Tornado Warning 23, NWS New Orleans, LA

945 
WWUS54 KLIX 052008
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
308 PM CDT SAT JUN 5 2010

LAC075-052015-
/O.CON.KLIX.TO.W.0023.000000T0000Z-100605T2015Z/
PLAQUEMINES LA-
308 PM CDT SAT JUN 5 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR CENTRAL
PLAQUEMINES PARISH...

AT 307 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A TORNADO.  THIS TORNADO WAS LOCATED NEAR BURAS...OR 16 MILES
SOUTHEAST OF PORT SULPHUR...MOVING NORTHEAST AT 15 MPH.

THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
INDICATED PARISH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS UNDER A WORKBENCH OR OTHER
PIECE OF STURDY FURNITURE. SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM
WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 2926 8962 2931 8968 2948 8956 2949 8951
      2951 8954 2954 8951 2953 8949 2950 8951
      2946 8950 2945 8952 2940 8950 2943 8946
      2940 8931 2948 8919 2937 8934 2923 8947
TIME...MOT...LOC 2008Z 224DEG 15KT 2939 8947

$$
JER

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1124 AM CDT SAT JUN 5 2010

.AVIATION...PATCHY AREAS MVFR CEILINGS CONTINUE NEAR THE COAST
LATE THIS MORNING WITH THUNDERSTORMS BEGINNING TO FORM FURTHER
INLAND. CONVECTION WILL INCREASE IN COVERAGE AS THE DAY PROGRESSES
PEAKING DURING THE EARLY TO MID AFTERNOON HOURS THEN QUIETING DOWN
FOR THE EVENING. THE THUNDERSTORMS WILL BRING BRIEF PERIODS OF
MVFR TO IFR BUT OVERALL VFR CONDITIONS WILL PREVAIL THIS
AFTERNOON. PATCHY FOG OVERNIGHT WILL BRING SPOTTY MVFR CONDITIONS
THROUGH THE EARLY MORNING HOURS.

&&

.PREV DISCUSSION... /ISSUED 954 AM CDT SAT JUN 5 2010/

UPDATE...

..SOUNDING DISCUSSION...

NO PROBLEMS WITH THE FLIGHT THIS MORNING. ANOTHER UNSTABLE MORNING
AND PLENTY OF AVAILABLE MOISTURE...WITH AN LI OF -8.9 AND A PW OF
1.74 INCHES. A MINOR CAP IN PLACE ABOVE 95O MILLIBARS WILL LIKELY
ERODE AWAY VERY QUICKLY AS THE DAY PROGRESS WITH PLENTY OF MIXING
AND DAYTIME HEATING. MEANWHILE...A MODEST LAPSE RATE ABOVE THE CAP
AND MUCH DRIER THIS MORNING ABOVE 700 MILLIBARS. WITH MIXING FROM
DAYTIME HEATING THEIR IS A BIT HIGHER THREAT FOR SMALL HAIL AND
ISOLATED STRONG DOWNBURST WINDS. DIRECTIONAL SHEAR HAS INCREASED
TODAY AS WIND SPEEDS HAVE INCREASED IN THE LOWER LEVELS ALSO
AIDING IN THE THREAT FOR STRONG TO SEVERE STORMS.

PREV DISCUSSION... /ISSUED 336 AM CDT SAT JUN 5 2010/

SHORT TERM...
WEAKENING UPPER LOW CURRENTLY OVER SW LOUISIANA WILL GRADUALLY SHEAR
OUT OVER THE NEXT 48 HOURS OR SO. AIRMASS REMAINS VERY MOIST AND
UNSTABLE. SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ON TAP
AGAIN TODAY...WITH AT LEAST SOME POTENTIAL FOR DOWNBURSTS WITH DRIER
AIR IN MID LEVELS. AS SYSTEM CONTINUES TO SHEAR OUT OVER OUR
AREA...AREAL COVERAGE SHOULD DIMINISH ON SUNDAY.

