Alert archive / South Dakota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 21, NWS Aberdeen, SD

May 5, 20124 counties in South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at May 5, 2012, 8:18 PM CDT for 4 counties in South Dakota. It was in force for 57 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
May 5, 2012, 8:18 PM CDT (01:18 UTC)
Expired
May 5, 2012, 9:15 PM CDT
In force
57 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Hail
1.75 in
Wind
70.0 mph

Counties Codington County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD

The radar

The Sioux Falls radar (KFSD), 143 km from the middle of the area, began a volume at 01:20 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

TimeReportWhereRemark
May 5, 8:30 PM CDTHAIL 13 S Goodwin, SDHAD A RANGE OF DIME TO QUARTER-SIZE HAIL

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.

IssuedProductOfficeLasted
May 5, 8:18 PM CDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 1.3 hours before the alert went out and 135 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°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.

323 
WUUS53 KABR 060118
SVRABR
SDC029-039-051-057-060215-
/O.NEW.KABR.SV.W.0021.120506T0118Z-120506T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
818 PM CDT SAT MAY 5 2012

THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CODINGTON COUNTY IN NORTHEAST SOUTH DAKOTA...
  NORTHERN DEUEL COUNTY IN NORTHEAST SOUTH DAKOTA...
  SOUTHEASTERN GRANT COUNTY IN NORTHEAST SOUTH DAKOTA...
  NORTHEASTERN HAMLIN COUNTY IN NORTHEAST SOUTH DAKOTA...

* UNTIL 915 PM CDT

* AT 816 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 6
  MILES SOUTH OF GOODWIN...OR 7 MILES WEST OF CLEAR LAKE...MOVING
  NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GOODWIN AROUND 825 PM CDT...
  ALTAMONT AROUND 835 PM CDT...
  TUNERVILLE AROUND 840 PM CDT...
  STRANDBURG AROUND 900 PM CDT...
  LA BOLT AROUND 905 PM CDT...
  REVILLO AROUND 910 PM CDT...
  ALBEE AROUND 915 PM CDT...

THIS WARNING INCLUDES INTERSTATE 29 BETWEEN MILE MARKERS 162 AND 170.

THIS WARNING INCLUDES HIGHWAY 212 BETWEEN MILE MARKERS 388 AND 411.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS AND 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 4467 9678 4477 9699 4513 9670 4503 9644
      4495 9644
TIME...MOT...LOC 0119Z 214DEG 19KT 4480 9681
WIND...HAIL 70MPH 1.75IN

$$
DORN
1 follow-up statement
768 
WWUS53 KABR 060207
SVSABR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
907 PM CDT SAT MAY 5 2012

SDC029-039-051-057-060217-
/O.EXP.KABR.SV.W.0021.000000T0000Z-120506T0215Z/
HAMLIN SD-GRANT SD-DEUEL SD-CODINGTON SD-
907 PM CDT SAT MAY 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CODINGTON...
NORTHERN DEUEL...SOUTHEASTERN GRANT AND NORTHEASTERN HAMLIN COUNTIES
WILL EXPIRE AT 915 PM CDT/815 PM MDT/...

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

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1 AM CDT.

LAT...LON 4467 9678 4477 9699 4513 9670 4503 9644
      4495 9644
TIME...MOT...LOC 0207Z 214DEG 19KT 4501 9661

$$
DORN

The office that day

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

IssuedProductOfficeCountiesLasted
May 5, 7:48 PM CDTSevere Thunderstorm WarningABRCodington, Deuel, Hamlin57 min
May 5, 7:59 PM CDTSevere Thunderstorm WarningABRClark, Codington, Hamlin61 min
May 5, 8:36 PM CDTSevere Thunderstorm WarningABRCodington, Deuel, Grant, Hamlin, Roberts54 min
May 5, 8:43 PM CDTSevere Thunderstorm WarningABRClark, Codington, Hamlin47 min
May 5, 8:43 PM CDTSevere Thunderstorm WarningABRCodington, Deuel, Hamlin60 min
May 5, 8:56 PM CDTSevere Thunderstorm WarningABRGrant, Roberts41 min
May 5, 9:13 PM CDTSevere Thunderstorm WarningABRCodington, Day, Grant, Marshall, Roberts41 min
May 5, 9:23 PM CDTSevere Thunderstorm WarningABRGrant, Roberts41 min
May 5, 9:29 PM CDTSevere Thunderstorm WarningABRDeuel16 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.