

569 

WWUS20 KWNS 180212

SEL4

SPC WW 180212

KSZ000-NEZ000-180500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 464

NWS STORM PREDICTION CENTER NORMAN OK

910 PM CDT SUN AUG 17 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  NORTH CENTRAL KANSAS

  SOUTH CENTRAL NEBRASKA



* EFFECTIVE THIS SUNDAY NIGHT FROM 910 PM UNTIL MIDNIGHT CDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45

STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES SOUTHEAST OF

RUSSELL KANSAS TO 75 MILES NORTH OF CONCORDIA KANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU4).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 462...WW 463...



DISCUSSION...S CNTRL NEB MCS WITH EMBEDDED BOWING STRUCTURES

EXPECTED TO CONTINUE GENERALLY SE ALONG INSTABILITY GRADIENT THROUGH

LATE EVE...WHILE SMALLER N CNTRL KS MOVES ESEWD. ALTHOUGH DIURNAL

COOLING SHOULD LEAD TO SOME WEAKENING OF UPDRAFTS...THIS WILL BE

SOMEWHAT COUNTERED BY NOCTURNAL INCREASE IN SWLY LLJ. MERGING

OUTFLOW BOUNDARIES ASSOCIATED WITH THE TWO CLUSTERS ALSO MAY FOSTER

NEW STORM DEVELOPMENT. MODEST NWLY DEEP SHEAR AND SIZABLE BUOYANCY

SUGGEST A CONTINUED RISK FOR ISOLD DMGG WIND AND SVR HAIL.



AVIATION...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 550. MEAN STORM

MOTION VECTOR 33025.





...CORFIDI



837 

WWUS20 KWNS 180212

SEL4

SPC WW 180212

KSZ000-NEZ000-180500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 464

NWS STORM PREDICTION CENTER NORMAN OK

910 PM CDT SUN AUG 17 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  NORTH CENTRAL KANSAS

  SOUTH CENTRAL NEBRASKA



* EFFECTIVE THIS SUNDAY NIGHT FROM 910 PM UNTIL MIDNIGHT CDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45

STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES SOUTHEAST OF

RUSSELL KANSAS TO 75 MILES NORTH OF CONCORDIA KANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU4).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 462...WW 463...



DISCUSSION...S CNTRL NEB MCS WITH EMBEDDED BOWING STRUCTURES

EXPECTED TO CONTINUE GENERALLY SE ALONG INSTABILITY GRADIENT THROUGH

LATE EVE...WHILE SMALLER N CNTRL KS MOVES ESEWD. ALTHOUGH DIURNAL

COOLING SHOULD LEAD TO SOME WEAKENING OF UPDRAFTS...THIS WILL BE

SOMEWHAT COUNTERED BY NOCTURNAL INCREASE IN SWLY LLJ. MERGING

OUTFLOW BOUNDARIES ASSOCIATED WITH THE TWO CLUSTERS ALSO MAY FOSTER

NEW STORM DEVELOPMENT. MODEST NWLY DEEP SHEAR AND SIZABLE BUOYANCY

SUGGEST A CONTINUED RISK FOR ISOLD DMGG WIND AND SVR HAIL.



AVIATION...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 550. MEAN STORM

MOTION VECTOR 33025.





...CORFIDI

