Tornado Warning 24, NWS New Orleans, LA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA
350 AM CST TUE NOV 2 2004

.DISCUSSION...
THE MAIN FEATURE TO FOCUS ON TODAY WILL BE THE CUT OFF UPPER LEVEL
LOW RESIDING IN EASTERN NEW MEXICO AND WESTERN TEXAS.
HOWEVER...ANOTHER WEAKER SYSTEM WILL ALSO AFFECT THE CWA TODAY.  IN
THE CENTRAL GULF OF MEXICO...A WEAK TROUGH AND ASSOCIATED VORTICITY
MAXIMA WILL CONTINUE TO SERVE AS A FOCUS OF FEW SHOWERS AND
THUNDERSTORMS IN OUR EASTERN COASTAL WATERS AND FAR EASTERN COUNTIES
THIS ELONGATED TROUGH WILL SLOWLY SLIDE TO THE WEST INTO SOUTHEAST
LOUISIANA THIS EVENING.  AT THE SAME TIME...DIURNAL HEATING WILL
HELP DESTABILIZE THE ATMOSPHERE ENOUGH TO DEVELOP SCATTERED SHOWERS
AND THUNDERSTORMS.  THE THUNDERSTORM ACTIVITY WOULD BE MORE HIGHLY
SUPPRESSED DUE TO DRY AIR IN THE MID AND UPPER LEVELS OF THE
ATMOSPHERE...BUT ENOUGH FORCING ALONG THE ELONGATED TROUGH FROM 850
TO 700MB WILL PROVIDE ENOUGH LIFT TO OVERCOME THE MIDLEVEL
CAP...ALLOWING FOR CHANCE POPS IN THE REGION.  AS THE WEAK TROUGH
SLIDES TO THE WEST...THE STRONG UPPER LEVEL LOW IN TEXAS AND NEW
MEXICO WILL SLOWLY BEGIN TO LIFT OUT TO THE NORTHEAST.  SEVERAL
PIECES OF ENERGY...AND ASSOCIATED JET STREAKS WILL SWING AROUND THE
BASE OF THE LOW AND INTO THE WESTERN GULF AND LOUISIANA THROUGH THE
DAY.  THE MIDLEVEL TROUGH IN THE REGION WILL COMBINE WITH THE LARGER
TROUGH TO THE WEST AS THE DAY PROCEEDS.  IT APPEARS THAT THE BEST
DEEP LAYER MOISTURE PLUME...AND ASSOCIATED LIFT WILL REMAIN WEST OF
OUR CWA UNTIL THIS EVENING.  DUE TO THE SLOW MOVEMENT OF THE OVERALL
SYSTEM...EXPECT THE MOISTURE PLUME TO SLOWLY TRANSIT OVER OUR CWA
TONIGHT INTO TOMORROW MORNING.  HIGHER PRECIPITABLE WATER VALUES
WILL ADVECT INTO THE AREA...ALLOWING FOR A HEAVY RAIN EVENT TO SET
UP ACROSS THE STATE TONIGHT.  HOWEVER...THE UPPER LEVEL LOW AND
OVERALL PATTERN WILL BEGIN TO TURN MORE PROGRESSIVE LATE TONIGHT
INTO TOMORROW.  THIS WILL ALLOW THE MOISTURE TO PULL EAST INTO OUR
EASTERN CWA AND ALABAMA.  EXPECT THIS PLUME TO EXIT COASTAL
MISSISSIPPI AREA TOMORROW EVENING.  THE EXTENDED PERIOD IS STILL ON
TRACK...WITH A DEEP UPPER LEVEL TROUGH DEVELOPING ACROSS THE EASTERN
UNITED STATES...ALLOWING FOR A MUCH COOLER SCENARIO IN THE REGION.

&&

PRELIMINARY POINT TEMP/POPS...
MCB 82 69 73 53 / 50 80 40 00
BTR 84 70 75 53 / 40 80 40 00
MSY 87 73 77 59 / 30 80 60 00
GPT 84 73 76 58 / 30 80 80 20

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...NONE.
MS...NONE.
SE LA AND MS COASTAL WATERS...NONE.

&&

32

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
630 AM CST TUE NOV 2 2004

LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-021700-
AMITE-ASCENSION-ASSUMPTION-EAST BATON ROUGE-EAST FELICIANA-HANCOCK-
HARRISON-IBERVILLE-JACKSON-LIVINGSTON-LOWER JEFFERSON-
LOWER LAFOURCHE-LOWER PLAQUEMINES-LOWER ST BERNARD-LOWER TERREBONNE-
ORLEANS-PEARL RIVER-PIKE-POINTE COUPEE-ST CHARLES-ST HELENA-ST JAMES-
ST JOHN THE BAPTIST-ST TAMMANY-TANGIPAHOA-UPPER JEFFERSON-
UPPER LAFOURCHE-UPPER PLAQUEMINES-UPPER ST BERNARD-UPPER TERREBONNE-
WALTHALL-WASHINGTON-WEST BATON ROUGE-WEST FELICIANA-WILKINSON-
630 AM CST MON NOV 1 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL AND SOUTHEAST
LOUISIANA AND EXTREME SOUTHWEST...AND COASTAL MISSISSIPPI.

