Alert archive / Missouri / Freeze Watches in 2008

Freeze Watch 2, NWS St. Louis, MO

October 25, 200818 counties in Missouri; 14 counties in Illinois

NWS St. Louis, MO issued this freeze watch at Oct 25, 2008, 3:50 PM CDT for 18 counties in Missouri; 14 counties in Illinois. It took effect at Oct 28, 2008, 1:00 AM CDT. It was in force for .

The area

The counties it named.

The facts

Issued
Oct 25, 2008, 3:50 PM CDT (20:50 UTC)
In effect from
Oct 28, 2008, 1:00 AM CDT
Expired
Oct 27, 2008, 3:16 AM CDT
In force
Issued by
NWS St. Louis, MO
All 32 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, 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, 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), 31 km from the middle of the area, began a volume at 20:49 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

Davenport, (KDVN), launched 12:00Z, 8.8 hours before the alert went out and 347 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, Davenport, at 12:00Z on 2008-10-25Temperature 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, Davenport, at 12:00Z on 2008-10-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.19395878Sfc1 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
643 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this freeze 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 freeze watch went out at Oct 25, 3:20 PM CDT, 30 minutes earlier.

Area forecast discussion, Oct 25, 3:20 PM CDT, 30 minutes before
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Hazardous weather outlook, Oct 25, 3:30 PM CDT, 20 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
330 PM CDT SAT OCT 25 2008

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-261200-
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-
330 PM CDT SAT OCT 25 2008

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

NORTHWEST WINDS WILL BECOME STRONG AND GUSTY BEHIND THE COLD FRONT
SUNDAY AFTERNOON AND EARLY EVENING. LOOK FOR SUSTAINED SPEEDS FROM
AROUND 30 MPH WITH GUSTS TO 45 MPH FOR PARTS OF NORTHEAST MISSOURI
AND WEST CENTRAL ILLINOIS...WHERE A WIND ADVISORY IS IN EFFECT
FROM 12 PM TO 9 PM SUNDAY. FOR FURTHER INFORMATION...PLEASE REFER
TO THE ADVISORY PRODUCT. ELSEWHERE...NORTHWEST WINDS WILL BLOW AT
SUSTAINED SPEEDS OF AROUND 20 TO 25 MPH WITH GUSTS FROM 30 TO 40
MPH.

THE COLDEST AIR OF THE SEASON WILL AFFECT THE REGION BEGINNING
SUNDAY NIGHT AND CONTINUE THROUGH TUESDAY MORNING. THE RESULT WILL
BE A HEIGHTENED POTENTIAL FOR SUB FREEZING TEMPERATURES ACROSS THE
BI-STATE REGION CULMINATING IN A POSSIBLE HARD FREEZE EARLY
TUESDAY MORNING. AS A RESULT...FREEZE WATCHES ARE IN EFFECT FOR
PARTS OF THE REGION FOR EARLY MONDAY AND EARLY TUESDAY MORNING.
FOR FURTHER INFORMATION...PLEASE REFER TO THE WATCH PRODUCTS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT.

&&

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

TES

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 25, 3:50 PM CDTFreeze WatchLSXAudrain, Boone, Callaway, Cole, Crawford, Franklin and 14 more12 hr
Oct 25, 3:50 PM CDTWind AdvisoryLSXKnox, Lewis, Marion, Monroe, Pike, Ralls and 1 more29 hr

Nearby

Freeze Watches in Missouri, 2008Freeze Watches in Illinois, 2008Every freeze watch in 2008

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.