Alert archive / South Dakota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 91, NWS Sioux Falls, SD

July 5, 2016Brookings County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 5, 2016, 5:28 PM CDT for Brookings County, South Dakota. It was in force for 25 min. 1 report 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: Jul 5, 2016, 5:28 PM CDT (22:28 UTC)
Expired: Jul 5, 2016, 5:53 PM CDT
In force: 25 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Possible
Hail: 1.5 in
Wind: 60.0 mph

County Brookings County, SD

The radar

The Sioux Falls radar (KFSD), 84 km from the middle of the area, began a volume at 22:29 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
Jul 5, 5:31 PM CDT	HAIL 1.75	5 N Brookings, 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
Jul 5, 2:06 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.5 hours before the alert went out and 142 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: 308 J/kg
Mixed-layer CIN: -449 J/kg
Mixed-layer LCL: 1721 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: -25 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

052 
WUUS53 KFSD 052228
SVRFSD
SDC011-052315-
/O.NEW.KFSD.SV.W.0091.160705T2228Z-160705T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
528 PM CDT TUE JUL 5 2016

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL BROOKINGS COUNTY IN EAST CENTRAL SOUTH DAKOTA...

* UNTIL 615 PM CDT

* AT 527 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER VOLGA...OR
  NEAR BROOKINGS...MOVING EAST AT 25 MPH.

  HAZARD...PING PONG BALL SIZE HAIL AND 60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL 
           DAMAGE TO ROOFS...SIDING...WINDOWS...AND VEHICLES. EXPECT 
           WIND DAMAGE TO ROOFS...SIDING...AND TREES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  BROOKINGS AROUND 540 PM CDT. 
  AURORA AROUND 555 PM CDT. 
  WHITE AROUND 600 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
BUSHNELL.

THIS EXTENDS THE PREVIOUS WARNING FOR BROOKINGS COUNTY.

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 EAST CENTRAL
SOUTH DAKOTA.

LAT...LON 4431 9699 4444 9694 4446 9651 4420 9652
TIME...MOT...LOC 2227Z 269DEG 21KT 4436 9690 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...60MPH
 
$$

CHAPMAN

1 follow-up statement

161 
WWUS53 KFSD 052253
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
553 PM CDT TUE JUL 5 2016

SDC011-052302-
/O.CAN.KFSD.SV.W.0091.000000T0000Z-160705T2315Z/
BROOKINGS SD-
553 PM CDT TUE JUL 5 2016

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BROOKINGS COUNTY IS
CANCELLED...
                
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 HAS BEEN CANCELLED.  A SEVERE THUNDERSTORM
WARNING REMAINS IN EFFECT FOR NORTHERN BROOKINGS COUNTY UNTIL 615 PM
CDT.

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

LAT...LON 4431 9699 4444 9694 4446 9651 4420 9652
TIME...MOT...LOC 2251Z 269DEG 21KT 4436 9669 

$$

CHAPMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 4:03 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	42 min
Jul 5, 4:32 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury	58 min
Jul 5, 4:35 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld, Sanborn	40 min
Jul 5, 5:46 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury	29 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2016 Every severe thunderstorm warning in 2016

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.