Alert archive / Missouri / Tornado Warnings in 2008

Tornado Warning 81, NWS St. Louis, MO

July 30, 2008Sainte Genevieve County, Saint Francois County, Missouri

NWS St. Louis, MO issued this tornado warning at Jul 30, 2008, 5:03 PM CDT for Sainte Genevieve County, Saint Francois County, Missouri. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 30, 2008, 5:03 PM CDT (22:03 UTC)
Expired
Jul 30, 2008, 5:45 PM CDT
In force
42 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon

Counties Saint Francois County, MO, Sainte Genevieve County, MO

The radar

The St Louis radar (KLSX), 97 km from the middle of the area, began a volume at 22:03 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 12:00Z, 10.1 hours before the alert went out and 279 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 302203
TORLSX
MOC186-187-302245-
/O.NEW.KLSX.TO.W.0081.080730T2203Z-080730T2245Z/

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

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI
  STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI

* UNTIL 545 PM CDT

* AT 459 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 11 MILES WEST OF ROCKY
  RIDGE...OR ABOUT 6 MILES EAST OF BONNE TERRE...MOVING EAST AT 25
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  ROCKY RIDGE...
  BLOOMSDALE...
  WEINGARTEN...
  STE. GENEVIEVE...

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3789 9042 3805 9039 3805 9013 3803 9011
      3802 9010 3796 9000 3792 8998 3791 8998
      3788 8995 3775 9007
TIME...MOT...LOC 2202Z 282DEG 21KT 3795 9042

$$

BRITT
2 follow-up statements
000 
WWUS53 KLSX 302217
SVSLSX

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

MOC187-302224-
/O.CAN.KLSX.TO.W.0081.000000T0000Z-080730T2245Z/
ST. FRANCOIS MO-
514 PM CDT WED JUL 30 2008

...THE TORNADO WARNING FOR NORTHERN ST. FRANCOIS COUNTY IS
CANCELLED...

THE STORM HAS MOVED OUT OF NORTHERN ST. FRANCOIS COUNTY.

LAT...LON 3790 9035 3805 9030 3805 9013 3803 9011
      3796 9000 3792 8998 3791 8998 3788 8995
      3775 9007
TIME...MOT...LOC 2214Z 281DEG 25KT 3793 9030

$$

MOC186-302245-
/O.CON.KLSX.TO.W.0081.000000T0000Z-080730T2245Z/
STE. GENEVIEVE MO-
514 PM CDT WED JUL 30 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR STE. 
GENEVIEVE COUNTY...

AT 512 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM WITH STRONG ROTATION NEAR ROCKY 
RIDGE...OR 12 MILES EAST OF DESLOGE.  ANOTHER ROTATION WAS 
INTENSIFYING JUST WEST OF BLOOMSDALE.  BOTH ROTATIONS WERE MOVING 
EAST AT 29 MPH.

LOCATIONS NEAR THE PATH OF THE TORNADO INCLUDE...ROCKY RIDGE...
BLOOMSDALE...WEINGARTEN...RIVER AUX VASES...STE. GENEVIEVE AND
MINNITH.

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 3790 9035 3805 9030 3805 9013 3803 9011
      3796 9000 3792 8998 3791 8998 3788 8995
      3775 9007
TIME...MOT...LOC 2214Z 281DEG 25KT 3793 9030

$$

BRITT
000 
WWUS53 KLSX 302244
SVSLSX

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

MOC186-302254-
/O.EXP.KLSX.TO.W.0081.000000T0000Z-080730T2245Z/
STE. GENEVIEVE MO-
544 PM CDT WED JUL 30 2008

...THE TORNADO WARNING FOR STE. GENEVIEVE COUNTY EXPIRES AT 545 PM 
CDT...

THE ROTATION WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER 
APPEARED TO BE SEVERE.

ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE...AND A TORNADO WATCH 
REMAINS IN EFFECT UNTIL 1 AM CDT.

LAT...LON 3790 9035 3805 9030 3805 9013 3803 9011
      3796 9000 3792 8998 3791 8998 3788 8995
      3775 9007
TIME...MOT...LOC 2244Z 281DEG 25KT 3789 9004

$$

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, 4:24 PM CDTTornado WarningLSXJefferson, Saint Francois, Washington51 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.