Alert archive / Missouri / Winter Storm Watches in 2007

Winter Storm Watch 3, NWS St. Louis, MO

February 11, 200716 counties in Missouri; 11 counties in Illinois

NWS St. Louis, MO issued this winter storm watch at Feb 11, 2007, 4:08 AM CST for 16 counties in Missouri; 11 counties in Illinois. It took effect at Feb 11, 2007, 3:54 PM CST. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued
Feb 11, 2007, 4:08 AM CST (10:08 UTC)
In effect from
Feb 11, 2007, 3:54 PM CST
Expired
Feb 12, 2007, 4:57 AM CST
In force
13 hr
Issued by
NWS St. Louis, MO
All 27 counties

Adams County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Fayette County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Montgomery County, IL, Pike County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, City of Saint Louis, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Marion County, MO, Monroe County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO, Saint Charles County, MO, Saint Louis County, MO, Shelby County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 68 km from the middle of the area, began a volume at 10:07 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 00:00Z, 10.1 hours before the alert went out and 222 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 00:00Z on 2007-02-11Temperature 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 00:00Z on 2007-02-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.1939587897Sfc1 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
1527 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
130 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 
WWUS43 KLSX 111008
WSWLSX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
408 AM CST SUN FEB 11 2007

ILZ058>060-065-095>097-MOZ018-019-027-112215-
/O.NEW.KLSX.WS.A.0003.070212T1200Z-070213T1800Z/
GREENE IL-MACOUPIN IL-MONTGOMERY IL-FAYETTE IL-ADAMS IL-BROWN IL-
PIKE IL-KNOX-LEWIS-MARION-
INCLUDING THE CITIES OF...LITCHFIELD...VANDALIA...QUINCY...
HANNIBAL
408 AM CST SUN FEB 11 2007

...WINTER STORM WATCH IN EFFECT FROM MONDAY MORNING THROUGH
TUESDAY MORNING...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM MONDAY MORNING THROUGH
TUESDAY MORNING. 

A WINTER STORM IS EXPECTED TO DEVELOP OVER THE SOUTHERN PLAINS AND
MOVE NORTHEAST THROUGH THE LOWER MISSISSIPPI VALLEY INTO TENNESSEE
BY TUESDAY MORNING. THIS STORM WILL SPREAD WINTRY PRECIPITATION
ACROSS THE AREA BEGINNING MONDAY MORNING. SNOWFALL ACROSS WEST
CENTRAL ILLINOIS AND NORTHEAST MISSOURI COULD EXCEED 6 INCHES BY
THE TIME THE SNOW STOPS ON TUESDAY MORNING. FURTHER SOUTHEAST...IN
SOUTHWEST ILLINOIS A MIXTURE OF SLEET AND SNOW WILL BE POSSIBLE.
WHILE SNOWFALL TOTALS MAY NOT BE AS HIGH AS WEST CENTRAL
ILLINOIS...ADDITION OF A SLEET MIXTURE COULD MAKE CONDITIONS JUST
AS HAZARDOUS.

A WINTER STORM WATCH IS ADVANCED NOTICE THAT SEVERE WINTER
WEATHER IS POSSIBLE IN THE WATCH AREA...IT DOES NOT MEAN IT IS A
CERTAINTY. THOSE IN THE WATCH AREA SHOULD BEGIN PREPARING IN CASE
THE STORM DOES MATERIALIZE. IF YOU HAVE TRAVEL PLANNED...YOU MAY
WANT TO ADJUST YOUR TRAVEL TIME TO AVOID THE STORM. ALSO...YOU
SHOULD USE THIS ADVANCED NOTICE TO MAKE CERTAIN YOUR VEHICLE IS
WINTERIZED. MAKE PREPARATIONS AT HOME BY STOCKING EMERGENCY
SUPPLIES...SUCH AS FOOD...MEDICINE...AND EXTRA HEATING FUEL...
JUST IN CASE THE STORM MAKES TRAVEL IMPOSSIBLE. THIS IS
ESPECIALLY IMPORTANT FOR THOSE LIVING IN RURAL AREAS.

$$

CARNEY
3 follow-up statements
000 
WWUS43 KLSX 112154
WSWLSX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
354 PM CST SUN FEB 11 2007

...WINTER STORM TAKING AIM ON MISSOURI AND ILLINOIS...

.A WINTER STORM IS EXPECTED TO DEVELOP OVER THE SOUTHERN PLAINS
AND MOVE NORTHEAST THROUGH THE LOWER MISSISSIPPI VALLEY INTO
TENNESSEE BY TUESDAY AFTERNOON. THIS STORM WILL SPREAD WINTRY
PRECIPITATION ACROSS THE AREA BEGINNING MONDAY MORNING. AS THE
STORM SYSTEM DEEPENS AND BRINGS COLDER AIR SOUTH...A WINTRY MIX
OF PRECIPITATION WILL BECOME ALL SNOW BY TUESDAY MORNING. SNOWFALL
COULD EXCEED 6 INCHES ALONG AND NORTH OF INTERSTATE 70 BY LATE
TUESDAY MORNING.

THERE IS STILL SOME UNCERTAINTY TO THE EXACT TRACK OF THIS WINTER
STORM WHICH ULTIMATELY WILL DETERMINE WHERE THE HEAVIEST SNOWFALL
WILL OCCUR MONDAY NIGHT AND TUESDAY MORNING. THOSE WITH TRAVEL
PLANS ACROSS MISSOURI AND ILLINOIS SHOULD STAY TUNED TO THE LATEST
FORECASTS AND STATEMENTS FROM THE NATIONAL WEATHER SERVICE.

