Tornado Watch 564

Issued

Dec 23, 2015, 4:49 PM CST (22:49 UTC)

Expired

Dec 23, 2015, 10:47 PM CST

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Nashville radar (KOHX), 74 km from the middle of the area, began a volume at 22:51 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

80%

One or more EF2 to EF5 tornadoes

50%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

30%

One or more hailstones of 2 inches or more

20%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 2045Dec 23, 2:49 PM CST
• Mesoscale Discussion 2047Dec 23, 4:26 PM CST
• Mesoscale Discussion 2051Dec 23, 6:35 PM CST
• Mesoscale Discussion 2054Dec 23, 10:11 PM CST

351 
WWUS20 KWNS 232247
SEL4  
SPC WW 232247
ALZ000-TNZ000-240500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 564
NWS STORM PREDICTION CENTER NORMAN OK
450 PM CST WED DEC 23 2015

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  NORTHWEST AND NORTH CENTRAL ALABAMA
  MIDDLE TENNESSEE

* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 450 PM
  UNTIL 1100 PM CST.

* PRIMARY THREATS INCLUDE...
  SEVERAL TORNADOES LIKELY WITH A COUPLE INTENSE TORNADOES
    POSSIBLE
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

SUMMARY...SUPERCELLS IN A BROKEN BAND WILL CONTINUE TO MOVE QUICKLY
NORTHEASTWARD FROM NORTHERN MISSISSIPPI AND WESTERN TENNESSEE INTO
NORTHWEST ALABAMA AND MIDDLE TENNESSEE THROUGH LATE EVENING. 
TORNADOES...A COUPLE OF WHICH COULD BE STRONG...DAMAGING WINDS...AND
LARGE HAIL WILL ALL BE POSSIBLE.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE
MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH NORTHEAST OF
NASHVILLE TENNESSEE TO 30 MILES SOUTH OF MUSCLE SHOALS ALABAMA. 
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU4).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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...CONTINUE...WW 558...WW 559...WW
560...WW 561...WW 562...WW 563...

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24050.


...THOMPSON

Tornado Watches in Tennessee, 2015Tornado Watches in Alabama, 2015Every tornado watch in 2015

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.