Tornado Watch 511

Issued

Jun 19, 2011, 12:52 PM CDT (17:52 UTC)

Expired

Jun 19, 2011, 8:45 PM CDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

70 kt

The Nashville radar (KOHX), 101 km from the middle of the area, began a volume at 17:52 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.

Two or more tornadoes

40%

One or more EF2 to EF5 tornadoes

10%

Ten or more severe wind reports

70%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

50%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 1293Jun 19, 12:23 PM CDT
• Mesoscale Discussion 1297Jun 19, 3:12 PM CDT
• Mesoscale Discussion 1298Jun 19, 3:13 PM CDT
• Mesoscale Discussion 1300Jun 19, 4:30 PM CDT
• Mesoscale Discussion 1304Jun 19, 6:18 PM CDT
• Mesoscale Discussion 1306Jun 19, 8:07 PM CDT

553 
WWUS20 KWNS 191753
SEL1
SPC WW 191753
KYZ000-NCZ000-TNZ000-200000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 511
NWS STORM PREDICTION CENTER NORMAN OK
155 PM EDT SUN JUN 19 2011

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

       PARTS OF SOUTHEAST KENTUCKY
       SMALL PART OF WESTERN NORTH CAROLINA
       MUCH OF MIDDLE AND EASTERN TENNESSEE

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 155 PM UNTIL 800
PM EDT.

TORNADOES...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 APPROXIMATELY ALONG AND 60 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 20 MILES NORTHWEST OF
NASHVILLE TENNESSEE TO 45 MILES EAST OF KNOXVILLE TENNESSEE.  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.

DISCUSSION...THUNDERSTORMS WILL DEVELOP ACROSS THE WATCH AREA AS AIR
MASS DESTABILIZES EWD.  WITH MLCAPES AOA 2500 J/KG AND PRESENCE OF
40-50KT OF SHEAR...SUPERCELLS ARE LIKELY. PRIMARY THREAT WILL BE
DAMAGING WINDS AS STORMS EVOLVE INTO BOWING SEGMENTS...BUT WITH THE
STRONG SHEAR A COUPLE OF TORNADOES ARE POSSIBLE AS WELL.

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
550. MEAN STORM MOTION VECTOR 27035.


...HALES

Tornado Watches in Tennessee, 2011Tornado Watches in Kentucky, 2011Tornado Watches in North Carolina, 2011Every tornado watch in 2011

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.