Alert archive / Missouri / Freeze Warnings in 2009

Freeze Warning 2, NWS St. Louis, MO

April 5, 200922 counties in Missouri; 11 counties in Illinois

NWS St. Louis, MO issued this freeze warning at Apr 5, 2009, 3:25 PM CDT for 22 counties in Missouri; 11 counties in Illinois. It took effect at Apr 6, 2009, 9:00 PM CDT. It was in force for 11 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 5, 2009, 3:25 PM CDT (20:25 UTC)
In effect from
Apr 6, 2009, 9:00 PM CDT
Expired
Apr 7, 2009, 8:29 AM CDT
In force
11 hr
Issued by
NWS St. Louis, MO
All 33 counties

Bond County, IL, Calhoun County, IL, Clinton County, IL, Fayette County, IL, Jersey County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Randolph County, IL, Saint Clair County, IL, Washington 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, Madison County, MO, Moniteau County, MO, Montgomery County, MO, Osage County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Warren County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 24 km from the middle of the area, began a volume at 20:26 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.4 hours before the alert went out and 258 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2009-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2009-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 422 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1159 m above ground
0-6 km bulk shear
77 kt
0-1 km storm-relative helicity
422 m²/s²
0-3 km storm-relative helicity
449 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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
5 follow-up statements
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
000 
WWUS73 KLSX 061934
NPWLSX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
234 PM CDT MON APR 6 2009

ILZ064-065-069-070-074-079-098>102-MOZ041-042-047>052-059>065-
072>075-084-085-099-070900-
/O.EXT.KLSX.FZ.W.0002.090407T0200Z-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-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-
INCLUDING THE CITIES OF...VANDALIA...SALEM...CHESTER...
EDWARDSVILLE...BELLEVILLE...COLUMBIA...MEXICO...JEFFERSON CITY...
ST CHARLES...UNION...ST LOUIS...FARMINGTON
234 PM CDT MON APR 6 2009

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

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

NORTHWEST WINDS WILL CONTINUE TO BRING COLD AIR INTO THE REGION
TONIGHT. TEMPERATURES WILL FALL INTO THE MIDDLE TO UPPER 20S FOR
SEVERAL HOURS TONIGHT AND EARLY TUESDAY WHICH WILL CAUSE HARM TO
ANY TENDER VEGETATION THAT HAS ALREADY BEGUN TO GROW THIS SPRING.

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.

&&

$$

BRITT
000 
WWUS73 KLSX 070832
NPWLSX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
332 AM CDT TUE APR 7 2009

ILZ064-065-069-070-074-079-098>102-MOZ041-042-047>052-059>065-
072>075-084-085-099-071415-
/O.CON.KLSX.FZ.W.0002.000000T0000Z-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-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-
INCLUDING THE CITIES OF...VANDALIA...SALEM...CHESTER...
EDWARDSVILLE...BELLEVILLE...COLUMBIA...MEXICO...JEFFERSON CITY...
ST CHARLES...UNION...ST LOUIS...FARMINGTON
332 AM CDT TUE APR 7 2009

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING...
...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY MORNING...

A FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING. A
FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY MORNING. 

NORTHWEST WINDS WILL CONTINUE TO BRING COLD AIR INTO THE REGION
OVERNIGHT. TEMPERATURES WILL FALL INTO THE MIDDLE TO UPPER 20S FOR 
SEVERAL HOURS THIS MORNING WHICH WILL CAUSE HARM TO ANY TENDER
VEGETATION THAT HAS ALREADY BEGUN TO GROW THIS SPRING.

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.

&&

$$

MILLER
000 
WWUS73 KLSX 071329
NPWLSX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
829 AM CDT TUE APR 7 2009

ILZ064-065-069-070-074-079-098>102-MOZ041-042-047>052-059>065-
072>075-084-085-099-080130-
/O.CAN.KLSX.FZ.W.0002.000000T0000Z-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-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-
INCLUDING THE CITIES OF...VANDALIA...SALEM...CHESTER...
EDWARDSVILLE...BELLEVILLE...COLUMBIA...MEXICO...JEFFERSON CITY...
ST CHARLES...UNION...ST LOUIS...FARMINGTON
829 AM CDT TUE APR 7 2009

...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY MORNING...
...FREEZE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS CANCELLED THE FREEZE
WARNING. A FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT
THROUGH WEDNESDAY MORNING. 

