Alert archive / South Dakota / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 430, NWS Sioux Falls, SD

November 12, 2005McCook County, Minnehaha County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Nov 12, 2005, 3:45 PM CST for McCook County, Minnehaha County, South Dakota. It was in force for 45 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: Nov 12, 2005, 3:45 PM CST (21:45 UTC)
Expired: Nov 12, 2005, 4:30 PM CST
In force: 45 min
Issued by: NWS Sioux Falls, SD
Area: Counties, with a storm outline in the text

Counties McCook County, SD, Minnehaha County, SD

The radar

The Sioux Falls radar (KFSD), 28 km from the middle of the area, began a volume at 21:48 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
Nov 12, 3:55 PM CST	HAIL 0.75	3 E Hartford, SD
Nov 12, 4:02 PM CST	HAIL 0.88	6 S Humboldt, 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
Nov 12, 1:44 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 9.8 hours before the alert went out and 172 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: 1926 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 235 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.

000 
WUUS53 KFSD 122148
SVRFSD
SDC087-099-122230-
/O.NEW.KFSD.SV.W.0430.051112T2145Z-051112T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
345 PM CST SAT NOV 12 2005

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN MCCOOK COUNTY IN SOUTHEAST SOUTH DAKOTA
  MINNEHAHA COUNTY IN SOUTHEAST SOUTH DAKOTA

* UNTIL 430 PM CST

* AT 345 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 5 MILES NORTHEAST OF SALEM...TO
  NEAR CANISTOTA...MOVING EAST AT 20 MILES EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MONTROSE AROUND 355 PM CST
  HUMBOLDT AROUND 405 PM CST
  HARTFORD AROUND 425 PM CST
  COLTON...CROOKS...BALTIC AROUND 430 PM CST

IN ADDITION...OTHER CELLS CONTINUE TO DEVELOP IN AND NEAR SIOUX 
FALLS AT THIS TIME...CAPABLE OF PRODUCING NICKEL SIZE HAIL.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CST SATURDAY EVENING. 

LAT...LON 4380 9740 4352 9738 4356 9651 4382 9653

$$

MJF

1 follow-up statement

000 
WWUS53 KFSD 122214
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
411 PM CST SAT NOV 12 2005

SDC087-099-122230-
/O.CON.KFSD.SV.W.0430.000000T0000Z-051112T2230Z/
MINNEHAHA SD-MCCOOK SD-
411 PM CST SAT NOV 12 2005

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CST 
FOR EASTERN MCCOOK AND MINNEHAHA COUNTIES...

AT 411 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL 
SIZE HAIL. THESE STORMS EXTENDED FROM 5 MILES NORTH OF MONTROSE...TO
15 MILES WEST TO SOUTHWEST OF SIOUX FALLS...MOVING EAST AT 20 MPH.
IN ADDITION...OTHER SINGLE CELLS EXISTED NEAR CROOKS JUST NORTHWEST 
OF SIOUX FALLS...AND IN THE GARRETSON AREA. THESE STORMS ARE ALSO 
CAPABLE OF PRODUCING NICKEL TO QUARTER SIZED HAIL AND ARE MOVING 
EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HARTFORD...COLTON AROUND 425 PM CST
  CROOKS AROUND 430 PM CST

NICKEL SIZE HAIL COVERED THE GROUND 6 MILES SOUTH OF HUMBOLDT AT 402 
PM. 

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CST SATURDAY EVENING. 

LAT...LON 4380 9740 4352 9738 4356 9651 4382 9653

$$

MJF

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 12, 4:14 AM CST	Wind Advisory	FSD	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more	31 hr
Nov 12, 2:41 PM CST	Severe Thunderstorm Warning	FSD	Hutchinson	34 min
Nov 12, 2:59 PM CST	Severe Thunderstorm Warning	FSD	Hanson, McCook	46 min
Nov 12, 3:01 PM CST	Severe Thunderstorm Warning	FSD	Lincoln, Union	29 min
Nov 12, 3:15 PM CST	Severe Thunderstorm Warning	FSD	Hutchinson, Turner	45 min
Nov 12, 3:52 PM CST	Severe Thunderstorm Warning	FSD	Lake	38 min
Nov 12, 3:59 PM CST	Severe Thunderstorm Warning	FSD	Turner	31 min
Nov 12, 4:29 PM CST	Severe Thunderstorm Warning	FSD	Minnehaha	46 min
Nov 12, 4:54 PM CST	Severe Thunderstorm Warning	FSD	Brookings, Moody	32 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2005 Every severe thunderstorm warning in 2005

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.