Alert archive / Illinois / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 73, NWS St. Louis, MO

April 16, 2000Monroe County, Saint Clair County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 16, 2000, 6:08 PM CDT for Monroe County, Saint Clair County, Illinois. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 16, 2000, 6:08 PM CDT (23:08 UTC)
Expired
Apr 16, 2000, 7:00 PM CDT
In force
52 min
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Monroe County, IL, Saint Clair County, IL

The radar

The St Louis radar (KLSX), 66 km from the middle of the area, began a volume at 23:11 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

Lincoln, IL (KILX), launched 12:00Z, 11.1 hours before the alert went out and 234 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-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2000-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2000-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1031 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
90 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.

000 
WUUS53 KLSX 162308
SVRSTL
ILC133-163-170000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
608 PM CDT SUN APR 16 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MONROE COUNTY ILLINOIS IN SOUTHWESTERN ILLINOIS
  ST CLAIR COUNTY IN SOUTHWESTERN ILLINOIS

* UNTIL 700 PM CDT

* AT 606 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES NORTHWEST OF WATERLOO... MOVING EAST
  AT 25 MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  SMITHTON
  FREEBURG
  WATERLOO



THIS STORM HAS A HISTORY OF DAMAGING HAIL. STAY INSIDE AND AWAY
FROM WINDOWS.



GKS/ST

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 16, 3:29 PM CDTSevere Thunderstorm WarningLSXBrown51 min
Apr 16, 3:46 PM CDTSevere Thunderstorm WarningLSXPike49 min
Apr 16, 4:13 PM CDTSevere Thunderstorm WarningLSXMadison47 min
Apr 16, 4:20 PM CDTSevere Thunderstorm WarningLSXMonroe50 min
Apr 16, 4:34 PM CDTSevere Thunderstorm WarningLSXPike36 min
Apr 16, 5:16 PM CDTSevere Thunderstorm WarningLSXGreene49 min
Apr 16, 6:01 PM CDTSevere Thunderstorm WarningLSXGreene44 min
Apr 16, 6:32 PM CDTSevere Thunderstorm WarningLSXJersey, Madison43 min
Apr 16, 6:46 PM CDTSevere Thunderstorm WarningLSXGreene, Macoupin59 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2000Every 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.