Freeze Warning 1, NWS St. Louis, MO

Bond County, IL, Calhoun County, IL, Jersey County, IL, Madison County, IL, Monroe County, IL, Saint Clair County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Franklin County, MO, Gasconade County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Moniteau County, MO, Montgomery County, MO, Osage County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Louis County, MO, Warren County, MO, Washington County, MO

000 
WWUS73 KLSX 052025
NPWLSX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
325 PM CDT SUN APR 5 2009

ILZ098-099-MOZ041-042-047>052-059>062-072-073-061000-
/O.NEW.KLSX.FZ.W.0002.090407T0000Z-090407T1400Z/
/O.EXT.KLSX.FZ.A.0001.090408T0600Z-090408T1400Z/
/O.CON.KLSX.FZ.W.0001.090406T0600Z-090406T1400Z/
CALHOUN IL-JERSEY IL-BOONE-AUDRAIN-MONITEAU-COLE-OSAGE-CALLAWAY-
MONTGOMERY-LINCOLN-GASCONADE-WARREN-ST. CHARLES-FRANKLIN-CRAWFORD-
WASHINGTON-
INCLUDING THE CITIES OF...COLUMBIA...MEXICO...JEFFERSON CITY...
ST CHARLES...UNION
325 PM CDT SUN APR 5 2009

...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM CDT
MONDAY...
...FREEZE WARNING IN EFFECT FROM 7 PM MONDAY TO 9 AM CDT
TUESDAY...
...FREEZE WATCH NOW IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY MORNING...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM 7 PM MONDAY TO 9 AM CDT
TUESDAY. THE FREEZE WATCH IS NOW IN EFFECT FROM LATE TUESDAY
NIGHT THROUGH WEDNESDAY MORNING. A FREEZE WARNING REMAINS IN
EFFECT FROM 1 AM TO 9 AM CDT MONDAY. 

AN UNSEASONABLY COLD AIRMASS WILL MOVE INTO MISSOURI AND ILLINOIS
TONIGHT AND REMAIN OVER THE AREA EARLY THIS WEEK. LOW TEMPERATURES
TONIGHT WILL FALL TO AROUND 30 DEGREES. TEMPERATURES WILL FALL
INTO THE MIDDLE AND UPPER 20S FOR SEVERAL HOURS ON MONDAY NIGHT
AND EARLY TUESDAY WHICH MAY CAUSE A MORE WIDESPREAD HARD OR KILLING
FREEZE ON TENDER VEGETATION.

THE COLD AIRMASS MAY BEGIN TO PULL AWAY FROM THE AREA ON TUESDAY
NIGHT...BUT SKIES ARE EXPECTED TO BE MOSTLY CLEAR AND THE WINDS
WILL BE RELATIVELY LIGHT. LOWS ARE STILL EXPECTED TO BE NEAR 30
DEGREES...SO THE FREEZE WATCH REMAINS IN EFFECT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MANY SHRUBS...TREES...AND FLOWERS HAVE ALREADY STARTED BLOOMING
ACROSS THE REGION AND ARE SUSCEPTIBLE TO FREEZING TEMPERATURES.
COMMERCIAL GROWERS AND HOME GARDENERS ALIKE SHOULD START PLANNING
FOR AN EXTENDED PERIOD OF BELOW NORMAL TEMPERATURES. PROTECTING
TENDER VEGETATION AND BRINGING ANY POTTED PLANTS INDOORS IS
ADVISED AND MAY REDUCE THE AMOUNT OF ECONOMIC LOSS ASSOCIATED
WITH A HARD FREEZE.

&&

$$

ILZ064-100>102-MOZ063>065-084-099-061000-
/O.NEW.KLSX.FZ.W.0002.090407T0000Z-090407T1400Z/
/O.EXA.KLSX.FZ.W.0001.090406T0600Z-090406T1400Z/
/O.EXT.KLSX.FZ.A.0001.090408T0600Z-090408T1400Z/
BOND IL-MADISON IL-ST. CLAIR IL-MONROE IL-ST. LOUIS-
ST. LOUIS CITY-JEFFERSON-IRON-REYNOLDS-
INCLUDING THE CITIES OF...EDWARDSVILLE...BELLEVILLE...ST LOUIS
325 PM CDT SUN APR 5 2009

...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM CDT MONDAY...
...FREEZE WARNING IN EFFECT FROM 7 PM MONDAY TO 9 AM CDT
TUESDAY...
...FREEZE WATCH NOW IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY MORNING...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM 1 AM TO 9 AM CDT MONDAY. A
FREEZE WARNING HAS ALSO BEEN ISSUED FROM 7 PM MONDAY TO 9 AM CDT
TUESDAY. THE FREEZE WATCH IS NOW IN EFFECT FROM LATE TUESDAY
NIGHT THROUGH WEDNESDAY MORNING. 

