Heavy Snow in Missouri, December 15, 2007

Name: Heavy Snow in Missouri, December 15, 2007
Start: 2007-12-15T05:00
End: 2007-12-15T22:00
Location: Missouri

December 15, 2007 · NWS LSX · 10 events in 10 counties and zones

Snowfall up to 8 inches fell across east central Missouri. Travel was disrupted through the weekend.

Where it happened

Every event with a place to put it; 10 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 10

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS LSX wrote it up.

Snowfall up to 8 inches fell across east central Missouri. Travel was disrupted through the weekend. Thundersnow was reported in St. Louis County from about 6 to 8 PM CST.

What forecasters said that day

The local office's own words before the first event, 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 the first event at Dec 15, 3:56 AM CST, 1 hour 4 minutes earlier.

Area forecast discussion, Dec 15, 3:56 AM CST, 1 hour 4 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
356 AM CST SAT DEC 15 2007

.DISCUSSION...
WELL STORM IS ONGOING AS OF 09Z. FIRST ROUND IS SLOWLY TAPERING OFF
FROM WEST TO EAST...THOUGH STILL GETTING REPORTS OF LIGHT SNOW IN
DRY SLOT AREA FROM CENTRAL MO TO SW MO. CURRENT MAX AREA OF SNOWFALL
EXTENDS FROM MONITEAU COUNTY NORTHEASTWARD TOWARDS CALHOUN COUNTY IN
ILLINOIS WITH A LITTLE OVER TWO INCHES IN THIS AREA...WITH LIGHTER
AMOUNTS TO THE NORTH AND SOUTH OF THIS AREA. FAR SOUTHERN PORTIONS
OF CWA HAVE MOSTLY GOTTEN RAIN WITH OCCASIONAL REPORTS OF SLEET
AND/OR SNOW.

REGIONAL RADAR DOES INDICATE WRAPAROUND/TROWAL AREA SETTING UP A
LITTLE FURTHER NORTH OVER WESTERN MO...IF THIS POSITION PERSISTS MAY
NEED TO EXPAND WINTER STORM WARNING FURTHER NORTH LATER THIS MORNING.

IN THE MEANTIME...MODELS INDICATE SOME MID LEVEL DRYING...THUS LACK
OF ICE CRYSTALS ALOFT...SO ADDED MENTION OF LIGHT FREEZING DRIZZLE
MIXED WITH LIGHT SNOW...FROM WEST TO EAST BEGINNING AROUND 7 AM
TODAY. MODERATE SNOW TO MOVE BACK INTO COU BY 2 PM...UIN BY 4
PM...THEN BACK INTO THE METRO AREA BY 6 PM WITH SECOND ROUND OF SNOW.
WITH SLOWER SPEED FOR SYSTEM INDICATED BY THE MODELS...NEEDED TO
EXPAND WINTER STORM WARNING FOR FAR EASTERN COUNTIES TIL 12Z ON
SUNDAY AS THEY WILL REMAIN IN THE TROWAL REGION WELL PAST 06Z
TONIGHT AND SEE AN ADDITIONAL 1 TO 2 INCHES. AS FOR STORM TOTAL
AMOUNTS...HAVE BACKED OFF A LITTLE AS WE DID NOT RECEIVE AS MUCH AS
FIRST THOUGHT WITH THIS ROUND. SHOULD SEE UP TO 6 INCHES OVER
CENTRAL MO...AND 6 TO 8 INCHES FROM ST. LOUIS EASTWARD ALONG I-70
CORRIDOR. FOR FAR SOUTHERN SECTIONS...MORE RAIN HAS FALLEN...
REDUCING SNOW/SLEET TOTALS TO AROUND 2 TO 5 INCHES BY THE TIME THE
SYSTEM EXITS THE REGION.

BEYOND THAT NO CHANGES TO THE EXTENDED WITH COLDER TEMPS EXPECTED
DUE TO SNOW COVER..THEN SEE TEMPS MODERATE FROM THERE INTO MID WEEK
AS SOUTHERLY SURFACE WINDS RETURN.

