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000
FLUS43 KFSD 181651
HWOFSD

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1150 AM CDT SAT MAY 18 2013

SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-191200-
AURORA-BEADLE-BON HOMME-BROOKINGS-BRULE-BUENA VISTA IA-
CHARLES MIX-CHEROKEE IA-CLAY-CLAY IA-COTTONWOOD MN-DAKOTA NE-
DAVISON-DICKINSON IA-DIXON NE-DOUGLAS-GREGORY-HANSON-HUTCHINSON-
IDA IA-JACKSON MN-JERAULD-KINGSBURY-LAKE-LINCOLN-LINCOLN MN-
LYON IA-LYON MN-MCCOOK-MINER-MINNEHAHA-MOODY-MURRAY MN-NOBLES MN-
OBRIEN IA-OSCEOLA IA-PIPESTONE MN-PLYMOUTH IA-ROCK MN-SANBORN-
SIOUX IA-TURNER-UNION-WOODBURY IA-YANKTON-
1150 AM CDT SAT MAY 18 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA...
SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS...
A SMALL CHANCE OF THUNDERSTORMS EXISTS ALONG AND WEST OF THE
JAMES RIVER VALLEY LATE THIS AFTERNOON...WITH THE STORM CHANCES
THEN INCREASING DURING THE EVENING HOURS. ANY STORMS THAT DO FORM
WILL BE CAPABLE OF HAIL TO GOLF BALL SIZE AND WIND GUSTS TO 70
MPH. AN ISOLATED TORNADO WILL BE POSSIBLE TOWARD SOUTH CENTRAL
SOUTH DAKOTA. STORMS WILL BECOME MORE WIDESPREAD OVERNIGHT AND
LATE TONIGHT WITH THE SYSTEM LIKELY ORGANIZING INTO A MULTI
CELLULAR COMPLEX. AS STORMS REACH INTERSTATE 29...THE THREAT WILL
GRADUALLY TRANSITION FROM LARGE HAIL AND DAMAGING WIND...TO
SOLELY DAMAGING WIND OF 60 TO 80 MPH...BEFORE STORMS WEAKEN WELL
AFTER MIDNIGHT TOWARD HIGHWAY 71.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

SOME UNCERTAINTY REMAINS WITH THE SEVERE WEATHER THREAT ON SUNDAY
DUE TO THE DEPENDENCY OF LEFT OVER STORMS FROM TONIGHT. THE
GREATEST THREAT FOR SEVERE WEATHER WILL PROBABLY BE EAST OF THE
JAMES RIVER VALLEY SUNDAY AND SUNDAY EVENING. LARGE HAIL AND
DAMAGING WINDS WILL BE CERTAINLY POSSIBLE WITH ANY ISOLATED
DEVELOPMENT OF STORMS...WITH MULTI CELLULAR CLUSTERING ALSO
POSSIBLE WHICH WOULD CREATE MORE OF A DAMAGING WIND AND HEAVY
RAIN THREAT.

THE CHANCE OF THUNDERSTORMS WILL CONTINUE ACROSS THE AREA ON
MONDAY...ESPECIALLY DURING THE AFTERNOON AND EARLY EVENING. WHILE
SEVERE STORMS PRODUCING DAMAGING WIND AND HAIL ARE NOT
EXPECTED... THERE MAY BE A LOW END THREAT FOR A WEAK TORNADO SPIN
UP OR FUNNEL CLOUD.  THIS THREAT MAY CONTINUE TUESDAY AFTERNOON
ACROSS PARTS OF NORTHWEST IOWA AND SOUTHWEST MINNESOTA.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE LIKELY AFTER 6 PM WEST OF THE JAMES
RIVER AND AFTER 11 PM EAST OF INTESTATE 29.

&&

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.WEATHER.GOV/SIOUXFALLS. THIS INCLUDES THE GRAPHICAL HAZARDOUS
WEATHER OUTLOOK.

$$