THE FREEZE WARNING WHICH WAS IN EFFECT EARLY THIS MORNING HAS BEEN
CANCELLED AS THE TEMPERATURES HAVE RECENTLY RISEN ABOVE FREEZING
OVER MOST OF THE REGION.

THE COLD AIRMASS WILL BEGIN TO SLOWLY PULL AWAY FROM THE AREA TONIGHT
...BUT SKIES ARE EXPECTED TO BE CLEAR AND THE WIND 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 PLAN FOR
ANOTHER NIGHT 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 FREEZE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

GKS

What forecasters said that day

The local office's own words before this freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS St. Louis, MO wrote its last area forecast discussion before this freeze warning went out at Apr 5, 2:41 PM CDT, 44 minutes earlier.

Area forecast discussion, Apr 5, 2:41 PM CDT, 44 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
241 PM CDT SUN APR 5 2009

.DISCUSSION...
/235 PM CDT SUN APR 5 2009/
MAIN CONCERN DEALS WITH FREEZE HEADLINES THE NEXT FEW NIGHTS.  WILL
EXPAND CURRENT FREEZE WARNING TONIGHT TO INCLUDE THE STL METRO AREA
AND WILL DROP THE REMAINING COUNTIES FROM THE FREEZE WATCH TOIGHT.
WILL ALSO UPGRADE FREEZE WATCH TOMORROW NIGHT TO A FREEZE WARNING
AND KEEP FREEZE WATCH FOR TUESDAY NIGHT.

NAM/GFS ARE IN RELATIVELY GOOD AGREEMENT THAT UPPER LOW CURRENTLY
OVER NORTHERN MO WILL MOVE EWD TONIGHT.  BEST UVVS WILL BE FOUND
OVER THE NRN CWA THIS EVENING AS THE UPPER LOW MOVES EWD WITH LESSER
CHANCES TO THE SOUTH.  COULD STILL BE SOME LIGHT ACCUMULATIONS OF
SNOW...PARTICULARLY CLOSE TO THE LOW TRACK.  CURRENT WEBCAMS FROM
IA WHERE IT HAS SNOWED TODAY SHOW THAT ACCUMULATION HAS BEEN
MAINLY ON GRASSY AREAS...AND THINK GROUND TEMPERATURES WILL HELP
LIMIT ACCUMULATIONS IN CWA TONIGHT. SUBSIDENCE THEN SITS IN AND
ONLY HAVE CHANCE POPS GOING OVERNIGHT AS THE LOW LIFTS OUT.
SECONDARY SHORTWAVE MOVING DOWN THE BACKSIDE OF UPPER LOW WILL
SUPPLY A LITTLE ASCENT TOMORROW. NAM FORECAST SOUNDINGS ARE
SHOWING SOME MEAGER AMOUNTS OF CAPE WHICH SUPPORT SCATTERED SNOW
SHOWERS. A THIRD AND WEAKER SHORTWAVE WILL RACE SOUTH ACROSS THE
REGION ON MONDAY NIGHT...SO HAVE KEPT FLURRIES GOING. DRY WEATHER
THEN SETS IN MIDWEEK AS UPPER LOW LIFTS NORTHEASTWARD.

