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New Orleans Local Weather thread - dkmac - 01-12-2009 06:51 AM

000
fxus64 klix 120939
afdlix

area forecast discussion
national weather service new orleans la
339 am cst mon jan 12 2009

.discussion...
Temperatures will be the main forecast concern through the weekend.
An amplified upper air pattern will prevail over the u.s. During
the forecast period with a mean upper trough over the central and
eastern conus and a mean upper ridge along the west coast. A couple of
alberta clipper type systems will bring surges of cold air south
into the eastern half of the country during the work week. One
shot of cold air will move into the local forecast area early
tuesday with the next shot on thursday. Freezing temperatures are
expected the next few nights...even across sections of the south
shore on some nights...with the coldest nights being tuesday
night...thursday night and friday night. Freeze warnings will
likely be required in some areas of the south shore on the coldest
nights...while freeze warnings will also need to be considered
for the north shore and south mississippi given the recent and
extended warm spell which has caused some vegetation to begin to
bud out.

Temperatures will moderate somewhat over the weekend with another
system expected to affect the forecast area sunday...although
timing differences exist with the models at this time. By this
time...however...the mean upper trough and coldest air will have
shifted to the east of the area.

&&

.aviation...
Vfr conditions expected through tonight. 17

&&

.marine...
Northeast winds of 20 to 25 knots will lay this morning to around 15
knots allowing small craft advisories to be taken down. Another cold
front will increase winds once again tuesday. Small craft advisories
may be possible again tuesday and tuesday night but wind speeds will
be on the low end of the criteria. Another ridge will then build on
the back of a deep northwest flow aloft for wednesday...once again
allowing winds to weaken and turn more southerly. However...in this
progressive pattern...a third front will then plunge into the gulf
of mexico on thursday...allowing for a third round of small craft
advisories with wind speeds coming in the upper range of criteria
for the end of the week. 17


New Orleans Local Weather thread - ROLLTIDE - 01-12-2009 08:21 AM

Special Weather Statement

SPECIAL WEATHER STATEMENTNATIONAL WEATHER SERVICE NEW ORLEANS LA410 AM CST MON JAN 12 2009LAZ034>040-046>050-056>070-MSZ068>071-077-080>082-122200-AMITE-ASCENSION-ASSUMPTION-EAST BATON ROUGE-EAST FELICIANA-HAN****-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-410 AM CST MON JAN 12 2009...FREEZING TEMPERATURES RETURN TO SOUTHERN MISSISSIPPI ANDSOUTHEAST LOUISIANA THIS WEEK...A BRIEF LIGHT FREEZE IS EXPECTED AGAIN TONIGHT AND EARLY TUESDAYMORNING ACROSS INLAND SOUTH MISSISSIPPI AND PORTIONS OF THE UPPERFLORIDA PARISHES IN LOUISIANA. DUE TO THE UNSEASONABLY MILD TO WARMWEATHER SINCE BEFORE CHRISTMAS...SOME VEGETATION HAS OPENED ANDGREENED UP PREMATURELY. TAKE PRECAUTIONS TO PROTECT ANY SENSITIVEPLANTS AND VEGETATION AS THERE WILL BE ADDITIONAL COLD NIGHTS THISWEEK.STRONG COLD FRONTS...AND ASSOCIATED SURGES OF COLD AIR WITH CANADIANAND ARCTIC HIGH PRESSURE...ARE EXPECTED TUESDAY AND AGAIN THURSDAY.SUBSTANTIAL PERIODS OF FREEZING TEMPERATURES WILL BE POSSIBLE OVERSOUTHERN MISSISSIPPI...AND NORTH AND WEST OF LAKE PONTCHARTRAIN INEAST CENTRAL AND SOUTHEAST LOUISIANA EACH NIGHT TUESDAY THROUGHSATURDAY. A LIGHT FREEZE WILL BE POSSIBLE OVER AREAS SOUTH OF LAKEPONTCHARTRAIN INCLUDING INLAND SECTIONS OF THE COASTAL PARISHESTUESDAY NIGHT AND AGAIN THURSDAY AND FRIDAY NIGHTS. A HARD FREEZE ISPOSSIBLE THURSDAY NIGHT AND FRIDAY NIGHT OVER THE FLORIDA PARISHESOF SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI.STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISIONSTATIONS...OR YOUR CABLE TELEVISION PROVIDER FOR THE LATEST ON THISFREEZE SITUATION