ILZ064-098>100-MOZ034>036-041-042-050>052-060-061-063-064-121100-
/O.NEW.KLSX.ZR.Y.0002.070212T1200Z-070212T1800Z/
/O.EXB.KLSX.WS.A.0003.070213T0000Z-070213T1800Z/
BOND IL-CALHOUN IL-JERSEY IL-MADISON IL-MONROE-RALLS-PIKE-BOONE-
AUDRAIN-CALLAWAY-MONTGOMERY-LINCOLN-WARREN-ST. CHARLES-ST. LOUIS-
ST. LOUIS CITY-
INCLUDING THE CITIES OF...EDWARDSVILLE...BOWLING GREEN...
COLUMBIA...MEXICO...ST CHARLES...ST LOUIS
354 PM CST SUN FEB 11 2007

...FREEZING RAIN ADVISORY IN EFFECT FROM 6 AM TO 12 PM CST
MONDAY...
...WINTER STORM WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY MORNING...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FREEZING
RAIN ADVISORY...WHICH IS IN EFFECT FROM 6 AM TO 12 PM CST MONDAY.
A WINTER STORM WATCH HAS ALSO BEEN ISSUED. THIS WINTER STORM
WATCH IS IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY MORNING. 

GROUND TEMPERATURES REMAIN WELL BELOW FREEZING DUE TO THE
PRELONGED PERIOD OF COLD WEATHER THAT HAS BEEN EXPERIENCED. AS
RAIN BEGINS TO DEVELOP MONDAY MORNING ACROSS THE AREA IT IS
EXPECTED TO FREEZE TO THE SURFACE. MINOR ICE ACCUMULATIONS OR
GLAZING IS EXPECTED MONDAY MORNING BEFORE TEMPERATURES WARM ABOVE
FREEZING.

THE RAIN IS EXPECTED TO MIX WITH SLEET AND SNOW LATE MONDAY
EVENING AND BECOME ALL SNOW BY TUESDAY MORNING. SIGNIFICANT SNOW
ACCUMULATIONS OF 6 OR MORE INCHES WILL BE POSSIBLE ALONG AND NORTH
OF INTERSTATE 70.

A WINTER STORM WATCH IS ADVANCED NOTICE THAT SEVERE WINTER
WEATHER IS POSSIBLE IN THE WATCH AREA...IT DOES NOT MEAN IT IS A
CERTAINTY. THOSE IN THE WATCH AREA SHOULD BEGIN PREPARING IN CASE
THE STORM DOES MATERIALIZE. IF YOU HAVE TRAVEL PLANNED...YOU MAY
WANT TO ADJUST YOUR TRAVEL TIME TO AVOID THE STORM. ALSO...YOU
SHOULD USE THIS ADVANCED NOTICE TO MAKE CERTAIN YOUR VEHICLE IS
WINTERIZED. MAKE PREPARATIONS AT HOME BY STOCKING EMERGENCY
SUPPLIES...SUCH AS FOOD...MEDICINE...AND EXTRA HEATING FUEL...
JUST IN CASE THE STORM MAKES TRAVEL IMPOSSIBLE. THIS IS
ESPECIALLY IMPORTANT FOR THOSE LIVING IN RURAL AREAS.

A FREEZING RAIN ADVISORY IS ISSUED WHEN LESS THAN ONE-QUARTER
INCH OF ICE IS EXPECTED TO ACCUMULATE ON UNTREATED SURFACES...
SUCH AS SIDEWALKS...DRIVEWAYS...ROADS AND PARKING LOTS. PLAN FOR
A SLOW TRIP...AND USE SPECIAL CAUTION WHEN APPROACHING BRIDGES
AND CURVES. REMEMBER THAT ICE DEPOSITED BY FREEZING RAIN IS OFTEN
DIFFICULT TO SEE...SO DO NOT BE CAUGHT OFF GUARD.

$$

ILZ058>060-065-121100-
/O.NEW.KLSX.ZR.Y.0002.070212T1200Z-070212T1800Z/
/O.EXT.KLSX.WS.A.0003.070213T0000Z-070213T1800Z/
GREENE IL-MACOUPIN IL-MONTGOMERY IL-FAYETTE IL-
INCLUDING THE CITIES OF...LITCHFIELD...VANDALIA
354 PM CST SUN FEB 11 2007

...FREEZING RAIN ADVISORY IN EFFECT FROM 6 AM TO 12 PM CST
MONDAY...
...WINTER STORM WATCH NOW IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY MORNING...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FREEZING
RAIN ADVISORY...WHICH IS IN EFFECT FROM 6 AM TO 12 PM CST MONDAY.
THE WINTER STORM WATCH IS NOW IN EFFECT FROM MONDAY EVENING
THROUGH TUESDAY MORNING. 

GROUND TEMPERATURES REMAIN WELL BELOW FREEZING DUE TO THE
PRELONGED PERIOD OF COLD WEATHER THAT HAS BEEN EXPERIENCED. AS
RAIN BEGINS TO DEVELOP MONDAY MORNING ACROSS THE AREA IT IS
EXPECTED TO FREEZE ON CONTACT. MINOR ICE ACCUMULATIONS OR GLAZING
IS EXPECTED MONDAY MORNING BEFORE TEMPERATURES WARM ABOVE
FREEZING DURING THE AFTERNOON.

THE RAIN IS EXPECTED TO MIX WITH SLEET AND SNOW LATE MONDAY
EVENING...BECOMING ALL SNOW BY TUESDAY MORNING. SIGNIFICANT SNOW
ACCUMULATIONS OF 6 OR MORE INCHES WILL BE POSSIBLE ALONG AND NORTH
OF INTERSTATE 70.

A WINTER STORM WATCH IS ADVANCED NOTICE THAT SEVERE WINTER
WEATHER IS POSSIBLE IN THE WATCH AREA...IT DOES NOT MEAN IT IS A
CERTAINTY. THOSE IN THE WATCH AREA SHOULD BEGIN PREPARING IN CASE
THE STORM DOES MATERIALIZE. IF YOU HAVE TRAVEL PLANNED...YOU MAY
WANT TO ADJUST YOUR TRAVEL TIME TO AVOID THE STORM. ALSO...YOU
SHOULD USE THIS ADVANCED NOTICE TO MAKE CERTAIN YOUR VEHICLE IS
WINTERIZED. MAKE PREPARATIONS AT HOME BY STOCKING EMERGENCY
SUPPLIES...SUCH AS FOOD...MEDICINE...AND EXTRA HEATING FUEL...
JUST IN CASE THE STORM MAKES TRAVEL IMPOSSIBLE. THIS IS
ESPECIALLY IMPORTANT FOR THOSE LIVING IN RURAL AREAS.

