Tornado Watch 253

Issued

Jun 7, 2014, 4:44 PM CDT (21:44 UTC)

Expired

Jun 8, 2014, 12:00 AM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Paducah radar (KPAH), 95 km from the middle of the area, began a volume at 21:44 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

60%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

70%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 879Jun 7, 2:27 PM CDT
• Mesoscale Discussion 881Jun 7, 3:12 PM CDT
• Mesoscale Discussion 883Jun 7, 3:32 PM CDT

876 
WWUS20 KWNS 072149
SEL3  
SPC WW 072149
ARZ000-ILZ000-INZ000-KYZ000-MOZ000-TNZ000-080500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 253
NWS STORM PREDICTION CENTER NORMAN OK
445 PM CDT SAT JUN 7 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  NORTHEAST ARKANSAS
  SOUTHERN AND CENTRAL ILLINOIS
  SOUTHWEST INDIANA
  WESTERN KENTUCKY
  EASTERN AND SOUTHEASTERN MISSOURI
  WESTERN AND MIDDLE TENNESSEE

* EFFECTIVE THIS SATURDAY AFTERNOON FROM 445 PM UNTIL MIDNIGHT
  CDT.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES LIKELY
  SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
    TO 2 INCHES IN DIAMETER POSSIBLE
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES EAST AND WEST OF A LINE FROM 60 MILES WEST NORTHWEST OF
MATTOON ILLINOIS TO 60 MILES SOUTHEAST OF JACKSON TENNESSEE.  FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU3).

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 252...

DISCUSSION...SCTD TSTMS FORMING LARGELY IN RESPONSE TO SFC HEATING
BENEATH EWD-MOVING MCV/UPR LOW NOW CROSSING THE MS RIVER N OF STL
SHOULD PERSIST THROUGH MID-LATE EVE. AMPLE DEEP SPEED AND
DIRECTIONAL SHEAR WILL BE PRESENT THROUGHOUT WW AREA TO SUPPORT
ASSUMPTION OF SUPERCELL STRUCTURE WITH ANY MORE SUSTAINED UPDRAFTS.
TWO AREAS APPEAR TO HAVE A SOMEWHAT ENHANCED RISK FOR LOW-LVL
MESOCYCLONES AND POSSIBLE TORNADOES: /1/ WITHIN MID-VLY SYSTEM DRY
SLOT FROM NEAR STL EWD INTO CNTRL/SRN IL...AND /2/ WITHIN ZONE OF
STRENGTHENING WAA/MOISTURE TRANSPORT ALONG DIFFUSE WARM FRONT FROM
SRN IL/WRN KY INTO W TN.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 25030.


...CORFIDI

Tornado Watches in Illinois, 2014Tornado Watches in Tennessee, 2014Tornado Watches in Kentucky, 2014Every tornado watch in 2014

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.