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FLUS43 KOAX 122204
HWOOAX
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
504 PM CDT TUE SEP 12 2006
IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-131215-
MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-
PAGE-KNOX-CEDAR-THURSTON-ANTELOPE-PIERCE-WAYNE-BOONE-MADISON-
STANTON-CUMING-BURT-PLATTE-COLFAX-DODGE-WASHINGTON-BUTLER-
SAUNDERS-DOUGLAS-SARPY-SEWARD-LANCASTER-CASS-OTOE-SALINE-
JEFFERSON-GAGE-JOHNSON-NEMAHA-PAWNEE-RICHARDSON-
504 PM CDT TUE SEP 12 2006
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NEBRASKA
AND SOUTHWEST IOWA.
.DAY ONE...TONIGHT AND WEDNESDAY
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
.DAYS TWO THROUGH SEVEN...WEDNESDAY NIGHT THROUGH TUESDAY
THERE IS A CHANCE OF THUNDERSTORMS THIS WEEKEND. SEVERE WEATHER IS
POSSIBLE...ESPECIALLY SATURDAY AFTERNOON AND EVENING. DAMAGING
WINDS AND LARGE HAIL WOULD BE THE PRIMARY HAZARDS...BUT THE
PATTERN FORECAST SUGGESTS THAT EVEN TORNADOES WOULD BE POSSIBLE. A
LARGE UPPER LEVEL STORM SYSTEM WILL MOVE FROM THE NORTHERN ROCKIES
ONTO THE PLAINS DURING THIS TIME PERIOD. THE SYSTEM WILL LIKELY
ALLOW GULF MOISTURE TO STREAM NORTHWARD AND WILL ALSO CONTAIN
STRONG LOWER AND UPPER LEVEL WINDS WHICH COULD PROVIDE THE
NECESSARY WIND SHEAR FOR SEVERE WEATHER.
THUNDERSTORMS COULD BEGIN OVER PARTS OF THE OUTLOOK AREA AS EARLY
AS FRIDAY AFTERNOON. HOWEVER...CHANCES INCREASE AREAWIDE FRIDAY
NIGHT AS WARM AND MOIST AIR STREAMS NORTH AND A LEAD DISTURBANCE
ROTATES AROUND THE ABOVE MENTIONED UPPER SYSTEM. WITH A RELATIVELY
STRONG LOW LEVEL JET EXPECTED FRIDAY NIGHT...A FEW STORMS COULD
PRODUCE MARGINALLY SEVERE HAIL OR WINDS. AFTER A BRIEF LULL IN
THE ACTIVITY THE FIRST PART OF SATURDAY...THUNDERSTORM CHANCES
INCREASE AGAIN SATURDAY AFTERNOON AND EVENING. THE UPPER LEVEL
SYSTEM IS FORECAST TO APPROACH THE AREA BY THEN AND IT COULD FIRST
PUSH A DRY LINE ACROSS THE AREA IN THE AFTERNOON FOLLOWED BY A
COLD FRONT DURING THE EVENING HOURS.
ALTHOUGH THUNDERSTORM CHANCES CONTINUE INTO SUNDAY...THE SEVERE
WEATHER THREAT...AT THIS TIME...APPEARS TO DECREASE MARKEDLY FROM
LATE SATURDAY NIGHT THROUGH SUNDAY.
.SPOTTER INFORMATION STATEMENT...
STORM SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT OR WEDNESDAY.