New Orleans Local Weather thread - ROLLTIDE - 01-12-2009 09:02 PM

FXUS64 KLIX 122138
AFDLIX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
338 PM CST MON JAN 12 2009

.DISCUSSION...
ARCTIC AIRMASSES DROPPING OUT OF THE HIGH PLAINS AND CANADA WILL
BE THE MAIN WEATHER CONCERNS THIS WEEK AS THE FIRST SURGE MOVES
INTO THE REGION DURING THE DAY TUESDAY AND BECOMING RE-ENFORCED BY
A MUCH STRONGER SURGE THURSDAY. THESE WILL BE THE COLDEST AIR OF
THE WINTER SEASON THUSFAR AND PERHAPS THE COLDEST SINCE DECEMBER
2006...BASED ON A QUICK REVIEW OF RECENT PAST COLD EVENTS. A
PATCHY LIGHT FREEZE AND FROST IS POSSIBLE TONIGHT WELL AWAY FROM
COASTAL AND TIDAL LAKES BUT MUCH OF THE AREA SHOULD BE AFFECTED BY
AT LEAST A LIGHT FREEZE TUESDAY NIGHT AND WEDNESDAY NIGHT BEFORE
BECOMING VERY COLD THURSDAY NIGHT. WILL BE TRYING TO HEIGHTEN THIS
EVENT WITH A SPECIAL WEATHER STATEMENT FOR VERY COLD TEMPERATURES.
NO PRECIPITATION IS EXPECTED DURING THE COLD SPELL THROUGH
SATURDAY THOUGH THINGS COULD GET MARGINALLY INTERESTING SUNDAY. 24

&&

.AVIATION...
VFR CONDITIONS EXPECTED THROUGH TUESDAY. TIME HEIGHT PLOTS AND
ISENTROPIC LIFT CHARTS BETWEEN 285K AND 300K INDICATE NO SATURATION
OF ANY LAYERS BELOW 10K FEET THROUGH 18Z TUESDAY. A FEW COLD AIR
STRATOCUMULUS CLOUDS MAY BE POSSIBLE BEHIND THE FRONT BETWEEN 18Z
TUESDAY AND 00Z WEDNESDAY...BUT AT THIS TIME WIDESPREAD MVFR
CEILINGS NOT EXPECTED. FRONTAL PASSAGE SHORTLY AFTER SUNRISE ON
TUESDAY. 35
&&


New Orleans Local Weather thread - dkmac - 01-13-2009 06:22 AM

000
fxus64 klix 130932
afdlix

area forecast discussion
national weather service new orleans la
332 am cst tue jan 13 2009

.discussion...
Temperatures continue be the main forecast concern through the weekend.
An amplified upper air pattern will prevail across the u.s. During
the forecast period with a mean upper trough over the central and
eastern conus and a mean upper ridge along the west coast. Arctic
air masses will plunge south into the eastern half of the country
during the work week in the wake of a couple of alberta clipper
type systems. The first surge of cold air was pushing south
across the plains and mississippi valley early this morning and
will make itself felt across the local forecast area today and
tonight. Temperatures today will only be in the 50s again...and
may actually struggle to make it above 50 across the northern zones
in southwest mississippi as strong cold air advection sets in. A
light freeze is expected tonight across southwest and coastal
mississippi and those areas of southeast louisiana to the north...
West and southwest of lake pontchartrain. In accordance with local
policy...a freeze warning will be issued for tonight and wednesday
morning for those areas south of a donaldsonville to lake pontchartrain
line where freezing temperatures are expected. This freeze warning will
include assumption...st. James...st. John the baptist...st. Charles...
Upper lafourche...and upper terrebonne parishes.

