Alert archive / Illinois / Wind Advisories in 2006

Wind Advisory 2, NWS St. Louis, MO

April 3, 20068 counties in Illinois; 6 counties in Missouri

NWS St. Louis, MO issued this wind advisory at Apr 3, 2006, 3:44 AM CDT for 8 counties in Illinois; 6 counties in Missouri. It took effect at Apr 3, 2006, 4:00 AM CDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued: Apr 3, 2006, 3:44 AM CDT (08:44 UTC)
In effect from: Apr 3, 2006, 4:00 AM CDT
Expired: Apr 3, 2006, 10:21 AM CDT
In force: 6 hr
Issued by: NWS St. Louis, MO

Counties Adams County, IL, Brown County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Montgomery County, IL, Pike County, IL, Knox County, MO, Lewis County, MO, Lincoln County, MO, Marion County, MO, Pike County, MO, Ralls County, MO

The radar

The St Louis radar (KLSX), 96 km from the middle of the area, began a volume at 08:50 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, 8.7 hours before the alert went out and 209 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1184 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 746 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 253 m²/s²
0-3 km storm-relative helicity: 276 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 4.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS73 KLSX 030844
NPWLSX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
344 AM CDT MON APR 3 2006

ILZ058>060-095>099-MOZ018-019-027-035-036-052-031700-
/O.NEW.KLSX.WI.Y.0002.060403T0900Z-060403T1700Z/
ADAMS IL-BROWN IL-CALHOUN IL-GREENE IL-JERSEY IL-KNOX-LEWIS-
LINCOLN-MACOUPIN IL-MARION-MONTGOMERY IL-PIKE-PIKE IL-RALLS-
INCLUDING THE CITIES OF...BOWLING GREEN...HANNIBAL...LITCHFIELD...
QUINCY
344 AM CDT MON APR 3 2006

...WIND ADVISORY IN EFFECT UNTIL NOON CDT TODAY...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL NOON CDT TODAY. 

A LARGE PRESSURE DIFFERENCE BETWEEN LOW PRESSURE OVER THE GREAT
LAKES AND HIGH PRESSURE OVER THE PLAINS WILL PRODUCE STRONG
NORTHWEST WINDS OVER THE AREA TODAY.

THE HIGHEST WINDS ARE EXPECTED TO OCCUR THIS MORNING...WITH
SUSTAINED SPEEDS OF AROUND 30 MPH AND GUSTS UP TO 45 MPH. THE
WINDS WILL SLOWLY DIMINISH DURING THE AFTERNOON HOURS.

A WIND ADVISORY IS ISSUED WHEN SUSTAINED WINDS ARE FORECAST TO BE
30 TO 39 MPH OR GUSTS WILL RANGE BETWEEN 45 AND 57 MPH. WINDS OF
THESE MAGNITUDES MAY CAUSE MINOR PROPERTY DAMAGE WITHOUT EXTRA
PRECAUTIONS. 

MOTORISTS IN HIGH PROFILE VEHICLES SHOULD USE CAUTION UNTIL THE
WINDS SUBSIDE. IN ADDITION...THOSE WORKING IN AND NEAR BUILDING
SITES SHOULD MAKE CERTAIN THAT MATERIALS ARE SECURED...AND
STRUCTURES ARE PROPERLY BRACED.

$$

TRUETT

1 follow-up statement

000 
WWUS73 KLSX 031521
NPWLSX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE ST LOUIS MO
1021 AM CDT MON APR 3 2006

...THE WIND ADVISORY THAT WAS IN EFFECT UNTIL NOON HAS BEEN CANCELLED...

.GUSTY NORTHWEST WINDS HAVE DIMINISHED BELOW ADVISORY CRITERIA ACROSS
NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS.

ILZ058>060-095>099-MOZ018-019-027-035-036-052-031630-
/O.CAN.KLSX.WI.Y.0002.000000T0000Z-060403T1700Z/
ADAMS IL-BROWN IL-CALHOUN IL-GREENE IL-JERSEY IL-KNOX-LEWIS-
LINCOLN-MACOUPIN IL-MARION-MONTGOMERY IL-PIKE-PIKE IL-RALLS-
INCLUDING THE CITIES OF...BOWLING GREEN...HANNIBAL...LITCHFIELD...
QUINCY
1021 AM CDT MON APR 3 2006

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS CANCELLED THE WIND
ADVISORY. THE PRESSURE GRADIENT BETWEEN A LOW PRESSURE SYSTEM OVER
MICHIGAN AND HIGH PRESSURE OVER THE CENTRAL GREAT PLAINS HAS
LESSENED LATE THIS MORNING. NORTHWEST WINDS ARE FORECAST TO GUST
TO 25 TO 35 MPH UNTIL MID AFTERNOON BUT BELOW ADVISORY CRITERIA. 

$$

SCHROEDER

Nearby

Wind Advisories in Illinois, 2006 Wind Advisories in Missouri, 2006 Every wind advisory in 2006

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.