Severe Thunderstorm Warning 161, NWS New Orleans, LA

489 
WWUS54 KLIX 050042
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
742 PM CDT TUE SEP 4 2012

MSC045-047-109-050100-
/O.CON.KLIX.SV.W.0161.000000T0000Z-120905T0100Z/
PEARL RIVER MS-HANCOCK MS-HARRISON MS-
742 PM CDT TUE SEP 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR WESTERN HARRISON...NORTHERN HANCOCK AND SOUTHEASTERN PEARL RIVER
COUNTIES...

AT 739 PM CDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED
16 MILES EAST OF MCNEIL...OR 15 MILES SOUTHEAST OF POPLARVILLE...
MOVING SOUTH AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
PICAYUNE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE FOLLOW OUR OFFICE ON BOTH FACEBOOK AND TWITTER FOR MORE
INFORMATION ON SEVERE WEATHER AND TO RELAY WEATHER REPORTS AND
PHOTOS.

&&

LAT...LON 3095 8934 3066 8934 3065 8925 3067 8924
      3069 8923 3068 8916 3068 8915 3036 8920
      3054 8977 3097 8938
TIME...MOT...LOC 0043Z 022DEG 22KT 3065 8937

$$

337 
WWUS54 KLIX 050058
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
758 PM CDT TUE SEP 4 2012

MSC045-047-109-050108-
/O.EXP.KLIX.SV.W.0161.000000T0000Z-120905T0100Z/
PEARL RIVER MS-HANCOCK MS-HARRISON MS-
758 PM CDT TUE SEP 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN HARRISON...NORTHERN
HANCOCK AND SOUTHEASTERN PEARL RIVER COUNTIES WILL EXPIRE AT 800 PM
CDT...

THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE 
LIMITS.

LAT...LON 3095 8934 3066 8934 3065 8925 3067 8924
      3069 8923 3068 8916 3068 8915 3036 8920
      3054 8977 3097 8938
TIME...MOT...LOC 0058Z 022DEG 22KT 3056 8941

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
327 PM CDT TUE SEP 4 2012

.SHORT TERM...
TWO MAIN PROBLEMS IN THE SHORT TERM...HEAT AND RAIN. CONCERNING
HEAT...OVERNIGHT LOWS NOT FORECAST TO DROP MUCH BELOW 80 IN MANY
PLACES AND SEVERAL AREAS STILL EXPERIENCING POWER OUTAGES. WITH NO
AIR CONDITIONING TO PROVIDE RELIEF FROM THE HEAT...IT WILL BE
EASIER FOR PEOPLE TO BE OVERCOME BY HEAT RELATED ILLNESSES.
CONDITIONS ARE BORDERLINE FOR LOCAL HEAT ADVISORY CRITERIA...BUT
GIVEN THE NUMBER OF PEOPLE STILL EXPERIENCING POWER OUTAGES...WILL
CONTINUE TO CARRY THE HEAT ADVISORY THROUGH TOMORROW.

CONCERNING THE RAIN...A LARGE AREA OF CONVECTION OVER SOUTHERN
ALABAMA AND THE FLORIDA PANHANDLE IS EXPECTED TO PRODUCE OUTFLOW
BOUNDARIES THAT WILL MOVE THROUGH PORTIONS OF THE ARE THIS EVENING
AND TONIGHT...WITH CONVECTION DEVELOPING ALONG THE BOUNDARIES.
GIVEN THE SATURATED GROUND CONDITIONS AND THE ALREADY ELEVATED
RIVER LEVELS ACROSS THE AREA...HAVE ISSUED A FLASH FLOOD WATCH
THROUGH TONIGHT FOR THE MISSISSIPPI COASTAL COUNTIES AND PEARL
RIVER COUNTY. WILL NEED TO MONITOR THE CONVECTION FOR WESTWARD
PROGRESSION AND AND MAY NEED TO EXPAND THE WATCH TO OTHER WATER
LOGGED AREAS IF IT MOVES FARTHER INTO THE LOCAL AREA THAN
CURRENTLY FORECAST.

.LONG TERM...
EXPECT WARM AND HUMID CONDITIONS TO PERSIST THROUGH THE REMAINDER
OF THE WORK WEEK.

A COLD FRONT IS FORECAST TO MOVE THROUGH THE AREA SATURDAY NIGHT
OR SUNDAY. THE GFS IS A BIT STRONGER IN ITS DEPICTION OF THE FRONT THAN
THE ECMWF...BUT BOTH SHOW A STRONG SURGE OF COOLER AND DRIER AIR.
THE GFS FORCES THE FRONT NEARLY ALL THE WAY TO KEY WEST...WHILE
THE ECMWF STALLS IT OVER THE CENTRAL GULF. EVEN IF THE GFS IS A
BIT TOO STRONG...LOOKS LIKE WE SHOULD SEE A DECENT FRONTAL PASSAGE
WITH AFTERNOON HIGHS TOPPING OUT IN THE MID 80S AND OVERNIGHT LOWS
IN THE LOW 60S ACROSS A LARGE PORTION OF THE AREA.

