Alert archive / Illinois / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 198, NWS St. Louis, MO

May 26, 2000Calhoun County, Greene County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at May 26, 2000, 11:19 PM CDT for Calhoun County, Greene County, Illinois. It was in force for 41 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 26, 2000, 11:19 PM CDT (04:19 UTC)
Expired: May 27, 2000, 12:00 AM CDT
In force: 41 min
Issued by: NWS St. Louis, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Calhoun County, IL, Greene County, IL

The radar

The St Louis radar (KLSX), 80 km from the middle of the area, began a volume at 04:19 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 26, 11:30 PM CDT	Thunderstorm Wind 55 E	White Hall, IL	Thunderstorm wind gusts caused damage across much of White Hall. Numerous trees and power lines were down with virtually the entire town without power for at least 4 hours. One small home was destroyed when a large tree fell on it. Numerous vehicles were damag

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 26, 9:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 4.3 hours before the alert went out and 180 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 715 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 238 m²/s²
0-3 km storm-relative helicity: 505 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

209 
WUUS53 KLSX 270421
SVRSTL
ILC013-061-270500-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1119 PM CDT FRI MAY 26 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GREENE COUNTY IN WEST CENTRAL ILLINOIS
  NORTHERN CALHOUN COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL MIDNIGHT CDT

* AT 1119 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED SEVERE
  THUNDERSTORMS ALONG A LINE EXTENDING FROM 12 MILES NORTHWEST OF
  HILLVIEW TO 12 MILES NORTHWEST OF HAMBURG TO 17 MILES WEST OF
  HAMBURG..MOVING EAST AT 40 MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  HILLVIEW
  HAMBURG
  ELDRED
  KAMPSVILLE
  CARROLLTON
  WHITE HALL
  ROODHOUSE

THIS STORM HAS A HISTORY OF DAMAGING WINDS. TAKE SHELTER IN A STURDY
BUILDING IMMEDIATELY.

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 3954 9058 3936 9085 3922 9075 3924 9019
          3937 9017 3953 9017

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 10:22 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Pike	38 min
May 26, 10:47 PM CDT	Severe Thunderstorm Warning	LSX	Brown, Pike	43 min
May 26, 11:06 PM CDT	Tornado Warning	LSX	Calhoun, Pike	39 min

Nearby

Severe Thunderstorm Warnings in Illinois, 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.