Alert archive / Ohio / Tornado Watches in 2001

Tornado Watch 801

October 24, 20014 states

The Storm Prediction Center issued this tornado watch at Oct 24, 2001, 5:45 PM EST for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Oct 24, 2001, 5:45 PM EST (22:45 UTC)
Expired
Oct 24, 2001, 11:00 PM EST
In force
5 hr
Issued by
the Storm Prediction Center
All 104 counties

Adams County, IN, Bartholomew County, IN, Dearborn County, IN, Decatur County, IN, Delaware County, IN, Fayette County, IN, Franklin County, IN, Henry County, IN, Jackson County, IN, Jay County, IN, Jefferson County, IN, Jennings County, IN, Ohio County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Switzerland County, IN, Union County, IN, Washington County, IN, Wayne County, IN, Boone County, KY, Bracken County, KY, Campbell County, KY, Carroll County, KY, Gallatin County, KY, Grant County, KY, Kenton County, KY, Lewis County, KY, Mason County, KY, Pendleton County, KY, Robertson County, KY, Trimble County, KY, Lenawee County, MI, Monroe County, MI, Adams County, OH, Allen County, OH, Ashland County, OH, Ashtabula County, OH, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Coshocton County, OH, Crawford County, OH, Cuyahoga County, OH, Darke County, OH, Defiance County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Fulton County, OH, Geauga County, OH, Greene County, OH, Hamilton County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Highland County, OH, Hocking 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, Mercer County, OH, Miami County, OH, Montgomery County, OH, Morrow County, OH, Ottawa County, OH, Paulding County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Portage County, OH, Preble County, OH, Putnam County, OH, Richland County, OH, Ross County, OH, Sandusky County, OH, Scioto County, OH, Seneca County, OH, Shelby County, OH, Summit County, OH, Union County, OH, Van Wert County, OH, Vinton County, OH, Warren County, OH, Wayne County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH

The radar

The Cincinnati radar (KILN), 60 km from the middle of the area, began a volume at 22:46 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

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

IssuedProductOfficeCountiesLasted
Oct 24, 5:45 PM ESTSevere Thunderstorm WarningLMKWashington35 min
Oct 24, 5:48 PM ESTSevere Thunderstorm WarningDTXLenawee57 min
Oct 24, 5:50 PM ESTSevere Thunderstorm WarningIWXDefiance, Paulding60 min
Oct 24, 5:56 PM ESTSevere Thunderstorm WarningINDDecatur, Jennings34 min
Oct 24, 6:02 PM ESTSevere Thunderstorm WarningINDHenry, Randolph28 min
Oct 24, 6:04 PM ESTSevere Thunderstorm WarningIWXHenry, Putnam56 min
Oct 24, 6:04 PM ESTSevere Thunderstorm WarningIWXFulton56 min
Oct 24, 6:07 PM ESTSevere Thunderstorm WarningILNWayne38 min
Oct 24, 6:07 PM ESTSevere Thunderstorm WarningLMKClark, Floyd, Scott28 min
Oct 24, 6:14 PM ESTSevere Thunderstorm WarningILNMercer46 min
Oct 24, 6:18 PM ESTSevere Thunderstorm WarningILNFranklin, Ripley57 min
Oct 24, 6:18 PM ESTSevere Thunderstorm WarningILNFayette, Union57 min
Oct 24, 6:22 PM ESTSevere Thunderstorm WarningLMKJefferson38 min
Oct 24, 6:23 PM ESTSevere Thunderstorm WarningIWXAllen67 min
Oct 24, 6:36 PM ESTSevere Thunderstorm WarningLMKOldham, Trimble34 min
Oct 24, 6:38 PM ESTSevere Thunderstorm WarningILNDarke67 min
Oct 24, 6:39 PM ESTTornado WarningIWXPaulding, Putnam41 min
Oct 24, 6:42 PM ESTTornado WarningILNDarke33 min
Oct 24, 6:45 PM ESTSevere Thunderstorm WarningDTXMonroe45 min
Oct 24, 6:54 PM ESTSevere Thunderstorm WarningILNDearborn, Ohio36 min
Oct 24, 6:56 PM ESTSevere Thunderstorm WarningILNButler, Preble49 min
Oct 24, 7:02 PM ESTSevere Thunderstorm WarningILNSwitzerland58 min
Oct 24, 7:02 PM ESTSevere Thunderstorm WarningILNCampbell, Kenton58 min
Oct 24, 7:04 PM ESTSevere Thunderstorm WarningILNShelby41 min
Oct 24, 7:11 PM ESTSevere Thunderstorm WarningILNMiami, Montgomery49 min
Oct 24, 7:13 PM ESTSevere Thunderstorm WarningCLEHancock, Wood62 min
Oct 24, 7:16 PM ESTSevere Thunderstorm WarningILNGallatin, Grant44 min
Oct 24, 7:22 PM ESTSevere Thunderstorm WarningCLELucas38 min
Oct 24, 7:23 PM ESTSevere Thunderstorm WarningILNWarren52 min
Oct 24, 7:28 PM ESTSevere Thunderstorm WarningILNClermont47 min
Oct 24, 7:30 PM ESTSevere Thunderstorm WarningILNLogan45 min
Oct 24, 7:31 PM ESTSevere Thunderstorm WarningILNPendleton44 min
Oct 24, 7:36 PM ESTSevere Thunderstorm WarningILNClark, Greene39 min
Oct 24, 7:36 PM ESTSevere Thunderstorm WarningILNChampaign39 min
Oct 24, 7:41 PM ESTSevere Thunderstorm WarningCLEOttawa, Sandusky64 min
Oct 24, 7:41 PM ESTSevere Thunderstorm WarningCLESeneca64 min
Oct 24, 7:43 PM ESTSevere Thunderstorm WarningILNBrown, Clinton, Highland47 min
Oct 24, 7:55 PM ESTSevere Thunderstorm WarningILNBracken, Robertson50 min
Oct 24, 8:02 PM ESTSevere Thunderstorm WarningILNFayette43 min
Oct 24, 8:04 PM ESTSevere Thunderstorm WarningILNMadison, Union41 min
Oct 24, 8:10 PM ESTSevere Thunderstorm WarningCLEMarion50 min
Oct 24, 8:12 PM ESTSevere Thunderstorm WarningILNMason33 min
Oct 24, 8:15 PM ESTSevere Thunderstorm WarningILNPickaway, Ross45 min
Oct 24, 8:18 PM ESTSevere Thunderstorm WarningILNFranklin57 min
Oct 24, 8:22 PM ESTSevere Thunderstorm WarningILNDelaware38 min
Oct 24, 8:33 PM ESTSevere Thunderstorm WarningILNLewis57 min
Oct 24, 8:36 PM ESTSevere Thunderstorm WarningCLEErie39 min
Oct 24, 8:38 PM ESTSevere Thunderstorm WarningCLEHuron52 min
Oct 24, 8:51 PM ESTTornado WarningCLEAshtabula, Geauga39 min
Oct 24, 8:55 PM ESTSevere Thunderstorm WarningILNFairfield, Licking50 min
Oct 24, 8:59 PM ESTSevere Thunderstorm WarningILNPike, Scioto46 min
Oct 24, 9:01 PM ESTSevere Thunderstorm WarningILNRoss29 min
Oct 24, 9:03 PM ESTSevere Thunderstorm WarningCLEKnox42 min
Oct 24, 9:04 PM ESTSevere Thunderstorm WarningILNHocking41 min
Oct 24, 9:14 PM ESTSevere Thunderstorm WarningPBZCoshocton, Muskingum61 min
Oct 24, 9:22 PM ESTSevere Thunderstorm WarningCLEAshland23 min
Oct 24, 9:28 PM ESTSevere Thunderstorm WarningCLEAshtabula47 min
Oct 24, 9:35 PM ESTSevere Thunderstorm WarningCLEHolmes, Wayne40 min
Oct 24, 9:41 PM ESTSevere Thunderstorm WarningCLEMedina49 min
Oct 24, 10:02 PM ESTSevere Thunderstorm WarningCLECuyahoga43 min
Oct 24, 10:05 PM ESTSevere Thunderstorm WarningCLEStark, Summit25 min
Oct 24, 10:29 PM ESTSevere Thunderstorm WarningCLEGeauga, Portage46 min
Oct 24, 10:57 PM ESTSevere Thunderstorm WarningCLEAshtabula, Mahoning, Trumbull48 min