A colder air mass will plunge south into the area thursday with a
hard freeze expected thursday night across south mississippi and
the areas of southeast louisiana to the north and northwest of
lake pontchartrain...while a light freeze is expected across much
of the south shore including the new orleans metro area. Another
significant freeze is expected friday night with a moderate to
light freeze across south mississippi and areas of southeast
louisiana to the north and northwest of lake pontchartrain...with
a light freeze possible across much of the south shore.

Temperatures will moderate somewhat over the weekend and there
will be a chance for rain saturday night into sunday morning as a
short wave moving through the mean eastern trough and an
associated cold front approaches and moves through the area.
Temperatures behind this front will not be as cold as heights
begin to rise as the upper air pattern becomes more progressive
with the eastern trough moving eastward while the western conus
ridge shifts into the central u.s early next week.

&&

.aviation...
Vfr conditions expected through tonight. Some temporary bkn120 will
move over terminals later this morning as a cold front moves
through. Skies will clear once again behind and winds will increase
to around 15 knots by afternoon. Ceilings of bkn180 will continue
over the north central gulf today. 17

&&

.marine...
As the second of several cold fronts spill into the gulf...winds and
seas will quickly move up and down through the forecast. Have started
the exercise caution headline with the 0930z issuance and will start
the small craft advisory by noon. Winds will be close to lower end
criteria but frequent gusts will be enough to promote advisories for
the area. This gradient will quickly release by late tonight causing
winds and seas to subside again through wed. Another cold front is due
in thu morning. This will be the stronger of the two bringing
northerly winds and some cold temps to all coastal waters thu
through fri and advisories will likely be hoisted again. 17


New Orleans Local Weather thread - ROLLTIDE - 01-13-2009 09:37 AM

Freeze Warning

URGENT - WEATHER MESSAGENATIONAL WEATHER SERVICE NEW ORLEANS LA409 AM CST TUE JAN 13 2009...FREEZE WARNING IN EFFECT TONIGHT AND WEDNESDAY MORNING FORAREAS OF SOUTHEAST LOUISIANA TO THE SOUTHWEST OF LAKE PONTCHARTRAIN....A VERY COLD AIR MASS MOVING SOUTH INTO SOUTHEAST LOUISIANA TODAYAND TONIGHT WILL RESULT IN A LIGHT FREEZE TONIGHT AND WEDNESDAYMORNING ACROSS ASSUMPTION...ST. JAMES...ST. JOHN THE BAPTIST...ST. CHARLES...UPPER LAFOURCHE...AND UPPER TERREBONNE PARISHES.LAZ056>060-065-132230-/O.NEW.KLIX.FZ.W.0001.090114T0600Z-090114T1400Z/ASSUMPTION-ST. JAMES-ST. JOHN THE BAPTIST-UPPER LAFOURCHE-ST. CHARLES-UPPER TERREBONNE-INCLUDING THE CITIES OF...PIERRE PART...LABADIEVILLE...PAINCOURTVILLE...LUTCHER...GRAMERCY...LAPLACE...RESERVE...​THIBODAUX...RACELAND...LAROSE...DESTREHAN...NORCO...HOUMA...BAYOU CANE409 AM CST TUE JAN 13 2009...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CSTWEDNESDAY...THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A FREEZEWARNING...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CSTWEDNESDAY. THIS FREEZE WARNING IS IN EFFECT FOR ASSUMPTION...ST.JAMES... ST. JOHN THE BAPTIST...ST. CHARLES...UPPER LAFOURCHE...AND UPPER TERREBONNE PARISHES.A VERY COLD AIR MASS PUSHING SOUTH INTO LOUISIANA TODAY AND TONIGHTWILL RESULT IN A LIGHT FREEZE LATE TONIGHT AND WEDNESDAY MORNING.TEMPERATURES ARE EXPECTED TO FALL INTO THE LOWER 30S FOR A PERIODOF 4 TO 6 HOURS.A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT ORHIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHERSENSITIVE VEGETATION. PRECAUTIONS SHOULD BE TAKEN TO PROTECT ANYSENSITIVE PLANTS AND VEGETATION


New Orleans Local Weather thread - ROLLTIDE - 01-13-2009 10:56 AM

Urgent - weather message
national weather service new orleans la
409 am cst tue jan 13 2009

..freeze warning in effect tonight and wednesday morning for
areas of southeast louisiana to the southwest of lake pontchartrain...

