Alert archive / Missouri / Tornado Warnings in 2008

Tornado Warning 80, NWS St. Louis, MO

July 30, 2008Jefferson County, Saint Francois County, Washington County, Missouri

NWS St. Louis, MO issued this tornado warning at Jul 30, 2008, 4:24 PM CDT for Jefferson County, Saint Francois County, Washington County, Missouri. It was in force for 51 min. 1 report 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
Jul 30, 2008, 4:24 PM CDT (21:24 UTC)
Expired
Jul 30, 2008, 5:15 PM CDT
In force
51 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon

Counties Jefferson County, MO, Saint Francois County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 79 km from the middle of the area, began a volume at 21:25 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.

What was reported inside it

TimeReportWhereRemark
Jul 30, 4:25 PM CDTFUNNEL CLOUDBlackwell, MO

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 12:00Z, 9.4 hours before the alert went out and 290 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, Lincoln, IL at 12:00Z on 2008-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 78 joules per kilogram.LCLLFCEL10008507005003002001001 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, Lincoln, IL at 12:00Z on 2008-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.193958Sfc1 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
78 J/kg
Mixed-layer CIN
-156 J/kg
Mixed-layer LCL
1609 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
42 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 
WFUS53 KLSX 302124
TORLSX
MOC099-187-221-302215-
/O.NEW.KLSX.TO.W.0080.080730T2124Z-080730T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
424 PM CDT WED JUL 30 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN JEFFERSON COUNTY IN EAST CENTRAL MISSOURI
  EASTERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI
  NORTHERN ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI

* UNTIL 515 PM CDT

* AT 421 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION NEAR OLD MINES...OR ABOUT
  4 MILES NORTHEAST OF POTOSI...MOVING EAST AT 17 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BONNE TERRE...
  OLYMPIAN VILLAGE...
  BLACKWELL...
  VALLES MINES...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

LAT...LON 3791 9077 3807 9077 3816 9039 3805 9040
      3805 9041 3804 9041 3804 9040 3791 9042
      3790 9044
TIME...MOT...LOC 2123Z 265DEG 15KT 3799 9074

$$

BRITT
3 follow-up statements
000 
WWUS53 KLSX 302139
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
439 PM CDT WED JUL 30 2008

MOC221-302146-
/O.CAN.KLSX.TO.W.0080.000000T0000Z-080730T2215Z/
WASHINGTON MO-
436 PM CDT WED JUL 30 2008

...THE TORNADO WARNING FOR EASTERN WASHINGTON COUNTY IS CANCELLED...

THE STRONG ROTATION HAS MOVED OUT OF WASHINGTON COUNTY.

LAT...LON 3791 9064 3808 9064 3816 9039 3805 9040
      3805 9041 3804 9040 3791 9042 3790 9044
TIME...MOT...LOC 2136Z 269DEG 22KT 3798 9062

$$

MOC099-187-302215-
/O.CON.KLSX.TO.W.0080.000000T0000Z-080730T2215Z/
ST. FRANCOIS MO-JEFFERSON MO-
436 PM CDT WED JUL 30 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR SOUTHERN 
JEFFERSON AND NORTHERN ST. FRANCOIS COUNTIES...

AT 433 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORMS WITH STRONG ROTATION NEAR  
BLACKWELL...OR 6 MILES NORTHWEST OF BONNE TERRE.  A SECOND ROTATION 
WAS LOCATED JUST NORTHWEST OF VALLES MINES.  BOTH OF THESE ROTATIONS 
WERE MOVING EAST AT 25 MPH.

LOCATIONS NEAR THE PATH OF THE TORNADO INCLUDE...BONNE TERRE AND
VALLES MILL.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3791 9064 3808 9064 3816 9039 3805 9040
      3805 9041 3804 9040 3791 9042 3790 9044
TIME...MOT...LOC 2136Z 269DEG 22KT 3798 9062

$$

BRITT
000 
WWUS53 KLSX 302153
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
453 PM CDT WED JUL 30 2008

MOC099-187-302215-
/O.CON.KLSX.TO.W.0080.000000T0000Z-080730T2215Z/
ST. FRANCOIS MO-JEFFERSON MO-
449 PM CDT WED JUL 30 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR SOUTHERN 
JEFFERSON AND NORTHERN ST. FRANCOIS COUNTIES...

AT 446 PM CDT...NATIONAL WEATEHR SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM WITH STRONG ROTATION NEAR BONNE TERRE...MOVING 
EAST AT 28 MPH.  A TRAINED SPOTTER HAS OBSERVED ROTATION IN THE BASE 
OF THIS STORM.

LOCATIONS NEAR THE PATH OF THIS DANGEROUS STORM INCLUDE...ST. 
FRANCOIS STATE PARK.

LAT...LON 3791 9064 3808 9064 3816 9039 3805 9040
      3805 9041 3804 9040 3791 9042 3790 9044
TIME...MOT...LOC 2149Z 273DEG 25KT 3797 9049

$$

BRITT
000 
WWUS53 KLSX 302212
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
512 PM CDT WED JUL 30 2008

MOC099-187-302219-
/O.EXP.KLSX.TO.W.0080.000000T0000Z-080730T2215Z/
ST. FRANCOIS MO-JEFFERSON MO-
509 PM CDT WED JUL 30 2008

...THE TORNADO WARNING FOR SOUTHERN JEFFERSON AND NORTHERN ST. 
FRANCOIS COUNTIES EXPIRES AT 515 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNING 
AREA. 

LAT...LON 3791 9064 3808 9064 3816 9039 3805 9040
      3805 9041 3804 9040 3791 9042 3790 9044
TIME...MOT...LOC 2209Z 273DEG 25KT 3796 9031

$$

BRITT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 8:56 PM CDTRiver Flood WarningLSXLewis71 hr
Jul 29, 8:56 PM CDTRiver Flood WarningLSXMarion62 hr
Jul 30, 2:16 AM CDTRiver Flood WarningLSXMarion18 hr
Jul 30, 2:29 AM CDTFlash Flood WarningLSXAudrain, Boone, Monroe, Shelby6 hr
Jul 30, 11:57 AM CDTRiver Flood WarningLSXCallaway, Cole3 days
Jul 30, 11:57 AM CDTRiver Flood WarningLSXFranklin, Warren4 days
Jul 30, 1:55 PM CDTRiver Flood WarningLSXMarion30 hr
Jul 30, 1:55 PM CDTRiver Flood WarningLSXSaint Louis, City of Saint Louis4 days
Jul 30, 3:26 PM CDTTornado WarningLSXCrawford, Washington64 min
Jul 30, 5:03 PM CDTTornado WarningLSXSainte Genevieve, Saint Francois42 min

Nearby

Tornado Warnings in Missouri, 2008Every tornado warning in 2008Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.