Alert archive / Illinois / Tornado Watches in 1997

Tornado Watch 113

March 28, 19974 states

The Storm Prediction Center issued this tornado watch at Mar 28, 1997, 2:15 PM CST for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 28, 1997, 2:15 PM CST (20:15 UTC)
Expired
Mar 28, 1997, 8:00 PM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 85 counties

Alexander County, IL, Bond County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Gallatin County, IL, Greene County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Johnson County, IL, Lawrence County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Massac County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Saline County, IL, Sangamon County, IL, Scott County, IL, Shelby County, IL, Union County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Posey County, IN, Vermillion County, IN, Vigo County, IN, Ballard County, KY, Calloway County, KY, Carlisle County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Livingston County, KY, Marshall County, KY, McCracken County, KY, Union County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, City of Saint Louis, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Washington County, MO, Wayne County, MO

The radar

The St Louis radar (KLSX), 122 km from the middle of the area, began a volume at 20:14 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.

Warnings issued inside it

36 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Mar 28, 2:27 PM CSTSevere Thunderstorm WarningLSXRandolph48 min
Mar 28, 2:38 PM CSTSevere Thunderstorm WarningLSXSaint Charles52 min
Mar 28, 2:45 PM CSTSevere Thunderstorm WarningLSXMadison, Saint Clair45 min
Mar 28, 2:46 PM CSTSevere Thunderstorm WarningLSXMadison, Saint Francois44 min
Mar 28, 2:52 PM CSTSevere Thunderstorm WarningLSXSaint Clair, Washington53 min
Mar 28, 3:12 PM CSTSevere Thunderstorm WarningPAHPerry33 min
Mar 28, 3:18 PM CSTSevere Thunderstorm WarningILXLogan, Sangamon57 min
Mar 28, 3:20 PM CSTSevere Thunderstorm WarningLSXWashington40 min
Mar 28, 3:27 PM CSTSevere Thunderstorm WarningLSXMacoupin48 min
Mar 28, 3:37 PM CSTSevere Thunderstorm WarningPAHJefferson38 min
Mar 28, 3:51 PM CSTSevere Thunderstorm WarningPAHPerry39 min
Mar 28, 3:54 PM CSTSevere Thunderstorm WarningILXChristian36 min
Mar 28, 4:02 PM CSTSevere Thunderstorm WarningLSXClinton, Marion43 min
Mar 28, 4:06 PM CSTSevere Thunderstorm WarningILXMacon54 min
Mar 28, 4:09 PM CSTSevere Thunderstorm WarningPAHJackson36 min
Mar 28, 4:15 PM CSTSevere Thunderstorm WarningLSXFayette45 min
Mar 28, 4:18 PM CSTSevere Thunderstorm WarningPAHJefferson27 min
Mar 28, 4:32 PM CSTSevere Thunderstorm WarningINDVigo43 min
Mar 28, 4:37 PM CSTSevere Thunderstorm WarningILXEffingham53 min
Mar 28, 4:37 PM CSTSevere Thunderstorm WarningPAHHamilton, Wayne53 min
Mar 28, 4:40 PM CSTSevere Thunderstorm WarningPAHCape Girardeau35 min
Mar 28, 4:54 PM CSTSevere Thunderstorm WarningPAHJackson, Williamson51 min
Mar 28, 5:00 PM CSTSevere Thunderstorm WarningILXShelby30 min
Mar 28, 5:06 PM CSTSevere Thunderstorm WarningPAHPulaski24 min
Mar 28, 5:12 PM CSTTornado WarningILXColes, Cumberland33 min
Mar 28, 5:14 PM CSTSevere Thunderstorm WarningINDClay, Vigo61 min
Mar 28, 5:18 PM CSTSevere Thunderstorm WarningPAHEdwards, Wabash57 min
Mar 28, 5:21 PM CSTSevere Thunderstorm WarningPAHJohnson54 min
Mar 28, 5:24 PM CSTSevere Thunderstorm WarningPAHSaline51 min
Mar 28, 5:27 PM CSTTornado WarningINDClay, Vigo63 min
Mar 28, 5:31 PM CSTSevere Thunderstorm WarningPAHWhite59 min
Mar 28, 5:38 PM CSTTornado WarningPAHJohnson, Massac, Pope22 min
Mar 28, 6:02 PM CSTTornado WarningPAHHardin, Pope28 min
Mar 28, 6:14 PM CSTSevere Thunderstorm WarningPAHGallatin, Saline46 min
Mar 28, 6:30 PM CSTTornado WarningPAHCrittenden, Union, Webster45 min
Mar 28, 7:06 PM CSTSevere Thunderstorm WarningPAHMarshall24 min

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.3 hours before the alert went out and 267 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 1997-03-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 127 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 12:00Z on 1997-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 207 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
127 J/kg
Mixed-layer CIN
-142 J/kg
Mixed-layer LCL
815 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
207 m²/s²
0-3 km storm-relative helicity
211 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

943 
WWUS9 KMKC 282001
SEL3  
MKC WW 282001
MOZ000-ILZ000-KYZ000-290200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 113
STORM PREDICTION CENTER NORMAN OK
201 PM CST FRI MAR 28 1997

A...THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR

   PARTS OF SOUTHEASTERN MISSOURI                           
   PARTS OF SOUTHERN ILLINOIS                           
   PARTS OF WESTERN KENTUCKY                           

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING UNTIL 800 PM CST.

TORNADOES...LARGE HAIL...DANGEROUS LIGHTNING AND DAMAGING
THUNDERSTORM WINDS ARE POSSIBLE IN THESE AREAS.


THE TORNADO WATCH AREA IS ALONG AND 85 STATUTE MILES EAST AND WEST
OF A LINE FROM 40 MILES EAST SOUTHEAST OF POPLAR BLUFF MISSOURI TO
10 MILES NORTH NORTHEAST OF DECATUR ILLINOIS.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
$$

C...TORNADOES AND A FEW SVR TSTMS WITH HAIL SFC AND ALF TO 2
INCHES.  EXTRM TURBC AND SFC WIND GUSTS TO 80 KNOTS.  A FEW CBS
WITH MAX TOPS TO 450.  MEAN WIND VECTOR 24050.

D...THUNDERSTORMS DEVELOPING RAPIDLY AHEAD OF COLD FRONT AND STRONG
UPPER VORT AXIS. LIFTED INDICES OF MINUS 7 INDICATE MODERATE
INSTABILITY WITH 70 TO 80 KT MID LVL FLOW PROVIDING POTENTIAL FOR
DAMAGING DOWNBURSTS AND A FEW STRONG TORNADOES.

E...OTR TSTMS... 

...ROGASH

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 28, 12:30 AM CSTSevere Thunderstorm WatchSPCAlexander, Massac, Pulaski6 hr
Mar 28, 5:00 PM CSTTornado WatchSPCCrawford, Lawrence, Wabash6 hr
Mar 27, 10:00 PM CSTSevere Thunderstorm WatchSPCBarry, Barton, Bates, Benton, Camden, Cass and 22 more5 hr

Nearby

Tornado Watches in Illinois, 1997Tornado Watches in Missouri, 1997Tornado Watches in Kentucky, 1997Every tornado watch in 1997

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.