Alert archive / Minnesota / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 252, NWS Sioux Falls, SD

May 29, 2004Pipestone County, Rock County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at May 29, 2004, 8:19 PM CDT for Pipestone County, Rock County, Minnesota. It was in force for 41 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: May 29, 2004, 8:19 PM CDT (01:19 UTC)
Expired: May 29, 2004, 9:00 PM CDT
In force: 41 min
Issued by: NWS Sioux Falls, SD
Area: Counties, with a storm outline in the text

Counties Pipestone County, MN, Rock County, MN

The radar

The Sioux Falls radar (KFSD), 47 km from the middle of the area, began a volume at 01:22 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
May 29, 8:33 PM CDT	HAIL 0.88	Hardwick, MN	HEAVY RAIN, GUSTS TO 30 MPH, QND NICKEL SIZED HAIL IN HARDWICK.
May 29, 8:33 PM CDT	HAIL 0.88	Hardwick, MN	HEAVY RAIN, GUSTS TO 30 MPH, QND NICKEL SIZED HAIL IN HARDWICK.

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
May 29, 2:05 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 1.3 hours before the alert went out and 212 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: 2181 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 1118 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 221 m²/s²
0-3 km storm-relative helicity: 259 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 12.3

Open this sounding in Storm Lab

The text

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

494 
WUUS53 KFSD 300119
SVRFSD
MNC117-133-300200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
819 PM CDT SAT MAY 29 2004

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PIPESTONE COUNTY IN SOUTHWEST MINNESOTA
  ROCK COUNTY IN SOUTHWEST MINNESOTA

* UNTIL 900 PM CDT

* AT 817 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL AND 
  WINDS TO 60 MPH. THIS STORM WAS LOCATED NORTH OF LUVERNE...MOVING 
  NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HARDWICK AROUND 830 PM CDT
  TROSKY AROUND 835 PM CDT
  EDGERTON AROUND 845 PM CDT

A TORNADO WATCH IS ALSO IN EFFECT FOR THE AREA. 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.

THIS STORM WILL PRODUCE LARGE HAIL AND DAMAGING WIND. GO INSIDE A
STURDY BUILDING AND STAY AWAY FROM WINDOWS.

LAT...LON 4372 9636 4365 9607 4394 9607 4395 9624

$$

CHAPMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 8:09 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Murray	36 min
May 29, 9:19 PM CDT	Severe Thunderstorm Warning	FSD	Murray	26 min
May 29, 9:35 PM CDT	Flash Flood Warning	FSD	Lyon, Murray, Nobles, Pipestone, Rock	6 hr
May 29, 9:51 PM CDT	Severe Thunderstorm Warning	FSD	Rock	24 min
May 29, 10:10 PM CDT	Severe Thunderstorm Warning	FSD	Nobles	35 min
May 29, 10:16 PM CDT	Severe Thunderstorm Warning	FSD	Rock	29 min
May 29, 10:27 PM CDT	Severe Thunderstorm Warning	FSD	Murray, Pipestone	48 min
May 29, 10:54 PM CDT	Severe Thunderstorm Warning	FSD	Cottonwood	36 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2004 Every severe thunderstorm warning in 2004

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.