Alert archive / South Dakota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 92, NWS Sioux Falls, SD

May 30, 2011Beadle County, Jerauld County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at May 30, 2011, 1:46 AM CDT for Beadle County, Jerauld County, South Dakota. It was in force for 44 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 30, 2011, 1:46 AM CDT (06:46 UTC)
Expired: May 30, 2011, 2:30 AM CDT
In force: 44 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 1.25 in
Wind: 58.0 mph

Counties Beadle County, SD, Jerauld County, SD

The radar

The Aberdeen radar (KABR), 136 km from the middle of the area, began a volume at 06:48 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.

What was reported inside it

Time	Report	Where	Remark
May 30, 2:22 AM CDT	HAIL 0.75	Wolsey, SD
May 30, 2:23 AM CDT	HAIL 1.25	N Wolsey, SD

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 29, 10:58 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 6.8 hours before the alert went out and 75 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1349 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 561 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

933 
WUUS53 KFSD 300646
SVRFSD
SDC005-073-300730-
/O.NEW.KFSD.SV.W.0092.110530T0646Z-110530T0730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
146 AM CDT MON MAY 30 2011

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN BEADLE COUNTY IN EAST CENTRAL SOUTH DAKOTA...
  CENTRAL JERAULD COUNTY IN CENTRAL SOUTH DAKOTA...

* UNTIL 230 AM CDT

* AT 147 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR
  SIZE HAIL.  THIS STORM WAS LOCATED 6 MILES WEST OF WESSINGTON
  SPRINGS...OR 27 MILES NORTHEAST OF KIMBALL...AND MOVING NORTHEAST
  AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  VIRGIL AROUND 210 AM CDT...
  WOLSEY AROUND 220 AM CDT...
  HURON AROUND 225 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4435 9818 4398 9865 4409 9885 4421 9872
      4421 9871 4422 9871 4449 9843
TIME...MOT...LOC 0647Z 219DEG 36KT 4412 9865
WIND...HAIL <58MPH 1.25IN

$$

BT

4 follow-up statements

987 
WWUS53 KFSD 300656
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
156 AM CDT MON MAY 30 2011

SDC005-073-300730-
/O.CON.KFSD.SV.W.0092.000000T0000Z-110530T0730Z/
JERAULD SD-BEADLE SD-
156 AM CDT MON MAY 30 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
BEADLE AND CENTRAL JERAULD COUNTIES UNTIL 230 AM CDT...

AT 156 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL.  THIS
STORM WAS LOCATED 6 MILES NORTH OF WESSINGTON SPRINGS...OR 24 MILES
SOUTHWEST OF HURON...MOVING NORTHEAST AT 40 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  VIRGIL AROUND 210 AM CDT...
  WOLSEY AROUND 220 AM CDT...
  HURON AROUND 225 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4435 9818 4398 9865 4409 9885 4421 9872
      4421 9871 4422 9871 4449 9843
TIME...MOT...LOC 0656Z 219DEG 36KT 4419 9857
WIND...HAIL <58MPH 1.75IN

$$

BT

339 
WWUS53 KFSD 300704
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
204 AM CDT MON MAY 30 2011

SDC073-300714-
/O.CAN.KFSD.SV.W.0092.000000T0000Z-110530T0730Z/
JERAULD SD-
204 AM CDT MON MAY 30 2011

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL JERAULD COUNTY IS
CANCELLED...

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

LAT...LON 4435 9818 4419 9838 4419 9857 4420 9871
      4422 9871 4449 9843
TIME...MOT...LOC 0704Z 209DEG 37KT 4428 9854

$$

SDC005-300730-
/O.CON.KFSD.SV.W.0092.000000T0000Z-110530T0730Z/
BEADLE SD-
204 AM CDT MON MAY 30 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
BEADLE COUNTY UNTIL 230 AM CDT...

AT 204 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL.  THIS
STORM WAS LOCATED 7 MILES SOUTHWEST OF VIRGIL...OR 19 MILES SOUTHWEST
OF HURON...MOVING NORTHEAST AT 40 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  VIRGIL AROUND 210 AM CDT...
  WOLSEY AND HURON AROUND 220 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR LARGE DESTRUCTIVE HAIL CAPABLE OF PRODUCING
SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 4435 9818 4419 9838 4419 9857 4420 9871
      4422 9871 4449 9843
TIME...MOT...LOC 0704Z 209DEG 37KT 4428 9854
WIND...HAIL <58MPH 1.75IN

$$

BT

522 
WWUS53 KFSD 300711
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
211 AM CDT MON MAY 30 2011

SDC005-300730-
/O.CON.KFSD.SV.W.0092.000000T0000Z-110530T0730Z/
BEADLE SD-
211 AM CDT MON MAY 30 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
BEADLE COUNTY UNTIL 230 AM CDT...

AT 211 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING WALNUT SIZE HAIL.  THIS
STORM WAS LOCATED NEAR VIRGIL...OR 16 MILES WEST OF HURON...MOVING
NORTHEAST AT 45 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  WOLSEY AND HURON AROUND 220 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4435 9818 4419 9838 4419 9857 4420 9871
      4422 9871 4449 9843
TIME...MOT...LOC 0711Z 209DEG 37KT 4434 9849
WIND...HAIL <58MPH 1.50IN

$$

BT

420 
WWUS53 KFSD 300731
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
231 AM CDT MON MAY 30 2011

SDC005-300741-
/O.EXP.KFSD.SV.W.0092.000000T0000Z-110530T0730Z/
BEADLE SD-
231 AM CDT MON MAY 30 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN BEADLE COUNTY HAS
EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY...HOWEVER SMALL HAIL IS STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 4435 9818 4419 9838 4419 9857 4420 9871
      4422 9871 4449 9843
TIME...MOT...LOC 0711Z 209DEG 37KT 4434 9849

$$


BT

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 29, 11:03 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix	42 min
May 29, 11:30 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, Turner	45 min
May 29, 11:39 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix, Douglas, Gregory, Hutchinson, Turner and 1 more	36 min
May 30, 12:14 AM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix, Douglas, Hutchinson, Turner, Yankton	31 min
May 30, 12:53 AM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	37 min
May 30, 2:39 AM CDT	Severe Thunderstorm Warning	FSD	Beadle	36 min
May 30, 3:36 AM CDT	Severe Thunderstorm Warning	FSD	Brookings	39 min
May 30, 9:28 AM CDT	River Flood Warning	FSD	Minnehaha	71 hr
May 30, 5:08 PM CDT	Severe Thunderstorm Warning	FSD	Gregory	37 min
May 30, 5:37 PM CDT	Severe Thunderstorm Warning	FSD	Jerauld	23 min
May 30, 5:48 PM CDT	Tornado Warning	FSD	Bon Homme, Charles Mix	42 min
May 30, 6:26 PM CDT	Tornado Warning	FSD	Bon Homme, Charles Mix, Douglas, Hutchinson	34 min
May 30, 6:33 PM CDT	Tornado Warning	FSD	Beadle	27 min
May 30, 6:38 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	52 min
May 30, 6:51 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	39 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2011 Every severe thunderstorm warning in 2011

Sources

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