AN UNSEASONABLY COLD AIRMASS WILL MOVE INTO MISSOURI AND ILLINOIS
TONIGHT AND REMAIN OVER THE AREA EARLY THIS WEEK. LOW TEMPERATURES
TONIGHT WILL FALL INTO THE LOWER 30S. TEMPERATURES WILL FALL INTO
THE MIDDLE AND UPPER 20S FOR SEVERAL HOURS ON MONDAY NIGHT AND
EARLY TUESDAY WHICH MAY CAUSE A MORE WIDESPREAD HARD OR KILLING
FREEZE ON TENDER VEGETATION.

THE COLD AIRMASS MAY BEGIN TO PULL AWAY FROM THE AREA ON TUESDAY
NIGHT...BUT SKIES ARE EXPECTED TO BE MOSTLY CLEAR AND THE WINDS
WILL BE RELATIVELY LIGHT. LOWS ARE STILL EXPECTED TO BE NEAR 30
DEGREES...SO THE FREEZE WATCH REMAINS IN EFFECT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MANY SHRUBS...TREES...AND FLOWERS HAVE ALREADY STARTED BLOOMING
ACROSS THE REGION AND ARE SUSCEPTIBLE TO FREEZING TEMPERATURES.
COMMERCIAL GROWERS AND HOME GARDENERS ALIKE SHOULD START PLANNING
FOR AN EXTENDED PERIOD OF BELOW NORMAL TEMPERATURES. PROTECTING
TENDER VEGETATION AND BRINGING ANY POTTED PLANTS INDOORS IS
ADVISED AND MAY REDUCE THE AMOUNT OF ECONOMIC LOSS ASSOCIATED
WITH A HARD FREEZE.

&&

$$

ILZ065-069-070-074-079-MOZ074-075-085-061000-
/O.NEW.KLSX.FZ.W.0002.090407T0000Z-090407T1400Z/
/O.EXT.KLSX.FZ.A.0001.090408T0600Z-090408T1400Z/
FAYETTE IL-CLINTON IL-MARION IL-WASHINGTON IL-RANDOLPH IL-
ST. FRANCOIS-STE. GENEVIEVE-MADISON-
INCLUDING THE CITIES OF...VANDALIA...SALEM...CHESTER...FARMINGTON
325 PM CDT SUN APR 5 2009

...FREEZE WARNING IN EFFECT FROM 7 PM MONDAY TO 9 AM CDT
TUESDAY...
...FREEZE WATCH NOW IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY MORNING...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM 7 PM MONDAY TO 9 AM CDT
TUESDAY. THE FREEZE WATCH IS NOW IN EFFECT FROM LATE TUESDAY
NIGHT THROUGH WEDNESDAY MORNING. 

AN UNSEASONABLY COLD AIRMASS WILL BUILD INTO THE REGION TONIGHT AND
THEN DOMINATE OUR WEATHER THROUGH THE MIDDLE PART OF THIS WEEK.
TEMPERATURES ARE EXPECTED TO FALL INTO THE LOWER 30S BY DAYBREAK
MONDAY MORNING...BUT AS OF RIGHT NOW...ANY TIME SPENT BELOW
FREEZING IS EXPECTED TO BE BRIEF.

TEMPERATURES WILL FALL INTO THE MIDDLE AND UPPER 20S FOR SEVERAL
HOURS ON MONDAY NIGHT AND EARLY TUESDAY WHICH MAY CAUSE A WIDESPREAD
HARD OR KILLING FREEZE ON TENDER VEGETATION.

THE COLD AIRMASS MAY BEGIN TO PULL AWAY FROM THE AREA ON TUESDAY
NIGHT...BUT SKIES ARE EXPECTED TO BE MOSTLY CLEAR AND THE WINDS
WILL BE RELATIVELY LIGHT. LOWS ARE STILL EXPECTED TO BE NEAR 30
DEGREES...SO THE FREEZE WATCH REMAINS IN EFFECT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MANY SHRUBS...TREES...AND FLOWERS HAVE ALREADY STARTED BLOOMING
ACROSS THE REGION AND ARE SUSCEPTIBLE TO FREEZING TEMPERATURES.
COMMERCIAL GROWERS AND HOME GARDENERS ALIKE SHOULD START PLANNING
FOR AN EXTENDED PERIOD OF BELOW NORMAL TEMPERATURES. PROTECTING
TENDER VEGETATION AND BRINGING ANY POTTED PLANTS INDOORS IS
ADVISED AND MAY REDUCE THE AMOUNT OF ECONOMIC LOSS ASSOCIATED
WITH A HARD FREEZE.

