Alert archive / Illinois / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 146, NWS St. Louis, MO

May 22, 1998Jersey County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at May 22, 1998, 4:08 AM CDT for Jersey County, Illinois. It was in force for 47 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
May 22, 1998, 4:08 AM CDT (09:08 UTC)
Expired
May 22, 1998, 4:55 AM CDT
In force
47 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Jersey County, IL

The radar

The St Louis radar (KLSX), 51 km from the middle of the area, began a volume at 09:12 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 watch it was issued in

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

IssuedProductOfficeLasted
May 22, 2:00 AM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 9.1 hours before the alert went out and 191 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 00:00Z on 1998-05-22Temperature 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 00:00Z on 1998-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.19395878Sfc1 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
1615 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
137 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.

588 
WUUS1 KSTL 220909 RRA
SVRSTL
ILC083-220955-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
408 AM CDT FRI MAY 22 1998

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JERSEY COUNTY IN SOUTHWESTERN ILLINOIS

* UNTIL 455 AM CDT

* AT 407 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 5 MILES WEST OF PALMYRA TO
  GREENFIELD TO OLD KANE... MOVING SOUTHEAST AT 35 MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  JERSEYVILLE
  KEMPER

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND GUSTS IN EXCESS OF 60
MPH...DAMAGING HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. MOVE
TO AN INTERIOR ROOM ON THE LOWEST FLOOR OR YOUR HOME OR BUSINESS.
HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE
WATER COVERS THE ROAD.

DM/RP

The office that day

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

IssuedProductOfficeCountiesLasted
May 22, 1:06 AM CDTSevere Thunderstorm WarningLSXJersey64 min
May 22, 1:20 AM CDTSevere Thunderstorm WarningLSXCalhoun65 min
May 22, 1:52 AM CDTSevere Thunderstorm WarningLSXMadison63 min
May 22, 2:12 AM CDTSevere Thunderstorm WarningLSXJersey33 min
May 22, 2:17 AM CDTSevere Thunderstorm WarningLSXAdams48 min
May 22, 2:34 AM CDTSevere Thunderstorm WarningLSXPike61 min
May 22, 2:59 AM CDTTornado WarningLSXPike51 min
May 22, 3:31 AM CDTSevere Thunderstorm WarningLSXCalhoun, Greene64 min
May 22, 3:50 AM CDTSevere Thunderstorm WarningLSXMacoupin65 min
May 22, 4:44 AM CDTSevere Thunderstorm WarningLSXMontgomery51 min
May 22, 5:02 AM CDTSevere Thunderstorm WarningLSXBond48 min
May 22, 5:20 AM CDTSevere Thunderstorm WarningLSXFayette50 min
May 22, 5:40 AM CDTSevere Thunderstorm WarningLSXMarion50 min
May 22, 7:35 AM CDTSevere Thunderstorm WarningLSXAdams35 min
May 22, 8:00 AM CDTSevere Thunderstorm WarningLSXBrown, Pike50 min
May 22, 8:52 AM CDTSevere Thunderstorm WarningLSXGreene, Macoupin33 min
May 22, 9:22 AM CDTSevere Thunderstorm WarningLSXMontgomery48 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1998Every severe thunderstorm warning in 1998

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.