Alert archive / South Dakota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 87, NWS Sioux Falls, SD

May 5, 2012Kingsbury County, Miner County, Sanborn County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at May 5, 2012, 9:26 PM CDT for Kingsbury County, Miner County, Sanborn County, South Dakota. It was in force for 23 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 5, 2012, 9:26 PM CDT (02:26 UTC)
Expired
May 5, 2012, 9:49 PM CDT
In force
23 min
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Kingsbury County, SD, Miner County, SD, Sanborn County, SD

The radar

The Sioux Falls radar (KFSD), 102 km from the middle of the area, began a volume at 02:29 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.

The watch it was issued in

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

IssuedProductOfficeLasted
May 5, 6:46 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 2.4 hours before the alert went out and 97 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-pSkew-T log-p diagram, Aberdeen, SD at 00:00Z on 2012-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 2012-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
657 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
201 m²/s²
0-3 km storm-relative helicity
278 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

549 
WUUS53 KFSD 060226
SVRFSD
SDC077-097-111-060300-
/O.NEW.KFSD.SV.W.0087.120506T0226Z-120506T0300Z/

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

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN KINGSBURY COUNTY IN EAST CENTRAL SOUTH DAKOTA...
  NORTHERN MINER COUNTY IN EAST CENTRAL SOUTH DAKOTA...
  NORTHEASTERN SANBORN COUNTY IN EAST CENTRAL SOUTH DAKOTA...

* UNTIL 1000 PM CDT

* AT 926 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
  LOCATED 6 MILES NORTH OF FEDORA...OR 28 MILES NORTHEAST OF
  MITCHELL...AND MOVING NORTHEAST AT 30 MPH. A SECOND STRONG
  THUNDERSTORMWAS DEVELOPING 5 MILES NORTHEAST OF FORESTBURG...
  ALSO MOVING NORTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CARTHAGE AROUND 935 PM 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 4420 9737 4411 9737 4398 9785 4406 9811
      4420 9793 4420 9785 4426 9785 4444 9761
TIME...MOT...LOC 0226Z 230DEG 24KT 4411 9777
WIND...HAIL 60MPH 1.00IN

$$

JH
1 follow-up statement
965 
WWUS53 KFSD 060249
SVSFSD

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

SDC077-097-111-060258-
/O.CAN.KFSD.SV.W.0087.000000T0000Z-120506T0300Z/
SANBORN SD-MINER SD-KINGSBURY SD-
949 PM CDT SAT MAY 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN KINGSBURY...
NORTHERN MINER AND NORTHEASTERN SANBORN COUNTIES IS CANCELLED...

THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR 
PROPERTY...HOWEVER HEAVY RAIN AND SMALL HAIL ARE STILL POSSIBLE
WITH THIS THUNDERSTORM.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT.

LAT...LON 4420 9737 4411 9737 4398 9785 4406 9811
      4420 9793 4420 9785 4426 9785 4444 9761
TIME...MOT...LOC 0248Z 230DEG 24KT 4420 9761