A FREEZING RAIN ADVISORY IS ISSUED WHEN LESS THAN ONE-QUARTER
INCH OF ICE IS EXPECTED TO ACCUMULATE ON UNTREATED SURFACES...
SUCH AS SIDEWALKS...DRIVEWAYS...ROADS AND PARKING LOTS. PLAN FOR
A SLOW TRIP...AND USE SPECIAL CAUTION WHEN APPROACHING BRIDGES
AND CURVES. REMEMBER THAT ICE DEPOSITED BY FREEZING RAIN IS OFTEN
DIFFICULT TO SEE...SO DO NOT BE CAUGHT OFF GUARD.

$$

ILZ095>097-MOZ018-019-027-121100-
/O.NEW.KLSX.WW.Y.0004.070212T1200Z-070213T0000Z/
/O.EXT.KLSX.WS.A.0003.070213T0000Z-070213T1800Z/
ADAMS IL-BROWN IL-PIKE IL-KNOX-LEWIS-MARION-
INCLUDING THE CITIES OF...QUINCY...HANNIBAL
354 PM CST SUN FEB 11 2007

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 6 PM CST
MONDAY...
...WINTER STORM WATCH NOW IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY MORNING...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WINTER
WEATHER ADVISORY...WHICH IS IN EFFECT FROM 6 AM TO 6 PM CST
MONDAY. THE WINTER STORM WATCH IS NOW IN EFFECT FROM MONDAY
EVENING THROUGH TUESDAY MORNING. 

A MIXTURE OF FREEZING RAIN...SLEET...AND SNOW IS EXPECTED ON
MONDAY. MINOR SNOW AND ICE ACCUMULATION IS LIKELY. 

THE WINTRY MIX WILL BECOME ALL SNOW MONDAY EVENING...WITH 6 OR
MORE INCHES OF SNOW ACCUMULATION IS POSSIBLE BY TUESDAY AFTERNOON.

A WINTER STORM WATCH IS ADVANCED NOTICE THAT SEVERE WINTER
WEATHER IS POSSIBLE IN THE WATCH AREA...IT DOES NOT MEAN IT IS A
CERTAINTY. THOSE IN THE WATCH AREA SHOULD BEGIN PREPARING IN CASE
THE STORM DOES MATERIALIZE. IF YOU HAVE TRAVEL PLANNED...YOU MAY
WANT TO ADJUST YOUR TRAVEL TIME TO AVOID THE STORM. ALSO...YOU
SHOULD USE THIS ADVANCED NOTICE TO MAKE CERTAIN YOUR VEHICLE IS
WINTERIZED. MAKE PREPARATIONS AT HOME BY STOCKING EMERGENCY
SUPPLIES...SUCH AS FOOD...MEDICINE...AND EXTRA HEATING FUEL...
JUST IN CASE THE STORM MAKES TRAVEL IMPOSSIBLE. THIS IS
ESPECIALLY IMPORTANT FOR THOSE LIVING IN RURAL AREAS.

A WINTER WEATHER ADVISORY IS ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS...SUCH AS SNOW...BLOWING SNOW...SLEET...OR
FREEZING DRIZZLE AND RAIN. IT ONLY TAKES A SMALL AMOUNT OF WINTRY
PRECIPITATION TO MAKE ROADS...BRIDGES...SIDEWALKS...AND PARKING
LOTS ICY AND DANGEROUS. IT IS OFTEN DIFFICULT TO TELL WHEN ICE
BEGINS TO FORM...SO DO NOT BE CAUGHT OFF GUARD.

$$

MOZ026-121100-
/O.NEW.KLSX.WW.Y.0004.070212T1200Z-070213T0000Z/
/O.EXB.KLSX.WS.A.0003.070213T0000Z-070213T1800Z/
SHELBY-
354 PM CST SUN FEB 11 2007

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 6 PM CST
MONDAY...
...WINTER STORM WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY MORNING...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WINTER
WEATHER ADVISORY...WHICH IS IN EFFECT FROM 6 AM TO 6 PM CST
MONDAY. A WINTER STORM WATCH HAS ALSO BEEN ISSUED. THIS WINTER
STORM WATCH IS IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY
MORNING. 

A MIXTURE OF FREEZING RAIN...SLEET...AND SNOW IS EXPECTED ON
MONDAY. MINOR SNOW AND ICE ACCUMULATION IS LIKELY. 

THE WINTRY MIX WILL BECOME ALL SNOW MONDAY EVENING...WITH 6 OR
MORE INCHES OF SNOW ACCUMULATION IS POSSIBLE BY TUESDAY AFTERNOON.

A WINTER STORM WATCH IS ADVANCED NOTICE THAT SEVERE WINTER
WEATHER IS POSSIBLE IN THE WATCH AREA...IT DOES NOT MEAN IT IS A
CERTAINTY. THOSE IN THE WATCH AREA SHOULD BEGIN PREPARING IN CASE
THE STORM DOES MATERIALIZE. IF YOU HAVE TRAVEL PLANNED...YOU MAY
WANT TO ADJUST YOUR TRAVEL TIME TO AVOID THE STORM. ALSO...YOU
SHOULD USE THIS ADVANCED NOTICE TO MAKE CERTAIN YOUR VEHICLE IS
WINTERIZED. MAKE PREPARATIONS AT HOME BY STOCKING EMERGENCY
SUPPLIES...SUCH AS FOOD...MEDICINE...AND EXTRA HEATING FUEL...
JUST IN CASE THE STORM MAKES TRAVEL IMPOSSIBLE. THIS IS
ESPECIALLY IMPORTANT FOR THOSE LIVING IN RURAL AREAS.

A WINTER WEATHER ADVISORY IS ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS...SUCH AS SNOW...BLOWING SNOW...SLEET...OR
FREEZING DRIZZLE AND RAIN. IT ONLY TAKES A SMALL AMOUNT OF WINTRY
PRECIPITATION TO MAKE ROADS...BRIDGES...SIDEWALKS...AND PARKING
LOTS ICY AND DANGEROUS. IT IS OFTEN DIFFICULT TO TELL WHEN ICE
BEGINS TO FORM...SO DO NOT BE CAUGHT OFF GUARD.

$$

CVKING
000 
WWUS43 KLSX 121007
WSWLSX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
407 AM CST MON FEB 12 2007

...WINTER STORM TAKING SHAPE FOR PARTS OF MISSOURI AND
ILLINOIS...

