Alert archive / Missouri / Winter Storm Watches in 2007
Winter Storm Watch 7, NWS St. Louis, MO
NWS St. Louis, MO issued this winter storm watch at Dec 14, 2007, 12:28 PM CST for 21 counties in Missouri; 14 counties in Illinois. It took effect at Dec 15, 2007, 12:00 AM CST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Dec 14, 2007, 12:28 PM CST (18:28 UTC)
- In effect from
- Dec 15, 2007, 12:00 AM CST
- Expired
- Dec 14, 2007, 4:11 PM CST
- In force
- Issued by
- NWS St. Louis, MO
All 35 counties
Bond County, IL, Calhoun County, IL, Clinton County, IL, Fayette County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, 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), 20 km from the middle of the area, began a volume at 18:25 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, 6.5 hours before the alert went out and 249 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 978 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- -71 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Dec 14, 12:17 PM CST, 11 minutes earlier.
Area forecast discussion, Dec 14, 12:17 PM CST, 11 minutes before
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</html>Hazardous weather outlook, Dec 14, 5:15 AM CST, 7 hours 13 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 515 AM CST FRI DEC 14 2007 ILZ058>060-064-065-069-070-074-095>102-MOZ018-019-026-027-034>036- 041-042-047>052-059>065-151200- GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL- MARION IL-WASHINGTON 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- 515 AM CST FRI DEC 14 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL ILLINOIS...SOUTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...CENTRAL MISSOURI...EAST CENTRAL MISSOURI AND NORTHEAST MISSOURI. .DAY ONE...TODAY AND TONIGHT PATCHY FREEZING FOG...ESPECIALLY OVER CENTRAL MISSOURI... WILL REDUCE VISIBILITIES TO LESS THAN A MILE AT TIMES AND CAUSE SLICK SPOTS ON ROADWAYS. CONDITIONS WILL IMPROVE BY MID MORNING. CONFIDENCE IS GROWING THAT A SIGNIFICANT WINTER STORM WILL IMPACT THE AREA BEGINNING LATE TONIGHT. SNOW WILL SPREAD INTO THE AREA AFTER MIDNIGHT AND INCREASE IN COVERAGE AND INTENSITY TOWARDS DAYBREAK. ONE TO TWO INCHES OF ACCUMULATION WILL BE POSSIBLE. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SNOW WILL PERSIST INTO SATURDAY AND TAPER OFF LATE SATURDAY EVENING...WITH AN ADDITIONAL 1 TO 2 INCHES OF ACCUMULATION FOR A TOTAL OF 2 TO 4 INCHES BY THE TIME THE STORM ENDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ATTENTION IS REQUIRED. SPOTTERS ARE ENCOURAGED TO REPORT WINTRY PRECIPITATION 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 ILZ079-MOZ072>075-084-085-099-151200- RANDOLPH IL-CRAWFORD-WASHINGTON-ST. FRANCOIS-STE. GENEVIEVE-IRON- MADISON-REYNOLDS- 515 AM CST FRI DEC 14 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST ILLINOIS...EAST CENTRAL MISSOURI AND SOUTHEAST MISSOURI. .DAY ONE...TODAY AND TONIGHT PATCHY FREEZING FOG...ESPECIALLY OVER CENTRAL MISSOURI... WILL REDUCE VISIBILITIES TO LESS THAN A MILE AT TIMES AND CAUSE SLICK SPOTS ON ROADWAYS. CONDITIONS WILL IMPROVE BY MID MORNING. CONFIDENCE IS GROWING THAT A SIGNIFICANT WINTER STORM WILL IMPACT THE AREA BEGINNING LATE TONIGHT. THERE WILL BE A MIX OF SNOW AND SLEET TONIGHT...THEN ALL SNOW IS EXPECTED ON SATURDAY. THE MIXED PRECIPITATION WILL SPREAD INTO THE AREA AFTER MIDNIGHT AND INCREASE IN COVERAGE AND INTENSITY TOWARDS DAYBREAK. ONE TO TWO INCHES OF ACCUMULATION WILL BE POSSIBLE. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SNOW WILL PERSIST INTO SATURDAY AND TAPER OFF LATE SATURDAY EVENING...WITH AN ADDITIONAL 1 TO 2 INCHES OF ACCUMULATION FOR A TOTAL OF 2 TO 4 INCHES BY THE TIME THE STORM ENDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ATTENTION IS REQUIRED. SPOTTERS ARE ENCOURAGED TO REPORT WINTRY PRECIPITATION 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 BYRD
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 14, 4:11 PM CST | Snow Advisory | LSX | Audrain, Knox, Lewis, Marion, Monroe, Pike and 2 more | 32 hr |
| Dec 14, 4:11 PM CST | Winter Storm Warning | LSX | Audrain, Boone, Callaway, Cole, Crawford, Franklin and 20 more | 35 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.