&&

.AVIATION...
VFR CONDITIONS WILL PREVAIL THROUGH NEXT 24 HOURS. TEMPO GROUPS
INCLUDED AT ASD AND GPT FOR CONVECTION THAT MAY DEVELOP LATER THIS
EVENING.

&&

.MARINE...
OVERALL THINGS WILL REMAIN MOSTLY QUIET THROUGH THE REMAINDER OF
THE WORK WEEK. WINDS WILL RANGE FROM 10-15 KTS OVER THE GULF
WATERS OUT OF THE SW FOR THE NEXT 48 HRS AND COULD EVEN PICK UP TO
15-20KTS EAST OF THE DELTA DURING THE EVNG AND OVERNIGHT HRS.
BIGGEST CHANGE WILL COME LATE THIS WEEK AND ESPECIALLY THIS
WEEKEND. A WEAK SFC TROUGH WILL SET UP OVER THE NERN GULF COAST
AND ACROSS THE SERN CONUS AND THIS SHOULD INITIALLY GET WINDS TO
VEER AROUND TO ERLY AND POSSIBLY OFFSHORE BUT THIS IS JUST THE
BEGINNING. HADING INTO SAT NIGHT A STRONG COLD FRONT IS EXPECTED
TO DROP INTO THE GULF AND WINDS STRONG OFFSHORE WINDS WILL DEVELOP
BEHIND IT SUN MORNING. SCY WILL LIKELY BE NEEDED.

&&

DECISION SUPPORT...
DSS CODE...RED.
DEPLOYED...ER-MET TO GOHSEP, ER-MET TO SLIDELL.
ACTIVATION...OZONE AMATEUR RADIO NETWORK AT MOBILE COMMAND.
ACTIVITIES...RIVER AND RESIDUAL SURGE FLOOD FIGHT SUPPORT.

DECISION SUPPORT SERVICES (DSS) CODE LEGEND
GREEN  = NO WEATHER IMPACTS THAT REQUIRE ACTION
BLUE   = LONG FUSED WATCH/WARNING/ADVISORY IN EFFECT OR HIGH
         VISIBILITY EVENT
YELLOW = HEIGHTENED IMPACTS WITH SHORT FUSED
         WATCH/WARNING/ADVISORY ISSUANCES; RADAR SUPPORT
ORANGE = HIGH IMPACTS - SLIGHT TO MODERATE RISK SEVERE; NEARBY
         TROPICAL EVENTS; HAZMAT OR OTHER LARGE EPISODES
RED    = FULL ENGAGEMENT FOR MODERATE TO HIGH RISK SVR AND/OR
         DIRECT TROPICAL THREATS; EVENTS OF NATIONAL SIGNIFICANCE

&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  75  94  75  96 /  10  10  20  20
BTR  76  95  77  96 /  10  10  20  20
ASD  76  93  76  94 /  40  30  30  30
MSY  79  92  78  93 /  30  30  30  30
GPT  77  93  76  94 /  40  50  30  30
PQL  74  93  73  94 /  50  50  30  30

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...HEAT ADVISORY UNTIL 7 PM WEDNESDAY FOR THE FOLLOWING ZONES:
     LOWER JEFFERSON...LOWER LAFOURCHE...LOWER
     PLAQUEMINES...LOWER ST. BERNARD...ORLEANS...ST.
     CHARLES...ST. JAMES...ST. JOHN THE BAPTIST...UPPER
     JEFFERSON...UPPER LAFOURCHE...UPPER PLAQUEMINES...AND UPPER
     ST. BERNARD.

GM...NONE.
MS...FLASH FLOOD WATCH UNTIL 7 AM WEDNESDAY FOR THE FOLLOWING ZONES:
     HANCOCK...HARRISON...JACKSON...AND PEARL RIVER.