&&

$$

BRITT

000 
WWUS73 KLSX 060840
NPWLSX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
340 AM CDT MON APR 6 2009

ILZ064-098>102-MOZ052-060>065-072-073-084-099-062130-
/O.CAN.KLSX.FZ.W.0001.000000T0000Z-090406T1400Z/
/O.CON.KLSX.FZ.W.0002.090407T0000Z-090407T1400Z/
/O.CON.KLSX.FZ.A.0001.090408T0600Z-090408T1400Z/
BOND IL-CALHOUN IL-JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-
LINCOLN-WARREN-ST. CHARLES-FRANKLIN-ST. LOUIS-ST. LOUIS CITY-
JEFFERSON-CRAWFORD-WASHINGTON-IRON-REYNOLDS-
INCLUDING THE CITIES OF...EDWARDSVILLE...BELLEVILLE...
ST CHARLES...UNION...ST LOUIS
340 AM CDT MON APR 6 2009

...FREEZE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO
9 AM CDT TUESDAY...
...FREEZE WATCH REMAINS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY MORNING...
...FREEZE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS CANCELLED THE FREEZE
WARNING. A FREEZE WARNING REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 9 AM CDT TUESDAY. A FREEZE WATCH REMAINS IN EFFECT
FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING. 

AN UNSEASONABLY COLD AIRMASS WILL DOMINATE THE MID MISSISSIPPI
VALLEY REGION UNTIL MID WEEK. HOWEVER...TEMPERATURES WILL EITHER
FAIL TO GET BELOW FREEZING OR MAY VERY BRIEFLY TOUCH THE FREEZING 
MARK THIS MORNING BEFORE TEMPERATURES INCREASE AFTER SUNRISE. AS A
RESULT...THE FREEZE WARNING FOR THIS MORNING HAS BEEN CANCELLED.

LOOK FOR LOW TEMPERATURES IN THE MID TO UPPER 20S FOR SEVERAL
HOURS ON MONDAY NIGHT AND EARLY TUESDAY WHICH MAY CAUSE A MORE
WIDESPREAD HARD OR KILLING FREEZE ON TENDER VEGETATION.

THE COLD AIRMASS WILL BEGIN TO SLOWLY PULL AWAY FROM THE AREA ON
TUESDAY NIGHT...BUT SKIES ARE EXPECTED TO BE CLEAR AND THE WINDS
WILL BE RELATIVELY LIGHT. LOWS ARE STILL EXPECTED TO BE IN THE
LOWER 30S...SO THE FREEZE WATCH REMAINS IN EFFECT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MANY SHRUBS...TREES...AND FLOWERS HAVE ALREADY STARTED BLOOMING
ACROSS THE REGION AND ARE SUSCEPTIBLE TO FREEZING TEMPERATURES.
COMMERCIAL GROWERS AND HOME GARDENERS ALIKE SHOULD START PLANNING
FOR AN EXTENDED PERIOD OF BELOW NORMAL TEMPERATURES. PROTECTING
TENDER VEGETATION AND BRINGING ANY POTTED PLANTS INDOORS IS
ADVISED AND MAY REDUCE THE AMOUNT OF ECONOMIC LOSS ASSOCIATED
WITH A HARD FREEZE.

&&

$$

MOZ041-042-047>051-059-062130-
/O.CON.KLSX.FZ.W.0001.000000T0000Z-090406T1400Z/
/O.CON.KLSX.FZ.W.0002.090407T0000Z-090407T1400Z/
/O.CON.KLSX.FZ.A.0001.090408T0600Z-090408T1400Z/
BOONE-AUDRAIN-MONITEAU-COLE-OSAGE-CALLAWAY-MONTGOMERY-GASCONADE-
INCLUDING THE CITIES OF...COLUMBIA...MEXICO...JEFFERSON CITY
340 AM CDT MON APR 6 2009

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING...
...FREEZE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO
9 AM CDT TUESDAY...
...FREEZE WATCH REMAINS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY MORNING...

A FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING. A
FREEZE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 9 AM
CDT TUESDAY. A FREEZE WATCH REMAINS IN EFFECT FROM LATE TUESDAY
NIGHT THROUGH WEDNESDAY MORNING. 

AN UNSEASONABLY COLD AIRMASS WILL DOMINATE THE MID MISSISSIPPI
VALLEY REGION UNTIL MID WEEK. AFTER ONE BOUT OF TEMPERATURES
FALLING BELOW FREEZING THIS MORNING...LOOK FOR LOW TEMPERATURES
IN THE MID TO UPPER 20S FOR SEVERAL HOURS ON MONDAY NIGHT AND EARLY
TUESDAY WHICH MAY CAUSE A MORE WIDESPREAD HARD OR KILLING FREEZE
ON TENDER VEGETATION.

THE COLD AIRMASS WILL BEGIN TO SLOWLY PULL AWAY FROM THE AREA ON
TUESDAY NIGHT...BUT SKIES ARE EXPECTED TO BE CLEAR AND THE WINDS
WILL BE RELATIVELY LIGHT. LOWS ARE STILL EXPECTED TO BE IN THE
LOWER 30S...SO THE FREEZE WATCH REMAINS IN EFFECT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MANY SHRUBS...TREES...AND FLOWERS HAVE ALREADY STARTED BLOOMING
ACROSS THE REGION AND ARE SUSCEPTIBLE TO FREEZING TEMPERATURES.
COMMERCIAL GROWERS AND HOME GARDENERS ALIKE SHOULD START PLANNING
FOR AN EXTENDED PERIOD OF BELOW NORMAL TEMPERATURES. PROTECTING
TENDER VEGETATION AND BRINGING ANY POTTED PLANTS INDOORS IS
ADVISED AND MAY REDUCE THE AMOUNT OF ECONOMIC LOSS ASSOCIATED
WITH A HARD FREEZE.

