First PDS tornado Watch of the season... We have arrived at Spring...

8:30 PM UPDATE
Tornado emergency for areas just north of Little Rock Arkansas

Look at that hook echo, indicative of a strong tornado. The pink area is likely where debris being thrown up by the tornado is. The tornado is likely somewhere near the debris ball. The storm developed extremely rapidly in a few minutes.


Later scan below:


ORIGINAL TEXT:
The SPC has issued our first PDS tornado watch for S Arkansas ahead of a cold front associated with a cutoff low that will be slowly traversing the US this week. High dewpoints in the upper 60s and temps in the 80s along with with a degrading cap will allow storms to take off while a favorable upper level environment with shear will keep the updraft separate from the downdraft, allowing updrafts to persist and begin spinning.

Particularly Dangerous Situation (PDS) Tornado Watch 100

SEL0

   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.