Alert archive / Indiana / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 396

May 31, 20004 states

The Storm Prediction Center issued this severe thunderstorm watch at May 31, 2000, 3:30 PM CDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 31, 2000, 3:30 PM CDT (20:30 UTC)
Expired: May 31, 2000, 9:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 59 counties

Champaign County, IL, Ford County, IL, Iroquois County, IL, Piatt County, IL, Vermilion County, IL, Adams County, IN, Allen County, IN, Benton County, IN, Blackford County, IN, Boone County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, DeKalb County, IN, Delaware County, IN, Elkhart County, IN, Fountain County, IN, Fulton County, IN, Grant County, IN, Hamilton County, IN, Howard County, IN, Huntington County, IN, Jasper County, IN, Jay County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Madison County, IN, Marshall County, IN, Miami County, IN, Montgomery County, IN, Newton County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Tippecanoe County, IN, Tipton County, IN, Wabash County, IN, Warren County, IN, Wells County, IN, White County, IN, Whitley County, IN, Berrien County, MI, Branch County, MI, Cass County, MI, Hillsdale County, MI, Lenawee County, MI, Monroe County, MI, Saint Joseph County, MI, Defiance County, OH, Fulton County, OH, Henry County, OH, Paulding County, OH, Van Wert County, OH, Williams County, OH

The radar

The Northern Indiana radar (KIWX), 105 km from the middle of the area, began a volume at 20:21 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

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

Issued	Product	Office	Counties	Lasted
May 31, 3:32 PM CDT	Severe Thunderstorm Warning	LOT	Ford, Iroquois	28 min
May 31, 3:43 PM CDT	Severe Thunderstorm Warning	IWX	Pulaski, White	47 min
May 31, 4:00 PM CDT	Severe Thunderstorm Warning	IND	Carroll, Tippecanoe	60 min
May 31, 4:11 PM CDT	Severe Thunderstorm Warning	IWX	Cass, Fulton	49 min
May 31, 4:33 PM CDT	Severe Thunderstorm Warning	IWX	Miami	47 min
May 31, 4:40 PM CDT	Severe Thunderstorm Warning	IND	Howard	45 min
May 31, 4:53 PM CDT	Severe Thunderstorm Warning	IWX	Grant	47 min
May 31, 5:30 PM CDT	Severe Thunderstorm Warning	IWX	Blackford	30 min
May 31, 5:35 PM CDT	Severe Thunderstorm Warning	IWX	Jay	35 min

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.5 hours before the alert went out and 176 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1153 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 936 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 124 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -0.7

Open this sounding in Storm Lab

The text

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

794 
WWUS9 KMKC 312016
SEL6  
MKC WW 312016
ILZ000-INZ000-MIZ000-OHZ000-010200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 396
STORM PREDICTION CENTER NORMAN OK
316 PM CDT WED MAY 31 2000

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   EAST CENTRAL ILLINOIS                           
   NORTHERN AND CENTRAL INDIANA                            
   SOUTHERN LOWER MICHIGAN                           
   EXTREME NORTHWEST OHIO                               

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 330 PM UNTIL
900 PM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 90 STATUTE MILES
EAST AND WEST OF A LINE FROM 30 MILES SOUTHEAST OF DANVILLE
ILLINOIS TO 70 MILES EAST NORTHEAST OF SOUTH BEND INDIANA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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.

OTHER WATCH INFORMATION...  CONTINUE...WW 395...

DISCUSSION...REDEVELOPING MCS ASSOCIATED WITH MCV NOW NEAR CHI
EXPECTED TO INTENSIFY AS IT MOVES INTO INCREASINGLY UNSTABLE AIR
/LIFTED INDICES MINUS 4 TO MINUS 6/ OVER ERN IL/IND/SRN MI. 
VERTICAL SHEAR NOT ESPECIALLY STRONG...BUT SUFFICIENT TO MAINTAIN
MCS ORGANIZATION GIVEN DEEP FORCING DOWNSTREAM FROM MCV.  POTENTIAL 
WILL EXIST FOR ISOLATED TORNADOES...MAINLY ALONG LEADING EDGE OF
LARGE SCALE BOW...BUT THREAT NOT EXPECTED TO BE GREAT ENOUGH TO
WARRANT A TORNADO WATCH ATTM.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 26035.

...CORFIDI

420,0831 395,0853 395,0885 420,0864

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 30, 10:30 PM CDT	Severe Thunderstorm Watch	SPC	Boone, Bureau, Carroll, DeKalb, Henry, Jo Daviess and 10 more	5 hr
May 31, 10:45 AM CDT	Severe Thunderstorm Watch	SPC	Carroll, Henderson, Henry, Jo Daviess, Mercer, Rock Island and 3 more	5 hr
May 31, 6:00 PM CDT	Severe Thunderstorm Watch	SPC	Fayette, Henry, Randolph, Rush, Shelby, Union and 1 more	4 hr

Nearby

Severe Thunderstorm Watches in Indiana, 2000 Severe Thunderstorm Watches in Michigan, 2000 Severe Thunderstorm Watches in Ohio, 2000 Every severe thunderstorm watch 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.