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Severe Thunderstorm Watch
Issued at Mon 11:38 PM May. 20
Issued by: National Weather Service
Description
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH274 UNTIL 7 AM CDT TUESDAY WHICH REPLACES A PORTION OF SEVERETHUNDERSTORM WATCH 271. THE NEW WATCH IS VALID FOR THE FOLLOWINGAREASIN IOWA THE NEW WATCH INCLUDES 4 COUNTIESIN SOUTHWEST IOWAHARRISON POTTAWATTAMIE SHELBYIN WEST CENTRAL IOWAMONONAIN NEBRASKA THE NEW WATCH INCLUDES 22 COUNTIESIN EAST CENTRAL NEBRASKABURT BUTLER DODGEDOUGLAS SARPY SAUNDERSWASHINGTONIN NORTHEAST NEBRASKABOONE COLFAX CUMINGMADISON PLATTE STANTONTHURSTONIN SOUTHEAST NEBRASKACASS GAGE JEFFERSONJOHNSON LANCASTER OTOESALINE SEWARDTHIS INCLUDES THE CITIES OF ALBION, ASHLAND, BEATRICE, BELLEVUE,BLAIR, COLUMBUS, COUNCIL BLUFFS, CRETE, DAVID CITY, DECATUR,DUNLAP, FAIRBURY, FREMONT, HARLAN, LA VISTA, LINCOLN, LOGAN,LYONS, MACY, MAPLETON, MILFORD, MISSOURI VALLEY, NEBRASKA CITY,NORFOLK, OAKLAND, OMAHA, ONAWA, PAPILLION, PENDER, PLATTSMOUTH,SCHUYLER, SEWARD, ST. EDWARD, STANTON, STERLING, TECUMSEH,TEKAMAH, WAHOO, WALTHILL, WEST POINT, WILBER, WINNEBAGO, WISNER,WOODBINE, AND YUTAN.
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Flood Watch
Issued at Mon 7:14 PM May. 20
Issued by: National Weather Service
Recommended Action

You should monitor later forecasts and be alert for possible FloodWarnings. Those living in areas prone to flooding should be preparedto take action should flooding develop.

Description

The best chances for heavy rain overnight has been shifting south.As a result, have trimmed a few northern counties off of the watchand added a few counties on the southern edge of the watch.* WHAT...Flooding caused by excessive rainfall continues to bepossible.* WHERE...Portions of Iowa, including the following counties,Harrison, Monona, Pottawattamie and Shelby and Nebraska, includingthe following counties, Burt, Butler, Colfax, Cuming, Dodge,Douglas, Platte, Sarpy, Saunders, Thurston and Washington.* WHEN...Through Tuesday evening.* IMPACTS...Excessive runoff may result in flooding of rivers,creeks, streams, and other low-lying and flood-prone locations.* ADDITIONAL DETAILS...- Multiple rounds of heavy precipitation is expected with anincreasing potential for training thunderstorms to developafter midnight. A second round of heavy rain is expectedTuesday late morning and afternoon. This will bring thethreat for flash flooding and river flooding across portionsof northeast Nebraska, east-central Nebraska, and west-central Iowa.- http://www.weather.gov/safety/flood