&&

$$

ILZ065-069-070-074-079-MOZ074-075-085-062130-
/O.CON.KLSX.FZ.W.0002.090407T0000Z-090407T1400Z/
/O.CON.KLSX.FZ.A.0001.090408T0600Z-090408T1400Z/
FAYETTE IL-CLINTON IL-MARION IL-WASHINGTON IL-RANDOLPH IL-
ST. FRANCOIS-STE. GENEVIEVE-MADISON-
INCLUDING THE CITIES OF...VANDALIA...SALEM...CHESTER...FARMINGTON
340 AM CDT MON APR 6 2009

...FREEZE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO
9 AM CDT TUESDAY...
...FREEZE WATCH REMAINS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY MORNING...

A FREEZE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 9 AM
CDT TUESDAY. A FREEZE WATCH REMAINS IN EFFECT FROM LATE TUESDAY
NIGHT THROUGH WEDNESDAY MORNING. 

AN UNSEASONABLY COLD AIRMASS WILL DOMINATE THE MID MISSISSIPPI
VALLEY REGION UNTIL MID WEEK. LOOK FOR LOW TEMPERATURES IN THE
MID TO UPPER 20S FOR SEVERAL HOURS ON MONDAY NIGHT AND EARLY
TUESDAY WHICH MAY CAUSE A MORE WIDESPREAD HARD OR KILLING FREEZE
ON TENDER VEGETATION.

THE COLD AIRMASS WILL BEGIN TO SLOWLY PULL AWAY FROM THE AREA ON
TUESDAY NIGHT...BUT SKIES ARE EXPECTED TO BE CLEAR AND THE WINDS
WILL BE RELATIVELY LIGHT. LOWS ARE STILL EXPECTED TO BE IN THE
LOWER 30S...SO THE FREEZE WATCH REMAINS IN EFFECT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MANY SHRUBS...TREES...AND FLOWERS HAVE ALREADY STARTED BLOOMING
ACROSS THE REGION AND ARE SUSCEPTIBLE TO FREEZING TEMPERATURES.
COMMERCIAL GROWERS AND HOME GARDENERS ALIKE SHOULD START PLANNING
FOR AN EXTENDED PERIOD OF BELOW NORMAL TEMPERATURES. PROTECTING
TENDER VEGETATION AND BRINGING ANY POTTED PLANTS INDOORS IS
ADVISED AND MAY REDUCE THE AMOUNT OF ECONOMIC LOSS ASSOCIATED
WITH A HARD FREEZE.

&&

$$

TES

000 
WWUS73 KLSX 061410
NPWLSX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
910 AM CDT MON APR 6 2009

MOZ041-042-047>051-059-070215-
/O.EXP.KLSX.FZ.W.0001.000000T0000Z-090406T1400Z/
/O.CON.KLSX.FZ.W.0002.090407T0000Z-090407T1400Z/
/O.CON.KLSX.FZ.A.0001.090408T0600Z-090408T1400Z/
BOONE-AUDRAIN-MONITEAU-COLE-OSAGE-CALLAWAY-MONTGOMERY-GASCONADE-
INCLUDING THE CITIES OF...COLUMBIA...MEXICO...JEFFERSON CITY
910 AM CDT MON APR 6 2009

...FREEZE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO
9 AM CDT TUESDAY...
...FREEZE WATCH REMAINS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY MORNING...
...FREEZE WARNING HAS EXPIRED...

THE FREEZE WARNING IS NO LONGER IN EFFECT AS TEMPERATURES HAVE
RECENTLY RISEN ABOVE FREEZING OVER MUCH OF THE AREA THIS MORNING.
A FREEZE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 9 AM
CDT TUESDAY. A FREEZE WATCH REMAINS IN EFFECT FROM LATE TUESDAY
NIGHT THROUGH WEDNESDAY MORNING.

AN UNSEASONABLY COLD AIRMASS WILL DOMINATE THE MID MISSISSIPPI
VALLEY REGION UNTIL MID WEEK. AFTER ONE BOUT OF TEMPERATURES
FALLING BELOW FREEZING THIS MORNING...LOOK FOR LOW TEMPERATURES IN
THE MID TO UPPER 20S FOR SEVERAL HOURS ON MONDAY NIGHT AND EARLY
TUESDAY WHICH MAY CAUSE A MORE WIDESPREAD HARD OR KILLING FREEZE
ON TENDER VEGETATION.