AS REMNANT OF SOUTHERN END OF THE TROF CLOSES OFF AGAIN NEAR
BROWNSVILLE TEXAS ON SUNDAY AND MONDAY...UPPER RIDGE OVER THE 4
CORNERS AREA WILL BUILD OVER THE LOW INTO OUR AREA. ANY CONVECTION
ON MONDAY IS EXPECTED TO BE RATHER ISOLATED.

TEMPERATURES TODAY SHOULD BE NEAR OR SLIGHTLY ABOVE THOSE SEEN MOST
AREAS ON FRIDAY. DRIER AIR AND LESS PRECIPITATION SHOULD ALLOW FOR
HIGHS A COUPLE OF DEGREES WARMER ON SUNDAY...WITH A COUPLE DEGREES
MORE ON MONDAY. THIS SHOULD PUT HIGHS INTO THE MID 90S IN MANY
AREAS. WITH DEW POINTS EXPECTED TO REMAIN IN THE MID 70S...THIS WILL
PRODUCE HEAT INDICES NEAR 105 DEGREES AS EARLY AS SUNDAY AFTERNOON.
WILL CONTINUE TO ADDRESS THIS IN THE HWO...AND STARTING
TOMORROW...MAY NEED TO ADDRESS THE ISSUE WITH HEAT ADVISORIES. 35

LONG TERM...
THE MAIN JETSTREAM WILL REMAIN WELL TO THE NORTH WHERE IT SHOULD
BE IN JUNE. NEARLY ZONAL FLOW TUESDAY AND WEDNESDAY WILL BUCKLE
THURSDAY AND FRIDAY WITH A MID/UPPER TROUGH EXPECTED OVER THE
WESTERN STATES WITH A RIDGE BUILDING OVER THE EASTERN STATES. OVER
THE CENTRAL GULF COAST AREA...HIGH PRESSURE AT BOTH THE SURFACE
AND ALOFT WILL DOMINATE AND KEEP SHOWERS AND THUNDERSTORMS LIMITED
TO ISOLATED AT BEST...AND MOSTLY DURING THE AFTERNOON HOURS. HEAT
AND HUMIDITY WILL CONTINUE TO BE A CONCERN WITH LATE MORNING AND
AFTERNOON HEAT INDICES AROUND 105 DEGREES THROUGH AT LEAST
THURSDAY. THE MID/UPPER RIDGE WILL BE WEAKENING AND SLOWLY MOVING
EAST LATE IN THE WEEK. THIS MAY ALLOW A SHORTWAVE TROUGH OR
WEAKNESS TO APPROACH FROM THE WEST FRIDAY OR NEXT SATURDAY AND
PROVIDE A SLIGHTLY BETTER CHANCE OF RAIN...AND SLIGHTLY LOWER
TEMPERATURES. 22/TD

AVIATION...
SCATTERED SHOWERS AND THUNDERSTORMS FROM NEAR KJAN TO KLFT EARLY
THIS MORNING...MAY AFFECT KBTR BEFORE 12Z TAF PACKAGE GETS
ISSUED.

SCT/BKN CLOUDS AROUND 1500-2000 FEET ARE PRODUCING MVFR CIGS THIS
MORNING. MAY SEE ISOLD IFR CIGS AND VSBYS AROUND SUNRISE. EXPECT
TSRA/SHRA TO DEVELOP BY 14Z-16Z AND HAVE THE POTENTIAL TO AFFECT ALL
TERMINALS THROUGH THE AFTERNOON HOURS. MOST PRECIPITATION SHOULD
DISSIPATE BY 01Z. SOME POTENTIAL SUNDAY MORNING FOR MVFR VSBYS AT
THE USUAL SUSPECTS...KMCB...KHUM. 35