$$

JH

The office that day

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

IssuedProductOfficeCountiesLasted
May 5, 7:05 PM CDTSevere Thunderstorm WarningFSDDavison, Hanson, McCook, Miner25 min
May 5, 7:29 PM CDTSevere Thunderstorm WarningFSDDavison, Hanson, Lake, McCook, Miner, Sanborn46 min
May 5, 7:30 PM CDTSevere Thunderstorm WarningFSDBrookings, Kingsbury, Miner, Sanborn45 min
May 5, 7:37 PM CDTFlash Flood WarningFSDDavison, Hanson, Miner, Sanborn7 hr
May 5, 7:41 PM CDTSevere Thunderstorm WarningFSDBeadle, Kingsbury36 min
May 5, 7:59 PM CDTSevere Thunderstorm WarningFSDCharles Mix, Gregory46 min
May 5, 8:11 PM CDTSevere Thunderstorm WarningFSDDavison, Hanson, Lake, McCook, Miner, Minnehaha and 1 more49 min
May 5, 8:16 PM CDTSevere Thunderstorm WarningFSDBrookings, Kingsbury29 min
May 5, 8:42 PM CDTSevere Thunderstorm WarningFSDBrookings, Kingsbury48 min
May 5, 8:46 PM CDTSevere Thunderstorm WarningFSDAurora, Brule, Charles Mix44 min
May 5, 8:57 PM CDTSevere Thunderstorm WarningFSDBrookings, Hanson, Lake, McCook, Miner, Minnehaha and 1 more48 min
May 5, 9:05 PM CDTSevere Thunderstorm WarningFSDBeadle, Kingsbury, Miner, Sanborn25 min
May 5, 9:07 PM CDTFlash Flood WarningFSDLake, Miner7 hr
May 5, 9:27 PM CDTSevere Thunderstorm WarningFSDAurora, Brule28 min
May 5, 9:29 PM CDTSevere Thunderstorm WarningFSDBrookings46 min
May 5, 9:42 PM CDTSevere Thunderstorm WarningFSDLake, McCook, Minnehaha, Moody48 min
May 5, 10:02 PM CDTSevere Thunderstorm WarningFSDKingsbury, Miner, Sanborn28 min
May 5, 10:07 PM CDTSevere Thunderstorm WarningFSDBrookings38 min
May 5, 10:15 PM CDTFlash Flood WarningFSDMoody4 hr
May 5, 10:28 PM CDTSevere Thunderstorm WarningFSDLake, Minnehaha, Moody62 min
May 5, 10:31 PM CDTSevere Thunderstorm WarningFSDBrookings, Lake, Miner29 min
May 5, 10:57 PM CDTSevere Thunderstorm WarningFSDBrookings, Lake33 min
May 5, 11:08 PM CDTSevere Thunderstorm WarningFSDHanson, Lake, McCook, Miner37 min
May 5, 11:25 PM CDTSevere Thunderstorm WarningFSDBrookings, Lake, Moody65 min
May 5, 11:45 PM CDTSevere Thunderstorm WarningFSDLake, McCook, Miner, Minnehaha45 min
May 6, 12:22 AM CDTSevere Thunderstorm WarningFSDLake, McCook, Minnehaha, Moody38 min
May 6, 1:08 AM CDTAreal Flood WarningFSDBrookings, Hanson, Kingsbury, Lake, McCook, Miner and 2 more33 hr
May 6, 4:08 AM CDTRiver Flood WarningFSDMoody23 hr
May 6, 4:45 AM CDTRiver Flood WarningFSDBrookings, Moody29 hr
May 6, 4:45 AM CDTRiver Flood WarningFSDMinnehaha, Moody3 days
May 6, 4:45 AM CDTRiver Flood WarningFSDMinnehaha4 days
May 6, 4:45 AM CDTRiver Flood WarningFSDLincoln, Minnehaha4 days
May 6, 4:45 AM CDTRiver Flood WarningFSDLincoln, Union7 days
May 6, 4:45 AM CDTRiver Flood WarningFSDUnion7 days
May 6, 8:24 AM CDTRiver Flood WarningFSDMcCook4 days
May 6, 10:31 AM CDTRiver Flood WarningFSDDavison, Hanson7 days
May 6, 10:31 AM CDTRiver Flood WarningFSDHutchinson, Yankton5 days
May 6, 10:31 AM CDTRiver Flood WarningFSDYankton44 hr
May 6, 10:31 AM CDTRiver Flood WarningFSDTurner71 hr
May 6, 10:31 AM CDTRiver Flood WarningFSDTurner5 days
May 6, 10:31 AM CDTRiver Flood WarningFSDClay7 days
May 6, 6:58 PM CDTRiver Flood WarningFSDMinnehaha3 days

Nearby

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

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.