THE COLD AIRMASS WILL BEGIN TO SLOWLY PULL AWAY FROM THE AREA ON
TUESDAY NIGHT...BUT SKIES ARE EXPECTED TO BE CLEAR AND THE WINDS
WILL BE RELATIVELY LIGHT. LOWS ARE STILL EXPECTED TO BE IN THE
LOWER 30S...SO THE FREEZE WATCH REMAINS IN EFFECT.

MANY SHRUBS...TREES...AND FLOWERS HAVE ALREADY STARTED BLOOMING
ACROSS THE REGION AND ARE SUSCEPTIBLE TO FREEZING TEMPERATURES.
COMMERCIAL GROWERS AND HOME GARDENERS ALIKE SHOULD START PLANNING
FOR AN EXTENDED PERIOD OF BELOW NORMAL TEMPERATURES. PROTECTING
TENDER VEGETATION AND BRINGING ANY POTTED PLANTS INDOORS IS
ADVISED AND MAY REDUCE THE AMOUNT OF ECONOMIC LOSS ASSOCIATED
WITH A HARD FREEZE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING IS ISSUED WHEN SUB-FREEZING TEMPERATURES ARE
FORECAST TO THREATEN OUTDOOR PLANTS. THOSE WITH AGRICULTURAL
INTERESTS IN THE WARNED AREA ARE ADVISED TO HARVEST OR PROTECT
TENDER VEGETATION. ALSO...POTTED PLANTS NORMALLY LEFT OUTDOORS
SHOULD BE COVERED OR BROUGHT INSIDE AWAY FROM THE COLD.

A FREEZE WATCH IS ISSUED WHEN SUB-FREEZING TEMPERATURES ARE
POSSIBLE. THESE CONDITIONS COULD DAMAGE OR KILL CROPS AND OTHER
SENSITIVE VEGETATION.

&&

$$

ILZ064-065-069-070-074-079-098>102-MOZ052-060>065-072>075-084-085-
099-070215-
/O.CON.KLSX.FZ.W.0002.090407T0000Z-090407T1400Z/
/O.CON.KLSX.FZ.A.0001.090408T0600Z-090408T1400Z/
BOND IL-FAYETTE IL-CLINTON IL-MARION IL-WASHINGTON IL-RANDOLPH IL-
CALHOUN IL-JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-LINCOLN-
WARREN-ST. CHARLES-FRANKLIN-ST. LOUIS-ST. LOUIS CITY-JEFFERSON-
CRAWFORD-WASHINGTON-ST. FRANCOIS-STE. GENEVIEVE-IRON-MADISON-
REYNOLDS-
INCLUDING THE CITIES OF...VANDALIA...SALEM...CHESTER...
EDWARDSVILLE...BELLEVILLE...ST CHARLES...UNION...ST LOUIS...
FARMINGTON
910 AM CDT MON APR 6 2009

...FREEZE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO
9 AM CDT TUESDAY...
...FREEZE WATCH REMAINS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY MORNING...

A FREEZE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 9 AM
CDT TUESDAY. A FREEZE WATCH REMAINS IN EFFECT FROM LATE TUESDAY
NIGHT THROUGH WEDNESDAY MORNING. 

AN UNSEASONABLY COLD AIRMASS WILL DOMINATE THE MID MISSISSIPPI
VALLEY REGION UNTIL MID WEEK. LOOK FOR LOW TEMPERATURES IN THE
MID TO UPPER 20S FOR SEVERAL HOURS ON MONDAY NIGHT AND EARLY
TUESDAY WHICH MAY CAUSE A MORE WIDESPREAD HARD OR KILLING FREEZE
ON TENDER VEGETATION.

THE COLD AIRMASS WILL BEGIN TO SLOWLY PULL AWAY FROM THE AREA ON
TUESDAY NIGHT...BUT SKIES ARE EXPECTED TO BE CLEAR AND THE WINDS
WILL BE RELATIVELY LIGHT. LOWS ARE STILL EXPECTED TO BE IN THE
LOWER 30S...SO THE FREEZE WATCH REMAINS IN EFFECT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MANY SHRUBS...TREES...AND FLOWERS HAVE ALREADY STARTED BLOOMING
ACROSS THE REGION AND ARE SUSCEPTIBLE TO FREEZING TEMPERATURES.
COMMERCIAL GROWERS AND HOME GARDENERS ALIKE SHOULD START PLANNING
FOR AN EXTENDED PERIOD OF BELOW NORMAL TEMPERATURES. PROTECTING
TENDER VEGETATION AND BRINGING ANY POTTED PLANTS INDOORS IS
ADVISED AND MAY REDUCE THE AMOUNT OF ECONOMIC LOSS ASSOCIATED
WITH A HARD FREEZE.

