWEST/NORTHERN ZONES) UNTIL 4 PM CDT. SOUNDINGS TAKEN THIS
MORNING INDICATE PW VALUES ABOUT 2.6 INCHES OVER REGION. 0-3KM
HELICITY VALUES EARLIER THIS MORNING WAS UP TO 800 M2/SEC2. MODELS
INDICATE THE MORE EXTENSIVE CONVECTIVE COVERAGE WILL BE OVER
EASTERN ZONES AS THE AFTERNOON PROGRESSES. UPDATED 1ST PERIOD
ZFPHGX REFLECTING UPDATED FFAHGX AND RECONFIGURED WCN.
37

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...COASTAL FLOOD WARNING UNTIL 4 PM MONDAY FOR THE FOLLOWING ZONES:
     BRAZORIA...CHAMBERS...GALVESTON...AND HARRIS.

     FLOOD WATCH UNTIL 4 PM MONDAY FOR THE FOLLOWING ZONES: AUSTIN...
     BRAZORIA...BRAZOS...BURLESON...CHAMBERS...COLORADO...FORT
     BEND...GALVESTON...GRIMES...HARRIS...HOUSTON...JACKSON...
     LIBERTY...MADISON...MATAGORDA...MONTGOMERY...POLK...SAN
     JACINTO...TRINITY...WALKER...WALLER...WASHINGTON...AND
     WHARTON.

GM...SMALL CRAFT ADVISORY UNTIL 5 PM MONDAY FOR THE FOLLOWING ZONES:
     GALVESTON BAY...AND MATAGORDA BAY.

     SMALL CRAFT ADVISORY UNTIL 7 AM TUESDAY FOR THE FOLLOWING ZONES:
     WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL 20 NM TO
     60 NM...WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL
     OUT 20 NM...WATERS FROM HIGH ISLAND TO FREEPORT 20 TO 60
     NM...AND WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
558 AM CDT MON OCT 16 2006

TXZ163-164-176>179-195>200-210>214-226-227-235>238-171100-
AUSTIN-BRAZORIA-BRAZOS-BURLESON-CHAMBERS-COLORADO-FORT BEND-
GALVESTON-GRIMES-HARRIS-HOUSTON-JACKSON-LIBERTY-MADISON-MATAGORDA-
MONTGOMERY-POLK-SAN JACINTO-TRINITY-WALKER-WALLER-WASHINGTON-
WHARTON-
558 AM CDT MON OCT 16 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT
A VERY SERIOUS FLOOD EVENT IS UNDERWAY FOR PARTS OF SOUTHEAST
TEXAS. ELEVATED TIDES IN COMBINATION WITH HEAVY RAIN WILL
EXACERBATE THE FLOODING SITUATION. RAINFALL AMOUNTS THIS MORNING
WILL AVERAGE AROUND AN INCH ALONG THE IMMEDIATE COAST...2 TO 3
INCHES ALONG THE U.S. 59 CORRIDOR AND 3 TO 4 INCHES WEST OF THE
U.S. 59 CORRIDOR.

AN UPPER LEVEL TROUGH OF LOW PRESSURE WILL APPROACH THE AREA THIS
AFTERNOON AND TRIGGER ADDITIONAL STORMS. ADDITIONAL HEAVY RAIN
WILL DEVELOP THIS AFTERNOON.

IN ADDITION TO THE HEAVY RAIN...SPEED AND DIRECTIONAL WIND SHEAR
WILL PRODUCE IDEAL CONDITIONS FOR TORNADOES TO DEVELOP. GREATER
INSTABILITY THIS AFTERNOON MAY PRODUCE DAMAGING DOWNBURST WINDS
IN ADDITION TO THE TORNADO THREAT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
STORM SPOTTERS AND EMERGENCY MANAGERS SHOULD BE PREPARED FOR
ACTIVATION.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1145 AM CDT MON OCT 16 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0600 AM     FLASH FLOOD      HOUSTON                 29.77N 95.39W
10/16/2006                   HARRIS             TX   LAW ENFORCEMENT

            *** 2 FATAL *** EVENT TIME IS HIGHLY UNCERTAIN. TWO
            FEMALES DROWNED IN AN SUV AT I-45 AND TELLEPSEN. THE
            VICTIMS WERE DISCOVERED AS FLOOD WATERS BEGAN TO SLOWLY
            RECEDE AND LAW ENFORCEMENT BEGAN TO NOTICE THE TOP OF
            THEIR VEHICLE. THE SUV WAS PULLED OUT OF THE WATER AND
            THE TWO VICTIMS WERE DISCOVERED IN THE BACK OF THE
            VEHICLE.

&&

42