A very cold air mass moving south into southeast louisiana today
and tonight will result in a light freeze tonight and wednesday
morning across assumption...st. James...st. John the baptist...
St. Charles...upper lafourche...and upper terrebonne parishes.
..freeze warning in effect from midnight tonight to 8 am cst
wednesday...

The national weather service in new orleans has issued a freeze
warning...which is in effect from midnight tonight to 8 am cst
wednesday. This freeze warning is in effect for assumption...st.
James... St. John the baptist...st. Charles...upper lafourche...
And upper terrebonne parishes.

A very cold air mass pushing south into louisiana today and tonight
will result in a light freeze late tonight and wednesday morning.
Temperatures are expected to fall into the lower 30s for a period
of 4 to 6 hours.

A freeze warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation. Precautions should be taken to protect any
sensitive plants and vegetation


New Orleans Local Weather thread - ROLLTIDE - 01-13-2009 05:21 PM

AFDLIX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
342 PM CST TUE JAN 13 2009

.SHORT TERM...
LATEST SURFACE ANALYSIS DISPLAYED A SURFACE LOW JUST NORTH OF NEW
YORK WITH AN ASSOCIATED FRONTAL BOUNDARY SOUTH-SOUTHWEST TO THE
FLORIDA PANHANDLE TO THE CENTRAL GULF. IN ADDITION...NORTHWEST
WINDS WERE NOTED OVER THE LOWER MISSISSIPPI VALLEY WITH AN ELONGATED 1032MB
HIGH OVER OKLAHOMA AND TEXAS. A DEEP TROUGH/LOW WAS NOTED OVER THE
NORTHERN PLAINS. A LITTLE NOTE FOR LATER THIS WEEK...20Z TEMPS OF
-25 TO -35F WERE LOCATED OVER NORTHERN ALBERTA AND NORTHERN
SASKATCHEWAN. UPPER LEVEL ANALYSIS REVEALED A TROUGH AXIS FROM THE
HUDSON BAY TO THE NORTHERN GULF...JUST EAST OF THE MISSISSIPPI
VALLEY...AND A LARGE ANTI-CYCLONIC CIRCULATION WAS LOCATED JUST
WEST OF BAJA CALIFORNIA TO NORTHERN PACIFIC OCEAN. ERGO...THIS
SYNOPTIC PATTERN ALLOWS COLD AIRMASS TO DIVE SOUTH WELL SOUTH OF
35N. MEANWHILE...THE SURFACE HIGH OVER TEXAS WILL DRIFT EAST OVER
THE DEEP SOUTH. BY COMPARISON...THICKNESS LAYERS FROM 1000 TO
700MB WAS AROUND 2980M...ACCORDING TO GFS AND ECMWF INITIAL VALUES
AT 12Z THIS MORNING. WITH THE SHORT WAVE PASSING THROUGH
TODAY...THICKNESS VALUES ARE EXPECTED TO DROP DOWN TO 2850M BY 06Z
WED AND SLIGHTLY REBOUNDING AFTER MIDNIGHT. WE INHERITED VERY GOOD
TEMPS AND WILL MAINTAIN FREEZE WARNING FOR THE RIVER PARISH. THE
LAST INSTALLMENT OF COLD AIR HAS FINALLY ENTER DAKOTAS...WELL THE
EMBEDDED SHORT WAVE. HOWEVER...THE COLDEST AIR REMAINS WELL NORTH.
TAPPING OF THIS COLD WILL OCCUR BUT HOW FAR SOUTH. BOTH GFS AND
ECMWF CONTINUE TO THE LAST SHORT WAVE DIVE SOUTHEAST ACROSS THE
PLAINS WEDNESDAY AND THURSDAY AND DEE PENING THE TROUGH...AXIS
EAST OF THE MISSISSIPPI VALLEY. BOTH SHOW A 1046MB HIGH OVER
MISSOURI FRIDAY MORNING. 1000 TO 700MB THICK LAYERS CAPTURES COLD
AIR BETTER WITH 2800M OR LESS JUST NORTH OF THE FORECAST AREA
FRIDAY MORNING. HAVE AND WILL CONTINUE HARD FREEZE TEMPS AND
WORDING FOR THIS TIME. ANOTHER EMBEDDED SHORT WAVE IS EXPECTED TO
DIVE SOUTH ACROSS THE LOWER MISSISSIPPI VALLEY LATE SATURDAY INTO
SUNDAY. THICKNESS LAYER ARE EXPECTED TO INCREASE SIGNIFICANTLY BY
MIDDAY SATURDAY. PRECIPITABLE WATER VALUE MAY INCREASE UP TO 0.7
INCH OVER THE AREA LATE SATURDAY AND ONLY A SLIGHT CHANCE OF RAIN
MAY BE YIELD SATURDAY NIGHT INTO EARLY SUNDAY. OTHERWISE...A COLD
DRY FORECAST IS ON TAP.