&&

$$

GKS

AREA FORECAST DISCUSSION...UPDATED AVIATION
NATIONAL WEATHER SERVICE ST LOUIS MO
1152 PM CDT SAT APR 4 2009

.UPDATE...
/922 PM CDT SAT APR 4 2009/
MADE SOME SUBTLE CHANGES TO POPS FOR RMNDR OF THE NIGHT. CURRENT
ACTIVITY OVR NW MO SHOULD CONTINUE TO ROTATE NNE AS SHORTWAVE
ENERGY ROTATES AROUND UPR LOW...WHICH WILL BRING IT INTO NW THIRD
OF OUR CWA...ALONG AND WEST OF A JEF-UIN LINE. HOWEVER...PCPN
CHANCES IN THE SOUTHEAST MUCH MORE UNCERTAIN. 00Z RAOBS INDICATE
LO LVL AMS OVER AND UPSTREAM OF THIS AREA IS QUITE DRY...AND ITS
CERTAINLY GOING TO TAKE MUCH OF THE NIGHT FOR SIGNIFICANT MOISTURE
TO ADVECT INTO THIS AREA EVEN WITH 30+ KTS S-SW LO LVL FLOW. IT
ALSO APPEARS THAT A SECONDARY TROF ROTATING THROUGH S QUADRANT OF
UPR LOW WILL EVENTUALLY ENHANCE UVV OVER THIS AREA. IN OTHER
WORDS...ENOUGH MOISTURE AND DYNAMICS APPEAR TO BE COMING TOGETHER
TO GENERATE SM TSRA...QUESTION IS WHETHER THIS WILL BE BFR OR
AFTER DAYBREAK. FOR NOW IN OUR SE COUNTIES HV KEPT POPS IN CHC
CATEGORY...IN THE 09-12Z TIME FRAME.

TRUETT
&&

.DISCUSSION...
/326 PM CDT SAT APR 4 2009/
MAIN CONCERNS DEAL WITH FIRE WEATHER DANGER EARLY THIS EVENING
(SEE FIRE WEATHER SECTION BELOW)...THE CHANCE FOR STRONG/SEVERE
THUNDERSTORMS AND GRADIENT WINDS ON SUNDAY FOLLOWED BY
UNSEASONABLY COLD WEATHER CURRENTLY ADDRESSED BY GOING FREEZE
WATCH. HAVE NOT MADE TOO MUCH CHANGE TO GOING FORECAST INCLUDING
THE FREEZE WATCH. NAM/GFS ARE IN GENERAL AGREEMENT WITH RESULTING
SENSIBLE WEATHER OVER MO/IL...THOUGH FOLLOWED CLOSER TO THE NAM
WHICH LINES UP BETTER WITH THE OTHER MODELS WITH THE DEPTH OF THE
UPPER SYSTEM AS IT EXITS THE AREA COMPARED TO THE GFS.

AFTER AN INITALLY DRY EARLY EVENING...CHANCES OF TSRA WILL RETURN
LATE THIS EVENING AS 925-850MB MOISTURE CONVERGENCE INCREASES ACROSS
THE CWA ON NOSE OF BROAD LOW LEVEL JET UNDER INCREASING LARGE SCALE
ASCENT IN ADVANCE OF MID LEVEL TROUGH AND IN LEFT EXIT REGION OF
UPPER JET. SREF MEAN/NAM MUCAPES INCREASE INTO THE 500-1000 J/KG
LATE TONIGHT/EARLY SUNDAY AHEAD OF THE COLD FRONT THAT WILL BE
ENTERING THE WRN CWA AROUND 12Z. FRONT SHOULD MOVE ACROSS THE CWA
SUNDAY MORNING AND EXIT THE EASTERN COUNTY BY MID AFTERNOON.
STRONG/POSSIBLY SEVERE THUNDERSTORMS ARE POSSIBLE...ESPECIALLY OVER
S CNTRL IL ON SUNDAY GIVEN THE 0-6KM BULK SHEAR OF 60KTS. SOUTHERN
PART OF THE CWA WILL BE UNDER THE DRY SLOT...SO HAVE KEPT LOWEST
POPS THERE WITH DRY WEATHER IN THE AFTERNOON. NAM FORECAST SOUNDINGS
HAVE DEEP MIXING TO 750MB TOMORROW AFTERNOON WHICH SHOULD HELP MIX
DOWN SOME OF THE 35 KTS 850MB WINDS.

UNSEASONABLY COLD AIR MASS THEN MOVES IN BEHIND COLD FRONT. NAM
FORECAST SOUNDINGS FAVOR CHANGEOVER TO SNOW OVER THE FAR NORTHERN
COUNTIES LATE SUNDAY AFTERNOON...AND OVER THE REST OF THE CWA ON
SUNDAY EVENING. LACK OF SIGNIFICANT FORCING FROM SUNDAYS SYSTEM
AND ALSO FROM WEAK SECONDARY TROUGH THAT WILL MOVE SOUTHWARD
ACROSS THE AREA ON MONDAY WILL CAUSE ONLY LIGHT SNOW/SNOW SHOWERS.
HAVE ONLY A FEW TENTHS OF SNOWFALL GOING FOR STORM TOTAL.

