Alert archive / Missouri / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 180, NWS St. Louis, MO

May 24, 2000Callaway County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 24, 2000, 5:24 AM CDT for Callaway County, Missouri. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: May 24, 2000, 5:24 AM CDT (10:24 UTC)
Expired: May 24, 2000, 6:00 AM CDT
In force: 36 min
Issued by: NWS St. Louis, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Callaway County, MO

The radar

The St Louis radar (KLSX), 105 km from the middle of the area, began a volume at 10:28 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

Springfield, MO (KSGF), launched 00:00Z, 10.4 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: 2608 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 1508 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 172 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

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

134 
WUUS53 KLSX 241026
SVRSTL
MOC027-241100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
524 AM CDT WED MAY 24 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 600 AM CDT

* AT 524 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE   
  THUNDERSTORM NEAR FULTON..MOVING SOUTHEAST AT 45 MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  MOKANE
  FULTON
  CARRINGTON
  STEEDMAN
  REFORM
  PORTLAND

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 3893 9199 3879 9212 3866 9188 3872 9166
          3887 9166

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 24, 3:15 AM CDT, 2 hours 9 minutes earlier.

Area forecast discussion, May 24, 3:15 AM CDT, 2 hours 9 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
315 AM CDT WED MAY 24 2000

MODELS SEEM TO VERIFYING WELL AT 06Z AND GENERALLY FOLLOWED THE ETA
FOR THIS FORECAST PACKAGE.  06Z SFC ANALYIS PLACED A FRONT FROM SRN
IL INTO W CNTRL MO WITH A SECONDARY COLD FRONT FROM CNTRL IA BACK INTO
NERN KS.  SCT TSRA KEPT REDEVELOPING ALONG THE FRONT OVER THE FAR
SRN PART OF THE CWFA LAST EVENING...BUT THIS TRENDED ENDED AS LOWER
GATES OF THE BLM PROFILER INDICATE LOW LEVEL FLOW HAS BECOME
PARALLEL WITH THE FRONT SINCE 06Z.  ISOLD TSRA HAVE DEVELOPED IN THE
PAST HALF HOUR OVER W CNTRL MO IN WEAK WARM AIR ADVECTION JUST NORTH
OF THE FRONT.  WILL HANDLE THIS WITH ISOLD WORDING THIS MORNING AS
THE WAA SHOULD GRADUALLY DIMINISH AS 925 MB WINDS ALSO BECOME MORE
PARELLEL TO FRONT. PLAN TO KEEP A CHC POP FOR TSRA IN SRN ZONES
TODAY AS CAPES WILL BE CLOSE TO 2000 J/KG NEAR THE FRONT IN THAT
AREA BY EARLY AFTERNOON.  ELSEWHERE...THE SECONDARY FRONT WILL MOVE
THROUGH MOST OF THE CWFA BY EARLY AFTERNOON.  WHILE DRIER AIR WILL
MOVE IN RIGHT BEHIND THE FRONT...COLD AIR ADVECTION WILL BE
LAGGING.  SATELLITE TRENDS SHOWING MID/HI LEVEL CLOUDS UPSTREAM...
BUT SHOULD NOT BE ENOUGH TO PUT THE BRAKES ON THE STRONG MAY
SUNSHINE.  AS A RESULT WILL GO CLOSE TO THE WARM TEMP GUIDANCE
TODAY.

MID LEVEL SHORTWAVE TROF CURRENTLY OVER S CNTRL CANADA WILL RACE
SEWD THRU THE MIDWEST BY THIS EVENING.  BOTH THE ETA/NGM SHOWING
SOME MID LEVEL MOISTURE THAT MAY ENOUGH FOR BKN CLOUDS TONIGHT OVER
CNTRL AND SRN ZONES.  WILL GO WITH COOLER FWC TEMP GUIDANCE N AND
CLOSER TO FAN CNTRL AND S.  PROXIMITY TO FRONT NEAR THE MO/AR BORDER
WARRANT A CHC POP FOR TSRA OVER SRN ZONES AGAIN TONIGHT AND
THURSDAY.  FRONT WILL MOVE BACK NORTH THURSDAY NIGHT FRIDAY BRINGING
NEXT CHC OF TSRA FOR THE ENTIRE AREA.  FWC/FAN ARE IN REASONABLE
AGREEMENT TOMORROW.

.STL...NONE.

BRITT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 24, 4:43 AM CDT	Severe Thunderstorm Warning	LSX	Boone, Moniteau	32 min
May 24, 5:38 AM CDT	Severe Thunderstorm Warning	LSX	Gasconade, Osage	52 min
May 24, 7:01 AM CDT	Severe Thunderstorm Warning	LSX	Crawford, Washington	59 min
May 24, 7:23 AM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	52 min
May 24, 7:47 AM CDT	Tornado Warning	LSX	Iron	28 min
May 24, 7:58 AM CDT	Severe Thunderstorm Warning	LSX	Madison	47 min
May 24, 8:12 AM CDT	Tornado Warning	LSX	Iron	18 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2000 Every severe thunderstorm warning in 2000

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.