Alert archive / Missouri / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 279, NWS St. Louis, MO

June 25, 2000Audrain County, Boone County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 25, 2000, 9:58 PM CDT for Audrain County, Boone County, Missouri. It was in force for 62 min. 1 report came from 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, with what was reported inside it.

The facts

Issued: Jun 25, 2000, 9:58 PM CDT (02:58 UTC)
Expired: Jun 25, 2000, 11:00 PM CDT
In force: 62 min
Issued by: NWS St. Louis, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Audrain County, MO, Boone County, MO

What was reported inside it

Time	Report	Where	Remark
Jun 25, 10:30 PM CDT	Thunderstorm Wind 56 E	Columbia, MO	Thunderstorm wind gusts downed trees and power lines. Some signs were blown down and a couple of homes damaged by falling trees.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 25, 8:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 3.0 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-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: 1359 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 1481 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 77 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 260301
SVRSTL
MOC007-019-260400-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
958 PM CDT SUN JUN 25 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN AUDRAIN COUNTY IN CENTRAL MISSOURI
  BOONE COUNTY IN CENTRAL MISSOURI

* UNTIL 1100 PM CDT

* AT 958 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A LINE OF SEVERE THUNDERSTORMS FROM BOONVILLE TO JUST SOUTHEAST OF 
  MOBERLY MOVING EAST AT 25 MPH.

* LOCATIONS IN THE PATH...
  MIDWAY
  COLUMBIA
  ASHLAND
  HARRISBURG
  CENTRALIA
  HALLSVILLE
  
THE PRIMARY THREAT POSED BY THIS STORM IS DAMAGING WINDS. MOVE
QUICKLY TO THE INTERIOR PORTION OF A STURDY SHELTER...AND STAY AWAY
FROM OUTSIDE WALLS AND WINDOWS.

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 3926 9245 3898 9257 3864 9224 3881 9216
          3907 9214 3907 9191 3935 9186 3935 9232

GKS/RP

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 Jun 25, 3:45 PM CDT, 6 hours 13 minutes earlier.

Area forecast discussion, Jun 25, 3:45 PM CDT, 6 hours 13 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
345 PM CDT SUN JUN 25 2000

LKS LIKE WE CAN ONLY GET ABT 24 HRS OF TRANQUIL WX...AS NXT ROUND OF
STMS HV ALREADY FORMED OVR E NE/W IA.  CORFIDI VECTORS FROM ALL 3
MDLS ARE ALL POINTING TO A PRONOUCED SSE PROPAGATION OF STORMS DURG
THE OVRNGT HRS...WHICH WL ALLOW STMS TO INGEST AMS THAT CURRENLY HAS
LIS RUNNING FROM -10 TO -13 AND CAPES IN THE 3000-5000 J/KG RANGE.
THINK ETA QPF HAS AMTS RIGHT...BUT NOT AT ALL CERTAIN ABT THE
ORIENTATION WHICH KPS MAX RAINS OVR KS.  NGM IS CERTAINLY MORE
CORRECT WITH ONGOING CNVTN OVR OK...AND NOTICED THAT IT TENDS TO
SHIFT BULLSEYE MORE EWD INTO W MO. STM MOTION VECTORS ASSOC WITH
ONGOING STMS WULD SUPPORT THIS...AS WULD SUBTLE BUT SGFNT 85H
THERMAL GRADIENT WHICH IS DRAPED OVR W MO ATTM.

WITH INSTABILITIES SO GRT...PWS OF 1.5 TO 2.0...AND WITH SATURATED
GND FROM RECENT RAINS...AM CONCERNED THAT THIS MAY BE A VRY DANGEROUS
EVENT DURG THE OVRNGT HRS.  WL ISSUE FFA FOR NW PARTS OF CWFA FOR
TNGT DUE TO THIS THRT...GENLY ALG AND W OF A UIN-JEF LN.  HVIST RAIN
THRT IN OUR FA CERTAINLY APRS TO BE CNTRL MO...BUT WITH SUCH LO FFG
VALUES OVR NE DUE TO FRI NGTS/SAT RAINS...WL XTND WATCH INTO THIS
AREA AS WELL.

