Alert archive / Missouri / Wind Chill Advisories in 2007

Wind Chill Advisory 2, NWS St. Louis, MO

February 16, 20077 counties in Missouri; Adams County, Brown County, Pike County, Illinois

NWS St. Louis, MO issued this wind chill advisory at Feb 16, 2007, 5:58 AM CST for 7 counties in Missouri; Adams County, Brown County, Pike County, Illinois. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Feb 16, 2007, 5:58 AM CST (11:58 UTC)
Expired
Feb 16, 2007, 10:00 AM CST
In force
4 hr
Issued by
NWS St. Louis, MO

Counties Adams County, IL, Brown County, IL, Pike County, IL, Knox County, MO, Lewis County, MO, Marion County, MO, Monroe County, MO, Pike County, MO, Ralls County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 139 km from the middle of the area, began a volume at 11:57 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 00:00Z, 12.0 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, Davenport, at 00:00Z on 2007-02-16Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2007-02-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.1939Sfc1 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
1265 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
65 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 161158
WSWLSX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
558 AM CST FRI FEB 16 2007

...DANGEROUSLY COLD WIND CHILLS THIS MORNING...

ILZ095>097-MOZ018-019-026-027-034>036-161600-
/O.NEW.KLSX.WC.Y.0002.070216T1200Z-070216T1600Z/
ADAMS IL-BROWN IL-PIKE IL-KNOX-LEWIS-SHELBY-MARION-MONROE-RALLS-
PIKE-
INCLUDING THE CITIES OF...QUINCY...HANNIBAL...BOWLING GREEN
558 AM CST FRI FEB 16 2007

...WIND CHILL ADVISORY IN EFFECT UNTIL 10 AM CST THIS MORNING...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WIND CHILL
ADVISORY...WHICH IS IN EFFECT UNTIL 10 AM CST THIS MORNING. 

VERY COLD TEMPERATURES OF 2 TO 6 DEGREES BELOW ZERO EARLY THIS
MORNING WERE COMBING WITH SOUTHWEST WINDS NEAR 10 MPH TO PRODUCE
WIND CHILL VALUES OF 15 TO 20 BELOW ZERO. THESE BITTERLY COLD WIND
CHILL VALUES SHOULD PERSIST UNTIL MID MORNING.

A WIND CHILL ADVISORY IS ISSUED WHEN WIND COMBINES WITH VERY LOW
TEMPERATURES TO CREATE DANGEROUS CONDITIONS FOR EXPOSED SKIN. THE
COLD AIR AND WIND WILL MAKE IT FEEL LIKE IT IS BETWEEN 15 AND 24
DEGREES BELOW ZERO FOR SEVERAL HOURS. THOSE PLANNING TO VENTURE
OUTDOORS SHOULD USE COMMON SENSE AND DRESS WARMLY... MAKING SURE
THAT ALL EXPOSED SKIN IS COVERED.

$$
FG
1 follow-up statement
000 
WWUS43 KLSX 161621
WSWLSX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
1021 AM CST FRI FEB 16 2007


ILZ095>097-MOZ018-019-026-027-034>036-161730-
/O.EXP.KLSX.WC.Y.0002.000000T0000Z-070216T1600Z/
ADAMS IL-BROWN IL-PIKE IL-KNOX-LEWIS-SHELBY-MARION-MONROE-RALLS-
PIKE-
INCLUDING THE CITIES OF...QUINCY...HANNIBAL...BOWLING GREEN
1021 AM CST FRI FEB 16 2007

...WIND CHILL ADVISORY HAS EXPIRED...

UNDER SUNNY SKIES TEMPERATURES HAVE WARMED UP TO BETWEEN 5 AND 10
DEGREES THIS MORNING WITH WIND CHILL INDICIES IN THE ZERO TO MINUS
10 RANGE EXPECTED THROUGH NOON. SO THE WIND CHILL ADVISORY IS NO
LONGER IN EFFECT.

$$

BYRD

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 16, 2:00 PM CSTSnow and Blowing Snow AdvisoryLSXAudrain, Boone, Callaway, Cole, Crawford, Franklin and 23 more14 hr

Nearby

Wind Chill Advisories in Missouri, 2007Wind Chill Advisories in Illinois, 2007Every wind chill advisory 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.