BYRD
&&

.AVIATION...
FOR THE 06Z TAFS...
SNOW...INITIALLY MIXED WITH SLEET...IS STEADILY MARCHING TOWARD
STL. SHOULD SEE CONDITIONS DETERIORATE QUICKLY TO IFR/LIFR
OVERNIGHT. THEN A BREAK BY MID MORNING SATURDAY AS DRY SLOT WRAPS
AROUND UPPER LOW. WILL LIKELY SEE A PERIOD OF FZDZ WITH LOW LEVEL
MOISTURE STILL IN TACT...BUT DRIER CONDITIONS ALOFT. THEN ROUND 2
OF SNOW BEGINS LATE TOMORROW AFTERNOON ACROSS MID MISSOURI AND
ROTATES EAST ACROSS STL METRO DURING THE EVENING. WINDS WILL BEGIN
NORTHEAST AND END NORTH BY END OF VALID TAF PERIOD.

CVKING
&&

.LSX WATCHES/WARNINGS/ADVISORIES...
MO...WINTER STORM WARNING UNTIL MIDNIGHT CST TONIGHT FOR 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.

     SNOW ADVISORY UNTIL MIDNIGHT CST TONIGHT FOR AUDRAIN-KNOX-LEWIS-
     MARION-MONROE-PIKE-RALLS-SHELBY.

IL...WINTER STORM WARNING UNTIL MIDNIGHT CST TONIGHT FOR CALHOUN IL-
     GREENE IL-JERSEY IL-MONROE IL-RANDOLPH IL.

     WINTER STORM WARNING UNTIL 6 AM CST SUNDAY FOR BOND IL-CLINTON
     IL-FAYETTE IL-MACOUPIN IL-MADISON IL-MARION IL-MONTGOMERY
     IL-ST. CLAIR IL-WASHINGTON IL.

     SNOW ADVISORY UNTIL MIDNIGHT CST TONIGHT FOR ADAMS IL-BROWN IL-
     PIKE IL.
&&

WFO LSX

Hazardous weather outlook, Dec 14, 4:19 PM CST, 12 hours 41 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
419 PM CST FRI DEC 14 2007

ILZ095>097-MOZ018-019-026-027-034>036-151215-
ADAMS IL-BROWN IL-PIKE IL-KNOX-LEWIS-SHELBY-MARION-MONROE-RALLS-
PIKE-
419 PM CST FRI DEC 14 2007

...SNOW ADVISORY FROM MIDNIGHT TONIGHT TO MIDNIGHT CST SATURDAY
NIGHT...

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

.DAY ONE...TONIGHT

SNOW WILL DEVELOP LATE TONIGHT WITH ONE TO TWO INCHES OF SNOW.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THE SNOW WILL CONTINUE ON SATURDAY AND SATURDAY EVENING WITH A
TOTAL ACCUMULATION FROM THIS STORM OF 3 TO 5 INCHES OF SNOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ATTENTION IS REQUIRED. PLEASE SEND IN SNOWFALL REPORTS AND
AMOUNTS TO THE NATIONAL WEATHER SERVICE.

&&

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

ILZ058>060-064-065-069-070-098>102-MOZ041-042-047>052-059>065-
151215-
GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL-
MARION 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-
419 PM CST FRI DEC 14 2007

...WINTER STORM WARNING FROM MIDNIGHT TONIGHT TO MIDNIGHT CST
SATURDAY NIGHT...

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

.DAY ONE...TONIGHT

SNOW WILL DEVELOP LATE TONIGHT WITH ONE TO THREE INCHES OF SNOW.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THE SNOW WILL CONTINUE ON SATURDAY AND SATURDAY EVENING WITH A
TOTAL ACCUMULATION FROM THIS STORM OF 5 TO 8 INCHES OF SNOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ATTENTION IS REQUIRED. PLEASE SEND IN SNOWFALL REPORTS AND
AMOUNTS TO THE NATIONAL WEATHER SERVICE.

&&

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

ILZ074-079-MOZ072>075-084-085-099-151215-
WASHINGTON IL-RANDOLPH IL-CRAWFORD-WASHINGTON-ST. FRANCOIS-
STE. GENEVIEVE-IRON-MADISON-REYNOLDS-
419 PM CST FRI DEC 14 2007

...WINTER STORM WARNING FROM MIDNIGHT TONIGHT TO MIDNIGHT CST
SATURDAY NIGHT...
...WINTER STORM WARNING FROM MIDNIGHT TONIGHT TO MIDNIGHT CST
SATURDAY NIGHT...

