Alert archive / Indiana / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 252

May 9, 200014 counties in Indiana; 9 counties in Michigan; 8 counties in Ohio

The Storm Prediction Center issued this severe thunderstorm watch at May 9, 2000, 12:45 AM EST for 14 counties in Indiana; 9 counties in Michigan; 8 counties in Ohio. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: May 9, 2000, 12:45 AM EST (05:45 UTC)
Expired: May 9, 2000, 6:00 AM EST
In force: 5 hr
Issued by: the Storm Prediction Center

All 31 counties

Adams County, IN, Allen County, IN, Cass County, IN, DeKalb County, IN, Fulton County, IN, Huntington County, IN, Kosciusko County, IN, LaGrange County, IN, Miami County, IN, Noble County, IN, Steuben County, IN, Wabash County, IN, Wells County, IN, Whitley County, IN, Branch County, MI, Calhoun County, MI, Hillsdale County, MI, Jackson County, MI, Lenawee County, MI, Monroe County, MI, Saint Joseph County, MI, Washtenaw County, MI, Wayne County, MI, Defiance County, OH, Fulton County, OH, Henry County, OH, Lucas County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH, Williams County, OH

The radar

The Northern Indiana radar (KIWX), 48 km from the middle of the area, began a volume at 05:56 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

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

Issued	Product	Office	Counties	Lasted
May 9, 12:45 AM EST	Severe Thunderstorm Warning	IWX	Elkhart, Kosciusko	35 min
May 9, 1:03 AM EST	Severe Thunderstorm Warning	IWX	LaGrange	27 min
May 9, 2:48 AM EST	Severe Thunderstorm Warning	DTX	Wayne	27 min

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 5.8 hours before the alert went out and 205 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: 876 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 1484 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

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

586 
WWUS9 KMKC 090515
SEL2  

SEL2  
MKC WW 090515
INZ000-MIZ000-OHZ000-LEZ000-091100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 252
STORM PREDICTION CENTER NORMAN OK
115 AM EDT TUE MAY 9 2000

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

   NORTHERN INDIANA                            
   SOUTHEAST LOWER MICHIGAN                           
   NORTHWEST OHIO                               
   WESTERN LAKE ERIE                          

EFFECTIVE THIS TUESDAY MORNING FROM 145 AM UNTIL 700 AM EDT.

HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 60 STATUTE MILES
EAST AND WEST OF A LINE FROM 30 MILES SOUTHWEST OF FORT WAYNE
INDIANA TO 15 MILES NORTH NORTHWEST OF ANN ARBOR MICHIGAN.

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 249...WW 250...WW 251...

DISCUSSION...BOW ECHO MOVING ENEWD AT 55 KT WILL HAVE THE POTENTIAL
TO PRODUCE DAMAGING WINDS...GIVEN THE PRESENCE OF STEEP MID-LEVEL
LAPSE RATES AND MODERATE UNIDIRECTIONAL FLOW ALOFT. SRN FRINGE OF
DEVELOPMENT WILL BE LIMITED BY STRONG CAP OVER THE LOWER OHIO
VALLEY.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 26055.

...VESCIO

422,0824 404,0842 404,0864 422,0850

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 8, 10:30 PM EST	Severe Thunderstorm Watch	SPC	Benton, Elkhart, Jasper, Lake, LaPorte, Marshall and 7 more	6 hr
May 9, 2:30 PM EST	Severe Thunderstorm Watch	SPC	Adams, Allen, Benton, Blackford, Boone, Brown and 59 more	7 hr
May 9, 3:45 PM EST	Tornado Watch	SPC	Adams, Allen, Bartholomew, Blackford, Dearborn, Decatur and 18 more	6 hr
May 8, 8:15 PM EST	Severe Thunderstorm Watch	SPC	Muskegon	5 hr
May 8, 9:30 PM EST	Severe Thunderstorm Watch	SPC	Allegan, Arenac, Barry, Bay, Clare, Clinton and 26 more	6 hr
May 9, 5:30 PM EST	Tornado Watch	SPC	Barry, Branch, Calhoun, Clinton, Eaton, Genesee and 14 more	5 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.