Alert archive / Illinois / Tornado Warnings in 1996

Tornado Warning 29, NWS St. Louis, MO

May 25, 1996Macoupin County, Montgomery County, Illinois

NWS St. Louis, MO issued this tornado warning at May 25, 1996, 7:45 PM CDT for Macoupin County, Montgomery County, Illinois. It was in force for 45 min. 1 report 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
May 25, 1996, 7:45 PM CDT (00:45 UTC)
Expired
May 25, 1996, 8:30 PM CDT
In force
45 min
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Macoupin County, IL, Montgomery County, IL

The radar

The St Louis radar (KLSX), 104 km from the middle of the area, began a volume at 00:47 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
May 25, 8:00 PM CDTThunderstorm Wind 55Waggoner, 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 nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.8 hours before the alert went out and 138 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 1996-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 1996-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 square meters per square second.193958Sfc1 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
13 J/kg
Mixed-layer CIN
-191 J/kg
Mixed-layer LCL
821 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
195 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 260046
TORSTL
ILC117-135-260130-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
745 PM CDT SAT MAY 25 1996
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  830 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL ILLINOIS
 
   ...EASTERN MACOUPIN COUNTY...NORTHERN MONTGOMERY COUNTY
 
AT 745 PM...NWS DOPPLER RADAR INDICATED A TORNADO NEAR CARLINVILLE.
ALSO...ILLINOIS STATE POLICE CONFIRMED THIS TORNADO. IT WAS MOVING EAST
AT 20 MPH AND WILL AFFECT THE COMMUNITIES OF WOMAC...ATWATER...AND
BARNETT.
 
 
A TORNADO IS ON THE GROUND. IF YOU ARE IN THE PATH...SEEK SHELTER
NOW!
 
FERRY/METZE
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
May 25, 7:00 PM CDTSevere Thunderstorm WarningLSXGreene, Jersey, Macoupin60 min
May 25, 7:09 PM CDTSevere Thunderstorm WarningLSXMadison, Saint Clair66 min
May 25, 7:38 PM CDTSevere Thunderstorm WarningLSXMontgomery67 min
May 25, 7:40 PM CDTSevere Thunderstorm WarningLSXClinton65 min
May 25, 8:01 PM CDTSevere Thunderstorm WarningLSXBond44 min
May 25, 8:40 PM CDTSevere Thunderstorm WarningLSXMarion60 min
May 25, 8:40 PM CDTSevere Thunderstorm WarningLSXFayette50 min
May 25, 8:45 PM CDTTornado WarningLSXMarion45 min

Nearby

Tornado Warnings in Illinois, 1996Every tornado warning in 1996Tornadoes in 1996

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.