Alert archive / Illinois / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 349, NWS St. Louis, MO

November 10, 1998Macoupin County, Madison County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Nov 10, 1998, 4:10 AM CST for Macoupin County, Madison County, Illinois. It was in force for 65 min. 5 reports 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
Nov 10, 1998, 4:10 AM CST (10:10 UTC)
Expired
Nov 10, 1998, 5:15 AM CST
In force
65 min
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Macoupin County, IL, Madison County, IL

The radar

The St Louis radar (KLSX), 77 km from the middle of the area, began a volume at 10:10 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

TimeReportWhereRemark
Nov 10, 4:20 AM CSTThunderstorm Wind 52Alton, IL
Nov 10, 4:36 AM CSTThunderstorm Wind 56Carlinville, IL
Nov 10, 4:40 AM CSTThunderstorm Wind 52Edwardsville, IL
Nov 10, 4:45 AM CSTThunderstorm Wind 58Nilwood, IL
Nov 10, 4:50 AM CSTThunderstorm Wind 52New Douglas, IL

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.

IssuedProductOfficeLasted
Nov 10, 1:15 AM CSTTornado WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 10.2 hours before the alert went out and 167 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 1998-11-10Temperature 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 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 1998-11-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 561 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
550 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
561 m²/s²
0-3 km storm-relative helicity
703 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.

804 
WUUS1 KSTL 101013 RRA
SVRSTL
ILC117-119-133-163-101115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
410 AM CST TUE NOV 10 1998

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 515 AM CST

* AT 407 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM CARROLLTON SOUTH TO
  JERSEYVILLE...CLAYTON AND HILLSBORO... MOVING EAST AT 50 MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  WATERLOO
  COLUMBIA
  BELLEVILLE
  COLLINSVILLE
  EDWARDSVILLE
  CARLINVILLE



THE PRIMARY SEVERE WEATHER THREAT IS DAMAGING WINDS. MOVE QUICKLY
TO A STURDY BUILDING AND STAY AWAY FROM DOORS AND WINDOWS.

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

GKS/FG

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.

In the hours before

Special weather statement, Nov 10, 3:35 AM CST, 35 minutes before
MOZ019-027-034-035-042-049-050-101230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
335 AM CST TUE NOV 10 1998

...THE TORNADO WATCH HAS BEEN CANCELLED FOR A PORTION OF CENTRAL AND
NORTHEAST MISSOURI...

THE TORNADO WATCH HAS BEEN CANCELLED FOR THE FOLLOWING
COUNTIES...

IN MISSOURI...LEWIS...MARION...RALLS...MONROE...AUDRAIN...CALLAWAY...
AND OSAGE.

SHOWERS WILL CONTINUE ACROSS THE REGION THROUGH THE EARLY MORNING
HOURS. THE THREAT OF SEVERE THUNDERSTORMS OR TORNADOES HAS DIMINISHED
AND NO MORE SEVERE WEATHER IS EXPECTED.
Special weather statement, Nov 10, 3:35 AM CST, 35 minutes before
MOZ019-027-034-035-042-049-050-101230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
335 AM CST TUE NOV 10 1998

...THE TORNADO WATCH HAS BEEN CANCELLED FOR A PORTION OF CENTRAL AND
NORTHEAST MISSOURI...

THE TORNADO WATCH HAS BEEN CANCELLED FOR THE FOLLOWING
COUNTIES...

IN MISSOURI...LEWIS...MARION...RALLS...MONROE...AUDRAIN...CALLAWAY...
AND OSAGE.

SHOWERS WILL CONTINUE ACROSS THE REGION THROUGH THE EARLY MORNING
HOURS. THE THREAT OF SEVERE THUNDERSTORMS OR TORNADOES HAS DIMINISHED
AND NO MORE SEVERE WEATHER IS EXPECTED.

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 10, 1:42 AM CSTTornado WarningLSXCalhoun, Pike48 min
Nov 10, 3:08 AM CSTSevere Thunderstorm WarningLSXAdams, Brown, Pike62 min
Nov 10, 3:29 AM CSTSevere Thunderstorm WarningLSXCalhoun61 min
Nov 10, 3:45 AM CSTSevere Thunderstorm WarningLSXGreene, Jersey65 min
Nov 10, 4:10 AM CSTSevere Thunderstorm WarningLSXMonroe, Saint Clair65 min
Nov 10, 4:38 AM CSTSevere Thunderstorm WarningLSXBond, Montgomery62 min
Nov 10, 5:12 AM CSTSevere Thunderstorm WarningLSXFayette63 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.