Alert archive / Missouri / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 138, NWS St. Louis, MO

April 2, 2006Crawford County, Franklin County, Washington County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 2, 2006, 3:54 PM CDT for Crawford County, Franklin County, Washington County, Missouri. It was in force for 66 min. 15 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: Apr 2, 2006, 3:54 PM CDT (20:54 UTC)
Expired: Apr 2, 2006, 5:00 PM CDT
In force: 66 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

Counties Crawford County, MO, Franklin County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 64 km from the middle of the area, began a volume at 20:58 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
Apr 2, 4:05 PM CDT	HAIL 0.75	Gerald, MO
Apr 2, 4:05 PM CDT	HAIL 1.75	Cuba, MO
Apr 2, 4:05 PM CDT	NON-TSTM WND DMG	7 E St. Clair, MO	6 TO 8 INCH DIAMETER CEDAR TREES BLOWN OVER
Apr 2, 4:12 PM CDT	HAIL 1.75	Cuba, MO
Apr 2, 4:15 PM CDT	HAIL 0.75	3 W Gerald, MO
Apr 2, 4:15 PM CDT	HAIL 0.88	Bourbon, MO
Apr 2, 4:15 PM CDT	HAIL 0.88	New Haven, MO	MARBLE SIZED TO GRAPE SIZED HAIL
Apr 2, 4:20 PM CDT	TSTM WND DMG	1 N Courtois, MO	A SWATH OF 20 TO 30 TREES WAS BLOWN DOWM NEAR COUNTY ROAD 653 ABOUT 1/2 TO 1 MILE NORTH OF COURTOIS.
Apr 2, 4:35 PM CDT	HAIL 0.88	4 Sw Potosi, MO
Apr 2, 4:35 PM CDT	HAIL 1	15 S Sullivan, MO
Apr 2, 4:37 PM CDT	TSTM WND DMG	Potosi, MO	TREES DOWN, POWER OUT...ALSO NICKEL SIZE HAIL
Apr 2, 4:40 PM CDT	HAIL 1.25	11 Nw Potosi, MO
Apr 2, 4:45 PM CDT	TSTM WND DMG	5 Ene Belgrade, MO	LARGE TREES DOWN
Apr 2, 4:50 PM CDT	HAIL 0.75	5 Se Potosi, MO	ALSO GUSTS TO 50 MPH
Apr 2, 4:55 PM CDT	HAIL 1	Richwoods, MO

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 8 storm reports to this severe thunderstorm warning; the first came 11 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 2, 12:28 PM CDT	Tornado Watch	SPC	8 hr
Apr 2, 3:50 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 8.9 hours before the alert went out and 276 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: 190 J/kg
Mixed-layer CIN: -190 J/kg
Mixed-layer LCL: 1069 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 342 m²/s²
0-3 km storm-relative helicity: 358 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLSX 022054
SVRLSX
MOC055-071-221-022200-
/O.NEW.KLSX.SV.W.0138.060402T2054Z-060402T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
354 PM CDT SUN APR 2 2006

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CRAWFORD COUNTY IN EAST CENTRAL MISSOURI
  FRANKLIN COUNTY IN EAST CENTRAL MISSOURI
  WASHINGTON COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 500 PM CDT

* AT 353 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING GOLF BALL SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 14 MILES NORTHWEST OF NEW HAVEN
  TO 15 MILES SOUTHWEST OF GERALD TO 34 MILES SOUTHWEST OF
  CHERRYVILLE...OR ALONG A LINE EXTENDING FROM HERMANN TO 6 MILES
  SOUTH OF OWENSVILLE TO 14 MILES SOUTHWEST OF SALEM...AND MOVING
  NORTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GERALD...
  CUBA...
  STEELVILLE...
  NEW HAVEN...
  LEASBURG...
  BOURBON...
  BEAUFORT...
  SULLIVAN...
  CHERRYVILLE...
  WASHINGTON...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 3870 9134 3846 9139 3821 9146 3778 9152
      3777 9115 3774 9067 3854 9078 3863 9110

$$

CVKING

1 follow-up statement

000 
WWUS53 KLSX 022110
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
411 PM CDT SUN APR 2 2006

MOC055-071-221-022200-
/O.CON.KLSX.SV.W.0138.000000T0000Z-060402T2200Z/
WASHINGTON MO-CRAWFORD MO-FRANKLIN MO-
411 PM CDT SUN APR 2 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR FRANKLIN...CRAWFORD AND WASHINGTON COUNTIES...

