Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 162, NWS Sioux Falls, SD

June 29, 2012Pipestone County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 29, 2012, 5:03 PM CDT for Pipestone County, Minnesota. It was in force for 17 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: Jun 29, 2012, 5:03 PM CDT (22:03 UTC)
Expired: Jun 29, 2012, 5:20 PM CDT
In force: 17 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Pipestone County, MN

The radar

The Sioux Falls radar (KFSD), 67 km from the middle of the area, began a volume at 22:07 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 nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.1 hours before the alert went out and 196 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: 444 J/kg
Mixed-layer CIN: -507 J/kg
Mixed-layer LCL: 1747 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 116 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.

617 
WUUS53 KFSD 292203
SVRFSD
MNC117-292245-
/O.NEW.KFSD.SV.W.0162.120629T2203Z-120629T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
503 PM CDT FRI JUN 29 2012

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

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

* UNTIL 545 PM CDT

* AT 503 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING WALNUT SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
  LOCATED NEAR PIPESTONE NATIONAL MONUMENT...OR 6 MILES NORTHWEST OF
  PIPESTONE...AND MOVING EAST AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  PIPESTONE NATIONAL MONUMENT AND PIPESTONE AROUND 520 PM CDT...
  HOLLAND AND WOODSTOCK AROUND 545 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 4415 9607 4393 9607 4397 9645 4413 9645
TIME...MOT...LOC 2203Z 271DEG 9KT 4406 9637
WIND...HAIL 60MPH 1.50IN

$$

HANKO

1 follow-up statement

659 
WWUS53 KFSD 292220
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
520 PM CDT FRI JUN 29 2012

MNC117-292230-
/O.CAN.KFSD.SV.W.0162.000000T0000Z-120629T2245Z/
PIPESTONE MN-
520 PM CDT FRI JUN 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PIPESTONE COUNTY IS
CANCELLED...

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

LAT...LON 4415 9607 4393 9607 4397 9645 4413 9645
TIME...MOT...LOC 2220Z 271DEG 9KT 4406 9631

$$

HANKO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 5:37 PM CDT	Severe Thunderstorm Warning	FSD	Pipestone	23 min
Jun 29, 5:55 PM CDT	Severe Thunderstorm Warning	FSD	Pipestone	35 min
Jun 29, 6:46 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Pipestone	44 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2012 Every 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.