Severe Thunderstorm Warning 8, NWS Sioux Falls, SD

088 
WWUS53 KFSD 102022
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
322 PM CDT TUE MAY 10 2016

SDC023-053-102045-
/O.CON.KFSD.SV.W.0008.000000T0000Z-160510T2045Z/
GREGORY SD-CHARLES MIX SD-
322 PM CDT TUE MAY 10 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR SOUTH CENTRAL GREGORY AND NORTH CENTRAL CHARLES MIX COUNTIES...

AT 322 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES NORTH OF
BONESTEEL...OR 20 MILES WEST OF LAKE ANDES...MOVING NORTHEAST AT 20
MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING...AND TREES. 

THIS SEVERE STORM WILL BE NEAR...
  GEDDES AROUND 345 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4306 9899 4320 9914 4343 9885 4321 9862
TIME...MOT...LOC 2022Z 243DEG 16KT 4321 9893 

HAIL...1.00IN
WIND...60MPH
 
$$

BT

093 
WWUS53 KFSD 102031
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
331 PM CDT TUE MAY 10 2016

SDC023-053-102041-
/O.CAN.KFSD.SV.W.0008.000000T0000Z-160510T2045Z/
GREGORY SD-CHARLES MIX SD-
331 PM CDT TUE MAY 10 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL GREGORY AND
NORTH CENTRAL CHARLES MIX COUNTIES IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED.
THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4306 9899 4320 9914 4343 9885 4321 9862
TIME...MOT...LOC 2029Z 232DEG 16KT 4324 9889 

$$

BT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SIOUX FALLS SD
307 PM CDT TUE MAY 10 2016

.SHORT TERM...(THIS EVENING THROUGH WEDNESDAY)
ISSUED AT 306 PM CDT TUE MAY 10 2016

THE MAIN CONCERNS FOR THE NEXT 24 HOURS WILL BE THE POTENTIAL FOR
ISOLATED SEVERE STORMS LATE THIS AFTERNOON AND EVENING THEN THE
POTENTIAL FOR HEAVIER RAIN LATE TONIGHT INTO TOMORROW. FOR THIS
AFTERNOON AN UPPER LEVEL LOW OVER NORTHERN PARTS OF THE WESTERN HIGH
PLAINS WILL SPREAD SOME SLIGHTLY COOLER AIR ALOFT INTO CENTRAL SOUTH
DAKOTA. THIS ALONG WITH DECENT DIURNAL HEATING AND INCREASING
EFFECTS OF THE INCOMING JET MAX WILL ALLOW THUNDERSTORMS TO DEVELOP
ALONG AND WEST OF THE JAMES RIVER VALLEY BY ABOUT 2 PM. WITH CAPE
VALUES AROUND 1000 TO 1500 J/KG AND DEEP LAYER BULK SHEAR VALUES
ABOUT 25 TO 30 KNOTS SEVERE WEATHER NOT TOO LIKELY. NOT OUT OF THE
QUESTION TO GET ONE OR TWO SEVERE STORMS BUT COVERAGE OF
SEVERE THUNDERSTORMS SHOULD REMAIN FAIRLY LOW.

AFTER MIDNIGHT A PIECE OF ENERGY ROUNDS THE BASE OF THE TROUGH AND
WILL MOVE INTO THE AREA OVERNIGHT. AT THIS TIME THE UPPER LEVEL FLOW
BECOMES A BIT PARALLEL TO THE LOW LEVEL BOUNDARY WHICH MIGHT SUPPORT
SOME HEAVIER RAINFALL. SINCE NORTHWEST IOWA HAD A FEW LOCATIONS WITH
2 TO 4 INCHES OF RAINFALL LAST NIGHT WILL NEED TO KEEP A CLOSE EYE
ON FLOODING POTENTIAL. AT THIS TIME NOT SURE THE MOISTURE AND
INSTABILITY ARE QUITE THERE FOR ANOTHER 2 OR 3 INCHES OF RAIN SO
WILL HOLD OFF ON A FLASH FLOOD WATCH AT THIS TIME. DO HOWEVER
BELIEVE THAT THERE IS A DECENT CHANCE FOR 1 TO 2 INCHES OVER FAR
SOUTHEAST SOUTH DAKOTA INTO NORTHWEST IOWA SO AGAIN...WILL NEED TO
KEEP AN EYE ON PARAMETERS. THREE HOUR FLASH FLOOD GUIDANCE AT ABOUT
1.5 INCHES WHILE SIX HOUR IS A LITTLE OVER 2 INCHES.

MOST OF THE RAINFALL WILL BE EAST OF INTERSTATE 29 BY NOON AND
MOSTLY OUT OF THE AREA BY LATE AFTERNOON.

.LONG TERM...(WEDNESDAY NIGHT THROUGH TUESDAY)
ISSUED AT 306 PM CDT TUE MAY 10 2016

NORTHWEST WINDS WILL INCREASE WEDNESDAY EVENING BEHIND TROUGH MOVING
THROUGH THE AREA...BUT WILL BE FIGHTING DIURNAL DECOUPLING.  MAY
HAVE SOME SHOWERS EARLY IN THE EAST...BUT THEREAFTER EXPECT CLEARING
CONDITIONS.  IF SURFACE INVERSION IS ABLE TO SET UP...MAY SEE SOME
PATCHY AREAS OF FOG TRY TO DEVELOP OVERNIGHT.

ON THURSDAY SHOULD SEE STRONG MIXING WITH NORTHWEST FLOW THROUGHOUT
THE DEPTH OF THE TROPOSPHERE.  HAVE RAISED HIGHS SLIGHTLY WITH
MOSTLY CLEAR SKIES EXPECTED.

