000
FLUS43 KFSD 191757
HWOFSD

HAZARDOUS WEATHER OUTLOOK...CORRECTED ACTIVATION STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1255 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-
1141 AM 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 ISOLATED THUNDERSTORMS WILL CONTINUE TO
MOVE NORTHWARD THIS AFTERNOON...MOST PREVALENT FOR AREAS ALONG
THE I 29 CORRIDOR AND POINTS EASTWARD. BECAUSE OF THE RAIN AND
CLOUD COVER...CONDITIONS HAVE STABILIZED FOR THESE AREAS. BUT IF
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.

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 SPIN UPS 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 BE POSSIBLE BETWEEN 4 PM AND 8 PM
MAINLY IN NORTHWEST IOWA AND SOUTHWEST MINNESOTA.

&&

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

$$