MDLS ARE IN GENL AGREEMENT THAT SVRL TROFS WL BE PASSING THRU CNTRL
U.S. OVR THE NXT 36 HRS...ALLOWING CDFNT OVR PLAINS TO DROP ACR FA.
12Z RUNS FOLLOWING CLOSELY WITH PREV RUNS IN PLACING FNT VCNTY OF
UIN-CNU LN BY 12Z...AND INTO SE MO BY MON EVE.  CHC POPS GIVEN BY
MOS SEEM A LTL LO ACR AREA ON MON...HWVR IF STMS BCM OUTFLO DOMINATED
THESE NUMBERS MAY BE MORE CORRECT. OVRALL...PCPN SHUD WIND DOWN FROM
N TO S DURING THE DAY MON...WITH LAST OF THE RAIN EXITING S AREAS
MON EVE.

NOW APRS FNT WL DROP FAR ENUF S TO MAKE TUE A DRY DAY...BFR NXT
SHTWV ROTATES THRU MEAN TROF PSTN OVR CNTRL U.S. AND GENERATES
ANOTHER ROUND OF RAIN FOR MID WEEK.

AS ALWAYS THIS TIME OF YR...TEMPS WL BE STGLY INFLUENCED BY TSTM
ACTIVITY...BUT IN GENL GOING FCSTS STILL LK TO BE A GD FIRST ESTIMATE.

.STL...FFA TNGT ALG-W OF A UIN-JEF LN
TRUETT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 8:49 PM CDT	Severe Thunderstorm Warning	LSX	Knox	41 min
Jun 25, 9:14 PM CDT	Severe Thunderstorm Warning	LSX	Shelby	61 min
Jun 25, 9:19 PM CDT	Severe Thunderstorm Warning	LSX	Monroe	41 min
Jun 25, 9:32 PM CDT	Severe Thunderstorm Warning	LSX	Knox, Lewis	58 min
Jun 25, 10:02 PM CDT	Severe Thunderstorm Warning	LSX	Marion	43 min
Jun 25, 10:11 PM CDT	Tornado Warning	LSX	Marion	34 min
Jun 25, 10:28 PM CDT	Severe Thunderstorm Warning	LSX	Moniteau	62 min
Jun 25, 10:37 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Cole	53 min
Jun 25, 10:37 PM CDT	Severe Thunderstorm Warning	LSX	Audrain	53 min
Jun 25, 10:50 PM CDT	Severe Thunderstorm Warning	LSX	Pike, Ralls	40 min
Jun 25, 11:13 PM CDT	Severe Thunderstorm Warning	LSX	Osage	47 min
Jun 25, 11:17 PM CDT	Tornado Warning	LSX	Pike	43 min
Jun 25, 11:24 PM CDT	Severe Thunderstorm Warning	LSX	Montgomery	66 min
Jun 25, 11:32 PM CDT	Severe Thunderstorm Warning	LSX	Gasconade, Warren	43 min
Jun 25, 11:32 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln	43 min
Jun 25, 11:59 PM CDT	Tornado Warning	LSX	Lincoln, Pike	46 min
Jun 26, 12:14 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Lincoln, Saint Charles, Warren	61 min
Jun 26, 12:14 AM CDT	Severe Thunderstorm Warning	LSX	Gasconade	61 min
Jun 26, 12:55 AM CDT	Severe Thunderstorm Warning	LSX	Saint Charles	65 min
Jun 26, 12:55 AM CDT	Severe Thunderstorm Warning	LSX	Saint Louis	65 min
Jun 26, 1:34 AM CDT	Severe Thunderstorm Warning	LSX	Jefferson	41 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.