Tornado Watch 100

Issued

Apr 27, 2014, 3:36 PM CDT (20:36 UTC)

Expired

Apr 27, 2014, 11:00 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Particularly dangerous situation

Yes

Largest hail expected

2.5 in

Strongest gust expected

70 kt

The Little Rock radar (KLZK), 78 km from the middle of the area, began a volume at 20:38 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

95%

One or more EF2 to EF5 tornadoes

80%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

80%

One or more hailstones of 2 inches or more

60%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 420Apr 27, 12:25 PM CDT
• Mesoscale Discussion 427Apr 27, 4:52 PM CDT
• Mesoscale Discussion 431Apr 27, 6:11 PM CDT
• Mesoscale Discussion 435Apr 27, 7:15 PM CDT
• Mesoscale Discussion 439Apr 27, 8:43 PM CDT
• Mesoscale Discussion 440Apr 27, 9:59 PM CDT

421 
WWUS20 KWNS 272040
SEL0  
SPC WW 272040
ARZ000-OKZ000-280400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 100
NWS STORM PREDICTION CENTER NORMAN OK
335 PM CDT SUN APR 27 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  SOUTHWEST AND CENTRAL ARKANSAS
  EXTREME SOUTHEAST OKLAHOMA

* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 335 PM UNTIL
  1100 PM CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

* PRIMARY THREATS INCLUDE...
  NUMEROUS TORNADOES EXPECTED WITH A FEW INTENSE TORNADOES LIKELY
  WIDESPREAD LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2.5
    INCHES IN DIAMETER LIKELY
  SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 80
    MPH POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 30 MILES NORTH OF DE QUEEN
ARKANSAS TO 50 MILES EAST NORTHEAST OF PINE BLUFF ARKANSAS.  FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU0).

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 95...WW 96...WW 97...WW
98...WW 99...

DISCUSSION...DISCRETE STORMS ARE BEGINNING TO DEVELOP ALONG THE
DRYLINE NEAR THE RED RIVER IN SE OK...WHILE OTHER CONVECTION IS
EXPECTED TO DEVELOP FARTHER S IN NE TX THE REMAINDER OF THE
AFTERNOON.  THESE STORMS WILL MOVE ENEWD INTO THE WARM SECTOR AND
MATURE...AND WILL ENCOUNTER AN INCREASINGLY FAVORABLE ENVIRONMENT
FOR TORNADOES IN AR.  LOW-LEVEL SHEAR IS VERY STRONG ALONG A
RESIDUAL OUTFLOW BOUNDARY ACROSS CENTRAL AR...AND THE LOW LEVELS
WILL SLOWLY WARM AND MOISTEN IN THE WAKE OF EARLIER CONVECTION. 
DISCRETE SUPERCELLS MOVING INTO THIS ENVIRONMENT WILL HAVE THE
POTENTIAL TO PRODUCE LONG TRACK...STRONG/VIOLENT TORNADOES WELL INTO
THE EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 24035.


...THOMPSON

Tornado Watches in Arkansas, 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.