Alert archive / Missouri / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 122, NWS St. Louis, MO

May 8, 2000Montgomery County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 8, 2000, 9:10 PM CDT for Montgomery County, Missouri. It was in force for 50 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 8, 2000, 9:10 PM CDT (02:10 UTC)
Expired: May 8, 2000, 10:00 PM CDT
In force: 50 min
Issued by: NWS St. Louis, MO
Area: Whole counties

County Montgomery County, MO

What was reported inside it

Time	Report	Where	Remark
May 8, 9:16 PM CDT	Hail 0.88	Wellsville, MO	The sheriff department reported nickel size hail.

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
May 8, 6:45 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 2.2 hours before the alert went out and 280 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: 2720 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 1120 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

373 
WUUS53 KLSX 090210
SVRSTL
MOC139-090300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
910 PM CDT MON MAY 8 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN MONTGOMERY COUNTY MISSOURI IN EAST CENTRAL MISSOURI

* UNTIL 1000 PM CDT

* AT 908 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES SOUTHWEST OF WELLSVILLE... MOVING
  NORTHEAST AT 35 MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  WELLSVILLE
  MIDDLETOWN
  MONTGOMERY CITY



THE PRIMARY SEVERE WEATHER THREAT IS DAMAGING HAIL. LARGE HAIL CAN
CAUSE EXTENSIVE PROPERTY DAMAGE AN SERIOUS INJURY TO PEOPLE CAUGHT
OUTDOORS. MOVE INSIDE A STURDY BUILDING IMMEDIATELY.

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

GKS/RP/MB

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 8, 3:36 PM CDT, 5 hours 34 minutes earlier.

Area forecast discussion, May 8, 3:36 PM CDT, 5 hours 34 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
335 PM MON MAY 8 2000

WL KP DISC SHORT WITH SVR WX PENDING. MAIN PROBS TO BE ONSET AND
PLACEMENT OF TSRA THIS EVE AND TUE. STG MIDLVL CAP IN PLACE ATTIM
AND QUES IS EXACTLY WHEN IT WILL BREAK. XPCT FIRST CNVCTV DVLPMT IN
NRN ZNS CLOSEST TO FNT AND THEN SPRD S ALG WITH SWD MVMT OF CFNT.
SGT DYNAMICS IN PLACE FOR BOTH SVR ACTVTY OVR NE MO TNGT AND HVY
PCPN EVENT ON TUE. PWS IN EXCESS OF 1.5 IN OVR NRN ZNS FM THIS AFTN
INTO TUE AFTN. FFG PRETTY HI FOR CYS IN NRN ZNS SO WL HOLD OFF ANY
FLASH FLOOD WATCHES BUT NXT SHIFTS WL HAVE TO MONITOR.

MDLS HV CFNT CFNT MOVG INTO CTRL MO BY MDNGT TNGT AND THEN STALLING
AND ADVCTG BACK N ON TUE AS WRM FNT. HVIEST PCPN TO BE TO N OF FNT
WITH STG OVRRNG AND CFNT COMING BACK THRU RGN LT TUE AS SFC LO MVS
NE.

MDL TEMPS SHW COOLER TREND ON TUE FM PREV GUID AND HV ACCEPTED DUE
TO CLDS AND PCPN. WL GO LIKELY IN SERN ZNS ON TUE AND CATEGORICAL IN
WRN AND NRN ZNS VCNTY OF CFNT.

.STL...NONE.

WDB

In the hours before

Local storm report, May 8, 3:38 PM CDT, 5 hours 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
338 PM CDT MON MAY 08 2000

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0202 PM    NASHVILLE                 IL   WIND DAMAGE
05/09/00   WASHINGTON                     TREES DOWNED IN NASHVILLE

0225 PM    SANDOVAL                  IL   WIND DAMAGE
05/09/00   MARION                         TREES DOWNED

0225 PM    ODIN                      IL   WIND DAMAGE
05/09/00   MARION                         TREES DOWNED

0225 PM    CENTRALIA                 IL   1 INCH HAIL
05/09/00   MARION                         NICKEL TO OCCASIONALLY 1
                                          INCH DIAMETER HAIL IN
                                          DOWNTOWN CENTRALIA

0237 PM    SALEM                     IL   WIND DAMAGE
05/09/00   MARION                         8-9 INCH DIAMETER TREES
                                          AND POWER LINES DOWNED BY
                                          HIGH WINDS

0237 PM    SALEM                     IL   .75 INCH HAIL
05/09/00   MARION                         DIME SIZED HAIL

TRUETT

Local storm report, May 8, 4:00 PM CDT, 5 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
400 PM CDT MON MAY 08 2000

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0237 PM    SALEM                     IL   WIND DAMAGE
05/09/00   MARION                         4-5 FT DIAMETER TREE
                                          DOWNED BY HIGH WINDS.
                                          SEVERAL 1-2 FT
                                          DIAMETER TREES ALSO
                                          DOWNED.  FROM MARION CO.
                                          ESDA

TRUETT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 7:08 PM CDT	Severe Thunderstorm Warning	LSX	Boone	52 min
May 8, 7:42 PM CDT	Severe Thunderstorm Warning	LSX	Audrain	48 min
May 8, 7:52 PM CDT	Severe Thunderstorm Warning	LSX	Knox	38 min
May 8, 7:55 PM CDT	Severe Thunderstorm Warning	LSX	Boone	50 min
May 8, 8:08 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway	52 min
May 8, 8:12 PM CDT	Severe Thunderstorm Warning	LSX	Moniteau	48 min
May 8, 8:22 PM CDT	Severe Thunderstorm Warning	LSX	Lewis	53 min
May 8, 8:36 PM CDT	Severe Thunderstorm Warning	LSX	Cole	39 min
May 8, 8:38 PM CDT	Severe Thunderstorm Warning	LSX	Pike, Ralls	52 min
May 8, 9:57 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln	48 min
May 8, 10:38 PM CDT	Severe Thunderstorm Warning	LSX	Moniteau	37 min
May 8, 11:31 PM CDT	Severe Thunderstorm Warning	LSX	Callaway	44 min
May 9, 12:04 AM CDT	Severe Thunderstorm Warning	LSX	Boone, Moniteau	46 min
May 9, 1:01 AM CDT	Severe Thunderstorm Warning	LSX	Cole	44 min
May 9, 1:41 AM CDT	Severe Thunderstorm Warning	LSX	Gasconade	34 min
May 9, 1:49 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Warren	41 min
May 9, 1:19 PM CDT	Severe Thunderstorm Warning	LSX	Madison	36 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.