.THE LATEST FORECAST MAPS CONTINUE TO INDICATE THAT A WINTER STORM
WILL BE AFFECTING PARTS OF MISSOURI AND ILLINOIS TONIGHT AND INTO
TUESDAY MORNING...PRIMARILY FOR THOSE AREAS ALONG AND NORTH OF THE
MISSISSIPPI RIVER IN MISSOURI...AND ALONG AND NORTH OF INTERSTATE
70 IN ILLINOIS.

THE INITIAL SURGE OF MOISTURE WITH THIS SYSTEM IS OCCURRING A BIT
SLOWER THAN EARLIER EXPECTED. SO ALTHOUGH SOME LIGHT
RAIN...SNOW...OR SLEET WILL BE POSSIBLE LATER THIS MORNING AND
THIS AFTERNOON...THE MOST ADVERSE WINTER WEATHER WILL OCCUR
TONIGHT AND INTO TUESDAY MORNING.

THE HEAVIEST SNOW ACCUMULATIONS WILL OCCUR FROM EXTREME NORTHEAST
MISSOURI TO SOUTHERN ILLINOIS...GENERALLY ALONG AND NORTH OF AN
EDINA...VANDALIA LINE...WHERE 6 TO 9 INCHES OF SNOW WILL BE
POSSIBLE. SNOWFALL AMOUNTS WILL TAPER OFF AS YOU HEAD SOUTH OF
THIS LINE...WITH ACCUMULATIONS OF 3 TO 6 INCHES ALONG THE I-70
CORRIDOR.

THE TEMPERATURE PROFILE OF THE ATMOSPHERE WILL CAUSE DRAMATIC
CHANGES IN CONDITIONS OVER A VERY SHORT DISTANCE.  THOSE WITH
TRAVEL PLANS ACROSS MISSOURI AND ILLINOIS SHOULD STAY TUNED TO THE
LATEST FORECASTS AND STATEMENTS FROM THE NATIONAL WEATHER SERVICE.

ILZ058>060-064-065-098-099-MOZ035-036-122215-
/O.CAN.KLSX.ZR.Y.0002.070212T1200Z-070212T1800Z/
/O.UPG.KLSX.WS.A.0003.070213T0000Z-070213T1800Z/
/O.NEW.KLSX.WS.W.0002.070213T0000Z-070213T1800Z/
GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CALHOUN IL-
JERSEY IL-RALLS-PIKE-
INCLUDING THE CITIES OF...LITCHFIELD...VANDALIA...BOWLING GREEN
407 AM CST MON FEB 12 2007

...FREEZING RAIN ADVISORY IS CANCELLED...
...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 12 PM
CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY. THE FREEZING RAIN ADVISORY HAS BEEN CANCELLED.
THE WINTER STORM WATCH IS NO LONGER IN EFFECT. 

THE PRECIPITATION WITH THE APPROACHING WINTER STORM IS MOVING A
BIT SLOWER THAN EARLIER EXPECTED...THEREFORE THE FREEZING RAIN
ADVISORY HAS BEEN CANCELLED. 

HOWEVER...THE WINTER STORM IS STILL HEADING OUR WAY. A MIX OF
LIGHT RAIN OR SNOW WILL DEVELOP THIS AFTERNOON...BUT BY TONIGHT
THE PRECIPITATION WILL BECOME ALL SNOW AND IT WILL BECOME HEAVY.
TOTAL SNOW ACCUMULATIONS OF 6 TO 9 INCHES ARE EXPECTED BY THE
TIME THE STORM WINDS DOWN BY MIDDAY TUESDAY.

A WINTER STORM WARNING MEANS THAT A SIGNIFICANT AMOUNT OF SNOW...
SLEET AND/OR ICE IS EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

ILZ095>097-MOZ018-019-027-122215-
/O.CAN.KLSX.WW.Y.0004.070212T1200Z-070213T0000Z/
/O.UPG.KLSX.WS.A.0003.070213T0000Z-070213T1800Z/
/O.NEW.KLSX.WS.W.0002.070213T0000Z-070213T1800Z/
ADAMS IL-BROWN IL-PIKE IL-KNOX-LEWIS-MARION-
INCLUDING THE CITIES OF...QUINCY...HANNIBAL
407 AM CST MON FEB 12 2007

...WINTER WEATHER ADVISORY IS CANCELLED...
...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 12 PM
CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY. THE WINTER WEATHER ADVISORY HAS BEEN
CANCELLED. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. 

THE PRECIPITATION WITH THE APPROACHING WINTER STORM IS MOVING A
BIT SLOWER THAN EARLIER EXPECTED...THEREFORE THE WINTER WEATHER
ADVISORY FOR TODAY HAS BEEN CANCELLED. 

HOWEVER...THE WINTER STORM IS STILL HEADING OUR WAY. A BIT OF
LIGHT SNOW OR RAIN WILL DEVELOP THIS AFTERNOON...BUT BY TONIGHT
THE PRECIPITATION WILL BECOME ALL SNOW AND IT WILL BECOME HEAVY.
TOTAL SNOW ACCUMULATIONS OF 6 TO 9 INCHES ARE EXPECTED BY THE TIME
THE STORM WINDS DOWN BY MIDDAY TUESDAY.

A WINTER STORM WARNING MEANS THAT A SIGNIFICANT AMOUNT OF SNOW...
SLEET AND/OR ICE IS EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

ILZ100-MOZ034-041-042-050>052-060-061-063-064-122215-
/O.CAN.KLSX.ZR.Y.0002.070212T1200Z-070212T1800Z/
/O.UPG.KLSX.WS.A.0003.070213T0000Z-070213T1800Z/
/O.NEW.KLSX.WW.Y.0005.070213T0000Z-070213T1800Z/
MADISON IL-MONROE-BOONE-AUDRAIN-CALLAWAY-MONTGOMERY-LINCOLN-
WARREN-ST. CHARLES-ST. LOUIS-ST. LOUIS CITY-
INCLUDING THE CITIES OF...EDWARDSVILLE...COLUMBIA...MEXICO...
ST CHARLES...ST LOUIS
407 AM CST MON FEB 12 2007

...FREEZING RAIN ADVISORY IS CANCELLED...
...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WINTER
WEATHER ADVISORY...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY. THE FREEZING RAIN ADVISORY HAS BEEN CANCELLED.
THE WINTER STORM WATCH IS NO LONGER IN EFFECT. 

