Alert archive / Missouri / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 161, NWS St. Louis, MO

May 31, 2004Lincoln County, Saint Charles County, Warren County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 31, 2004, 7:46 PM CDT for Lincoln County, Saint Charles County, Warren County, Missouri. It was in force for 59 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 31, 2004, 7:46 PM CDT (00:46 UTC)
Expired: May 31, 2004, 8:45 PM CDT
In force: 59 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

Counties Lincoln County, MO, Saint Charles County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 25 km from the middle of the area, began a volume at 00:45 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.

What was reported inside it

Time	Report	Where	Remark
May 31, 8:10 PM CDT	TSTM WND DMG	Harvester, MO	LARGE TREE LIMBS DOWN IN HARVESTER...NEAR MCCLAY. TIME ESTIMATED.
May 31, 8:10 PM CDT	TSTM WND DMG	Harvester, MO	LARGE TREE LIMBS DOWN IN HARVESTER...NEAR MCCLAY. TIME ESTIMATED.
May 31, 8:10 PM CDT	TSTM WND DMG	Harvester, MO	LARGE TREE LIMBS DOWN IN HARVESTER...NEAR MCCLAY. TIME ESTIMATED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.8 hours before the alert went out and 238 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: 231 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 2205 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 94 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 
WUUS53 KLSX 010046
SVRLSX
MOC113-183-219-010145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
746 PM CDT MON MAY 31 2004

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI
  ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI
  WARREN COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 845 PM CDT

* AT 746 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 6 MILES NORTHEAST OF TROY TO 12
  MILES SOUTHWEST OF WARRENTON...MOVING EAST AT 20 MPH. THE PRIMARY
  THREAT FROM THIS LINE OF STORMS WILL BE DAMAGING WINDS.

* LOCATIONS IMPACTED INCLUDE...
  WRIGHT CITY
  MOSCOW MILLS
  WENTZVILLE
  ST. PAUL
  NEW MELLE
  LAKE ST. LOUIS
  AUGUSTA
  OFALLON
  DARDENNE PRAIRIE

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

LAT...LON 3912 9090 3872 9135 3856 9087 3890 9034
          3891 9065

$$
FG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 7:34 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	26 min
May 31, 7:54 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Montgomery	36 min
May 31, 8:16 PM CDT	Severe Thunderstorm Warning	LSX	Saint Louis, City of Saint Louis	44 min
May 31, 8:21 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Lincoln, Montgomery, Warren	24 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2004 Every severe thunderstorm warning in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.