AT 407 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH FROM BERGER TO 6 MILES SOUTHEAST OF COOK
STATION...MOVING EAST AT 45 MPH.

LOCATIONS NEAR THE PATH OF SEVERE THUNDERSTORMS INCLUDE...
STANTON...DAVISVILLE...ANTHONIES MILL...WASHINGTON...UNION...ST.
CLAIR...PARKWAY...PINEY PARK...MOSELLE AND VILLA RIDGE.

TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.

LAT...LON 3870 9134 3846 9139 3821 9146 3778 9152
      3777 9115 3774 9067 3854 9078 3863 9110

$$

CVKING

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS St. Louis, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 2, 1:49 PM CDT, 2 hours 5 minutes earlier.

Area forecast discussion, Apr 2, 1:49 PM CDT, 2 hours 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
149 PM CDT SUN APR 2 2006

.DISCUSSION...
SURFACE LOW WAS LOCATED OVER THE SOUTHWEST CORNER OF IA EARLY THIS
AFTERNOON WITH WARM FRONT DRAPED ACROSS NORTH MO. SURFACE
DEWPOINTS HAVE INCREASED INTO LOWER 60S ACROSS MOST OF THE
FORECAST AREA. THE LAPS DATA FROM 18Z INDICATED CAPES HAVE
INCREASED TO 2500 J/KG ACROSS CENTRAL MO WITH THE CIN LESS THAN
40. LIS ARE AROUND -9. MSAS SURFACE MOISTURE CONVERGENCE EXTENDED
FROM CENTRAL MO INTO THE EASTERN OZARKS AT SAME TIME.

STRONG H5 SHORT WAVE WILL ROLL ACROSS THE AREA TONIGHT. MODELS
FORECAST A 160 METER HEIGHT FALL CENTER OVER NORTHERN INDIANA BY 12Z
MONDAY. RIDGE BUILDS FROM THE GREAT PLAINS INTO THE AREA BY
WEDNESAY. THE GFS CLOSES OFF AN UPPER LOW OVER WY EARLY THURSDAY
WITH SYSTEM FORECAST TO MOVE SLOWLY INTO THE MIDWEST BY LATE IN THE
WEEK. THE GFS IS COMING AROUND TO THE EUROPEAN SOLUTION FROM LAST
EVENINGS RUN.

PLAYING A WAITING GAME FOR CONVECTION TO DEVELOP ACROSS THE WESTERN
PORTION OF THE FORECAST AREA. TORNADO WATCH REMAINS IN EFFECT UNTIL
800 PM CDT. NEXT BEST CHANCE OF RAIN RETURNS TO THE AREA BY EARLY
WEDNESDAY. THE UKMET AND NAM FORECAST SIGNIFICANT 850 MOISTURE
CONVERGENCE INTO CENTRAL AND SOUTH MO BY THAT TIME WITH DECENT UPPER
DIVERGENCE.

&&

.AVIATION...
FOR THE 18Z TAFS...
SFC LOW OVER THE NORTHWEST CORNER OF MISSOURI WITH A WARM FRONT
INTO E CENTRAL MISSOURI AND A COLD FRONT/DRY LINE SOUTHWEST INTO
SOUTHEAST KANSAS.  THUNDERSDTORMS ARE FORECAST TO DEVELOP ALONG
AND AHEAD OF THE DRYLINE/COLDFRONT. SEVERAL STORMS COULD BECOME
SEVERE AND THEY SHOULD FORM AS DESCRETE STORMS AND EVOLVE INTO
A DANDY SQUALL LINE WHICH WILL MOVE EAST NORTHEAST AT 45 KNOTS
OR MORE.  HAVE A 4 HOUR WINDOW OF STORMS IN THE TAFS.  LATER...
MOISTURE WRAPS AROUND THE BACK SIDE OF THE SURFACE LOW AND DROPS
SOUTHEAST ACROSS ALL THE TAF SITES DURING THE EVENING...FIRST
AT QUINCY...THEN COLUMBIA...AND FINALLY IN THE ST LOUIS AREA
AFTER MIDNIGHT. OH...I HAVE LOW LEVEL WIND SHEAR IN THE ST LOUIS
AREA FOR A COUPLE OF HOURS.  WINDS AT 2 TO 4 THOUSAND FEET ARE 40
KNOTS OR MORE WHILE THE SURFACE WINDS ARE REMAINING BLO 10 KTS.

