Alert archive / Ohio / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 113

April 9, 2001Greenup County, Kentucky; 19 counties in Ohio; 16 counties in West Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Apr 9, 2001, 10:00 PM EDT for Greenup County, Kentucky; 19 counties in Ohio; 16 counties in West Virginia. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Apr 9, 2001, 10:00 PM EDT (02:00 UTC)
Expired: Apr 10, 2001, 1:00 AM EDT
In force: 3 hr
Issued by: the Storm Prediction Center

All 36 counties

Greenup County, KY, Adams County, OH, Athens County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Gallia County, OH, Hocking County, OH, Jackson County, OH, Lawrence County, OH, Madison County, OH, Meigs County, OH, Morgan County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Vinton County, OH, Washington County, OH, Cabell County, WV, Calhoun County, WV, Clay County, WV, Fayette County, WV, Gilmer County, WV, Jackson County, WV, Kanawha County, WV, Lincoln County, WV, Mason County, WV, Nicholas County, WV, Pleasants County, WV, Putnam County, WV, Ritchie County, WV, Roane County, WV, Wirt County, WV, Wood County, WV

The radar

The Cincinnati radar (KILN), 120 km from the middle of the area, began a volume at 01:59 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

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

Issued	Product	Office	Counties	Lasted
Apr 9, 10:15 PM EDT	Severe Thunderstorm Warning	ILN	Fayette	45 min
Apr 9, 10:47 PM EDT	Severe Thunderstorm Warning	ILN	Pickaway	43 min
Apr 9, 10:52 PM EDT	Severe Thunderstorm Warning	ILN	Ross	38 min
Apr 9, 10:58 PM EDT	Severe Thunderstorm Warning	ILN	Fayette	47 min
Apr 9, 11:02 PM EDT	Severe Thunderstorm Warning	ILN	Madison	28 min
Apr 9, 11:28 PM EDT	Severe Thunderstorm Warning	ILN	Ross	32 min
Apr 9, 11:47 PM EDT	Severe Thunderstorm Warning	ILN	Ross	43 min
Apr 10, 12:25 AM EDT	Severe Thunderstorm Warning	ILN	Pike	35 min

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 2.0 hours before the alert went out and 118 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: 1457 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1624 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 63 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

000 
WWUS9 KMKC 100158
SEL3  

SEL3  
MKC WW 100155
KYZ000-OHZ000-WVZ000-100500-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 113
STORM PREDICTION CENTER NORMAN OK
955 PM EDT MON APR 9 2001

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

   EXTREME NORTHEAST KENTUCKY                           
   SOUTHERN OHIO                               
   WEST VIRGINIA                      

EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 1000 PM UNTIL
100 AM EDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 55 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTHWEST OF COLUMBUS OHIO
TO 45 MILES EAST NORTHEAST OF CHARLESTON WEST VIRGINIA.

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...THIS SEVERE THUNDERSTORM WATCH REPLACES
SEVERE THUNDERSTORM WATCH NUMBER 107...SEVERE THUNDERSTORM WATCH
NUMBER 109.  WATCH NUMBER 107...109 WILL NOT BE IN EFFECT AFTER
1000 PM EDT.  CONTINUE...WW 108...WW 111...

DISCUSSION...A FEW STORMS WITH LARGE HAIL MAY CONTINUE THROUGH LATE
THIS EVENING IN WW AREA AS 35-40 KT LOW LEVEL JET CONTINUES TO
IMPINGE UPON STALLING FRONT/OUTFLOW BOUNDARY ORIENTED WNW/ESE
ACROSS REGION.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 29040.

...CORFIDI

;374,0804 384,0833 401,0833 392,0804;

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 10, 2:00 PM EDT	Severe Thunderstorm Watch	SPC	Adair, Allen, Anderson, Barren, Bath, Bell and 108 more	6 hr

Nearby

Severe Thunderstorm Watches in Ohio, 2001 Severe Thunderstorm Watches in West Virginia, 2001 Severe Thunderstorm Watches in Kentucky, 2001 Every severe thunderstorm 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.