Alert archive / Missouri / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 144, NWS St. Louis, MO

May 14, 2003Boone County, Callaway County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 14, 2003, 8:46 PM CDT for Boone County, Callaway County, Missouri. It was in force for 44 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: May 14, 2003, 8:46 PM CDT (01:46 UTC)
Expired: May 14, 2003, 9:30 PM CDT
In force: 44 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

Counties Boone County, MO, Callaway County, MO

The radar

The St Louis radar (KLSX), 135 km from the middle of the area, began a volume at 01:49 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.8 hours before the alert went out and 272 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: 2153 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 736 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 4.8

Open this sounding in Storm Lab

The text

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

314 
WUUS53 KLSX 150146
SVRLSX
MOC019-027-150230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
845 PM CDT WED MAY 14 2003

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BOONE COUNTY IN CENTRAL MISSOURI
  NORTHWESTERN CALLAWAY COUNTY IN CENTRAL MISSOURI

* UNTIL 930 PM CDT

* AT 845 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER MURRY...MOVING SOUTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NORTHEAST SIDE OF COLUMBIA
  MILLERSBURG
  FULTON 
  
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.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

LAT...LON 3913 9231 3897 9242 3878 9203 3897 9189

$$

TRUETT

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 May 14, 4:00 PM CDT, 4 hours 46 minutes earlier.

Area forecast discussion, May 14, 4:00 PM CDT, 4 hours 46 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
400 PM CDT WED MAY 14 2003

AT 20Z...WK CDFNT FM NR PIA-AIZ-SERN KS.  STG VORT MX TWIRLING ARND
UPR MIDWEST...NR FSD...AND IS MOVG SEWD.

IN THE NR-TERM...WEAK CAP ACRS SRN FA AND APPCHG CDFNT MAY SPARK AN
ISOLD TSTM ERL THIS EVNG.  LTL IN THE WAY OF SUPPORT OTR THAN
THAT...SO DO NOT XPCT ANYTHING THAT DOES DVLP THERE TO LAST LONG AFT
SS.  TO OUR N...STG TSTMS OVR IA AHD OF VORT MX ARE XPCT TO SUBSIDE
ARND/AFT SS AS THEY ARE STGLY DIURNALLY DEPENDENT.  STILL...AS VORT
MX MOVS THRU DURG OVRNGT HRS...WL LEAVE A CHC OF SHRA/TSRA.  AT THIS
TIME...DO NOT SEE MUCH OF A CHC OF SVR TSTMS AFT SS.

FOR THU...WL LEAVE CHC OF PCPN FOR AREAS S AND E OF STL DURG ERL
MRNG...OTRW...PTSUNNY/MOCLDY DAY ON TAP AS MUCH OF SFC MOISTURE RMNS
BHND CDFNT AS HI PRES THAT BLDS IN BHND IT MUCH TOO WK TO INFLUENCE
DWPTS MUCH.  LOOK FOR FAIR AMNT OF DIURNAL CU TO DVLP ACRS FA.
SIDED WITH COOLER MAV NUMBERS DUE TO XPCTD CLD CVR AND SOMEWHAT
COOLER AMS BLDG IN BHND FNT.

FOR THU NGT/FRI...ATTN THEN TURNS TO APPCHG UPR LO...COMG FM THE
SWRN CONUS.  LOOK FOR INCRSG MID-HI CLDNSS THAT MAY MESS UP VIEWING
OPPORTUNITIES FOR THE LUNAR ECLIPSE.  RAIN CHCS APPEAR TO HOLD OFF
TIL AFT SR FRI MRNG...AND WITH ABUNDANT CLDS AND RAIN DURG FRI...
HVLY SIDED WITH COOLER MAV FOR MAX TEMPS.

IN THE EXTDD...WX QUIETS DOWN ONCE UPR LO EXITS ON SAT NGT/ERL
SUN...WITH NXT CHC OF PCPN NOT UNTIL TUE/TUE NGT AS ANOTR CDFNT MOVS
THRU.  FAVOR ECMWF SPD ON CDFNT WHICH BRINGS IT THRU FASTER THAN
GFS...MORE DURG TUE MRNG THAN AFTN.  COOL PAC HI PRES WL THEN
DOMINATE WX FOR WED AND INTO LATE NXT WK.

.STL...NONE.
TES

Hazardous weather outlook, May 14, 2:10 PM CDT, 6 hours 36 minutes before

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-151800-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
210 PM CDT WED MAY 14 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND EASTERN MISSOURI
AND WEST CENTRAL AND SOUTHWEST ILLINOIS.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER ALL OF
CENTRAL AND EASTERN MISSOURI AND SOUTHWEST ILLINOIS THIS AFTERNOON
AND EVENING. THE THREAT WILL BE LARGE HAIL AND DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A CHANCE OF THUNDERSTORMS EARLY THURSDAY ACROSS PORTIONS OF
SOUTHEAST MISSOURI AND SOUTHERN ILLINOIS.  AFTER A BRIEF BREAK IN
THE WEATHER THE REMAINDER OF THURSDAY AND THURSDAY NIGHT...THE
CHANCE FOR THUNDERSTORMS WILL RESUME FRIDAY AND CONTINUE THROUGH
SATURDAY AS ANOTHER STORM SYSTEM MOVES OUT OF THE SOUTHWESTERN
UNITED STATES.

A COLD FRONT DROPPING SOUTHEASTWARD WILL PROVIDE FOR A CHANCE OF
THUNDERSTORMS AGAIN ON TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

&&

MORE INFORMATION MAY BE OBTAINED AT...
HTTP://WWW.CRH.NOAA.GOV/LSX (ALL LOWER CASE)

WDB/TES

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 7:24 PM CDT	Severe Thunderstorm Warning	LSX	Marion, Pike, Ralls	36 min
May 14, 8:06 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	39 min
May 14, 8:19 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	56 min
May 14, 9:03 PM CDT	Severe Thunderstorm Warning	LSX	Madison	57 min
May 14, 9:16 PM CDT	Severe Thunderstorm Warning	LSX	Iron	44 min
May 14, 9:22 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	23 min
May 14, 9:37 PM CDT	Severe Thunderstorm Warning	LSX	Reynolds	23 min
May 14, 10:12 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	33 min
May 14, 11:57 PM CDT	Flash Flood Warning	LSX	Iron, Madison	5 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2003 Every severe thunderstorm warning in 2003

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.