MARINE...
THE SURFACE LOW THAT WAS OVER THE SABINE RIVER/TOLEDO BEND REGION
HAS BASICALLY FILLED IN BUT THE UPPER LEVEL DISTURBANCE IS STILL
OVER MUCH OF LA. THIS DISTURBANCE IS GOING TO BE SLOW TO OPEN UP
AND LIFT OUT AND WILL LEAD TO ANOTHER ACTIVE DAY TODAY ACROSS MUCH
OF THE LAND AREAS AND EVEN MARINE ZONES WEST OF THE RIVER BUT
THINGS MAY REMAIN A LITTLE MORE QUIET INITIALLY EAST OF THE RIVER.
BY EARLY THIS AFTERNOON SHRA AND TSRA WILL LIKELY BEGIN TO IMPACT
OPERATIONS EAST OF THE RIVER. ACTIVITY SHOULD ONCE AGAIN DISSIPATE
THIS EVENING WITH MOSTLY QUIET CONDITIONS TONIGHT. SUNDAY SHOULD
SEE MORE SCATTERED SHRA AND TSRA BUT OVERALL COVERAGE SHOULD BE
LIGHTER THAN TODAY. AS WE HEAD INTO NEXT WEEK THINGS WILL REALLY
BEGIN TO QUIET DOWN AS AN UPPER LEVEL RIDGE BUILDS OVER THE REGION
LEAVING THE COASTAL WATERS RATHER RAIN FREE. AS FOR WINDS IT
SHOULD BE ANOTHER BREEZY DAY TODAY. MODERATE ONSHORE FLOW WILL
CONTINUE AND SMALL CRAFT SHOULD EXERCISE CAUTION BUT OVERALL WINDS
WILL BE LIGHTER THAN YESTERDAY. SEAS WILL CONTINUE TO REMAIN
BETWEEN 2-4 FT TODAY AND LIKELY DROP TO 2-3 FT TOMORROW AND MORE
AROUND 2 FEET FOR MUCH OF NEXT WEEK. /CAB/

&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  88  71  93  74 /  70  20  30  10
BTR  89  74  95  76 /  70  30  40  10
ASD  90  75  93  76 /  70  30  40  10
MSY  90  76  92  78 /  70  30  40  10
GPT  87  76  91  77 /  70  30  50  10
PQL  87  75  91  76 /  70  30  50  10

&&

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

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1107 AM CDT SAT JUN 5 2010

GMZ530-532-534-536-538-550-552-555-557-570-572-575-577-LAZ034>040-
046>050-056>070-MSZ068>071-077-080>082-061615-
LAKE PONTCHARTRAIN AND LAKE MAUREPAS-MISSISSIPPI SOUND-
LAKE BORGNE-CHANDELEUR SOUND-BRETON SOUND-
COASTAL WATERS FROM THE PORT FOURCHON TO LOWER ATCHAFALAYA RIVER
OUT 20 NM-
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO PORT FOURCHON OUT 20 NM-
COASTAL WATERS FROM BOOTHVILLE LA TO THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER OUT 20 NM-
COASTAL WATERS FROM PASCAGOULA MS TO STAKE ISLAND LA OUT 20 NM-
COASTAL WATERS FROM THE PORT FOURCHON TO LOWER ATCHAFALAYA RIVER
FROM 20 TO 60 NM-
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO PORT FOURCHON FROM 20 TO 60 NM-
COASTAL WATERS FROM STAKE ISLAND LA TO THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER FROM 20 TO 60 NM-
COASTAL WATERS FROM PASCAGOULA MS TO STAKE ISLAND LA 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-
1107 AM CDT SAT JUN 5 2010

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS...
SCATTERED TO NUMEROUS THUNDERSTORMS ARE BEGINNING TO DEVELOP
AGAIN TODAY. ONE OR TWO ISOLATED STORMS COULD BE SEVERE WITH
DAMAGING WINDS. MOST STORMS WILL BE CAPABLE OF PRODUCING GUSTY
WINDS OF 40 TO 45 MPH...ALONG WITH FREQUENT LIGHTNING STRIKES AND
LOCALLY HEAVY RAINFALL. ISOLATED RAIN AMOUNTS OF 2 TO 4 INCHES
WILL BE POSSIBLE WITH THE STRONGEST STORMS.