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

.DAY ONE...TONIGHT

SNOW AND SLEET WILL DEVELOP LATE TONIGHT WITH ONE TO THREE INCHES
OF SNOW AND SLEET ACCUMULATION.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THE SNOW AND SLEET WILL CONTINUE ON SATURDAY CHANGING TO ALL SNOW SATURDAY
EVENING WITH A TOTAL SNOW AND SLEET ACCUMULATION FROM THIS STORM
OF 5 TO 8 INCHES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ATTENTION IS REQUIRED. PLEASE SEND IN WINTER WEATHER
REPORTS AND AMOUNTS OF SNOW AND SLEET TO THE NATIONAL WEATHER
SERVICE.

&&

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

GKS

In the hours before

Local storm report, Dec 14, 11:38 PM CST, 5 hours 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1138 PM CST FRI DEC 14 2007

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

1135 PM     SNOW             WARRENTON               38.82N 91.14W
12/14/2007  U0.0 INCH        WARREN             MO   TRAINED SPOTTER

            SNOW HAS ALREADY COVERED ROADWAYS...SNOW STARTED 15
            MINUTES AGO.

&&

CVKING

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

10 heavy snow. Local standard time, as filed.

Heavy Snow, Crawford

When: December 15, 5:00 AM CST to 10:00 PM CST
Where: Crawford forecast zone
Reported by: Trained Spotter
Coordinates: 37.976, -91.304 (the zone’s center; the record gives no point)

Heavy Snow, Franklin

When: December 15, 5:00 AM CST to 10:00 PM CST
Where: Franklin forecast zone
Reported by: Trained Spotter
Coordinates: 38.411, -91.075 (the zone’s center; the record gives no point)

Heavy Snow, Jefferson

When: December 15, 5:00 AM CST to 10:00 PM CST
Where: Jefferson forecast zone
Reported by: Trained Spotter
Coordinates: 38.261, -90.538 (the zone’s center; the record gives no point)

Heavy Snow, Lincoln

When: December 15, 5:00 AM CST to 10:00 PM CST
Where: Lincoln forecast zone
Reported by: Trained Spotter
Coordinates: 39.058, -90.960 (the zone’s center; the record gives no point)

Heavy Snow, Pike

When: December 15, 5:00 AM CST to 10:00 PM CST
Where: Pike forecast zone
Reported by: Trained Spotter
Coordinates: 39.344, -91.171 (the zone’s center; the record gives no point)

Heavy Snow, St. Charles

When: December 15, 5:00 AM CST to 10:00 PM CST
Where: St. Charles forecast zone
Reported by: Trained Spotter
Coordinates: 38.782, -90.675 (the zone’s center; the record gives no point)

Heavy Snow, St. Louis

When: December 15, 5:00 AM CST to 10:00 PM CST
Where: St. Louis forecast zone
Reported by: Trained Spotter
Coordinates: 38.641, -90.443 (the zone’s center; the record gives no point)

Heavy Snow, St. Louis (C)

When: December 15, 5:00 AM CST to 10:00 PM CST
Where: St. Louis (C) forecast zone
Reported by: Trained Spotter
Coordinates: 38.627, -90.198 (the zone’s center; the record gives no point)

Heavy Snow, Warren

When: December 15, 5:00 AM CST to 10:00 PM CST
Where: Warren forecast zone
Reported by: Trained Spotter
Coordinates: 38.765, -91.161 (the zone’s center; the record gives no point)

Heavy Snow, Washington

When: December 15, 5:00 AM CST to 10:00 PM CST
Where: Washington forecast zone
Reported by: Trained Spotter
Coordinates: 37.962, -90.877 (the zone’s center; the record gives no point)

What these are

Heavy Snow: Snowfall reaching the local warning threshold without the other hazards of a winter storm.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Missouri in 2007 Every state in 2007 This day in weather history Warnings in Missouri, December 2007

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 71206, 71207, 71208, 71209, 71210, 71211, 71212, 71213, 71214, 71215.