TEMPERATURES WILL FALL QUICKLY BEHIND THE FRONT THIS EVENING.  WENT
CLOSER TO THE 2M NAM TEMPS TONIGHT WHICH VERIFIED PRETTY WELL AT
18Z.  LOWS SHOULD HIT 32F OR BELOW IN ALL BUT THE FARTHER EAST AND
SOUTHEAST COUNTIES TONIGHT.  SHOULDNT SEE A RISE OF MORE THAN 5-7
DEGREES TOMORROW WITH THE COLD AIR ADVECTION AND LOW CLOUDS...SO
WENT CLOSER TO THE COOLER SREF 2M TEMPS.  GUIDANCE LOWS HAVE BEEN
CONSISTENTLY AT BELOW 30F FOR SEVERAL RUNS...AND GIVEN IM GOING
COLDER THAN GUIDANCE FOR HIGHS TOMORROW...HAVE HIGH ENOUGH
CONFIDENCE TO GO AHEAD WITH A WARNING FOR TOMORROW NIGHT.  WILL
NARROW FREEZE WATCH ON TUESDAY NIGHT TO BE JUST THE OVERNIGHT AND
EARLY MORNING HOURS ON WEDNESDAY. GUIDANCE TEMPERATURES ARE NOW
RIGHT AROUND FREEZING AS WINDS TURN OUT OF THE SOUTHWEST
OVERNIGHT. HOWEVER...THIS WILL ALSO BE THE NIGHT WITH THE BEST
CHANCE TO RADIATE SO WATCH IS STILL WARRANTED.

WILL CONTINUE TO LEAN TOWARD THE ECMWF LATE WEEK AND NEXT WEEKEND
BASED ON ITS CONTINUITY.  THE CANADIAN GEM IS NOW SLOWER THAN THE
ECMWF AND THE GFS STILL LOOKS TOO PROGRESSIVE GIVEN HOW AMPLIFIED
THE PATTERN IS AT MIDWEEK.  HAVE BACKED OFF ON THE THE PRECIP CHANCE
EVEN MORE ON WEDNESDAY NIGHT AND ONLY HAVE SLIGHT CHANCES GOING OVER
CENTRAL MO.  HAVE UPPED POPS TO LIKELY POPS IN THE SOUTHERN COUNTIES
ON THURSDAY WHERE THERE WILL BE DECENT LOW LEVEL CONVERGENCE AND
LARGE SCALE ASCENT AND CONTINUED CHANCE POPS AREAWIDE ON THURSDAY
NIGHT. HAVE ALSO LEFT CHANCE OF RAIN GOING OVER THE ERN HALF OF
THE CWA ON FRIDAY AS MID LEVEL TROUGH WILL STILL BE OVER MID MO AT
12Z...THEN DRY THROUGH THE WEEKEND AS A RIDGE BUILDS IN.
TEMPERATURES ARE BASED ON HPC.

BRITT

&&

.AVIATION...
/1156 AM CDT SUN APR 5 2009/
FOR THE 18Z TAFS...SFC LOW JUST N OF STL ATTM WITH CDFNT EXTDG S
TO JUST E OF UNO. AS SFC LOW AND TRAILING CDFNT MOVE E OF
UIN...STL AND SUS THE SFC WND WILL SHIFT TO A N-NWLY DIRECTION IN
UIN AND TO A W-SWLY DIRECTION IN STL/SUS AND STRENGTHEN AND BCM
GUSTY THRU THE AFTN HRS. THE SFC WND SHOULD EVENTUALLY BCM NWLY AT
ALL TAF SITES BY LT AFTN WITH GUSTS TO NR 30 KTS. AREA OF RAIN/SNOW
OVER NWRN MO ASSOCIATED WITH MID LVL LOW WILL SHIFT EWD THRU THE
CWA LTR THIS AFTN INTO THE EARLY EVNG. LGT RAIN WILL MOVE INTO
THE TAF SITES BY LT AFTN CHANGING TO LGT SNOW IN UIN AND COU ARND
00Z MON...AND IN STL/SUS ARND 03Z MON BASED ON FORECAST SOUNDINGS
AND PARTIAL THICKNESS FCSTS. CLOUD HGTS HAVE DROPPED INTO THE MVFR
CATAGORY IN COU AND THIS POST FRONTAL STRATUS CLOUDS WILL ADVCT
INTO UIN EARLY THIS AFTN...AND INTO STL AND SUS BY LT AFTN WITH
THE CEILINGS EVENTUALLY DROPPING TO ARND 1000 FT IN COU AND UIN LTR
THIS AFTN AND IN STL AND SUS BY EARLY EVNG. STG AND GUSTY NWLY SFC
WNDS WILL CONT THRU THE NGT AND INTO MON MRNG. THE CIG HGTS WILL
SLOWLY RISE TO ARND 2000 FT BY MID-LT MRNG. SNOW SHOWERS OR
FLURRIES ARE POSSIBLE MON MRNG...BUT WILL LEAVE THE TAFS DRY AT
THIS TIME PD FOR NOW WITH LGT SNOW OR FLURRIES ENDING LT TGT IN
THE CURRENT TAFS.

