Hail and Damaging Winds in Nebraska, July 23, 2001

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
425 PM CDT MON JUL 23 2001

SPC IS ABOUT TO DROP A SVR BOX ON MOST OF OUR CWA UNTIL AT LEAST
01Z. MORE DETAILS TO FOLLOW...

.LBF...SVR T-STORM WATCH UNTIL 01Z FOR MUCH OF CWA.

SLM

NEZ004>010-022>029-035>038-056>059-069>071-232045-

SEVERE WEATHER OUTLOOK FOR WESTERN AND NORTH CENTRAL NEBRASKA
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1116 AM CDT MON JUL 23 2001

...STORM SPOTTER ACTIVATION MAY BE NECESSARY THIS AFTERNOON AND
TONIGHT...

STORM SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND TONIGHT
ACROSS ALL OF WESTERN AND NORTH CENTRAL NEBRASKA. WIDELY SCATTERED
THUNDERSTORMS ARE POSSIBLE ACROSS NORTHWESTERN AND FAR WESTERN
PORTIONS OF THE OUTLOOK AREA THIS AFTERNOON. OVERNIGHT...ALL OF THE
OUTLOOK AREA WILL SEE THE POSSIBILITY OF SEVERE THUNDERSTORMS.

AN UPPER LEVEL DISTURBANCE MOVING OUT OF WYOMING WILL ENCOUNTER
MOIST UNSTABLE AIR OVER THE NEBRASKA PANHANDLE BY MID DAY. SHOWERS
AND THUNDERSTORMS WILL DEVELOP MAINLY WEST OF A VALENTINE TO NORTH
PLATTE LINE. DUE TO DRIER AIR IN THE MID LEVELS OF THE ATMOSPHERE...
DOWNBURST WINDS WILL BE THE MAIN SEVERE WEATHER THREAT.

OVERNIGHT...TWO UPPER LEVEL DISTURBANCES WILL ENTER WESTERN AND
NORTH CENTRAL NEBRASKA. THE FIRST WILL MOVE ACROSS NORTHERN PORTIONS
OF THE OUTLOOK AREA...MAINLY NORTH OF A LINE FROM BARTLETT TO
ANTIOCH. DUE TO COOLER TEMPERATURES ALOFT...THE GREATEST SEVERE
WEATHER THREAT FROM THESE STORMS WILL BE FROM LARGE HAIL AND
DOWNBURST WINDS. SOUTH OF THIS LINE...OVER SOUTHERN PORTIONS OF
THE OUTLOOK AREA...ANOTHER UPPER LEVEL DISTURBANCE WILL MOVE INTO
SOUTHWESTERN NEBRASKA LATE TONIGHT. THE DISTURBANCE WILL INTERACT
WITH FRONTAL BOUNDARY DRAPED ACROSS THE KANSAS NEBRASKA BORDER. WITH
GOOD LOW LEVEL MOISTURE IN PLACE...THUNDERSTORMS WILL MAINTAIN THEIR
STRENGTH WELL INTO THE OVERNIGHT HOURS. THE MAIN SEVERE THREAT FROM
THESE THUNDERSTORMS WILL BE FROM DAMAGING WINDS.

CLB