HOT AIR BALLOONISTS....TOO MUCH WIND TODAY AND RISK FOR SEVERE
STORMS...TOO MUCH GRADIENT AGAIN THROUGH TOMORROW AS WELL.

PEDIGO

&&

.LSX WATCHES/WARNINGS/ADVISORIES...
MO...NONE.
IL...NONE.
&&

WFO LSX

Hazardous weather outlook, Apr 2, 2:57 PM CDT, 57 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
257 PM CDT SUN APR 2 2006

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-031200-
ADAMS IL-AUDRAIN-BOND IL-BOONE-BROWN IL-CALHOUN IL-CALLAWAY-
CLINTON IL-COLE-CRAWFORD-FAYETTE IL-FRANKLIN-GASCONADE-GREENE IL-
IRON-JEFFERSON-JERSEY IL-KNOX-LEWIS-LINCOLN-MACOUPIN IL-MADISON-
MADISON IL-MARION-MARION IL-MONITEAU-MONROE-MONROE IL-MONTGOMERY-
MONTGOMERY IL-OSAGE-PIKE-PIKE IL-RALLS-RANDOLPH IL-REYNOLDS-
SHELBY-ST. CHARLES-ST. CLAIR IL-ST. FRANCOIS-ST. LOUIS-
ST. LOUIS CITY-STE. GENEVIEVE-WARREN-WASHINGTON-WASHINGTON IL-
257 PM CDT SUN APR 2 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND
CENTRAL MISSOURI AS WELL AS SOUTHWEST ILLINOIS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A MODERATE RISK FOR SEVERE THUNDERSTORMS THIS AFTERNOON
AND EVENING FOR MOST OF EASTERN MISSOURI AND SOUTHERN ILLINOIS.

A SIGNIFICANT SEVERE WEATHER OUTBREAK WILL TAKE PLACE THROUGH THIS
EVENING. A COOL FRONT WILL MOVE EAST ACROSS THE AREA ACTING ON
WARM MOIST AND VERY UNSTABLE AIR. SUPERCELL THUNDERSTORMS WILL
DOT THE AREA. SOME OF THE STRONGER STORMS COULD PRODUCE BASEBALL
SIZED HAIL...DAMAGING WIND GUSTS IN EXCESS OF 60 MPH AND POSSIBLE
A FEW TORNADOES.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

ANOTHER STORM SYSTEM WILL FORM OVER THE CENTRAL PLAINS BY
MIDWEEK BRINGING ANOTHER THREAT FOR THUNDERSTORMS WEDNESDAY
THROUGH THURSDAY NIGHT. ONCE AGAIN SEVERE STORMS ARE A POSSIBILITY
ON THURSDAY. KEEP ABREAST OF LATEST FORECASTS DURING THAT TIME PERIOD.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS WILL DEFINITELY BE NEEDED THROUGH MID EVENING.  IF YOU
HAVE NOT BEEN CALLED YET...CHECK WITH THOSE GROUPS YOU NORMALLY
WORK WITH...YOU WILL LIKELY BE NEEDED. MEDIA SHOULD BE PREPARED
FOR AN ESPECIALLY BUSY EVENT FROM 300 PM THROUGH 900 PM THIS
EVENING.  THE HIGHEST THREAT IS HAIL...BUT OTHER SEVERE WEATHER
PARAMETERS ARE ALSO POSSIBLE.

