Severe Thunderstorm Warning 198, NWS Sioux Falls, SD

AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1145 AM CDT WED JUN 13 2001

BEEN A BUSY MORNING DEALING WITH THE TAIL END OF STORMS LAST NIGHT
AND GEARING UP FOR NEW DEVELOPMENT LATER TODAY. SPC JUST UPDATED
THEIR DAY 1 OUTLOOK TO INCREASE THE RISK OF SVR WX TO MODERATE FOR
MUCH OF THE FSD CWA WHICH GOES PRETTY GOOD WITH THE MORNING SIG WX
OUTLOOK WE JUST ISSUED. WILL BE UPDATING ZONES TOWARD NOON AND 1 PM.
AS WE ARE GEARING UP FOR ANOTHER SVR WX OUTBREAK THIS AFTN...HEAVY
RAIN AND FLOOD POTENTIAL WILL ALSO BE A CONCERN.

DOES NOT LOOK LIKE WE WILL BE IN THE CLEAR FM SVR WX TIL
LATE...HOLDING OFF UNTIL A 500 MB TROF MOVES THROUGH THE AREA. ONE
CONCERN THOUGH IS THAT THE WIND SHEAR MAY BE TOO STRONG FOR THU THAT
TSTMS MAY HAVE A HARD TIME DEVLEOPING IN OUR CWA.

.FSD...NONE

BR

SIGNIFICANT WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1128 AM CDT WED JUN 13 2001

*** THIS SIGNIFICANT WEATHER OUTLOOK FROM THE NATIONAL WEATHER SERVICE
PERTAINS ONLY TO CONDITIONS ASSOCIATED WITH THUNDERSTORMS. ***

.SYNOPSIS...
THE ATMOSPHERE WILL SPEND THE AFTERNOON RECOVERING FROM THE STORMS
LAST NIGHT. WITH WARM MOIST AIR RETURNING TO THE AREA THIS AFTERNOON
ALONG WITH AFTERNOON HEATING...THE RISK FOR SEVERE WEATHER REMAINS
FOR LATE THIS AFTERNOON AND OVERNIGHT. ANY SURFACE BOUNDARIES THAT
SET UP THROUGH THE DAY WILL HELP TRIGGER THUNDERSTORM DEVELOPMENT.

AT THIS TIME A SURFACE TROUGH AND NEARLY STATIONARY FRONT IS EXPECTED
TO DEVELOP IN SOUTH CENTRAL SOUTH DAKOTA. THUNDERSTORMS SHOULD
DEVELOP ALONG THE SURFACE TROUGH AND THEN MOVE EAST OVERNIGHT. THE
THUNDERSTORMS WILL BE CAPABLE OF PRODUCING LARGE HAIL...STRONG
WINDS...AND VERY HEAVY RAIN. THE THREAT FROM TORNADOS ALSO
REMAINS...ESPECIALLY IN NORTHWEST IOWA AND ALONG THE MISSOURI RIVER
IN SOUTHEAST SOUTH DAKOTA.

SDZ065>071-IAZ001>003-012>014-020>022-031-032-NEZ013-014-140000-
HUTCHINSON-TURNER-LINCOLN-LYON-OSCEOLA-DICKINSON-BON HOMME-YANKTON-
CLAY-UNION-SIOUX-OBRIEN-CLAY-PLYMOUTH-CHEROKEE-BUENA VISTA-DIXON-
DAKOTA-WOODBURY-IDA-
INCLUDING THE CITIES OF...ROCK RAPIDS...SPIRIT LAKE...YANKTON...SIOUX CENTER...
SPENCER...LE MARS...STORM LAKE...SIOUX CITY...
1128 AM CDT WED JUN 13 2001

* FORECAST THROUGH MIDNIGHT:
  SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP IN THE
  AFTERNOON AND CONTINUE INTO THE EVENING HOURS. THE STORMS ARE
  EXPECTED TO FIRST DEVELOP IN SOUTHEAST SOUTH DAKOTA AND EXTREME
  NORTHEAST NEBRASKA DURING THE AFTERNOON...BEFORE MOVING INTO
  NORTHWEST IOWA TOWARD EVENING.

* SIGNIFICANT WEATHER:
  SEVERE WINDS...GUSTS EQUAL TO OR GREATER THAN 58 MPH.
  LARGE HAIL...DIME SIZE OR LARGER.
  TORNADOES POSSIBLE.

* SPOTTER ACTIVATION:
  SPOTTER ACTIVATION IS POSSIBLE AFTER 3 PM.

MNZ071-072-080-081-089-090-140000-
LINCOLN-LYON-MURRAY-COTTONWOOD-NOBLES-JACKSON-
INCLUDING THE CITIES OF...SLAYTON...WORTHINGTON...
1128 AM CDT WED JUN 13 2001

* FORECAST THROUGH MIDNIGHT:
  SHOWERS WILL SOON END BY EARLY AFTERNOON IN SOUTHWEST MINNESOTA.
  DURING THE EVENING HOURS SHOWERS AND THUNDERSTORMS FROM SOUTH DAKOTA
  AND IOWA ARE EXPECTED TO MOVE INTO THE AREA.

* SIGNIFICANT WEATHER:
  SEVERE WINDS...GUSTS EQUAL TO OR GREATER THAN 58 MPH.
  LARGE HAIL...DIME SIZE OR LARGER.

* SPOTTER ACTIVATION:
  SPOTTER ACTIVATION IS POSSIBLE AFTER 6 PM.

SDZ038>040-050-052>064-MNZ097-098-140000-
BEADLE-KINGSBURY-BROOKINGS-JERAULD-SANBORN-MINER-LAKE-MOODY-PIPESTONE-
BRULE-AURORA-DAVISON-HANSON-MCCOOK-MINNEHAHA-ROCK-GREGORY-CHARLES MIX-
DOUGLAS-
INCLUDING THE CITIES OF...HURON...BROOKINGS...PIPESTONE...CHAMBERLAIN...
MITCHELL...SIOUX FALLS...LUVERNE...
1128 AM CDT WED JUN 13 2001

* FORECAST THROUGH MIDNIGHT:
  SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP IN SOUTH
  CENTRAL AND SOUTHEAST SOUTH DAKOTA THIS AFTERNOON. THE STORMS WILL
  BECOME MORE WIDESPREAD IN THE LATE AFTERNOON AND EVENING.

* SIGNIFICANT WEATHER:
  SEVERE WINDS...GUSTS EQUAL TO OR GREATER THAN 58 MPH.
  LARGE HAIL...DIME SIZE OR LARGER.

* SPOTTER ACTIVATION:
  SPOTTER ACTIVATION IS POSSIBLE AFTER 4 PM .