TRANSIENT WAVE IS EXPECTED TO IMPACT THE AREA FRIDAY MORNING AS IT
WORKS THROUGH THE AREA.  HAVE RAISED POPS WITH THIS
FEATURE...ESPECIALLY DURING THE MORNING HOURS ON FRIDAY. WITH FAIR
AMOUNT OF CLOUDS AROUND AND 850 HPA TEMPS FALLING TO NEAR
ZERO....WILL BE A STRUGGLE FOR TEMPERATURES TO CLIMB INTO THE MID
50S.

A COOL PATTERN WILL CONTINUE IN A WEST NORTHWESTERLY UPPER FLOW
THROUGH THE WEEKEND. LIGHT WINDS AND NIGHTTIME COOLING MAY BRING A
FROST THREAT LATE FRIDAY NIGHT AND EARLY SATURDAY MORNING. HIGH
TEMPERATURES WILL BE IN THE 50S INTO THE 60S. WITH NO DISTINCT WAVES
PASSING DURING THE WEEKEND...EXPECT AT  THIS TIME FOR PRECIPITATION TO
STAY OUT.

THE COOL PATTERN WILL MODIFY ONLY A LITTLE MONDAY AND TUESDAY AS
WEAK CENTRAL PLAINS RIDGING BATTLES THE WEST NORTHWESTERLY FLOW. A
WEAK WAVE FOLLOWING THE RIDGING MAY BRING A FEW LIGHT SHOWERS BUT
NOTHING SEVERE OR HEAVY IS FORESEEN. HIGH TEMPERATURES SHOULD BE IN
THE 60S.

&&

.AVIATION...(FOR THE 12Z TAFS THROUGH 12Z WEDNESDAY MORNING)
ISSUED AT 634 AM CDT TUE MAY 10 2016

MVFR AND IFR CEILINGS AND VISIBILITY HAVE DEVELOPED ACROSS
NORTHWEST IOWA AND SOUTHWEST MINNESOTA...WITH MORE PATCHY LOW
CEILINGS ACROSS SOUTHEAST SD. EXPECT THE CONDITIONS TO STEADILY
IMPROVE THIS MORNING...PERHAPS LINGERING INTO THE EARLY AFTERNOON
IN SOUTHWEST MINNESOTA. A FRONT WILL BEGIN WORKING INTO SOUTHEAST
SD THIS AFTERNOON AND EVENING...WITH SHOWERS AND THUNDERSTORMS
DEVELOPING AHEAD OF THE FRONT. A FEW STRONGER STORMS COULD DROP
VISIBILITIES INTO THE MVFR OR BRIEF IFR CATEGORY UNDER THE
STORMS. EXPECT LIGHTNING AND LOCALLY GUSTY WINDS AS WELL AS SMALL
HAIL THROUGH AROUND MID EVENING. STORMS SHIFT EAST INTO IOWA AND
MINNESOTA LATE EVENING/OVERNIGHT WITH CEILINGS LIKELY EXPECTED TO
LOWER AGAIN TO MVFR/IFR OVERNIGHT.

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
SD...NONE.
MN...NONE.
IA...NONE.
NE...NONE.
&&

SHORT TERM...08
LONG TERM...BT
AVIATION...

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
435 AM CDT TUE MAY 10 2016

IAZ001-012-020-031-MNZ071-097-098-NEZ013-014-SDZ038>040-050-
052>071-110945-
LYON IA-SIOUX-PLYMOUTH-WOODBURY-LINCOLN MN-PIPESTONE-ROCK-DIXON-
DAKOTA-BEADLE-KINGSBURY-BROOKINGS-GREGORY-JERAULD-SANBORN-MINER-
LAKE-MOODY-BRULE-AURORA-DAVISON-HANSON-MCCOOK-MINNEHAHA-
CHARLES MIX-DOUGLAS-HUTCHINSON-TURNER-LINCOLN SD-BON HOMME-
YANKTON-CLAY SD-UNION-
435 AM CDT TUE MAY 10 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
IOWA...WEST CENTRAL IOWA...SOUTHWEST MINNESOTA...NORTHEAST
NEBRASKA...CENTRAL SOUTH DAKOTA...EAST CENTRAL SOUTH DAKOTA...
SOUTH CENTRAL SOUTH DAKOTA AND SOUTHEAST SOUTH DAKOTA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS WILL DEVELOP ACROSS THE AREA THIS AFTERNOON AND
PUSH EASTWARD TONIGHT. SOME OF THESE STORMS COULD PRODUCE WIND
GUSTS TO 40 MPH AND PEA SIZE HAIL...WITH ISOLATED STORMS PRODUCING
WINDS TO 60 MPH AND HAIL TO THE SIZE OF QUARTERS DURING THE LATE
AFTERNOON AND EVENING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE POSSIBLE AFTER 3 PM.

IAZ002-003-013-014-021-022-032-MNZ072-080-081-089-090-110945-
OSCEOLA-DICKINSON-O'BRIEN-CLAY IA-CHEROKEE-BUENA VISTA-IDA-
LYON MN-MURRAY-COTTONWOOD-NOBLES-JACKSON-
435 AM CDT TUE MAY 10 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
IOWA...WEST CENTRAL IOWA AND SOUTHWEST MINNESOTA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS WILL DEVELOP ACROSS THE AREA THIS EVENING AND
CONTINUE OVERNIGHT. THESE STORMS ARE NOT EXPECTED TO BE
SEVERE...ALTHOUGH HEAVY RAIN COULD PRODUCE BRIEF FLASH FLOODING
IN AREAS WHICH ARE EXPERIENCING ALREADY SATURATED GROUND FROM
RECENT RAINFALL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.