Alert archive / Ohio / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 397

May 31, 20007 counties in Indiana; 43 counties in Ohio

The Storm Prediction Center issued this severe thunderstorm watch at May 31, 2000, 6:00 PM EST for 7 counties in Indiana; 43 counties in Ohio. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: May 31, 2000, 6:00 PM EST (23:00 UTC)
Expired: May 31, 2000, 10:00 PM EST
In force: 4 hr
Issued by: the Storm Prediction Center

All 50 counties

Fayette County, IN, Henry County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Union County, IN, Wayne County, IN, Allen County, OH, Ashland County, OH, Auglaize County, OH, Champaign County, OH, Clark County, OH, Crawford County, OH, Cuyahoga County, OH, Darke County, OH, Delaware County, OH, Erie County, OH, Fayette County, OH, Franklin County, OH, Geauga County, OH, Greene County, OH, Hancock County, OH, Hardin County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Lorain County, OH, Madison County, OH, Marion County, OH, Medina County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Morrow County, OH, Ottawa County, OH, Pickaway County, OH, Portage County, OH, Preble County, OH, Putnam County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Summit County, OH, Union County, OH, Wayne County, OH, Wood County, OH, Wyandot County, OH

The radar

The Cincinnati radar (KILN), 103 km from the middle of the area, began a volume at 23:03 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

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

Issued	Product	Office	Counties	Lasted
May 31, 6:08 PM EST	Severe Thunderstorm Warning	ILN	Madison	52 min
May 31, 6:16 PM EST	Severe Thunderstorm Warning	CLE	Cuyahoga, Geauga	44 min
May 31, 6:18 PM EST	Severe Thunderstorm Warning	CLE	Portage, Trumbull	27 min
May 31, 6:21 PM EST	Severe Thunderstorm Warning	ILN	Darke	39 min
May 31, 6:31 PM EST	Severe Thunderstorm Warning	ILN	Franklin	59 min
May 31, 6:56 PM EST	Flash Flood Warning	CLE	Geauga	2 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.0 hours before the alert went out and 102 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1535 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 158 m²/s²
0-3 km storm-relative helicity: 175 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.

000 
WWUS9 KMKC 312241
MKC WW 312241
INZ000-OHZ000-LEZ000-010300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 397
STORM PREDICTION CENTER NORMAN OK
641 PM EDT WED MAY 31 2000

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

   EAST CENTRAL INDIANA                            
   OHIO                               
   SOUTHWEST LAKE ERIE                          

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 700 PM UNTIL
1100 PM EDT.

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 80 STATUTE MILES
EAST AND WEST OF A LINE FROM 30 MILES SOUTH SOUTHWEST OF DAYTON
OHIO TO 20 MILES NORTHWEST OF CLEVELAND OHIO.

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 396...

DISCUSSION...BOW ECHO OVER ERN INDIANA IS MOVING ESEWD AT 50 KT AND
WILL MOVE INTO WRN OH DURING THE NEXT HOUR.  OTHER STRONG/SEVERE
STORMS ARE DEVELOPING IN ADVANCE OF THE BOW ECHO...WHERE AIR MASS
REMAINS MODERATELY UNSTABLE WITH MUCAPE AROUND 2500 J/KG.  STRONG
WNWLY MID LEVEL WINDS ACROSS THE AREA WILL PROVIDE SUFFICIENT SHEAR
FOR SEVERE STORMS TO CONTINUE THROUGH THE EVENING.


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 450.  MEAN STORM
MOTION VECTOR 28040.


...WEISS

;392,0855 413,0833 413,0803 392,0825;

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 31, 3:30 PM EST	Severe Thunderstorm Watch	SPC	Adams, Allen, Benton, Blackford, Boone, Carroll and 35 more	6 hr

Nearby

Severe Thunderstorm Watches in Ohio, 2000 Severe Thunderstorm Watches in Indiana, 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.