GKS

&&

.LSX WATCHES/WARNINGS/ADVISORIES...
MO...FREEZE WATCH FROM LATE TUESDAY 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.

     FREEZE WARNING FROM 1 AM TO 9 AM CDT MONDAY FOR AUDRAIN-BOONE-
     CALLAWAY-COLE-CRAWFORD-FRANKLIN-GASCONADE-IRON-JEFFERSON-
     LINCOLN-MONITEAU-MONTGOMERY-OSAGE-REYNOLDS-ST. CHARLES-ST.
     LOUIS-ST. LOUIS CITY-WARREN-WASHINGTON.

     FREEZE WARNING FROM 9 PM MONDAY TO 9 AM CDT TUESDAY 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 TUESDAY 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.

     FREEZE WARNING FROM 1 AM TO 9 AM CDT MONDAY FOR BOND IL-CALHOUN
     IL-JERSEY IL-MADISON IL-MONROE IL-ST. CLAIR IL.

     FREEZE WARNING FROM 9 PM MONDAY TO 9 AM CDT TUESDAY 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, Apr 5, 5:25 AM CDT, 10 hours before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
525 AM CDT SUN APR 5 2009

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-061200-
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-
525 AM CDT SUN APR 5 2009

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

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS UNTIL LATE THIS
AFTERNOON FOR PARTS OF SOUTH CENTRAL AND SOUTHWESTERN ILLINOIS...
WHERE A FEW STORMS WILL BE CAPABLE OF PRODUCING QUARTER SIZE HAIL
AND DAMAGING WIND GUSTS. ELSEWHERE ACROSS PARTS OF EAST CENTRAL
AND SOUTHEAST MISSOURI...EXPECT SCATTERED THUNDERSTORMS MAINLY
DURING THE MORNING HOURS.

WEST AND NORTHWEST WINDS WILL GUST TO 40 MPH LATE THIS AFTERNOON
AND TONIGHT.

SNOW WILL BE LIKELY ACROSS THE MUCH OF THE AREA TONIGHT...
ESPECIALLY FOR AREAS NORTH OF INTERSTATE 70. LITTLE IF ANY SNOW
ACCUMULATION IS EXPECTED...ALTHOUGH SOME SPOTS IN NORTHEAST
MISSOURI AND WEST CENTRAL ILLINOIS MAY SEE CLOSE TO AN INCH.

LOW TEMPERATURES ARE EXPECTED TO FALL INTO THE UPPER 20S TO AROUND
30 DEGREES OVER PARTS OF CENTRAL...EAST CENTRAL...AND SOUTHEAST
MISSOURI...AS WELL AS CALHOUN AND GREEN COUNTIES IN ILLINOIS. THIS
WILL LIKELY CAUSE HARM TO ANY VEGETATION THAT HAS ALREADY STARTED
TO GROW. A FREEZE WARNING HAS BEEN ISSUED FOR THESE AREAS. FOR
FURTHER INFORMATION...PLEASE REFER TO THE WARNING PRODUCT.

ELSEWHERE WHERE THE GROWING SEASON HAS BEGUN...WHICH INCLUDES
PARTS OF SOUTHEAST MISSOURI AND SOUTHERN ILLINOIS...LOW
TEMPERATURES TONIGHT WILL BE IN THE LOWER 30S. A FREEZE WATCH
REMAINS IN EFFECT FOR THESE AREAS. FOR FURTHER INFORMATION...
PLEASE REFER TO THE WATCH PRODUCT.

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...MONDAY THROUGH SATURDAY

SCATTERED SNOW SHOWERS ARE EXPECTED OVER MUCH OF THE AREA ON
MONDAY. LITTLE IF ANY SNOW ACCUMULATION IS EXPECTED.

