000 FLUS43 KOAX 211020 HWOOAX IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-211700- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 520 AM CDT SAT JUN 21 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EASTERN NEBRASKA AND SOUTHWEST IOWA. .DAY ONE...TODAY AND TONIGHT THERE WILL BE A CHANCE OF THUNDERSTORMS TODAY AND TONIGHT ACROSS MUCH OF EASTERN NEBRASKA AND SOUTHWEST IOWA. MOST STORMS TODAY SHOULD REMAIN BELOW SEVERE LEVELS DUE TO LIMITED INSTABILITY...HOWEVER A FEW SEVERE STORMS WILL BE POSSIBLE TONIGHT AS MOISTURE AND INSTABILITY INCREASE ACROSS THE AREA. THE BEST POTENTIAL FOR SEVERE STORMS TONIGHT WILL GENERALLY BE WEST OF A LINE FROM ONAWA IOWA TO BEATRICE. THE MAIN SEVERE WEATHER THREATS ARE EXPECTED TO BE LARGE HAIL AND DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS ACROSS MUCH OF EASTERN NEBRASKA AND SOUTHWEST IOWA SUNDAY AFTERNOON INTO SUNDAY NIGHT. THE ATMOSPHERE IS EXPECTED TO BECOME VERY UNSTABLE SUNDAY AFTERNOON...AND WIND SHEAR SHOULD ALSO BE SUFFICIENT FOR RAPID DEVELOPMENT OF SUPERCELL THUNDERSTORMS BY LATE SUNDAY AFTERNOON. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY SEVERE WEATHER THREATS...HOWEVER A FEW TORNADIC SUPERCELLS ALSO POSSIBLE. THE CHANCE OF THUNDERSTORMS...SOME POSSIBLY SEVERE...WILL CONTINUE ON MONDAY AS VERY UNSTABLE AIR REMAINS IN PLACE ACROSS THE REGION. THERE WILL BE NEARLY A DAILY CHANCE OF THUNDERSTORMS ACROSS AREA TUESDAY THROUGH FRIDAY...HOWEVER...IT IS TOO SOON TO DETERMINE THE COVERAGE AND INTENSITY OF THESE THUNDERSTORMS AT THIS TIME. .SPOTTER INFORMATION STATEMENT... STORM SPOTTER ACTIVATION MAY BE NEEDED TONIGHT GENERALLY WEST OF A LINE FROM ONAWA IOWA TO BEATRICE. $$ KING