.DAY ONE...TODAY AND TONIGHT

...SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER THE
SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI TODAY AND TONIGHT...

...SYNOPSIS...
AN UPPER LEVEL LOW...AND A COLD FRONT WILL MOVE FROM TEXAS INTO
LOUISIANA.

...DISCUSSION...
THE UPPER LEVEL LOW...COMBINED WITH STRONG WINDS ALOFT...AND AMPLE
HEATING ACROSS THE REGION TODAY WILL ALLOW SCATTERED SHOWERS AND
THUNDERSTORMS TO DEVELOP ACROSS SOUTHEAST LOUISIANA AND COASTAL
MISSISSIPPI IN THE AFTERNOON HOURS.  OVERNIGHT...A DEEP MOISTURE
PLUME WILL SLIDE INTO THE REGION.  THIS MOISTURE PLUME WILL BE
ASSOCIATED WITH STRONG DYNAMICS IN ADVANCE OF THE UPPER LEVEL LOW.
AS A RESULT...AMPLE LIFT WILL BE IN PLACE.  WIDESPREAD SHOWER AND
THUNDERSTORM WILL DEVELOP OVER THE AREA...AND SLOWLY SLIDE EAST...AS
THE UPPER LEVEL LOW PULLS INTO THE OHIO VALLEY.  DUE TO THE SLOW
MOVEMENT OF THE ACTIVITY...LOCALLY HEAVY RAINFALL CAN BE EXPECTED.
BRIEF GUSTY WINDS AND LIGHTNING CAN ALSO BE EXPECTED OVERNIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

THE SLOW MOVING LOW PRESSURE SYSTEM WILL CONTINUE TO AFFECT AREAS OF
COASTAL MISSISSIPPI AND FAR SOUTHEAST LOUISIANA ON WEDNESDAY.
LOCALLY HEAVY RAINFALL WILL BE THE MAIN THREAT FROM THESE SHOWERS
AND THUNDERSTORMS.

NO HAZARDOUS WEATHER IS EXPECTED THURSDAY THROUGH MONDAY.

.SPOTTER INFORMATION STATEMENT...

THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS AND EMERGENCY
MANAGEMENT PERSONNEL...IN SUPPORT OF SEVERE WEATHER OPERATIONS...IS
NOT REQUESTED AT THIS TIME. HOWEVER...STORM SPOTTERS...HAM RADIO
OPERATORS AND EMERGENCY MANAGEMENT PERSONNEL SHOULD REMAIN AWARE OF
THE UPCOMING WEATHER SITUATION TUESDAY THROUGH WEDNESDAY MORNING.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
918 AM CST TUE NOV 02 2004

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

0905 AM     TSTM WND DMG     HOUMA                   29.58N 90.71W
11/02/2004                   TERREBONNE         LA   EMERGENCY MNGR

            THUNDERSTORM WIND DAMAGE OR POSSIBLE TORNADO DAMAGED A
            HOUSE AND BUILDING ON EAST SIDE OF HOUMA. EMERGENCY
            MANAGER ENROUTE INVESTIGATING DAMAGE.

&&

PRELIMINARY LOCAL STORM REPORT ... CORRECTION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
957 AM CST TUE NOV 02 2004

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

0905 AM     TORNADO          HOUMA                   29.58N 90.71W
11/02/2004  F0               TERREBONNE         LA   EMERGENCY MNGR

            EMERGENCY MANAGER REPORTED MINOR ROOF DAMAGE TO TWO
            BUILDINGS AND ONE HOUSE ON EAST SIDE OF HOUMA. SEVERAL
            LARGE TREE LIMBS BLOWN DOWN. SEVERAL REPORTS OF SHORT
            LIVED FUNNEL CLOUD.

&&

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1002 AM CST TUE NOV 2 2004

LAZ040-059>070-021730-
LOWER JEFFERSON-LOWER LAFOURCHE-LOWER PLAQUEMINES-LOWER ST BERNARD-
LOWER TERREBONNE-ORLEANS-ST CHARLES-ST TAMMANY-UPPER JEFFERSON-
UPPER LAFOURCHE-UPPER PLAQUEMINES-UPPER ST BERNARD-UPPER TERREBONNE-
1002 AM CST TUE NOV 2 2004

SCATTERED MODERATE TO HEAVY SHOWERS ARE FORMING OVER SOUTHEAST
LOUISIANA AND MOVING NORTHEAST AT 15 TO 20 MPH. THESE STORMS ARE
PRODUCING BRIEF HEAVY RAINFALL AMOUNTS OF ONE HALF TO ONE INCH OF
RAIN WITHIN 30 MINUTES. A FEW SHOWERS HAVE PRODUCED FUNNEL
CLOUDS IN THE HOUMA AND BELL CHASE AREAS DURING THE LAST 45 MINUTES.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION
STATIONS...FOR ADDITIONAL INFORMATION AND WARNINGS.