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

THE NEXT STORM SYSTEM WILL BRING A CHANCE FOR 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 POSSIBLE OVER PORTIONS OF SOUTHWEST AND
SOUTH CENTRAL ILLINOIS UNTIL LATE THIS AFTERNOON.

&&

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

TES

In the hours before

Local storm report, Apr 5, 10:18 AM CDT, 5 hours 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1018 AM CDT SUN APR 05 2009

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST.. ...SOURCE....
            ..REMARKS..

1017 AM     HAIL             BONNE TERRE             37.92N  90.55W
04/05/2009  E0.70 INCH       ST. FRANCOIS       MO   TRAINED SPOTTER

&&

EVENT NUMBER LSX0901707

GKS
Local storm report, Apr 5, 10:22 AM CDT, 5 hours 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1022 AM CDT SUN APR 05 2009

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST.. ...SOURCE....
            ..REMARKS..

1015 AM     HAIL             BONNE TERRE             37.92N  90.55W
04/05/2009  E1.00 INCH       ST. FRANCOIS       MO   TRAINED SPOTTER

&&

EVENT NUMBER LSX0901708

GKS
Local storm report, Apr 5, 11:12 AM CDT, 4 hours 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1112 AM CDT SUN APR 05 2009

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST.. ...SOURCE....
            ..REMARKS..

1054 AM     HAIL             NEW ATHENS              38.32N  89.88W
04/05/2009  M0.25 INCH       ST. CLAIR          IL   TRAINED SPOTTER

            REPORTS OF PEA SIZE HAIL COVERING THE GROUND.

&&

EVENT NUMBER LSX0901709

DYE
Local storm report, Apr 5, 11:17 AM CDT, 4 hours 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1117 AM CDT SUN APR 05 2009

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST.. ...SOURCE....
            ..REMARKS..

1114 AM     HAIL             NEW BADEN               38.54N  89.70W
04/05/2009  M0.25 INCH       CLINTON            IL   TRAINED SPOTTER

&&

EVENT NUMBER LSX0901710

DYE
Local storm report, Apr 5, 11:25 AM CDT, 4 hours before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1125 AM CDT SUN APR 05 2009

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST.. ...SOURCE....
            ..REMARKS..

1125 AM     HAIL             CARLYLE                 38.62N  89.37W
04/05/2009  E0.50 INCH       CLINTON            IL   TRAINED SPOTTER

&&

EVENT NUMBER LSX0901712

GKS
Local storm report, Apr 5, 12:18 PM CDT, 3 hours 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1218 PM CDT SUN APR 05 2009

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST.. ...SOURCE....
            ..REMARKS..

1214 PM     HAIL             BARTELSO                38.54N  89.47W
04/05/2009  M0.70 INCH       CLINTON            IL   TRAINED SPOTTER

&&

EVENT NUMBER LSX0901713

DYE

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 5, 4:35 AM CDTFreeze WarningLSXAudrain, Boone, Callaway, Cole, Crawford, Franklin and 13 more28 hr
Apr 5, 8:21 AM CDTSevere Thunderstorm WarningLSXJefferson, Saint Francois, Washington24 min
Apr 5, 10:00 AM CDTSevere Thunderstorm WarningLSXJefferson, Sainte Genevieve, Saint Francois, Washington45 min
Apr 5, 7:38 AM CDTSevere Thunderstorm WarningLSXRandolph37 min
Apr 5, 7:54 AM CDTSevere Thunderstorm WarningLSXWashington36 min
Apr 5, 9:07 AM CDTSevere Thunderstorm WarningLSXRandolph, Saint Clair, Washington38 min
Apr 5, 10:27 AM CDTSevere Thunderstorm WarningLSXMonroe, Randolph, Saint Clair26 min
Apr 5, 11:13 AM CDTSevere Thunderstorm WarningLSXClinton20 min

Nearby

Freeze Warnings in Missouri, 2009Freeze Warnings in Illinois, 2009Every freeze warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.