Flash Flood Warning 18, NWS New Orleans, LA

000 
WGUS74 KLIX 101928
FFSLIX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
228 PM CDT MON AUG 10 2009

LAC051-101937-
/O.CAN.KLIX.FF.W.0018.000000T0000Z-090810T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JEFFERSON LA-
228 PM CDT MON AUG 10 2009

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHERN JEFFERSON
PARISH...

LAT...LON 2978 9015 2983 9016 2986 9019 2996 9019
      2996 9013 2993 9013 2992 9008 2994 9005
      2990 9000 2987 9001 2984 9006 2978 9006

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1247 PM CDT MON AUG 10 2009

.AVIATION...
A TROPICAL AIRMASS WILL REMAIN IN PLACE ACROSS THE FORECAST AREA
THIS AFTERNOON RESULTING IN FAIRLY DECENT SHOWER AND THUNDERSTORM
COVERAGE AGAIN THROUGH THE AFTERNOON HOURS. THE THREAT FOR
CONVECTION WILL BASICALLY COME TO AN END AFTER SUNSET. MVFR
VISIBILITIES DUE TO LIGHT FOG WILL BE POSSIBLE AT KBTR AND KMCB
AROUND DAYBREAK TUESDAY MORNING...OTHERWISE VFR CONDITIONS WILL
PREVAIL OVERNIGHT THROUGH 18Z TUESDAY. 18

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...NONE.
GM...NONE.
MS...NONE.
GM...NONE.
&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1102 AM CDT MON AUG 10 2009

GMZ530-550-555-570-575-LAZ034>040-046>050-056>070-MSZ068>071-077-
080>082-111615-
LAKE PONTCHARTRAIN AND LAKE MAUREPAS-
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO LOWER ATCHAFALAYA RIVER LA OUT 20 NM-
COASTAL WATERS FROM PASCAGOULA MS TO THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER OUT 20 NM-
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO LOWER ATCHAFALAYA RIVER LA FROM 20 TO 60 NM-
COASTAL WATERS FROM PASCAGOULA MS TO THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER FROM 20 TO 60 NM-POINTE COUPEE-WEST FELICIANA-
EAST FELICIANA-ST. HELENA-TANGIPAHOA-WASHINGTON-ST. TAMMANY-
IBERVILLE-WEST BATON ROUGE-EAST BATON ROUGE-ASCENSION-LIVINGSTON-
ASSUMPTION-ST. JAMES-ST. JOHN THE BAPTIST-UPPER LAFOURCHE-
ST. CHARLES-UPPER JEFFERSON-ORLEANS-UPPER PLAQUEMINES-
UPPER ST. BERNARD-UPPER TERREBONNE-LOWER TERREBONNE-
LOWER LAFOURCHE-LOWER JEFFERSON-LOWER PLAQUEMINES-
LOWER ST. BERNARD-WILKINSON-AMITE-PIKE-WALTHALL-PEARL RIVER-
HANCOCK-HARRISON-JACKSON-
1102 AM CDT MON AUG 10 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF COASTAL WATERS
OF SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI...SOUTHEAST
LOUISIANA AND SOUTHERN MISSISSIPPI.

.DAY ONE...TODAY AND TONIGHT
SCATTERED THUNDERSTORMS WILL DEVELOP...STARTING MOSTLY IN COASTAL
SECTIONS AND SPREADING INLAND THROUGH THE AFTERNOON. SOME OF
THE STORMS COULD BECOME STRONG PRODUCING WINDS UP TO 35
MPH AND FREQUENT LIGHTNING. SLOW AND ERRATIC MOVEMENT WILL ALSO
ADD TO THE POSSIBILITY OF HEAVY RAIN FOR SOME ISOLATED LOCATIONS.
A HIGHER PROBABILITY OF STRONG THUNDERSTORMS WILL EXIST OVER THE
WESTERN HALF OF THE AREA MAINLY DURING THE AFTERNOON TODAY. A FEW
WATERSPOUTS MAY FORM WITH DEVELOPING SHOWERS AND THUNDERSTORMS
NEAR THE COAST AND OVER THE TIDAL LAKES...BAYS AND COASTAL WATERS
THROUGH THIS AFTERNOON.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
SCATTERED THUNDERSTORM ACTIVITY IS EXPECTED EACH DAY. SOME OF
THESE MAY BE STRONG WITH AN ISOLATED SEVERE THUNDERSTORM POSSIBLE.
HEAVY RAINFALL DUE TO SLUGGISH MOVEMENT WILL CONTINUE TO BE THE
MAIN CONSIDERATION. RAIN CHANCES MAY INCREASE LATE IN THE WEEKEND
AS A STRONG TROPICAL WAVE ENTERS THE GULF.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

22/TD

LAZ061-063-101900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1257 PM CDT MON AUG 10 2009

...CLUSTER OF STRONG THUNDERSTORMS NEARLY STATIONARY AFFECTING
JEFFERSON PARISH...

AT 1254 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS OVER MARRERO. THE THUNDERSTORMS WERE
NEARLY STATIONARY.

THIS CLUSTER OF STORMS COULD PRODUCE RAINFALL AMOUNTS OF ONE TO TWO
INCHES IN A SHORT PERIOD OF TIME WITH LOCALLY HIGHER AMOUNTS. THIS
COULD RESULT IN PONDING OF WATER AND EVEN MINOR FLOODING IN AND
AROUND LOW LYING AREAS AND ON ROADWAYS. REMEMBER...DO NOT DRIVE YOUR
VEHICLE INTO WATER COVERED ROADWAYS. THE DEPTH MAY BE TOO GREAT TO
ALLOW A SAFE CROSSING.

THE PRIMARY THREATS FROM THESE STORMS ARE FREQUENT LIGHTNING AND WIND
GUSTS 35 TO 45 MPH...WHICH COULD DOWN TREE LIMBS AND BLOW AROUND
UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING
UNTIL THESE STORMS HAVE PASSED.