000
FLUS43 KFSD 191844
HWOFSD

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
142 PM CDT SUN MAY 19 2013

SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-
IAZ001>003-012>014-020>022-031-032-NEZ013-014-201200-
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-
142 PM CDT SUN MAY 19 2013

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

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS...
OCCASIONAL SHOWERS AND SCATTERED THUNDERSTORMS WILL CONTINUE TO
MOVE NORTHWARD THIS AFTERNOON...MOST PREVALENT FOR AREAS EAST OF
THE JAMES RIVER VALLEY. BECAUSE OF THE RAIN AND CLOUD
COVER...CONDITIONS HAVE STABILIZED FOR THESE AREAS. BUT IF ENOUGH
HEATING CAN TAKE PLACE BY THE MID AFTERNOON HOURS...A SEVERE
WEATHER THREAT WILL CERTAINLY EXIST MAINLY ALONG AND EAST OF A
SIOUX CITY IOWA TO MARSHALL MINNESOTA LINE. CONDITIONALLY IF THIS
HAPPENS...A LINE OF STORMS WILL LIKELY QUICKLY FORM...THEN MOVE
EASTWARD DURING THE EVENING HOURS. THE PRIMARY THREAT WILL
THEREFORE BE LARGE HAIL OF UP TO A HALF DOLLAR SIZE AND WINDS OF
60 TO 70 MPH IN THE SEVERE CELLS...MAINLY IN THE 4 PM TO 8 PM
TIME FRAME. IN ADDITION...AN ISOLATED TORNADO IS A POSSIBILITY
FROM AREAS NEAR MARSHALL MINNESOTA TO SPENCER IOWA THROUGH LATE
SUNDAY AFTERNOON.

FLOODING...
AREAS OF HEAVY RAINFALL LATE THIS AFTERNOON AND EARLY THIS
EVENING COULD LEAD TO A SPOTTY FLASH FLOODING THREAT FOR
NORTHWEST IOWA AND PORTIONS OF SOUTHWEST MINNESOTA NEAR AND EAST
OF HIGHWAY 60. RAINFALL RATES OF 1 TO 2 INCHES PER HOUR WILL BE
POSSIBLE IN MORE INTENSE THUNDERSTORMS.


.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

AN ISOLATED THUNDERSTORM ON LATER MONDAY AFTERNOON OR EARLY
MONDAY EVENING COULD PRODUCE MARGINALLY LARGE HAIL EAST OF A
STORM LAKE TO MARSHALL LINE.

SHOWERS AND THUNDERSTORMS WILL DEVELOP AGAIN DURING THE DAY ON
TUESDAY. HOWEVER...THE ENVIRONMENT ON TUESDAY APPEARS TO BE
FAVORABLE FOR DEVELOPMENT OF QUICK TORNADIC SPINUPS DURING THE
DEVELOPING PHASE OF SHOWERS AND THUNDERSTORMS ALONG AND EAST OF
INTERSTATE 29. THE MOST LIKELY TIME FOR ANY TORNADIC DEVELOPMENT
WILL BE FROM NOON TO 4 PM AS A AREA OF SHOWERS AND THUNDERSTORMS
IS EXPECTED TO BECOME MORE PREVALENT.


.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL POSSIBLE BETWEEN 4 PM AND 8 PM
MAINLY IN SOUTHWEST MINNESOTA AND NORTHWEST IOWA.

&&

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

$$