FREEZING CONDITIONS DURING THE LATE NIGHT/EARLY MORNING HOURS
LOOKING INCREASING LIKELY EARLY NEXT WEEK. SUNDAY NIGHT/MONDAY
MORNING AND MONDAY NIGHT/TUESDAY MORNING WILL BE COLD DESPITE THE
LACK OF RADIATIVE PROCESSES WITH ONLY TUESDAY NIGHT/WEDNESDAY MORNING
HAVING MOSTLY CLEAR SKIES WITH LIGHT WINDS. NAM MOS/GFS MOS/SREF 2M
TEMPS ARE IN GOOD AGREEMENT FOR SUNDAY NIGHT LOWS. DO NOT SEE MUCH
RECOVERY ON MONDAY GIVEN THE CLOUDS AND CONTINUED COLD AIR
ADVECTION...SO LEANED TOWARD COLDER SREF MEAN 2M TEMPS WHICH THEN
CALLED FOR LEANING TOWARD COLDER NAM MOS ON MONDAY NIGHT.

HAVE SIDED ON A BLEND OF THE ECMWF/CANADIAN GEM FOR MID AND LATE
WEEK AS GFS LOOKS TOO PROGRESSIVE CONSIDERING HOW AMPLIFIED THE
UPPER FLOW IS INITIALLY.  THIS SLOWS HOW QUICKLY THE CLOSED LOW OVER
THE WRN CONUS LIFTS OUT AND MOVES ACROSS MO/IL...SO HAVE DELAYED
CHANCE OF SHRA/TSRA UNTIL THURSDAY/THURSDAY NIGHT WITH HIGHEST
POPS/CHANCE OF TSRA IN THE SRN HALF OF THE CWA BASED ON TRACK OF
SURFACE LOW.  SYSTEM MOVES QUICKLY EAST LEAVING WEATHER DRY FROM
FRIDAY ON.  HAVE TRENDED A BIT COOLER ON GUIDANCE GIVEN THE EXPECTED
INITIALLY COOL AIRMASS AND SHOWED A SMALL DIURNAL TREND WITH THE
LATE WEEK STORM SYSTEM IN ALL BUT THE WARM SECTOR.

BRITT
&&

.AVIATION...
/1151 PM CDT SAT APR 4 2009/
FOR THE 06Z TAFS...SCATTERED SHOWERS AND A FEW THUNDERSTORMS THAT
DEVELOPED OVER WESTERN MISSOURI HAVE MOVED INTO CENTRAL MO AND MAY
HOLD TOGETHER ENOUGH TO REACH KCOU AND KUIN IN THE NEXT HOUR OR SO.
SO KEPT MENTION IN TAFS...BUT REMOVED TSTM MENTION AND JUST PUT IN
VCTS ALONG WITH SHOWERS. AS FOR KSUS/KSTL...FEEL THAT THEY WILL
REMAIN DRY TIL SYSTEM MOVES THROUGH LATER TODAY. LOOKS LIKE TAF
SITES TO BE DRY SLOTTED TIL MAIN FRONT/SURFACE LOW MOVES
THROUGH...SO VFR CIGS TO PREVAIL TIL THEN. AS FOR FRONTAL
BOUNDARY...LOOKS LIKE IT WILL MOVE THROUGH KCOU AROUND 15Z...KUIN BY
17Z AND KSUS/KSTL BY 19Z...WITH CIGS LOWERING TO MVFR...EVEN IFR AT
KCOU AND KUIN. LIGHT RAIN TO MOVE IN BY LATE AFTERNOON...CHANGING
OVER TO A MIX OF RAIN AND SNOW BY EARLY EVENING. AS FOR WINDS...THEY
WILL SWITCH TO THE WEST TO NORTHWEST AND PICKUP WITH GUSTS TO 25KTS.

BYRD
&&

.FIRE WEATHER...
CONCERN CONTINUES ABOUT HEIGHTENED FIRE DANGER OVER THE SOUTHERN
HALF OF CWA ON SUNDAY BEHIND THE FRONT IF NOT MUCH RAINFALL IS
RECEIVED IN THIS AREA TONIGHT/EARLY SUNDAY. POST FRONTAL WINDS
WILL INCREASE OUT OF THE WEST WITH SOME GUSTS TO 35 MPH AND
RELATIVE HUMIDITES FALLING TO AROUND 30 PERCENT.

&&

.LSX WATCHES/WARNINGS/ADVISORIES...
MO...FREEZE WATCH FROM LATE SUNDAY NIGHT THROUGH WEDNESDAY MORNING
     FOR AUDRAIN-BOONE-CALLAWAY-COLE-CRAWFORD-FRANKLIN-GASCONADE-
     IRON-JEFFERSON-LINCOLN-MADISON-MONITEAU-MONTGOMERY-OSAGE-
     REYNOLDS-ST. CHARLES-ST. FRANCOIS-ST. LOUIS-ST. LOUIS CITY-
     STE. GENEVIEVE-WARREN-WASHINGTON.

IL...FREEZE WATCH FROM LATE SUNDAY NIGHT THROUGH WEDNESDAY MORNING
     FOR BOND IL-CALHOUN IL-CLINTON IL-FAYETTE IL-JERSEY IL-
     MADISON IL-MARION IL-MONROE IL-RANDOLPH IL-ST. CLAIR IL-
     WASHINGTON IL.