GM...NONE.
&&

MARINE...CAB
REST OF DISCUSSION...95/DM

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
702 PM CDT TUE SEP 4 2012

GMZ530-532-534-536-538-550-552-555-557-570-572-575-577-LAZ034>037-
039-040-046>050-056>072-MSZ068>071-077-080>082-060015-
LAKE PONTCHARTRAIN AND LAKE MAUREPAS-MISSISSIPPI SOUND-
LAKE BORGNE-CHANDELEUR SOUND-BRETON SOUND-
COASTAL WATERS FROM 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 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-
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-NORTHERN TANGIPAHOA-
SOUTHERN TANGIPAHOA-WILKINSON-AMITE-PIKE-WALTHALL-PEARL RIVER-
HANCOCK-HARRISON-JACKSON-
702 PM CDT TUE SEP 4 2012

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

.DAY ONE...TONIGHT

SEVERAL RIVERS IN SOUTHEAST LOUISIANA AND COASTAL MISSISSIPPI
REMAIN IN FLOOD. MONITOR THE LATEST FLOOD STATEMENTS AND RIVER
FORECASTS FOR UPDATED INFORMATION.

A HEAT ADVISORY IS IN EFFECT THROUGH WEDNESDAY AFTERNOON FOR THE
PARISHES GENERALLY SOUTH OF THE TIDAL LAKES INCLUDING THE NEW
ORLEANS METRO AREA AND THE RIVER PARISHES. HIGH HEAT AND HUMIDITY
WILL BE COMPOUNDED BY INADEQUATE CLIMATE CONTROL DUE TO POWER
OUTAGES.

THERE IS A CHANCE OF THUNDERSTORMS THIS EVENING AND EARLY NIGHT MAINLY
OVER SOUTHEAST AND COASTAL MISSISSIPPI. SOME OF THE STORMS MAY
BECOME STRONG TO SEVERE WITH DAMAGING WINDS...FREQUENT LIGHTNING
AND BRIEF TORRENTIAL RAINFALL THROUGH THIS EVENING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

EXPECT SCATTERED SHOWERS AND THUNDERSTORMS THROUGH FRIDAY...
MAINLY DURING THE AFTERNOON EACH DAY. FREQUENT LIGHTNING AND
HEAVY DOWNPOURS ARE POSSIBLE WITH THESE STORMS. HEAT INDEX VALUES
WILL CONTINUE TO RANGE IN THE 100 TO 106 DEGREE RANGE... POSSIBLY
HIGHER IN SOME LOCATIONS AND CONTINUE TO HAVE A GREATER IMPACT ON
PEOPLE WHO STILL DO NOT HAVE POWER.

A STRONG COLD FRONT IS EXPECTED TO PUSH THROUGH THE AREA SATURDAY
AND SUNDAY. SCATTERED THUNDERSTORMS ARE EXPECTED TO FORM AHEAD OF
THE FRONT AND A FEW OF THOSE STORMS MAY BE STRONG WITH GUSTY
WINDS SATURDAY NIGHT AND SUNDAY.

SEVERAL RIVERS IN SOUTHEAST LOUISIANA AND COASTAL MISSISSIPPI
REMAIN IN FLOOD. MONITOR THE LATEST FLOOD STATEMENTS AND RIVER
FORECASTS FOR UPDATED INFORMATION.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION NOT NEEDED AT THIS TIME.

MSZ081-082-042345-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
606 PM CDT TUE SEP 4 2012

...CLUSTER OF STRONG THUNDERSTORMS MOVING SOUTH AFFECTING JACKSON
COUNTY...HARRISON COUNTY...

AT 604 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS 18 MILES SOUTHEAST OF WIGGINS...OR
ABOUT 18 MILES NORTH OF ST. MARTIN...MOVING SOUTH AT 25 MPH.

THE CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND
AROUND...ST. MARTIN...GULFPORT AIRPORT...OCEAN SPRINGS...GULFPORT AND
BILOXI.

THE PRIMARY THREATS FROM THESE STORMS ARE FREQUENT LIGHTNING 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.

MSZ081-082-050015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
646 PM CDT TUE SEP 4 2012

...LINE OF STRONG THUNDERSTORMS MOVING SOUTHEAST AFFECTING JACKSON
COUNTY...HARRISON COUNTY...

AT 644 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS FROM 10 MILES NORTH OF GULFPORT TO 11
MILES NORTHEAST OF ESCATAWPA...MOVING SOUTHEAST AT 25 MPH.

THE LINE OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND...
ST. MARTIN...LONG BEACH...GULFPORT AIRPORT...OCEAN SPRINGS...
GAUTIER...BILOXI...GULF PARK ESTATES...MOSS POINT AND PASCAGOULA

THE PRIMARY THREATS FROM THESE STORMS ARE FREQUENT LIGHTNING 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.

MSZ077-050100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
710 PM CDT TUE SEP 4 2012

...STRONG THUNDERSTORM MOVING SOUTHWEST AFFECTING PEARL RIVER
COUNTY...

AT 709 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 11 MILES EAST OF POPLARVILLE...MOVING SOUTHWEST
AT 20 MPH.

THE STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND...POPLARVILLE

THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING 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 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.