THE PRECIPITATION WITH THE APPROACHING WINTER STORM IS MOVING A
BIT SLOWER THAN EARLIER EXPECTED...THEREFORE THE FREEZING RAIN
ADVISORY HAS BEEN CANCELLED. 

HOWEVER...THE WINTER STORM IS STILL HEADING OUR WAY. A MIX OF
LIGHT RAIN OR SNOW WILL DEVELOP LATER THIS MORNING AND THIS AFTERNOON...
BUT BY TONIGHT THE PRECIPITATION BECOME MIXED WITH SLEET...AND
THEN CHANGE TO ALL SNOW. TOTAL SNOW ACCUMULATIONS OF 3 TO 6
INCHES ARE EXPECTED BY THE TIME THE STORM WINDS DOWN BY MIDDAY
TUESDAY.

A WINTER WEATHER ADVISORY IS ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS...SUCH AS SNOW...BLOWING SNOW...SLEET...OR
FREEZING DRIZZLE AND RAIN. IT ONLY TAKES A SMALL AMOUNT OF WINTRY
PRECIPITATION TO MAKE ROADS...BRIDGES...SIDEWALKS...AND PARKING
LOTS ICY AND DANGEROUS. IT IS OFTEN DIFFICULT TO TELL WHEN ICE
BEGINS TO FORM...SO DO NOT BE CAUGHT OFF GUARD.

$$

MOZ026-122215-
/O.CAN.KLSX.WW.Y.0004.070212T1200Z-070213T0000Z/
/O.UPG.KLSX.WS.A.0003.070213T0000Z-070213T1800Z/
/O.NEW.KLSX.WW.Y.0005.070213T0000Z-070213T1800Z/
SHELBY-
407 AM CST MON FEB 12 2007

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WINTER
WEATHER ADVISORY...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

THE PRECIPITATION WITH THE APPROACHING WINTER STORM IS MOVING A
BIT SLOWER THAN EARLIER EXPECTED...THEREFORE THE WINTER WEATHER
ADVISORY FOR TODAY HAS BEEN CANCELLED. 

HOWEVER...THE WINTER STORM IS STILL HEADING OUR WAY. A BIT OF
LIGHT SNOW OR RAIN WILL DEVELOP THIS AFTERNOON...BUT BY TONIGHT
THE PRECIPITATION WILL BECOME ALL SNOW AND IT WILL BECOME HEAVY.
TOTAL SNOW ACCUMULATIONS OF 4 TO 5 INCHES ARE EXPECTED BY THE TIME
THE STORM WINDS DOWN BY MIDDAY TUESDAY.

A WINTER WEATHER ADVISORY IS ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS...SUCH AS SNOW...BLOWING SNOW...SLEET...OR
FREEZING DRIZZLE AND RAIN. IT ONLY TAKES A SMALL AMOUNT OF WINTRY
PRECIPITATION TO MAKE ROADS...BRIDGES...SIDEWALKS...AND PARKING
LOTS ICY AND DANGEROUS. IT IS OFTEN DIFFICULT TO TELL WHEN ICE
BEGINS TO FORM...SO DO NOT BE CAUGHT OFF GUARD.

$$

ILZ069-070-074-101-102-MOZ059-062-065-122215-
/O.NEW.KLSX.WW.Y.0005.070213T0000Z-070213T1800Z/
CLINTON IL-MARION IL-WASHINGTON IL-ST. CLAIR IL-MONROE IL-
GASCONADE-FRANKLIN-JEFFERSON-
INCLUDING THE CITIES OF...SALEM...BELLEVILLE...UNION
407 AM CST MON FEB 12 2007

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WINTER
WEATHER ADVISORY...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY. 

A MIX OF LIGHT RAIN AND LIGHT SNOW WILL DEVELOP ACROSS THE AREA
TODAY. TONIGHT...COLDER AIR WILL CAUSE SLEET TO BE ADDED TO THIS
MIX...WITH THE PRECIPITATION CHANGING TO ALL SNOW AS THE NIGHT
PROGRESSES. TOTAL SNOW AND SLEET ACCUMULATIONS WILL BE IN THE 3 TO
6 INCH RANGE.

A WINTER WEATHER ADVISORY IS ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS...SUCH AS SNOW...BLOWING SNOW...SLEET...OR
FREEZING DRIZZLE AND RAIN. IT ONLY TAKES A SMALL AMOUNT OF WINTRY
PRECIPITATION TO MAKE ROADS...BRIDGES...SIDEWALKS...AND PARKING
LOTS ICY AND DANGEROUS. IT IS OFTEN DIFFICULT TO TELL WHEN ICE
BEGINS TO FORM...SO DO NOT BE CAUGHT OFF GUARD.

$$

TRUETT
000 
WWUS43 KLSX 121057 CCA
WSWLSX

URGENT - WINTER WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE ST LOUIS MO
456 AM CST MON FEB 12 2007

...WINTER STORM TAKING SHAPE FOR PARTS OF MISSOURI AND
ILLINOIS...

.THE LATEST FORECAST MAPS CONTINUE TO INDICATE THAT A WINTER STORM
WILL BE AFFECTING PARTS OF MISSOURI AND ILLINOIS TONIGHT AND INTO
TUESDAY MORNING...PRIMARILY FOR THOSE AREAS ALONG AND NORTH OF THE
MISSOURI RIVER IN MISSOURI...AND ALONG AND NORTH OF INTERSTATE
70 IN ILLINOIS.

THE INITIAL SURGE OF MOISTURE WITH THIS SYSTEM IS OCCURRING A BIT
SLOWER THAN EARLIER EXPECTED. SO ALTHOUGH SOME LIGHT
RAIN...SNOW...OR SLEET WILL BE POSSIBLE LATER THIS MORNING AND
THIS AFTERNOON...THE MOST ADVERSE WINTER WEATHER WILL OCCUR
TONIGHT AND INTO TUESDAY MORNING.