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.8 hours before the alert went out and 61 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 2001-10-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2001-10-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 128 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
912 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
128 m²/s²
0-3 km storm-relative helicity
297 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.

358 
WWUS9 KMKC 242231
SEL1  

SEL1  
MKC WW 242223
INZ000-KYZ000-OHZ000-LEZ000-250400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 801
STORM PREDICTION CENTER NORMAN OK
623 PM EDT WED OCT 24 2001

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

   EASTERN INDIANA                            
   NORTHERN KENTUCKY                           
   WESTERN...CENTRAL AND NORTHERN OHIO                            
   LAKE ERIE                          

EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 645 PM
UNTIL MIDNIGHT EDT.

 ...THIS IS A PARTICULARLY DANGEROUS SITUATION...
 
DAMAGING TORNADOES...LARGE HAIL TO 2 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 95 STATUTE MILES EAST AND WEST
OF A LINE FROM 45 MILES SOUTH SOUTHWEST OF CINCINNATI OHIO TO 50
MILES NORTHWEST OF CLEVELAND OHIO.

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.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO WATCH
NUMBER 797.  WATCH NUMBER 797 WILL NOT BE IN EFFECT AFTER 645 PM
EDT.  CONTINUE...WW 798...WW 799...WW 800...

DISCUSSION...SUPERCELLS EXPECTED TO CONTINUE DEVELOPING IN VERY
HIGH SHEAR ENVIRONMENT AHEAD OF STRONG SHORTWAVE TROUGH EJECTING
NEWD ACROSS THE MID MS/LWR OH VLYS.  MAIN CONVECTIVE MODE EXPECTED
TO BE A SQUALL LINE WITH NUMEROUS EMBEDDED SUPERCELLS.  STRENGTH OF
DEEP SHEAR /ON THE ORDER OF 70 KTS/ SUGGESTS CONTINUING THREAT FOR
A COUPLE STRONG TORNADOES IN ADDITION TO DAMAGING BOW WINDS/HAIL. 
 
AVIATION...TORNADOES AND 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 23050.

...CORFIDI

415,0804 382,0825 382,0863 415,0842

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 24, 11:45 AM ESTTornado WatchSPCAdams, Allen, Bartholomew, Benton, Blackford, Boone and 75 more7 hr
Oct 24, 6:00 PM ESTTornado WatchSPCClark, Crawford, Floyd, Harrison, Perry5 hr
Oct 24, 1:45 PM ESTTornado WatchSPCBallard, Caldwell, Calloway, Carlisle, Crittenden, Fulton and 11 more5 hr
Oct 24, 3:15 PM ESTTornado WatchSPCAllegan, Barry, Bay, Berrien, Branch, Calhoun and 40 more6 hr

Nearby

Tornado Watches in Ohio, 2001Tornado Watches in Indiana, 2001Tornado Watches in Kentucky, 2001Every tornado watch in 2001

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.