Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 161, NWS Sioux Falls, SD

July 10, 2011Murray County, Pipestone County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 10, 2011, 10:14 PM CDT for Murray County, Pipestone County, Minnesota. It was in force for 22 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: Jul 10, 2011, 10:14 PM CDT (03:14 UTC)
Expired: Jul 10, 2011, 10:36 PM CDT
In force: 22 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 58.0 mph

Counties Murray County, MN, Pipestone County, MN

The radar

The Sioux Falls radar (KFSD), 90 km from the middle of the area, began a volume at 03:17 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
Jul 10, 10:15 PM CDT	TSTM WND GST 60	3 N Woodstock, MN	MODERATE TO SEVERE DAMAGE OF CORN CROP
Jul 10, 10:15 PM CDT	HAIL 1	3 N Woodstock, MN

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
Jul 10, 6:12 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.2 hours before the alert went out and 197 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: 1401 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 1316 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 15 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.

456 
WUUS53 KFSD 110314
SVRFSD
MNC101-117-110400-
/O.NEW.KFSD.SV.W.0161.110711T0314Z-110711T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1014 PM CDT SUN JUL 10 2011

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

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

* UNTIL 1100 PM CDT

* AT 1015 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
  HAIL.  THIS STORM WAS LOCATED NEAR WOODSTOCK...OR 9 MILES EAST OF
  PIPESTONE...AND MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LAKE WILSON AROUND 1025 PM CDT...
  CURRENT LAKE AROUND 1030 PM CDT...
  LAKE SHETEK STATE PARK AND CURRIE AROUND 1050 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 4401 9558 4397 9620 4411 9623 4420 9582
      4420 9563
TIME...MOT...LOC 0315Z 258DEG 31KT 4405 9611
WIND...HAIL <58MPH 1.00IN

$$

MJF

1 follow-up statement

921 
WWUS53 KFSD 110336
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1036 PM CDT SUN JUL 10 2011

MNC101-117-110346-
/O.CAN.KFSD.SV.W.0161.000000T0000Z-110711T0400Z/
MURRAY MN-PIPESTONE MN-
1036 PM CDT SUN JUL 10 2011

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PIPESTONE AND
NORTHERN MURRAY COUNTIES 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 POCKETS OF HEAVY RAIN IN THIS HUMID ATMOSPHERE ARE 
STILL POSSIBLE WITH STORMS AS THEY MOVE ACROSS THE AREA. 

LAT...LON 4401 9558 4397 9620 4411 9623 4420 9582
      4420 9563
TIME...MOT...LOC 0336Z 258DEG 31KT 4409 9586

$$

MJF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 8:17 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Lyon	43 min
Jul 10, 9:41 PM CDT	Severe Thunderstorm Warning	FSD	Murray, Pipestone	34 min
Jul 10, 11:23 PM CDT	Severe Thunderstorm Warning	FSD	Pipestone, Rock	37 min
Jul 10, 11:50 PM CDT	Severe Thunderstorm Warning	FSD	Murray, Nobles, Pipestone, Rock	40 min
Jul 11, 12:24 AM CDT	Severe Thunderstorm Warning	FSD	Cottonwood, Jackson, Murray, Nobles	36 min
Jul 11, 1:19 AM CDT	Flash Flood Warning	FSD	Jackson, Nobles	4 hr
Jul 11, 2:57 AM CDT	Severe Thunderstorm Warning	FSD	Jackson	33 min
Jul 11, 6:59 AM CDT	River Flood Warning	FSD	Pipestone	4 hr
Jul 11, 6:59 AM CDT	River Flood Warning	FSD	Jackson	16 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2011 Every severe thunderstorm warning in 2011

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.