THE HEAVIEST SNOW ACCUMULATIONS WILL OCCUR FROM EXTREME NORTHEAST
MISSOURI TO SOUTHERN ILLINOIS...GENERALLY ALONG AND NORTH OF AN
EDINA...VANDALIA LINE...WHERE 6 TO 9 INCHES OF SNOW WILL BE
POSSIBLE. SNOWFALL AMOUNTS WILL TAPER OFF AS YOU HEAD SOUTH OF
THIS LINE...WITH ACCUMULATIONS OF 3 TO 6 INCHES ALONG THE I-70
CORRIDOR.

THE TEMPERATURE PROFILE OF THE ATMOSPHERE WILL CAUSE DRAMATIC
CHANGES IN CONDITIONS OVER A VERY SHORT DISTANCE.  THOSE WITH
TRAVEL PLANS ACROSS MISSOURI AND ILLINOIS SHOULD STAY TUNED TO THE
LATEST FORECASTS AND STATEMENTS FROM THE NATIONAL WEATHER SERVICE.

ILZ058>060-064-065-098-099-MOZ035-036-122315-
/O.CAN.KLSX.ZR.Y.0002.070212T1200Z-070212T1800Z/
/O.UPG.KLSX.WS.A.0003.070213T0000Z-070213T1800Z/
/O.NEW.KLSX.WS.W.0002.070213T0000Z-070213T1800Z/
GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CALHOUN IL-
JERSEY IL-RALLS-PIKE-
INCLUDING THE CITIES OF...LITCHFIELD...VANDALIA...BOWLING GREEN
456 AM CST MON FEB 12 2007

...FREEZING RAIN ADVISORY IS CANCELLED...
...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 12 PM
CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY. THE FREEZING RAIN ADVISORY HAS BEEN CANCELLED.
THE WINTER STORM WATCH IS NO LONGER IN EFFECT. 

THE PRECIPITATION WITH THE APPROACHING WINTER STORM IS MOVING A
BIT SLOWER THAN EARLIER EXPECTED...THEREFORE THE FREEZING RAIN
ADVISORY HAS BEEN CANCELLED. 

HOWEVER...THE WINTER STORM IS STILL HEADING OUR WAY. A MIX OF
LIGHT RAIN OR SNOW WILL DEVELOP THIS AFTERNOON...BUT BY TONIGHT
THE PRECIPITATION WILL BECOME ALL SNOW AND IT WILL BECOME HEAVY.
TOTAL SNOW ACCUMULATIONS OF 6 TO 9 INCHES ARE EXPECTED BY THE
TIME THE STORM WINDS DOWN BY MIDDAY TUESDAY.

A WINTER STORM WARNING MEANS THAT A SIGNIFICANT AMOUNT OF SNOW...
SLEET AND/OR ICE IS EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

ILZ095>097-MOZ018-019-027-122315-
/O.CAN.KLSX.WW.Y.0004.070212T1200Z-070213T0000Z/
/O.UPG.KLSX.WS.A.0003.070213T0000Z-070213T1800Z/
/O.NEW.KLSX.WS.W.0002.070213T0000Z-070213T1800Z/
ADAMS IL-BROWN IL-PIKE IL-KNOX-LEWIS-MARION-
INCLUDING THE CITIES OF...QUINCY...HANNIBAL
456 AM CST MON FEB 12 2007

...WINTER WEATHER ADVISORY IS CANCELLED...
...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 12 PM
CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY. THE WINTER WEATHER ADVISORY HAS BEEN
CANCELLED. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. 

THE PRECIPITATION WITH THE APPROACHING WINTER STORM IS MOVING A
BIT SLOWER THAN EARLIER EXPECTED...THEREFORE THE WINTER WEATHER
ADVISORY FOR TODAY HAS BEEN CANCELLED. 

HOWEVER...THE WINTER STORM IS STILL HEADING OUR WAY. A BIT OF
LIGHT SNOW OR RAIN WILL DEVELOP THIS AFTERNOON...BUT BY TONIGHT
THE PRECIPITATION WILL BECOME ALL SNOW AND IT WILL BECOME HEAVY.
TOTAL SNOW ACCUMULATIONS OF 6 TO 9 INCHES ARE EXPECTED BY THE TIME
THE STORM WINDS DOWN BY MIDDAY TUESDAY.

A WINTER STORM WARNING MEANS THAT A SIGNIFICANT AMOUNT OF SNOW...
SLEET AND/OR ICE IS EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

ILZ100-MOZ034-041-042-050>052-060-061-063-064-122315-
/O.CAN.KLSX.ZR.Y.0002.070212T1200Z-070212T1800Z/
/O.UPG.KLSX.WS.A.0003.070213T0000Z-070213T1800Z/
/O.NEW.KLSX.WW.Y.0005.070213T0000Z-070213T1800Z/
MADISON IL-MONROE-BOONE-AUDRAIN-CALLAWAY-MONTGOMERY-LINCOLN-
WARREN-ST. CHARLES-ST. LOUIS-ST. LOUIS CITY-
INCLUDING THE CITIES OF...EDWARDSVILLE...COLUMBIA...MEXICO...
ST CHARLES...ST LOUIS
456 AM CST MON FEB 12 2007

...FREEZING RAIN ADVISORY IS CANCELLED...
...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WINTER
WEATHER ADVISORY...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY. THE FREEZING RAIN ADVISORY HAS BEEN CANCELLED.
THE WINTER STORM WATCH IS NO LONGER IN EFFECT. 

THE PRECIPITATION WITH THE APPROACHING WINTER STORM IS MOVING A
BIT SLOWER THAN EARLIER EXPECTED...THEREFORE THE FREEZING RAIN
ADVISORY HAS BEEN CANCELLED. 

HOWEVER...THE WINTER STORM IS STILL HEADING OUR WAY. A MIX OF
LIGHT RAIN OR SNOW WILL DEVELOP LATER THIS MORNING AND THIS AFTERNOON...
BUT BY TONIGHT THE PRECIPITATION BECOME MIXED WITH SLEET...AND
THEN CHANGE TO ALL SNOW. TOTAL SNOW ACCUMULATIONS OF 3 TO 6
INCHES ARE EXPECTED BY THE TIME THE STORM WINDS DOWN BY MIDDAY
TUESDAY.

