Alert archive / Ohio / Tornado Watches in 2006

Tornado Watch 341

May 10, 2006Boone County, Campbell County, Kenton County, Kentucky; 51 counties in Ohio

The Storm Prediction Center issued this tornado watch at May 10, 2006, 11:12 PM EDT for Boone County, Campbell County, Kenton County, Kentucky; 51 counties in Ohio. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 10, 2006, 11:12 PM EDT (03:12 UTC)
Expired
May 11, 2006, 3:51 AM EDT
In force
5 hr
Issued by
the Storm Prediction Center
All 54 counties

Boone County, KY, Campbell County, KY, Kenton County, KY, Allen 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, Darke County, OH, Defiance County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Fulton County, OH, Greene County, OH, Hamilton County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Highland County, OH, Hocking County, OH, Huron County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Lucas County, OH, Madison County, OH, Marion County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Morrow County, OH, Ottawa County, OH, Paulding County, OH, Pickaway County, OH, Preble County, OH, Putnam County, OH, Richland County, OH, Ross County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Union County, OH, Van Wert County, OH, Warren County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH

The radar

The Cincinnati radar (KILN), 123 km from the middle of the area, began a volume at 03:12 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.

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 3.2 hours before the alert went out and 121 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 00:00Z on 2006-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 97 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 00:00Z on 2006-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 143 square meters per square second.1939587897Sfc1 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
97 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
579 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
143 m²/s²
0-3 km storm-relative helicity
139 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 110313
SEL1  
SPC WW 110313
INZ000-KYZ000-OHZ000-LEZ000-111000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 341
NWS STORM PREDICTION CENTER NORMAN OK
1110 PM EDT WED MAY 10 2006

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

       EASTERN INDIANA
       NORTHERN KENTUCKY
       WESTERN AND CENTRAL OHIO
       LAKE ERIE

EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1110 PM
UNTIL 600 AM EDT.

TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 30 MILES WEST OF DAYTON OHIO
TO 60 MILES NORTH NORTHEAST OF COLUMBUS OHIO.  FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU1).

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 339. WATCH NUMBER 339 WILL NOT BE IN EFFECT AFTER
1110 PM EDT. CONTINUE...WW 338...WW 340...

DISCUSSION...TSTMS NOW FORMING INVOF DEEPENING SURFACE LOW IN E
CNTRL/SE IND MAY ASSUME SUFFICIENT LOW LEVEL ROTATION TO PRODUCE
ISOLATED TORNADOES AS LOW LEVEL WIND FIELD STRENGTHENS THROUGH EARLY
THURSDAY.  LOW LEVEL INSTABILITY WILL REMAIN LIMITED...BUT RECENT
LIGHTNING/RADAR TRENDS SHOW AN UPTURN IN CONVECTIVE
STRENGTH...POSSIBLY ASSOCIATED WITH ONSET OF MID LEVEL COOLING WITH
EXIT REGION OF APPROACHING JET STREAK.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
400. MEAN STORM MOTION VECTOR 22030.


...CORFIDI

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 10, 8:43 PM EDTMesoscale DiscussionSPCAnderson, Boone, Bracken, Breckinridge, Bullitt, Campbell and 24 more2 hr
May 11, 1:19 PM EDTMesoscale DiscussionSPCAllen, Ballard, Barren, Breckinridge, Butler, Caldwell and 32 more116 min

Nearby

Tornado Watches in Ohio, 2006Tornado Watches in Kentucky, 2006Every tornado watch in 2006

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.