&&


New Orleans Local Weather thread - ROLLTIDE - 01-13-2009 10:16 PM

[Image: HWO.png]


New Orleans Local Weather thread - dkmac - 01-14-2009 02:10 PM

[SIZE="4"]Hard Freeze Watch[/SIZE]

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1048 AM CST WED JAN 14 2009

...ARCTIC COLD AIR INVADES THE CENTRAL GULF COAST THIS WEEK...

.ANOTHER SURGE OF VERY COLD AIR ASSOCIATED WITH AN ARCTIC HIGH
PRESSURE WILL BUILD INTO THE REGION THURSDAY. THIS NEXT ARCTIC
COLD FRONT WILL LIKELY YIELD THE COLDEST TEMPERATURES OF THE
SEASON ACROSS SOUTHERN MISSISSIPPI AND SOUTHEAST LOUISIANA
THURSDAY NIGHT INTO FRIDAY MORNING.

LAZ034>040-046>050-MSZ068>071-077-080>082-150500-
/O.NEW.KLIX.HZ.A.0001.090116T0600Z-090116T1400Z/
POINTE COUPEE-WEST FELICIANA-EAST FELICIANA-ST. HELENA-TANGIPAHOA-
WASHINGTON-ST. TAMMANY-IBERVILLE-WEST BATON ROUGE-
EAST BATON ROUGE-ASCENSION-LIVINGSTON-WILKINSON-AMITE-PIKE-
WALTHALL-PEARL RIVER-HAN****-HARRISON-JACKSON-
INCLUDING THE CITIES OF...NEW ROADS...LIVONIA...
ST. FRANCISVILLE...JACKSON...CLINTON...GREENSBURG...MONTPELIER...
HAMMOND...PONCHATOULA...BOGALUSA...FRANKLINTON...SLIDELL...
MANDEVILLE...COVINGTON...LACOMBE...PLAQUEMINE...WHITE CASTLE...
PORT ALLEN...ADDIS...BRUSLY...BATON ROUGE...GONZALES...
DONALDSONVILLE...DENHAM SPRINGS...WALKER...CENTREVILLE...
WOODVILLE...GLOSTER...LIBERTY...CROSBY...MCCOMB...TYLERTOWN...
PICAYUNE...BAY ST. LOUIS...WAVELAND...DIAMONDHEAD...GULFPORT...
BILOXI...PASCAGOULA...OCEAN SPRINGS...MOSS POINT...GAUTIER...
ST. MARTIN
1048 AM CST WED JAN 14 2009

...HARD FREEZE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH
FRIDAY MORNING...

THE NATIONAL WEATHER SERVICE IN SLIDELL HAS ISSUED A HARD FREEZE
WATCH...WHICH IS IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY
MORNING.

ANOTHER SURGE OF VERY COLD AIR WILL PUSH SOUTH OUT OF CANADA AND
THE HIGH PLAINS AND INTO SOUTHERN MISSISSIPPI AND SOUTHEAST LOUISIANA
THURSDAY. THIS SURGE WILL SERVE TO RE-ENFORCE THE COLD AIR
ALREADY IN PLACE ACROSS THE REGION AND WILL RESULT IN A HARD
FREEZE LATE THURSDAY INTO FRIDAY MORNING. IN GENERAL...A HARD
FREEZE WITH LOW TEMPERATURES IN THE LOWER TO MID 20S WILL OCCUR
LATE THURSDAY NIGHT INTO FRIDAY MORNING ACROSS SOUTHERN
MISSISSIPPI AND THOSE AREAS OF SOUTHEAST LOUISIANA TO THE NORTH OF
A DONALDSONVILLE TO LAKE PONTCHARTRAIN LINE. IN ADDITION...ANOTHER
HARD FREEZE MAY OCCUR LATE FRIDAY NIGHT INTO SATURDAY MORNING.

