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Next 12 Hours

Forecast data from the National Digital Forecast Database.

5 Day Forecast

• Sunday
• 
• High: 88 °
• Low: 72 °
• Partly Cloudy

• Monday
• 
• High: 86 °
• Low: 72 °
• Partly Cloudy

• Tuesday
• 
• High: 86 °
• Low: 70 °
• Partly Cloudy

• Wednesday
• 
• High: 82 °
• Low: 68 °
• Chance of T-Storms

• Thursday
• 
• High: 84 °
• Low: 70 °
• Chance of T-Storms

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
249 PM CDT SUN MAY 19 2013

.SHORT TERM...
NOT EXPECTING MUCH IN THE WAY OF CHANGES TO CURRENT CONDITIONS 
THROUGH THE NEXT COUPLE DAYS. CURRENT UPPER LEVEL PATTERN SHOWS 
RIDGE OVER THE EASTERN THIRD OF THE COUNTRY AND TROUGH OVER THE REST 
TO THE WEST. NEAR NORMAL HIGHS WILL PERSIST UNDER THESE CONDITIONS 
WITH LITTLE CHANCE OF RAIN...IF ANY. COMBINATION OF PERSISTENT 
SOUTHEASTERLY FLOW KEEPING LLVL MOISTURE INCREASED AND DEVELOPMENT OF 
CLOUDS OVERNIGHT WILL RESULTS IN CONTINUED WARM LOWS. CLOUDS TO 
CLEAR UP SOMEWHAT BY THE AFTERNOON BUT NO WEATHER IMPACTS EXPECTED 
AT THIS TIME. 

.LONG TERM...
UPPER LEVEL TROUGH WILL BE GRADUALLY PROGRESSING EASTWARD THIS WEEK. 
RIDGE WILL FINALLY BE PUSHED EAST BY WEDNESDAY. BY ESTABLISHING 
SOUTHWESTERLY FLOW THROUGHOUT THE COLUMN...PRECIP WATER VALUES WILL 
RISE AND BEGIN TO ALLOW INSTABILITY TO BE REALIZED. HAVE MAINTAINED 
SLIGHT CHANCE POPS ON WEDNESDAY. SIMILAR CONDITIONS ARE EXPECTED ON 
THURSDAY THOUGH MAY SEEM MORE LIKE A TYPICAL SUMMER DAY WITH 
CONVECTION MOVING LITTLE TO POSSIBLY SOUTH. MODELS SHOWING A WEAK 
FRONTAL BOUNDARY TO BE PUSHING THROUGH FRIDAY NIGHT. THIS SHOULD 
BRING IN ENOUGH DRY AIR TO DIMINISH THE THUNDERSTORM THREAT SOMEWHAT 
BUT MIGHT NOT BE COMPLETELY. IT APPEARS THAT ACTIVITY WILL REMAIN ON 
THE SOUTHERN HALF OF THE CWA BEYOND THAT AS UPPER LEVEL RIDGE BEGINS 
TO BUILD TO THE NORTHEAST OF THE AREA.

MEFFER
&&

.MARINE...
HIGH PRESSURE CENTERED IN THE WESTERN ATLANTIC EXTENDS INTO THE GULF 
OF MEXICO. IT WILL REMAIN IN PLACE OVER THE COASTAL WATERS IN THAT 
FASHION THROUGH TUESDAY WHICH WILL KEEP WINDS SOUTHEASTERLY AT 10 TO 
15 KNOTS. SEAS THRU THAT PERIOD TO BE MAINLY IN THE 2 TO 3 FOOT 
RANGE. UPPER LEVEL TROUGH WILL DIG ACROSS THE EASTERN HALF BEGINNING 
MID WEEK. THIS WILL BREAK DOWN RIDGE OVER THE GULF COAST AND CAUSE 
THE WIND FIELD TO BREAKDOWN. A WEAK FRONTAL BOUNDARY WILL PASS 
THROUGH AT THE END OF THIS WEEK. ONLY EXPECTING A WIND  SHIFT AT 
THIS POINT. ONSHORE FLOW TO RETURN BEYOND THE WEEKEND.  

&&

.AVIATION...
GENERALLY VFR CONDITIONS TO PREVAIL THROUGH THE REMAINDER OF THE DAY 
WITH SOUTH WINDS IN THE 10 TO 15 KT RANGE. AFTER SUNSET...EXPECT 
WINDS TO CALM A BIT. LOW CIGS WILL ONCE AGAIN IMPACT THE TERMINALS 
TONIGHT WITH MVFR OR IFR CIGS EXPECTED GENERALLY AFTER 06Z. 
CONDITIONS WILL IMPROVE AFTER SUNRISE...BUT MVFR CIGS MAY STICK 
AROUND THROUGH THE LATE MORNING OR EARLY AFTERNOON.

&&

.DECISION SUPPORT...

DSS CODE...YELLOW. 
DEPLOYED...NONE. 
ACTIVATION...NONE.
ACTIVITIES...SLURRY SUPPORT
             MONITORING RIVERS
             SEVERE THUNDERSTORM WATCH IN EFFECT
                                                         
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  70  88  68  87 /   0  10  10  10 
BTR  71  89  71  89 /   0  10  10  10 
ASD  71  87  69  86 /   0  10  10  10 
MSY  72  87  71  87 /   0  10  10  10 
GPT  73  84  69  84 /   0  10  10  10 
PQL  69  85  68  86 /   0  10  10  10 

&&

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

$$