Alert archive / Missouri / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 161, NWS St. Louis, MO

May 18, 2000Reynolds County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 18, 2000, 6:29 PM CDT for Reynolds County, Missouri. It was in force for 46 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: May 18, 2000, 6:29 PM CDT (23:29 UTC)
Expired: May 18, 2000, 7:15 PM CDT
In force: 46 min
Issued by: NWS St. Louis, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Reynolds County, MO

The radar

The St Louis radar (KLSX), 138 km from the middle of the area, began a volume at 23:31 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
May 18, 7:00 PM CDT	Thunderstorm Wind 55 E	Redford, MO	Law enforcement officials reported trees and power lines down along Route K.

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 18, 3:00 PM CDT	Tornado Watch	SPC	6 hr
May 18, 6:00 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.5 hours before the alert went out and 255 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: 1080 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 944 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 364 m²/s²
0-3 km storm-relative helicity: 412 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 12.8

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLSX 182330
SVRSTL
MOC179-190015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
629 PM CDT THU MAY 18 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN REYNOLDS COUNTY IN SOUTHEAST MISSOURI

* UNTIL 715 PM CDT

* AT 629 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
  THUNDERSTORM 6 MILES WEST OF CENTERVILLE..MOVING NORTHEAST AT 50
  MPH.

* TOWNS IN THE PATH...
  CENTREVILLE

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.

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

LAT...LON 3748 9118 3731 9109 3734 9077 3761 9078
          3761 9093 3759 9120

TES/RP/EL

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 3:29 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Warren	46 min
May 18, 4:16 PM CDT	Tornado Warning	LSX	Saint Charles, Saint Louis	29 min
May 18, 4:29 PM CDT	Severe Thunderstorm Warning	LSX	Crawford	46 min
May 18, 4:43 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	47 min
May 18, 5:03 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Washington	42 min
May 18, 5:34 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson	26 min
May 18, 5:53 PM CDT	Severe Thunderstorm Warning	LSX	Saint Louis, City of Saint Louis	22 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; radar from the NEXRAD Level II archive.