Tornado Watch 537

Issued

Oct 13, 2014, 12:57 PM CDT (17:57 UTC)

Expired

Oct 13, 2014, 7:58 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

65 kt

The Memphis radar (KNQA), 103 km from the middle of the area, began a volume at 18:01 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

90%

One or more EF2 to EF5 tornadoes

30%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

20%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 1868Oct 13, 10:20 AM CDT
• Mesoscale Discussion 1869Oct 13, 11:52 AM CDT
• Mesoscale Discussion 1874Oct 13, 2:22 PM CDT
• Mesoscale Discussion 1879Oct 13, 5:27 PM CDT

535 
WWUS20 KWNS 131805
SEL7  
SPC WW 131805
ARZ000-LAZ000-MOZ000-MSZ000-TNZ000-140200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 537
NWS STORM PREDICTION CENTER NORMAN OK
1255 PM CDT MON OCT 13 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  EASTERN ARKANSAS
  NORTHEAST LOUISIANA
  THE MISSOURI BOOTHEEL
  MISSISSIPPI
  WEST TENNESSEE

* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 1255 PM UNTIL
  900 PM CDT.

* PRIMARY THREATS INCLUDE...
  SEVERAL TORNADOES LIKELY WITH A COUPLE INTENSE TORNADOES
    POSSIBLE
  SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75
    MPH POSSIBLE
  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHEAST OF
DYERSBURG TENNESSEE TO 55 MILES EAST SOUTHEAST OF NATCHEZ
MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

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 534...WW 535...WW 536...

DISCUSSION...EXTENSIVE...BROKEN SSW-NNE SQLN NOW EXTENDING FROM NE
LA TO SE MO SHOULD CONTINUE SLOWLY EWD...ROUGHLY WITH THE SPEED OF
SUPPORTING SRN PLNS SHORTWAVE TROUGH. THE LINE LIKELY WILL CONTAIN
ADDITIONAL LONG-LIVED LEWPS/SUB-SYNOPTIC LOWS AS INFLUENCE OF UPR
TROUGH INCREASES...YIELDING STRENGTHENING SSWLY DEEP SHEAR OVER WW
REGION. COUPLED WITH FURTHER HEATING OF VERY
MOIST...WEAKLY-CAPPED...CONFLUENT LOW-LVL ENVIRONMENT E/SE OF THE
LINE...SETUP COULD SUPPORT A FEW LONGER-LIVED SUPERCELLS WITH
TORNADOES...BOTH WITHIN AND AHEAD OF THE LINE. DESPITE MODEST
MID-LVL LAPSE RATES...A COUPLE OF THE TORNADOES COULD BE STRONG
GIVEN LOW LCLS...SIZABLE LOW-LVL DIRECTIONAL SHEAR AND 60+ KT 700 MB
FLOW.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 23040.


...CORFIDI

Tornado Watches in Mississippi, 2014Tornado Watches in Tennessee, 2014Tornado Watches in Louisiana, 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.