A WINTER WEATHER ADVISORY IS ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS...SUCH AS SNOW...BLOWING SNOW...SLEET...OR
FREEZING DRIZZLE AND RAIN. IT ONLY TAKES A SMALL AMOUNT OF WINTRY
PRECIPITATION TO MAKE ROADS...BRIDGES...SIDEWALKS...AND PARKING
LOTS ICY AND DANGEROUS. IT IS OFTEN DIFFICULT TO TELL WHEN ICE
BEGINS TO FORM...SO DO NOT BE CAUGHT OFF GUARD.

$$

MOZ026-122315-
/O.CAN.KLSX.WW.Y.0004.070212T1200Z-070213T0000Z/
/O.UPG.KLSX.WS.A.0003.070213T0000Z-070213T1800Z/
/O.NEW.KLSX.WW.Y.0005.070213T0000Z-070213T1800Z/
SHELBY-
456 AM CST MON FEB 12 2007

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WINTER
WEATHER ADVISORY...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

THE PRECIPITATION WITH THE APPROACHING WINTER STORM IS MOVING A
BIT SLOWER THAN EARLIER EXPECTED...THEREFORE THE WINTER WEATHER
ADVISORY FOR TODAY HAS BEEN CANCELLED. 

HOWEVER...THE WINTER STORM IS STILL HEADING OUR WAY. A BIT OF
LIGHT SNOW OR RAIN WILL DEVELOP THIS AFTERNOON...BUT BY TONIGHT
THE PRECIPITATION WILL BECOME ALL SNOW AND IT WILL BECOME HEAVY.
TOTAL SNOW ACCUMULATIONS OF 4 TO 5 INCHES ARE EXPECTED BY THE TIME
THE STORM WINDS DOWN BY MIDDAY TUESDAY.

A WINTER WEATHER ADVISORY IS ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS...SUCH AS SNOW...BLOWING SNOW...SLEET...OR
FREEZING DRIZZLE AND RAIN. IT ONLY TAKES A SMALL AMOUNT OF WINTRY
PRECIPITATION TO MAKE ROADS...BRIDGES...SIDEWALKS...AND PARKING
LOTS ICY AND DANGEROUS. IT IS OFTEN DIFFICULT TO TELL WHEN ICE
BEGINS TO FORM...SO DO NOT BE CAUGHT OFF GUARD.

$$

ILZ069-070-074-101-102-MOZ059-062-065-122315-
/O.NEW.KLSX.WW.Y.0005.070213T0000Z-070213T1800Z/
CLINTON IL-MARION IL-WASHINGTON IL-ST. CLAIR IL-MONROE IL-
GASCONADE-FRANKLIN-JEFFERSON-
INCLUDING THE CITIES OF...SALEM...BELLEVILLE...UNION
456 AM CST MON FEB 12 2007

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WINTER
WEATHER ADVISORY...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST TUESDAY. 

A MIX OF LIGHT RAIN AND LIGHT SNOW WILL DEVELOP ACROSS THE AREA
TODAY. TONIGHT...COLDER AIR WILL CAUSE SLEET TO BE ADDED TO THIS
MIX...WITH THE PRECIPITATION CHANGING TO ALL SNOW AS THE NIGHT
PROGRESSES. TOTAL SNOW AND SLEET ACCUMULATIONS WILL BE IN THE 3 TO
6 INCH RANGE.

A WINTER WEATHER ADVISORY IS ISSUED FOR A VARIETY OF WINTER
WEATHER CONDITIONS...SUCH AS SNOW...BLOWING SNOW...SLEET...OR
FREEZING DRIZZLE AND RAIN. IT ONLY TAKES A SMALL AMOUNT OF WINTRY
PRECIPITATION TO MAKE ROADS...BRIDGES...SIDEWALKS...AND PARKING
LOTS ICY AND DANGEROUS. IT IS OFTEN DIFFICULT TO TELL WHEN ICE
BEGINS TO FORM...SO DO NOT BE CAUGHT OFF GUARD.

$$

TRUETT

What forecasters said that day

The local office's own words before this winter storm watch 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 winter storm watch went out at Feb 11, 3:57 AM CST, 11 minutes earlier.

Area forecast discussion, Feb 11, 3:57 AM CST, 11 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
357 AM CST SUN FEB 11 2007

.DISCUSSION...
WINTER STORM FOR MONDAY CONTINUES TO BE THE PRIMARY FOCUS.  BY
FAR...THE MOST CONSISTENT MODEL OVER THE PAST 3 DAYS HAS BEEN THE
GFS.  THE NAM KEEPS COMING IN A BIT FURTHER NORTH AND THEREFORE
WARMER WITH EACH RUN WHILE THE GFS HAS BEEN REALLY CONSISTENT IN
TRACKING THE SURFACE LOW ACROSS ARKANSAS AND SOUTH OF THE BOOTHEEL
INTO TENNESSEE BY 12Z TUESDAY.  HAVE LEANED HEAVILY ON THE GFS
BECAUSE OF ITS CONSISTENCY.