MARINE HAZARDS...
SMALL CRAFT WILL NEED TO EXERCISE CAUTION TODAY ACROSS ALL COASTAL
AREAS...WITH SOUTHERLY WINDS OF 15 TO 20 KNOTS. IN ADDITION...SCATTERED
THUNDERSTORMS MAY PRODUCE LOCALLY STRONG WIND GUSTS OVER 34 KNOTS
AND VERY ROUGH SEAS.

RIVER FLOODING...
MINOR FLOODING OF THE MISSISSIPPI RIVER AT RED RIVER LANDING AND
THE ATCHAFALAYA RIVER AT MORGAN CITY WILL CONTINUE.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THUNDERSTORMS...
SCATTERED THUNDERSTORMS WILL BE POSSIBLE SUNDAY...WITH ISOLATED
STORMS THE REMAINDER OF THE WEEK...MAINLY DURING THE AFTERNOON
HOURS. WHILE ORGANIZED SEVERE WEATHER IS NOT EXPECTED...A FEW
STORMS COULD BE STRONG WITH WIND GUSTS OF 40 TO 45 MPH...FREQUENT
LIGHTNING AND LOCALLY HEAVY RAIN.

MARINE HAZARDS...
SCATTERED THUNDERSTORMS SUNDAY MAY PRODUCE LOCALLY STRONG WIND
GUSTS OVER 34 KNOTS AS WELL AS VERY ROUGH SEAS.

HEAT...
HIGH PRESSURE WILL BRING HOTTER WEATHER INTO THE AREA SUNDAY INTO
THE MIDDLE OF THE WEEK. ALONG WITH SLIGHTLY HIGHER HUMIDITY...THIS
WILL ALLOW HEAT INDICES TO NEAR 105 DEGREES WITH ISOLATED HIGHER
READINGS DURING THE HEAT OF THE AFTERNOON SUNDAY THROUGH THURSDAY.

RIVER FLOODING...
THE MISSISSIPPI RIVER AT RED RIVER LANDING IS FORECAST TO FALL
BELOW FLOOD STAGE ON TUESDAY. THE ATCHAFALAYA RIVER AT MORGAN CITY
WILL REMAIN ABOVE FLOOD STAGE THROUGH THE END OF NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1121 AM CDT SAT JUN 5 2010

LAZ038>040-049-050-057-058-MSZ071-051830-
TANGIPAHOA-WASHINGTON-ST. TAMMANY-ASCENSION-LIVINGSTON-ST. JAMES-
ST. JOHN THE BAPTIST-WALTHALL-
INCLUDING THE CITIES OF...HAMMOND...PONCHATOULA...BOGALUSA...
FRANKLINTON...SLIDELL...MANDEVILLE...COVINGTON...LACOMBE...
GONZALES...DONALDSONVILLE...DENHAM SPRINGS...WALKER...LUTCHER...
GRAMERCY...LAPLACE...RESERVE...TYLERTOWN
1121 AM CDT SAT JUN 5 2010

A LINE OF THUNDERSTORMS HAS DEVELOPED IN A SW-NE ORIENTATION FROM
AROUND ASCENSION TO WALTHALL PARISHES OVER THE LAST HOUR OR SO.
INDIVIDUALS CELL ARE CAPABLE OF PRODUCING HEAVY RAIN...LOCALLY
GUSTY WINDS...AND FREQUENT LIGHTNING.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1221 PM CDT SAT JUN 5 2010

