Severe Thunderstorm Warning 84, NWS Sioux Falls, SD

Issued

May 5, 2012, 8:46 PM CDT (01:46 UTC)

Expired

May 5, 2012, 9:30 PM CDT

In force

44 min

Issued by

NWS Sioux Falls, SD

Area

Storm-based polygon

Hail

1.25 in

Wind

58.0 mph

Counties Aurora County, SD, Brule County, SD, Charles Mix County, SD

The Sioux Falls radar (KFSD), 165 km from the middle of the area, began a volume at 01:47 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

206 
WUUS53 KFSD 060146
SVRFSD
SDC003-015-023-060230-
/O.NEW.KFSD.SV.W.0084.120506T0146Z-120506T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
846 PM CDT SAT MAY 5 2012

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN AURORA COUNTY IN SOUTH CENTRAL SOUTH DAKOTA...
  SOUTHEASTERN BRULE COUNTY IN SOUTH CENTRAL SOUTH DAKOTA...
  NORTHERN CHARLES MIX COUNTY IN SOUTH CENTRAL SOUTH DAKOTA...

* UNTIL 930 PM CDT

* AT 845 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR
  SIZE HAIL.  THIS STORM WAS LOCATED 7 MILES WEST OF PLATTE...OR 24
  MILES SOUTH OF KIMBALL...AND MOVING NORTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF
  NORTHWESTERN CHARLES MIX...SOUTHEASTERN BRULE AND SOUTHWESTERN
  AURORA COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT SATURDAY EVENING
FOR NORTHWESTERN IOWA AND NORTHEAST NEBRASKA AND SOUTHEAST SOUTH
DAKOTA.

LAT...LON 4372 9882 4354 9848 4350 9859 4350 9870
      4345 9871 4334 9898 4339 9908
TIME...MOT...LOC 0145Z 226DEG 27KT 4341 9897
WIND...HAIL <58MPH 1.25IN

$$
CHAPMAN

830 
WWUS53 KFSD 060212
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
912 PM CDT SAT MAY 5 2012

SDC023-060222-
/O.CAN.KFSD.SV.W.0084.000000T0000Z-120506T0230Z/
CHARLES MIX SD-
912 PM CDT SAT MAY 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CHARLES MIX
COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4372 9882 4354 9848 4350 9859 4350 9887
      4350 9899
TIME...MOT...LOC 0212Z 215DEG 22KT 4354 9884

$$

SDC003-015-060230-
/O.CON.KFSD.SV.W.0084.000000T0000Z-120506T0230Z/
BRULE SD-AURORA SD-
912 PM CDT SAT MAY 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
AURORA AND SOUTHEASTERN BRULE COUNTIES UNTIL 930 PM CDT...

AT 912 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 8 MILES SOUTH OF GRASS RANCH COLONY...OR 16 MILES
SOUTH OF KIMBALL...MOVING NORTHEAST AT 25 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 4372 9882 4354 9848 4350 9859 4350 9887
      4350 9899
TIME...MOT...LOC 0212Z 215DEG 22KT 4354 9884
WIND...HAIL <58MPH 1.00IN

$$

CHAPMAN

Severe Thunderstorm Warnings in South Dakota, 2012Every severe thunderstorm warning in 2012

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.