FORECAST SOUNDINGS STILL LOOK COLD ENOUGH FOR SNOW ACROSS THE
NORTHERN TIER OF THE CWFA WITH A MIX OF RAIN AND SNOW ACROSS THE
MID-SECTION...AND PRIMARILY RAIN IN THE SOUTH.  FEEL CONFIDENT
ENOUGH THAT CONDITIONS COULD HIT WARNING CRITERIA TO HOIST A WATCH
FOR NORTHERN AND NORTHEAST SECTIONS OF THE CWFA STARTING MONDAY
MORNING AND CONTINUING THROUGH TUESDAY MORNING.  NORTHEAST SECTIONS
OF THE CWFA BETWEEN WHITE HALL AND VANDALIA MAY SEE SOME
ACCUMULATING ICY MIX...ESPECIALLY LATE MONDAY AFTERNOON OR EARLY
MONDAY EVENING AS THEY WILL BE CLOSEST TO THE SHALLOW COLD AIR LEFT
BEHIND BY THE ARCTIC RIDGE WHICH HAS BEEN CONTROLLING OUR WEATHER
FOR THE PAST FEW DAYS.  THINK IT LIKELY THAT ANY MIX THAT DOES
HAPPEN WONT LAST TOO LONG...BUT THERE COULD BE A QUICK 1/10 OR 2/10
ACCUMULATION OF SLEET OR ICE AS THE COLD AIR SLIPS SOUTH.  WHILE A
MIXTURE OF FREEZING/FROZEN PRECIP STILL LOOKS LIKELY ON MONDAY NIGHT
AT TIMES ACROSS THE CENTRAL AND SOUTHERN PORTIONS OF THE CWFA...IT
LOOKS LIKE THERE WILL BE A LULL IN THE PRECIPITATION SO SIGNIFICANT
ICE ACCUMULATIONS DONT APPEAR LIKELY AT THIS TIME.  ANY SLEET LEFT
OVER AFTER MIDNIGHT TUESDAY MORNING SHOULD TURN OVER TO ALL SNOW
QUICKLY AS THE STORM SUCKS VERY COLD AIR INTO THE AREA FROM THE
NORTH.  WRAP-AROUND DEFORMATION ZONE SNOW LOOKS LIKELY TO CONTINUE
ACROSS MUCH OF THE AREA THROUGH TUESDAY MORNING...TAPERING OFF
AROUND NOON TIME.

WANTED TO STRESS THAT THERE IS STILL VERY LITTLE REAL DATA BEING
COLLECTED ON THE STORM AS THE SHORTWAVE IS JUST BEGINNING TO COME
ONSHORE NOW.  THE TRACK AND TIMING OF THIS STORM IS STILL UNCERTAIN
AND A DIFFERENCE OF JUST A FEW 10S OF MILES IN THE TRACK COULD
CHANGE THE FORECAST DRASTICALLY.

MANY THANKS TO WFOS DVN...ILX...PAH...SGF...AND EAX FOR COORDINATION
AND COLLABORATION EFFORTS ON THIS DIFFICULT FORECAST.

CARNEY

&&

.AVIATION...
FOR THE 06Z TAFS...
VFR CONDITIONS EXPECTED FOR TAF PERIOD. MID LEVEL CLOUD DECK
CONTNUES TO MOVE EAST ACROSS MO AND IL LATE THIS EVENING. EXPECT
THESE CLOUDS TO GIVE WAY TO MOSTLY SUNNY SKIES ON SUNDAY AS
CLEARING ACROSS KANSAS WORKS EAST. CALM WINDS WILL BECOME
SOUTHERLY SUNDAY MORNING AS RIDGE MOVES EAST OF THE REGION.

CVKING

&&

.LSX WATCHES/WARNINGS/ADVISORIES...
MO...WINTER STORM WATCH FROM MONDAY MORNING THROUGH TUESDAY MORNING
     FOR KNOX-LEWIS-MARION.

IL...WINTER STORM WATCH FROM MONDAY MORNING THROUGH TUESDAY MORNING
     FOR ADAMS IL-BROWN IL-FAYETTE IL-GREENE IL-MACOUPIN IL-
     MONTGOMERY IL-PIKE IL.

&&

WFO LSX
Hazardous weather outlook, Feb 10, 3:32 PM CST, 12 hours 36 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
332 PM CST SAT FEB 10 2007

ILZ095>097-MOZ018-019-026-027-034>036-111230-
ADAMS IL-BROWN IL-PIKE IL-KNOX-LEWIS-SHELBY-MARION-MONROE-RALLS-
PIKE-
332 PM CST SAT FEB 10 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
ILLINOIS AND NORTHEAST MISSOURI.

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THERE IS A CHANCE OF SNOW BEGINNING ON SUNDAY NIGHT. THE SNOW
WILL SPREAD ACROSS THE REGION SUNDAY NIGHT WITH PERIODS OF SNOW
CONTINUING INTO TUESDAY. IT APPEARS THIS STORM WILL HAVE THE
POTENTIAL TO PRODUCE SIGNIFICANT SNOW ACCUMULATIONS WHICH WOULD
CREATE HAZARDOUS TRAVEL CONDITIONS. THE TRACK OF THIS STORM IS STILL
UNCERTAIN MAKING IT DIFFICULT AT THIS TIME TO TELL WHERE AND HOW
MUCH SNOW WILL FALL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED TONIGHT.

ILZ058>060-064-065-069-070-074-079-098>102-MOZ041-042-047>052-
059>065-072>075-084-085-099-111230-
GREENE IL-MACOUPIN IL-MONTGOMERY IL-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-
332 PM CST SAT FEB 10 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
ILLINOIS...SOUTHWEST ILLINOIS...CENTRAL MISSOURI...EAST CENTRAL
MISSOURI AND SOUTHEAST MISSOURI.

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THERE IS A CHANCE OF SNOW BEGINNING ON SUNDAY NIGHT. THE SNOW WILL
LIKELY CHANGE OVER TO RAIN ON MONDAY...THEN CHANGE OVER TO SNOW
AND SLEET ON MONDAY NIGHT AND BACK TO ALL SNOW ON TUESDAY AS COLD
AIR FILTERS INTO THE AREA BEHIND THE STORM SYSTEM. IT APPEARS
THIS STORM WILL PRODUCE SOME ACCUMULATING SNOW LATE MONDAY NIGHT
AND TUESDAY LEADING TO HAZARDOUS TRAVEL CONDITIONS. THE TRACK OF THIS
STORM IS STILL UNCERTAIN MAKING IT DIFFICULT AT THIS TIME TO TELL
WHERE AND HOW MUCH OF THE WINTRY PRECIPITATION WILL FALL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED TONIGHT.

GKS

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 11, 3:54 PM CSTWinter Weather AdvisoryLSXKnox, Lewis, Marion, Shelby13 hr
Feb 11, 3:54 PM CSTFreezing Rain AdvisoryLSXAudrain, Boone, Callaway, Lincoln, Monroe, Montgomery and 6 more13 hr

Nearby

Winter Storm Watches in Missouri, 2007Winter Storm Watches in Illinois, 2007Every winter storm watch in 2007

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.