A HARD FREEZE WATCH MEANS THE POTENTIAL EXISTS FOR LOW TEMPERATURES
TO REMAIN BELOW 26 DEGREES FOR 4 OR MORE HOURS. THESE CONDITIONS
WILL KILL SENSITIVE OUTDOOR VEGETATION...HARM OUTDOOR PETS...AND
HAS THE POTENTIAL TO CAUSE EXPOSED WATER PIPES TO BURST.

IF YOU MUST GO OUTSIDE...REMEMBER THAT SEVERAL LAYERS OF CLOTHES WILL
KEEP YOUR WARMER THAN A SINGLE HEAVY COAT. A HAT IS ALSO IMPORTANT
AS 20 PERCENT OF BODY HEAT LOSS IS THROUGH THE HEAD.


New Orleans Local Weather thread - ROLLTIDE - 01-14-2009 10:33 PM

FXUS64 KLIX 142128
AFDLIX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
328 PM CST WED JAN 14 2009

.DISCUSSION...
LATEST SURFACE ANALYSIS SHOWED A 1027MB HIGH PRESSURE OVER SOUTH
LOUISIANA AND SOUTH MISSISSIPPI. IN ADDITION...A 1012MB LOW OVER
CENTRAL INDIANA WITH A TRAILING FRONTAL BOUNDARY SOUTHWEST TO THE
OZARKS BACK TO WESTERN KANSAS. A STRONG THERMAL GRADIENT WAS NOTED
JUST NORTH OF THE FRONTAL BOUNDARY ALONG WITH COLDER AIR. THIS
MORNING FREEZE WARNING VERIFIED WELL AS MANY SITES ACROSS THE
RIVER PARISHES MANAGED TO COOL DOWN TO OR SLIGHTLY BELOW THE
FREEZING MARK. THIS MORNING SOUNDING SHOWED SIGNIFICANT DRYING
ABOVE 975MB AND THIS AIR HAS MIXED DOWN TO THE SURFACE AT
MCCOMB(TD AT 9F) AND BATON ROUGE(TD AT 15F) AT 20Z. THICKNESS
LAYERS ARE EXPECTED TO INCREASE BY 30M FROM THIS MORNING TO TONIGHT
AS THE SHORT WAVE ASSOCIATED FRONT APPROACHES THE AREA. EXPECTING
A LIGHT FREEZE NORTH AND NEAR FREEZE SOUTH TONIGHT. SHORT WAVE IS
EXPECT TO ROUND BASE OF THE MAIN TROUGH THURSDAY AND FRONTAL
PASSAGE EXPECTED BETWEEN 12Z AND 18Z THURSDAY. STRONG COLD AIR
ADVECTION IS EXPECTED WITH THICKNESS LAYERS DECREASING BY 12Z
THURSDAY AND CONTINUING THROUGH MIDDAY FRIDAY. FORECASTED TEMPS
FOR FRIDAY MORNING ARE IN LINE WITH FREEZE WATCH CRITERIA AND THIS
EPISODE MAY OCCUR SATURDAY MORNING...MAINLY ACROSS THE MISSISSIPPI
COASTAL...FLORIDA PARISHES NORTH OF LAKE PONTCHARTRAIN AND EXTREME
SOUTH CENTRAL MISSISSIPPI. THE MAIN TROUGH IS EXPECTED TO LIFT SLIGHTLY TO
THE EAST. ANOTHER SYSTEM IS EXPECTED TO SWING SOUTH ACROSS THE
AREA SUNDAY RATHER THAN SATURDAY NIGHT. WILL DELAY SLIGHT RAIN
CHANCE FOR SUNDAY.

&&