Severe Thunderstorm Watch

SEVERE THUNDERSTORM WATCH 304 REMAINS IN EFFECT UNTIL 1200 AM CDT
FOR THE FOLLOWING LOCATIONS

IAC021-035-041-047-059-063-085-093-119-133-141-143-147-149-161-
165-167-193-280500-
/O.CON.KWNS.SV.A.0304.000000T0000Z-120528T0500Z/

IA 

.    IOWA COUNTIES INCLUDED ARE

BUENA VISTA          CHEROKEE            CLAY                
CRAWFORD             DICKINSON           EMMET               
HARRISON             IDA                 LYON                
MONONA               O'BRIEN             OSCEOLA             
PALO ALTO            PLYMOUTH            SAC                 
SHELBY               SIOUX               WOODBURY

Flash Flood Watch

.A STRONG UPPER AIR DISTURBANCE WILL MOVE NORTHEASTWARD THIS
EVENING AHEAD OF A COLD FRONT. AS WHAT HAS BEEN A TREND
RECENTLY... THIS STORM SYSTEM WILL LIKELY CREATE AREAS OF HEAVY
RAIN ALONG AND EAST OF A YANKTON...TO SIOUX FALLS...TO NEAR
MARSHALL MINNESOTA LINE...ESPECIALLY DURING THE EVENING HOURS.

AREAS OF ONE TO TWO INCHES OF RAIN WILL LIKELY OCCUR IN THESE
AREAS...WITH LOCALLY HEAVIER AMOUNTS POSSIBLE. WIDESPREAD RAINFALL
OF TWO TO FOUR INCHES AND MORE HAS OCCURRED THROUGHOUT THIS
AREA OVER THE LAST WEEK...CREATING SATURATED GROUND. THE RAINFALL WILL
TAPER OFF AFTER MIDNIGHT TONIGHT...WITH LARGE RAINFALL AMOUNTS NOT
EXPECTED FOR THE UPCOMING WEEK.

IAZ001>003-012>014-020>022-031-032-MNZ072-080-081-089-090-097-098-
NEZ014-SDZ071-280400-
/O.CON.KFSD.FF.A.0003.120527T2200Z-120528T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LYON-OSCEOLA-DICKINSON-SIOUX-OBRIEN-CLAY-PLYMOUTH-CHEROKEE-
BUENA VISTA-WOODBURY-IDA-MURRAY-COTTONWOOD-NOBLES-JACKSON-
PIPESTONE-ROCK-DAKOTA-UNION-
INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD...

LARCHWOOD...SIBLEY...SPIRIT LAKE...MILFORD...ARNOLDS PARK...

ORANGE CITY...SIOUX CENTER...SHELDON...HARTLEY...SANBORN...

SPENCER...LE MARS...CHEROKEE...STORM LAKE...SIOUX CITY...

IDA GROVE...HOLSTEIN...BATTLE CREEK...MARSHALL...SLAYTON...

FULDA...WINDOM...MOUNTAIN LAKE...WORTHINGTON...JACKSON...

LAKEFIELD...PIPESTONE...LUVERNE...SOUTH SIOUX CITY...

NORTH SIOUX CITY...BERESFORD...ELK POINT...ALCESTER...JEFFERSON
256 PM CDT SUN MAY 27 2012

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY MORNING...

THE FLASH FLOOD WATCH CONTINUES FOR

* PORTIONS OF NORTHWEST IOWA...SOUTHWEST MINNESOTA...NORTHEAST 
NEBRASKA AND SOUTHEAST SOUTH DAKOTA...INCLUDING THE FOLLOWING 
AREAS...IN NORTHWEST IOWA...BUENA VISTA...CHEROKEE...CLAY... 
DICKINSON...IDA...LYON...OBRIEN...OSCEOLA...PLYMOUTH...SIOUX 
AND WOODBURY. IN SOUTHWEST MINNESOTA...COTTONWOOD...JACKSON... 
LYON...MURRAY...NOBLES...PIPESTONE AND ROCK. IN NORTHEAST 
NEBRASKA...DAKOTA. IN SOUTHEAST SOUTH DAKOTA...UNION. 

* THROUGH MONDAY MORNING

* RAINFALL TOTALS COULD AVERAGE A WIDESPREAD ONE TO TWO INCHES
TONIGHT...WITH LOCALLY HEAVIER AMOUNTS. THE WATCH AREA HAS
RECEIVED A WIDESPREAD TWO TO FOUR INCHES OF RAIN OVER THE LAST
SEVERAL DAYS...MAKING THE GROUNDS NEARLY SATURATED.

* FLOODING IS POSSIBLE IN LOW LYING AND POOR DRAINAGE AREAS. IN 
ADDITION...HEAVY RAINFALL IN SHORT PERIODS OF TIME FREQUENTLY 
CAUSE URBAN FLOODING AND CAN WASH OUT UNPAVED RURAL ROADS. 
SATURATED GROUND WILL ADD TO FLOODING POTENTIAL. IN ADDITION 
TO THE THREAT OF FLASH FLOODING...THE HEAVY RAINS COULD ALSO 
RESULT IN FLOODING ALONG AREA CREEKS AND RIVERS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

Hazardous Weather Outlook

1135 AM CDT SUN MAY 27 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA...

SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS...

AN ELEVATED RISK OF SEVERE THUNDERSTORMS EXISTS LATE THIS
AFTERNOON AND THROUGHOUT THE EVENING. SCATTERED STORMS ARE EXPECTED 
TO DEVELOP LATE THIS AFTERNOON...MERGING INTO A CONVECTIVE COMPLEX 
AS THE EVENING PROGRESSES. EARLY IN THIS EVENT...ANY ISOLATED TO 
SCATTERED CELLS COULD PRODUCE HAIL UP TO THE SIZE OF GOLF BALLS.

THEN THROUGH THE EVENING...THE COMPLEX OF STORMS WILL GIVE BOTH A 
HAIL AND DAMAGING WIND THREAT. DAMAGING WINDS IN EXCESS OF 70 MPH 
ARE POSSIBLE ALONG AND EAST OF A YANKTON...TO SIOUX FALLS TO 
MARSHALL MINNESOTA LINE...WITH THE HAIL POTENTIAL DECREASING 
MODESTLY TO ABOUT HALF DOLLAR SIZE.

FLOODING...

A STORM COMPLEX IS EXPECTED TO DEVELOP AND MOVE EASTWARD THIS
EVENING. ONE TO TWO INCHES OF RAIN WITH LOCALLY HEAVIER AMOUNTS
IS LIKELY TO OCCUR IN MUCH OF SOUTHWEST MINNESOTA AND NORTHWEST
IOWA...AND ALSO IN A SMALL AREA OF EXTREME SOUTHEAST SOUTH DAKOTA
AND FAR NORTHEAST NEBRASKA. THESE AREAS HAVE ALSO RECEIVED A
WIDESPREAD TWO TO FOUR INCHES OF RAIN THE PAST SEVERAL DAYS CREATING
SATURATED GROUND. THEREFORE URBAN AND RURAL FLASH FLOODING IS
POSSIBLE IN THESE AREAS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE LIKELY AFTER 4 PM TO MIDNIGHT TONIGHT.

&&

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

There are currently no Special Weather Statements Cherokee, .

There are currently no Short Term Forecasts Cherokee, .