

520 

WWUS20 KWNS 222335

SEL6

SPC WW 222335

NEZ000-230500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 386

NWS STORM PREDICTION CENTER NORMAN OK

630 PM CDT TUE JUN 22 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND EASTERN NEBRASKA



EFFECTIVE THIS TUESDAY NIGHT FROM 630 PM UNTIL MIDNIGHT CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH NORTHEAST OF

ONEILL NEBRASKA TO 35 MILES SOUTH OF HASTINGS NEBRASKA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU6).



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 382...WW 383...WW

384...WW 385...



DISCUSSION...SUPERCELLS IN WRN NEB ARE EXPECTED TO SPREAD EWD INTO

CENTRAL NEB LATER THIS EVENING...WHILE SEVERE STORMS IN KS DEVELOP

NEWD INTO SRN NEB. VERY UNSTABLE AIR MASS COMBINED WITH 60 KT DEEP

LAYER SHEAR WILL BE  FAVORABLE FOR INTENSE SUPERCELLS. VERY LARGE

HAIL SHOULD BE THE MAIN THREAT...THOUGH ELY BOUNDARY LAYER

WINDS...AND ENHANCED SHEAR ALONG A BOUNDARY FROM SOUTH OF OMA TO

NEAR MCK...MIGHT SUPPORT A FEW TORNADOES THE NEXT FEW HOURS. LATER

IN THE EVENING...THE STORMS SHOULD CONGEAL INTO A LINEAR MCS...WITH

WIND DAMAGE BECOMING THE GREATER THREAT AT THAT TIME.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 26025.





...IMY