PEDIGO

In the hours before

Local storm report, Apr 2, 3:44 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
344 PM CDT SUN APR 02 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0341 PM     HAIL             3 E LINN                38.48N 91.79W
04/02/2006  E0.88 INCH       OSAGE              MO   TRAINED SPOTTER

            DIME TO NICKEL SIZED HAIL ON HWY CC EAST OF LINN

&&

JPEDIGO

Local storm report, Apr 2, 3:46 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
346 PM CDT SUN APR 02 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0341 PM     HAIL             4 NNW MEXICO            39.22N 91.90W
04/02/2006  E0.88 INCH       AUDRAIN            MO   TRAINED SPOTTER

&&

JPEDIGO

Local storm report, Apr 2, 3:48 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
348 PM CDT SUN APR 02 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0341 PM     HAIL             1 ENE WELLSVILLE        39.08N 91.55W
04/02/2006  E0.88 INCH       MONTGOMERY         MO   TRAINED SPOTTER

&&

JPEDIGO

Local storm report, Apr 2, 3:50 PM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
350 PM CDT SUN APR 02 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0346 PM     TSTM WND GST     RUSSELLVILLE            38.51N 92.44W
04/02/2006  E0 MPH           COLE               MO   LAW ENFORCEMENT

            WINDS 50 TO 55 MPH...PEA TO HALF INCH HAIL

&&

JPEDIGO

Local storm report, Apr 2, 3:53 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
353 PM CDT SUN APR 02 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0349 PM     HAIL             WELLSVILLE              39.07N 91.57W
04/02/2006  E0.75 INCH       MONTGOMERY         MO   LAW ENFORCEMENT

&&

JPEDIGO

Local storm report, Apr 2, 3:54 PM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
354 PM CDT SUN APR 02 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0350 PM     HAIL             GASCONADE               38.67N 91.56W
04/02/2006  E1.00 INCH       GASCONADE          MO   TRAINED SPOTTER

&&

JPEDIGO

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 2, 2:50 PM CDT	Severe Thunderstorm Warning	LSX	Callaway	40 min
Apr 2, 3:01 PM CDT	Severe Thunderstorm Warning	LSX	Audrain	38 min
Apr 2, 3:07 PM CDT	Severe Thunderstorm Warning	LSX	Osage	38 min
Apr 2, 3:15 PM CDT	Severe Thunderstorm Warning	LSX	Knox, Monroe, Shelby	60 min
Apr 2, 3:23 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Moniteau	41 min
Apr 2, 3:26 PM CDT	Severe Thunderstorm Warning	LSX	Gasconade	49 min
Apr 2, 3:29 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Montgomery	46 min
Apr 2, 3:55 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike	50 min
Apr 2, 3:59 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	46 min
Apr 2, 3:59 PM CDT	Severe Thunderstorm Warning	LSX	Warren	46 min
Apr 2, 4:05 PM CDT	Severe Thunderstorm Warning	LSX	Lewis, Marion	40 min
Apr 2, 4:20 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Charles, Saint Louis, City of Saint Louis	70 min
Apr 2, 4:26 PM CDT	Severe Thunderstorm Warning	LSX	Marion, Ralls	49 min
Apr 2, 4:42 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	48 min
Apr 2, 4:44 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln	33 min
Apr 2, 4:46 PM CDT	Tornado Warning	LSX	Iron, Madison, Saint Francois	44 min
Apr 2, 4:46 PM CDT	Tornado Warning	LSX	Ralls	37 min
Apr 2, 4:51 PM CDT	Tornado Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	39 min
Apr 2, 4:52 PM CDT	Severe Thunderstorm Warning	LSX	Saint Francois	38 min
Apr 2, 4:55 PM CDT	Severe Thunderstorm Warning	LSX	Pike	24 min
Apr 2, 4:56 PM CDT	Tornado Warning	LSX	Iron, Reynolds	49 min
Apr 2, 5:03 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	42 min
Apr 2, 5:17 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	29 min
Apr 2, 5:29 PM CDT	Severe Thunderstorm Warning	LSX	Madison	27 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2006 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.