Alert archive / South Dakota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 21, NWS Sioux Falls, SD

May 10, 2015Hutchinson County, McCook County, Turner County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at May 10, 2015, 1:57 PM CDT for Hutchinson County, McCook County, Turner County, South Dakota. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 10, 2015, 1:57 PM CDT (18:57 UTC)
Expired: May 10, 2015, 2:30 PM CDT
In force: 33 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Hutchinson County, SD, McCook County, SD, Turner County, SD

The radar

The Sioux Falls radar (KFSD), 61 km from the middle of the area, began a volume at 18:59 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.

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 10, 10:46 AM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 7.0 hours before the alert went out and 192 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: 483 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 389 m²/s²
0-3 km storm-relative helicity: 692 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.

810 
WUUS53 KFSD 101857
SVRFSD
SDC067-087-125-101930-
/O.NEW.KFSD.SV.W.0021.150510T1857Z-150510T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
157 PM CDT SUN MAY 10 2015

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN TURNER COUNTY IN SOUTHEASTERN SOUTH DAKOTA...
  EASTERN HUTCHINSON COUNTY IN SOUTHEASTERN SOUTH DAKOTA...
  SOUTHERN MCCOOK COUNTY IN SOUTHEASTERN SOUTH DAKOTA...

* UNTIL 230 PM CDT

* AT 157 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES SOUTH OF
  FREEMAN...OR 17 MILES SOUTHWEST OF PARKER...MOVING NORTH AT 40 MPH.

  HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

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

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  FREEMAN AROUND 210 PM CDT.
  MARION AROUND 215 PM CDT.
  DOLTON AROUND 220 PM CDT.
  MONROE AROUND 225 PM CDT.
  LAKE VERMILLION STATE RECREATION AREA AND CANISTOTA AROUND 230 PM
  CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FOR SOUTHEASTERN
SOUTH DAKOTA.

LAT...LON 4319 9755 4365 9750 4361 9713 4317 9730
      4317 9737
TIME...MOT...LOC 1857Z 190DEG 35KT 4325 9741 

HAIL...1.25IN
WIND...60MPH
 
$$

BT

2 follow-up statements

630 
WWUS53 KFSD 101907
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
207 PM CDT SUN MAY 10 2015

SDC067-087-125-101930-
/O.CON.KFSD.SV.W.0021.000000T0000Z-150510T1930Z/
TURNER SD-HUTCHINSON SD-MCCOOK SD-
207 PM CDT SUN MAY 10 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM CDT
FOR NORTHWESTERN TURNER...EASTERN HUTCHINSON AND SOUTHERN MCCOOK
COUNTIES...

AT 207 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER FREEMAN...OR
12 MILES WEST OF PARKER...MOVING NORTH AT 40 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...
  MARION AROUND 215 PM CDT.
  DOLTON AROUND 220 PM CDT.
  MONROE AROUND 225 PM CDT.
  LAKE VERMILLION STATE RECREATION AREA AND CANISTOTA AROUND 230 PM
CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FOR SOUTHEASTERN
SOUTH DAKOTA.

LAT...LON 4319 9755 4365 9750 4361 9713 4317 9730
      4317 9737
TIME...MOT...LOC 1907Z 190DEG 35KT 4335 9739 

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

BT

880 
WWUS53 KFSD 101925
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
225 PM CDT SUN MAY 10 2015

SDC067-087-125-101935-
/O.EXP.KFSD.SV.W.0021.000000T0000Z-150510T1930Z/
TURNER SD-HUTCHINSON SD-MCCOOK SD-
225 PM CDT SUN MAY 10 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN TURNER...EASTERN
HUTCHINSON AND SOUTHERN MCCOOK COUNTIES WILL EXPIRE AT 230 PM CDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FOR SOUTHEASTERN
SOUTH DAKOTA.

LAT...LON 4319 9755 4365 9750 4361 9713 4317 9730
      4317 9737
TIME...MOT...LOC 1924Z 190DEG 35KT 4335 9739 

$$

BT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 9:54 AM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas	36 min
May 10, 10:16 AM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas, Hutchinson	29 min
May 10, 10:29 AM CDT	Tornado Warning Tornado observed	FSD	Charles Mix, Douglas, Hutchinson	31 min
May 10, 10:55 AM CDT	Tornado Warning Tornado observed	FSD	Davison, Douglas, Hutchinson	35 min
May 10, 11:23 AM CDT	Tornado Warning	FSD	Davison, Hanson, Hutchinson	37 min
May 10, 11:55 AM CDT	Tornado Warning	FSD	Davison, Hanson, Sanborn	35 min
May 10, 12:27 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	33 min
May 10, 12:28 PM CDT	Tornado Warning	FSD	Davison, Hanson, Miner, Sanborn	32 min
May 10, 1:40 PM CDT	Severe Thunderstorm Warning	FSD	Union	35 min
May 10, 2:02 PM CDT	Severe Thunderstorm Warning	FSD	Union	28 min
May 10, 2:51 PM CDT	Tornado Warning	FSD	Lincoln, Union	24 min
May 10, 3:15 PM CDT	Severe Thunderstorm Warning	FSD	Union	30 min
May 10, 3:27 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	33 min
May 10, 4:34 PM CDT	Flash Flood Warning	FSD	Lincoln	4 hr
May 10, 4:56 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Sanborn	34 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2015 Every severe thunderstorm warning in 2015

Sources

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.