Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 66, NWS Twin Cities, MN

May 30, 2011Goodhue County, Rice County, Steele County, Minnesota; Pepin County, Pierce County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 30, 2011, 1:25 PM CDT for Goodhue County, Rice County, Steele County, Minnesota; Pepin County, Pierce County, Wisconsin. It was in force for 35 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
May 30, 2011, 1:25 PM CDT (18:25 UTC)
Expired
May 30, 2011, 2:00 PM CDT
In force
35 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Goodhue County, MN, Rice County, MN, Steele County, MN, Pepin County, WI, Pierce County, WI

The radar

The Minneapolis radar (KMPX), 91 km from the middle of the area, began a volume at 18:28 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

Davenport, (KDVN), launched 12:00Z, 6.4 hours before the alert went out and 348 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, Davenport, at 12:00Z on 2011-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1439 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2011-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 111 square meters per square second.193958Sfc1 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
1439 J/kg
Mixed-layer CIN
-466 J/kg
Mixed-layer LCL
1089 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
111 m²/s²
0-3 km storm-relative helicity
73 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.

159 
WUUS53 KMPX 301825
SVRMPX
MNC049-131-147-WIC091-093-301900-
/O.NEW.KMPX.SV.W.0066.110530T1825Z-110530T1900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
125 PM CDT MON MAY 30 2011

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GOODHUE COUNTY IN SOUTHEAST MINNESOTA...
  SOUTHEASTERN RICE COUNTY IN SOUTH CENTRAL MINNESOTA...
  NORTHEASTERN STEELE COUNTY IN SOUTH CENTRAL MINNESOTA...
  EXTREME SOUTHWESTERN PEPIN COUNTY IN WEST CENTRAL WISCONSIN...
  SOUTH CENTRAL PIERCE COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 200 PM CDT

* AT 119 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH.
  THIS STORM WAS LOCATED NEAR OWATONNA...AND MOVING NORTHEAST AT 75
  MPH.

LOCATIONS IN THE WARNING INCLUDE...
  RED WING...
  KENYON...
  BOMBAY...
  PINE ISLAND...
  WANAMINGO...
  ZUMBROTA...
  HADER...
  WASTEDO...
  GOODHUE...
  WELCH...
  FRONTENAC...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4417 9321 4466 9267 4444 9220 4445 9241
      4436 9244 4436 9254 4423 9254 4419 9262
      4419 9303 4403 9306
TIME...MOT...LOC 1826Z 217DEG 67KT 4423 9305
WIND...HAIL 60MPH 1.00IN

$$
1 follow-up statement
021 
WWUS53 KMPX 301848
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
148 PM CDT MON MAY 30 2011

MNC131-147-301902-
/O.CAN.KMPX.SV.W.0066.000000T0000Z-110530T1900Z/
RICE MN-STEELE MN-
148 PM CDT MON MAY 30 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN STEELE AND
SOUTHEASTERN RICE COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED OR MOVED OUT OF 
THE WARNED AREA.

LAT...LON 4434 9293 4461 9260 4457 9247 4450 9231
      4447 9227 4445 9241 4437 9253 4429 9283
TIME...MOT...LOC 1847Z 217DEG 67KT 4454 9272

$$

MNC049-301900-
/O.CON.KMPX.SV.W.0066.000000T0000Z-110530T1900Z/
GOODHUE MN-
148 PM CDT MON MAY 30 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR GOODHUE COUNTY
UNTIL 200 PM CDT...

AT 142 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES NORTHEAST
OF WASTEDO...OR 12 MILES SOUTHWEST OF RED WING...MOVING NORTHEAST AT
75 MPH.

LOCATIONS IMPACTED INCLUDE...
  RED WING AND FRONTENAC.

LAT...LON 4434 9293 4461 9260 4457 9247 4450 9231
      4447 9227 4445 9241 4437 9253 4429 9283
TIME...MOT...LOC 1847Z 217DEG 67KT 4454 9272
WIND...HAIL 60MPH 1.00IN

$$

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 30, 2:55 AM CDTSevere Thunderstorm WarningMPXBrown, Redwood50 min
May 30, 3:17 AM CDTSpecial Weather StatementMPXDouglas, Pope43 min
May 30, 3:23 AM CDTSpecial Weather StatementMPXMcLeod52 min
May 30, 3:42 AM CDTSevere Thunderstorm WarningMPXCarver, McLeod, Meeker, Wright51 min
May 30, 4:20 AM CDTSpecial Weather StatementMPXAnoka, Hennepin, Ramsey40 min
May 30, 4:23 AM CDTSpecial Weather StatementMPXYellow Medicine52 min
May 30, 4:51 AM CDTSevere Thunderstorm WarningMPXMcLeod, Meeker, Renville, Sibley, Wright54 min
May 30, 4:56 AM CDTSevere Thunderstorm WarningMPXRedwood, Renville, Yellow Medicine64 min
May 30, 5:19 AM CDTSpecial Weather StatementMPXHennepin41 min
May 30, 5:40 AM CDTSpecial Weather StatementMPXWright50 min
May 30, 6:03 AM CDTSevere Thunderstorm WarningMPXKandiyohi, Meeker42 min
May 30, 6:50 AM CDTSpecial Weather StatementMPXWright40 min
May 30, 7:31 AM CDTSpecial Weather StatementMPXAnoka, Isanti44 min
May 30, 10:07 AM CDTSpecial Weather StatementMPXAnoka, Carver, Chisago, Hennepin, Ramsey, Scott38 min
May 30, 10:25 AM CDTSevere Thunderstorm WarningMPXAnoka, Carver, Chisago, Dakota, Hennepin, Ramsey and 2 more50 min
May 30, 10:40 AM CDTRiver Flood WarningMPXRedwood11 hr
May 30, 10:40 AM CDTRiver Flood WarningMPXChippewa, Lac qui Parle, Yellow Medicine14 days
May 30, 10:40 AM CDTRiver Flood WarningMPXCarver4 days
May 30, 12:47 PM CDTSevere Thunderstorm WarningMPXGoodhue27 min
May 30, 12:56 PM CDTSevere Thunderstorm WarningMPXWashington34 min
May 30, 2:43 AM CDTSpecial Weather StatementMPXBarron47 min
May 30, 10:52 AM CDTSpecial Weather StatementMPXPolk38 min
May 30, 11:45 AM CDTSpecial Weather StatementMPXBarron30 min
May 30, 1:34 PM CDTSevere Thunderstorm WarningMPXBarron, Dunn, Polk, Saint Croix26 min
May 30, 2:16 PM CDTSpecial Weather StatementMPXDunn44 min
May 30, 2:45 PM CDTSevere Thunderstorm WarningMPXBarron, Chippewa, Dunn, Rusk35 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2011Severe Thunderstorm Warnings in Wisconsin, 2011Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.