Alert archive / Ohio / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 552

July 29, 20025 counties in Indiana; Boone County, Campbell County, Kenton County, Kentucky; 54 counties in Ohio

The Storm Prediction Center issued this severe thunderstorm watch at Jul 29, 2002, 4:30 PM EDT for 5 counties in Indiana; Boone County, Campbell County, Kenton County, Kentucky; 54 counties in Ohio. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jul 29, 2002, 4:30 PM EDT (20:30 UTC)
Expired
Jul 29, 2002, 10:00 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
All 62 counties

Dearborn County, IN, Franklin County, IN, Ohio County, IN, Ripley County, IN, Union County, IN, Boone County, KY, Campbell County, KY, Kenton County, KY, Adams County, OH, Allen County, OH, Ashland County, OH, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Crawford County, OH, Cuyahoga County, OH, Darke County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Geauga County, OH, Greene County, OH, Hamilton County, OH, Hancock County, OH, Hardin County, OH, Highland County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Lake County, OH, Licking County, OH, Logan County, OH, Lorain County, OH, Lucas County, OH, Madison County, OH, Marion County, OH, Medina County, OH, Miami County, OH, Montgomery County, OH, Morrow County, OH, Ottawa County, OH, Pickaway County, OH, Pike County, OH, Preble County, OH, Putnam County, OH, Richland County, OH, Ross County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Summit County, OH, Union County, OH, Warren County, OH, Wayne County, OH, Wood County, OH, Wyandot County, OH

The radar

The Cincinnati radar (KILN), 66 km from the middle of the area, began a volume at 20:32 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

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

IssuedProductOfficeCountiesLasted
Jul 29, 4:53 PM EDTSevere Thunderstorm WarningIWXAllen, Putnam, Van Wert67 min
Jul 29, 5:08 PM EDTSevere Thunderstorm WarningILNDarke37 min
Jul 29, 5:09 PM EDTSevere Thunderstorm WarningILNAuglaize, Shelby51 min
Jul 29, 5:24 PM EDTSevere Thunderstorm WarningCLEHancock66 min
Jul 29, 5:35 PM EDTSevere Thunderstorm WarningILNHardin55 min
Jul 29, 5:37 PM EDTSevere Thunderstorm WarningCLEWood38 min
Jul 29, 5:41 PM EDTSevere Thunderstorm WarningILNUnion49 min
Jul 29, 5:50 PM EDTSevere Thunderstorm WarningILNChampaign, Logan40 min
Jul 29, 5:55 PM EDTSevere Thunderstorm WarningILNButler, Hamilton65 min
Jul 29, 5:57 PM EDTSevere Thunderstorm WarningCLESandusky, Seneca48 min
Jul 29, 6:02 PM EDTSevere Thunderstorm WarningILNMontgomery43 min
Jul 29, 6:03 PM EDTSevere Thunderstorm WarningCLEMarion, Wyandot57 min
Jul 29, 6:11 PM EDTSevere Thunderstorm WarningILNOhio, Switzerland64 min
Jul 29, 6:23 PM EDTSevere Thunderstorm WarningILNWarren52 min
Jul 29, 6:24 PM EDTSevere Thunderstorm WarningCLECrawford36 min
Jul 29, 6:27 PM EDTSevere Thunderstorm WarningILNUnion48 min
Jul 29, 6:32 PM EDTSevere Thunderstorm WarningCLEErie, Huron43 min
Jul 29, 6:37 PM EDTSevere Thunderstorm WarningILNClark, Greene53 min
Jul 29, 6:38 PM EDTSevere Thunderstorm WarningCLEMorrow67 min
Jul 29, 6:41 PM EDTSevere Thunderstorm WarningCLEAshland, Richland49 min
Jul 29, 6:44 PM EDTSevere Thunderstorm WarningILNDelaware61 min
Jul 29, 6:48 PM EDTSevere Thunderstorm WarningILNCampbell, Kenton42 min
Jul 29, 6:48 PM EDTSevere Thunderstorm WarningCLELorain42 min
Jul 29, 6:49 PM EDTSevere Thunderstorm WarningILNClinton41 min
Jul 29, 6:55 PM EDTSevere Thunderstorm WarningILNClermont50 min
Jul 29, 7:02 PM EDTSevere Thunderstorm WarningCLECuyahoga, Medina43 min
Jul 29, 7:07 PM EDTSevere Thunderstorm WarningCLEKnox53 min
Jul 29, 7:11 PM EDTSevere Thunderstorm WarningILNFayette, Madison64 min
Jul 29, 7:17 PM EDTSevere Thunderstorm WarningCLEWayne58 min
Jul 29, 7:17 PM EDTSevere Thunderstorm WarningILNBrown, Highland73 min
Jul 29, 7:39 PM EDTSevere Thunderstorm WarningCLECuyahoga, Geauga, Lake51 min
Jul 29, 7:40 PM EDTSevere Thunderstorm WarningILNLicking65 min
Jul 29, 8:06 PM EDTSevere Thunderstorm WarningCLEHolmes39 min

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.5 hours before the alert went out and 65 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, Cncnati-Daytn, OH at 12:00Z on 2002-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 747 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2002-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
747 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
879 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 292031
SEL2  
SPC WW 292030
INZ000-KYZ000-OHZ000-LEZ000-300200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 552
STORM PREDICTION CENTER NORMAN OK
430 PM EDT MON JUL 29 2002

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

   SOUTHEAST INDIANA                            
   EXTREME NORTH CENTRAL KENTUCKY                           
   MUCH OF WESTERN AND NORTHERN OHIO                              
   SOUTHERN LAKE ERIE                          

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 430 PM UNTIL 1000
PM EDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 70 STATUTE MILES
EAST AND WEST OF A LINE FROM 20 MILES SOUTH SOUTHEAST OF CINCINNATI
OHIO TO 35 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.  SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.

OTHER WATCH INFORMATION...  CONTINUE...WW 550...WW 551...

DISCUSSION...LINE OF SEVERE THUNDERSTORMS OVER INDIANA IS EXPECTED
TO SWEEP EASTWARD ACROSS OHIO THROUGH THE EVENING HOURS.  EMBEDDED
BOW ECHOES IN THE LINE WILL POSE THREAT OF DAMAGING WINDS...WHILE
ISOLATED INTENSE STORMS AHEAD OF LINE COULD PRODUCE LARGE HAIL.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 26040.

...HART

384,0853 414,0834 414,0805 384,0825

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 29, 1:20 PM EDTSevere Thunderstorm WatchSPCBartholomew, Boone, Brown, Clay, Clinton, Daviess and 35 more6 hr
Jul 29, 1:40 PM EDTSevere Thunderstorm WatchSPCAdams, Allen, Carroll, Cass, DeKalb, Elkhart and 15 more5 hr
Jul 29, 7:10 PM EDTSevere Thunderstorm WatchSPCAthens, Belmont, Carroll, Columbiana, Guernsey, Harrison and 15 more5 hr

Nearby

Severe Thunderstorm Watches in Ohio, 2002Severe Thunderstorm Watches in Indiana, 2002Severe Thunderstorm Watches in Kentucky, 2002Every severe thunderstorm watch in 2002

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.