&&

WFO LSX

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
832 PM CDT SAT APR 4 2009

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-051200-
GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL-
MARION IL-WASHINGTON IL-RANDOLPH IL-ADAMS IL-BROWN IL-PIKE IL-
CALHOUN IL-JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-KNOX-LEWIS-
SHELBY-MARION-MONROE-RALLS-PIKE-BOONE-AUDRAIN-MONITEAU-COLE-OSAGE-
CALLAWAY-MONTGOMERY-LINCOLN-GASCONADE-WARREN-ST. CHARLES-FRANKLIN-
ST. LOUIS-ST. LOUIS CITY-JEFFERSON-CRAWFORD-WASHINGTON-
ST. FRANCOIS-STE. GENEVIEVE-IRON-MADISON-REYNOLDS-
832 PM CDT SAT APR 4 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND
CENTRAL MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS.

.DAY ONE...TONIGHT

THUNDERSTORMS WILL BECOME LIKELY OVERNIGHT ACROSS MUCH OF THE AREA. A FEW
STORMS OVER CENTRAL AND EASTERN MISSOURI MAY BE STRONG...CAPABLE
OF PRODUCING UP TO PENNY SIZE HAIL.

MODERATE AND MAJOR FLOODING IS FORECAST TO PERSIST ALONG THE
ILLINOIS RIVER. PLEASE SEE THE APPROPRIATE FLOOD PRODUCTS FOR
FURTHER INFORMATION.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THUNDERSTORMS ARE LIKELY AGAIN ON SUNDAY. THERE IS A SLIGHT RISK
OF SEVERE THUNDERSTORMS OVER PARTS OF SOUTH CENTRAL ILLINOIS...
WITH A FEW STORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL AND
DAMAGING WIND GUSTS.

WEST AND NORTHWEST WINDS WILL GUST TO 35 MPH SUNDAY AFTERNOON...
SUNDAY NIGHT...AND MONDAY.

SNOW WILL BE LIKELY ACROSS THE AREA SUNDAY NIGHT AND MONDAY...
ESPECIALLY FOR PARTS OF NORTHEAST MISSOURI AND WEST CENTRAL
ILLINOIS. LITTLE IF ANY SNOW ACCUMULATION IS EXPECTED.

LOW TEMPERATURES ARE EXPECTED TO FALL INTO THE MID TO UPPER 20S
ON SUNDAY NIGHT...MONDAY NIGHT...AND TUESDAY NIGHT WHICH WILL
LIKELY CAUSE HARM TO ANY VEGETATION THAT HAS ALREADY STARTED TO
GROW. A FREEZE WATCH IS IN EFFECT. FOR FURTHER INFORMATION...
PLEASE REFER TO THE WATCH PRODUCT.

THE NEXT STORM SYSTEM WILL BRING A CHANCE OF THUNDERSTORMS TO THE
REGION ON THURSDAY AND THURSDAY NIGHT.

MODERATE AND MAJOR FLOODING IS FORECAST TO PERSIST ALONG THE
ILLINOIS RIVER. PLEASE SEE THE APPROPRIATE FLOOD PRODUCTS FOR
FURTHER INFORMATION.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED TONIGHT.

&&

FOR A GRAPHICAL VERSION OF THIS INFORMATION SEE OUR
WEBPAGE AT (LOWERCASE)... HTTP://WWW.WEATHER.GOV/LSX/?N=HWO1

TRUETT

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
117 AM CDT SUN APR 5 2009

ILZ095-096-050700-
ADAMS IL-BROWN IL-
117 AM CDT SUN APR 5 2009

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ADAMS AND BROWN
COUNTIES UNTIL 200 AM CDT...

AT 116 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 7 MILES SOUTH OF CLAYTON...OR 21 MILES EAST OF
QUINCY...MOVING NORTHEAST AT 55 MPH.

PENNY SIZE HAIL...AND WINDS AROUND 40 MPH ARE EXPECTED WITH THIS
STORM.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...MOUND STATION...
BUCKHORN AND MOUNT STERLING.

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

CARNEY

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
154 AM CDT SUN APR 5 2009

MOZ018-019-026-050745-
KNOX MO-LEWIS MO-SHELBY MO-
154 AM CDT SUN APR 5 2009

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN KNOX...LEWIS AND
SHELBY COUNTIES UNTIL 245 AM CDT...

AT 154 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR CLARENCE...OR 12 MILES WEST OF SHELBINA...
MOVING NORTHEAST AT 60 MPH.

PENNY SIZE HAIL...AND WINDS AROUND 40 MPH ARE EXPECTED WITH THIS
STORM.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...SHELBYVILLE...
LEONARD...BETHEL...PLEVNA...NEWARK...STEFFENVILLE...LEWISTOWN...
EWING...MONTICELLO AND CANTON.

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

CARNEY