LAZ034>040-047-048-050-MSZ069>071-051930-
POINTE COUPEE-WEST FELICIANA-EAST FELICIANA-ST. HELENA-TANGIPAHOA-
WASHINGTON-ST. TAMMANY-WEST BATON ROUGE-EAST BATON ROUGE-
LIVINGSTON-AMITE-PIKE-WALTHALL-
INCLUDING THE CITIES OF...NEW ROADS...LIVONIA...
ST. FRANCISVILLE...JACKSON...CLINTON...GREENSBURG...MONTPELIER...
HAMMOND...PONCHATOULA...BOGALUSA...FRANKLINTON...SLIDELL...
MANDEVILLE...COVINGTON...LACOMBE...PORT ALLEN...ADDIS...BRUSLY...
BATON ROUGE...DENHAM SPRINGS...WALKER...GLOSTER...LIBERTY...
CROSBY...MCCOMB...TYLERTOWN
1221 PM CDT SAT JUN 5 2010

SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOP THIS AFTERNOON FROM
POINT COUPEE PARISH TO WALTHALL COUNTY. SOME OF THESE
THUNDERSTORMS MAY BE STRONG WITH HEAVY RAIN...SMALL HAIL...GUSTY
WINDS...AND FREQUENT LIGHTNING.

LAZ036>038-048-051915-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
114 PM CDT SAT JUN 5 2010

...STRONG THUNDERSTORM MOVING NORTHEAST AFFECTING EAST FELICIANA
PARISH...TANGIPAHOA PARISH...EAST BATON ROUGE PARISH...ST. HELENA
PARISH...

AT 111 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 11 MILES SOUTH OF CLINTON...OR ABOUT OVER
PRIDE...MOVING NORTHEAST AT 25 MPH.

THE STRONG THUNDERSTORM WILL BE NEAR...
  DARLINGTON BY 150 PM...
  GREENSBURG BY 200 PM...
  EASLEYVILLE BY 205 PM...
  TANGIPAHOA AND 6 MILES SOUTHWEST OF KENTWOOD BY 215 PM...

THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING AND WIND
GUSTS 40 TO 50 MPH...WHICH COULD DOWN TREE LIMBS AND BLOW AROUND
UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING
UNTIL THIS STORM HAS PASSED.

THIS STORM COULD PRODUCE RAINFALL AMOUNTS OF ONE TO TWO INCHES IN A
SHORT PERIOD OF TIME...RESULTING IN PONDING OF WATER AROUND LOW LYING
ROADWAYS. REMEMBER...DO NOT DRIVE YOUR VEHICLE INTO WATER COVERED
ROADWAYS. THE DEPTH MAY BE TOO GREAT TO ALLOW A SAFE CROSSING.

24/RR

LAZ038>040-052015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
242 PM CDT SAT JUN 5 2010

...CLUSTER OF STRONG THUNDERSTORMS MOVING NORTHEAST AFFECTING
WASHINGTON PARISH...TANGIPAHOA PARISH...ST. TAMMANY PARISH...

AT 239 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS 9 MILES NORTHWEST OF COVINGTON...OR
ABOUT 4 MILES SOUTH OF FOLSOM...MOVING NORTHEAST AT 25 MPH.

THE CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND
AROUND...FOLSOM...ENON AND FRANKLINTON

THE PRIMARY THREATS FROM THESE STORMS ARE FREQUENT LIGHTNING...SUB
SEVERE HAIL UP TO NICKEL SIZE...AND WIND GUSTS TO NEAR 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.

THESE STORMS COULD PRODUCE RAINFALL AMOUNTS OF ONE TO TWO INCHES IN A
SHORT PERIOD OF TIME...RESULTING IN PONDING OF WATER AROUND LOW LYING
ROADWAYS. REMEMBER...DO NOT DRIVE YOUR VEHICLE INTO WATER COVERED
ROADWAYS. THE DEPTH MAY BE TOO GREAT TO ALLOW A SAFE CROSSING.