Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 55, NWS Twin Cities, MN

May 28, 20117 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 28, 2011, 2:16 PM CDT for 7 counties in Minnesota. It was in force for 44 min. 4 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 28, 2011, 2:16 PM CDT (19:16 UTC)
Expired
May 28, 2011, 3:00 PM CDT
In force
44 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Carver County, MN, Dakota County, MN, Le Sueur County, MN, McLeod County, MN, Rice County, MN, Scott County, MN, Sibley County, MN

The radar

The Minneapolis radar (KMPX), 48 km from the middle of the area, began a volume at 19:19 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

TimeReportWhereRemark
May 28, 2:35 PM CDTFUNNEL CLOUDWinthrop, MN
May 28, 2:38 PM CDTTORNADO3 W Gaylord, MNTRAINED SPOTTER NOTICED DEBRIS ASSOCIATED WITH FUNNEL.
May 28, 2:40 PM CDTHAIL 12 N Winthrop, MN
May 28, 3:02 PM CDTHAIL 1Arlington, 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.

IssuedProductOfficeLasted
May 28, 2:11 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 7.3 hours before the alert went out and 46 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, Minneapolis, MN at 12:00Z on 2011-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Minneapolis, MN at 12:00Z on 2011-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 square meters per square second.1939587897117136156Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
918 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
172 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.

022 
WUUS53 KMPX 281916
SVRMPX
MNC019-037-079-085-131-139-143-282000-
/O.NEW.KMPX.SV.W.0055.110528T1916Z-110528T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
216 PM CDT SAT MAY 28 2011

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CARVER COUNTY IN EAST CENTRAL MINNESOTA...
  EXTREME SOUTHWESTERN DAKOTA COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHEASTERN LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTHERN MCLEOD COUNTY IN CENTRAL MINNESOTA...
  EXTREME NORTHWESTERN RICE COUNTY IN SOUTH CENTRAL MINNESOTA...
  SCOTT COUNTY IN EAST CENTRAL MINNESOTA...
  SIBLEY COUNTY IN CENTRAL MINNESOTA...

* UNTIL 300 PM CDT

* AT 208 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 WINTHROP...OR ABOUT 10 MILES WEST OF
  GAYLORD...AND MOVING EAST AT 60 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  GAYLORD...
  NEW AUBURN...
  GLENCOE...
  ARLINGTON...
  PLATO...
  GREEN ISLE...
  HENDERSON...
  HAMBURG...
  NEW GERMANY...
  NORWOOD/YOUNG AMERICA...
  MAYER...
  BELLE PLAINE...
  COLOGNE...
  WACONIA...

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 4493 9384 4452 9327 4448 9448 4453 9437
      4457 9445 4466 9455
TIME...MOT...LOC 1916Z 256DEG 54KT 4457 9425
WIND...HAIL 60MPH 1.00IN

$$
1 follow-up statement
059 
WWUS53 KMPX 281930
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
230 PM CDT SAT MAY 28 2011

MNC037-281945-
/O.CAN.KMPX.SV.W.0055.000000T0000Z-110528T2000Z/
DAKOTA MN-
230 PM CDT SAT MAY 28 2011

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHWESTERN DAKOTA 
COUNTY IS CANCELLED...

LAT...LON 4448 9447 4453 9437 4466 9455 4493 9384
      4453 9328
TIME...MOT...LOC 1930Z 254DEG 29KT 4457 9432

$$

MNC019-079-085-131-139-143-282000-
/O.CON.KMPX.SV.W.0055.000000T0000Z-110528T2000Z/
MCLEOD MN-CARVER MN-SCOTT MN-SIBLEY MN-LE SUEUR MN-RICE MN-
230 PM CDT SAT MAY 28 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EXTREME
NORTHWESTERN RICE...NORTHEASTERN LE SUEUR...SIBLEY...SCOTT...CARVER
AND SOUTHERN MCLEOD COUNTIES UNTIL 300 PM CDT...

AT 225 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR WINTHROP...OR
8 MILES WEST OF GAYLORD...MOVING EAST AT 35 MPH.

IN ADDITION...AT 215 PM GOLF BALL SIZE HAIL WAS REPORTED NEAR GIBBON 
WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  GAYLORD...BROWNTON...NEW AUBURN...GLENCOE...ARLINGTON...GREEN
  ISLE...HAMBURG...HENDERSON...PLATO...NORWOOD/YOUNG AMERICA...BELLE
  PLAINE...COLOGNE...WACONIA...MAYER...JORDAN...CARVER...NEW
  PRAGUE...NEW MARKET...WEBSTER AND SUMTER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE WINDOWS...SIDING AND VEHICLES. DAMAGING WINDS
ARE ALSO EXPECTED...WHICH CAN UPROOT TREES AND DOWN POWER LINES. SEEK
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4448 9447 4453 9437 4466 9455 4493 9384
      4453 9328
TIME...MOT...LOC 1930Z 254DEG 29KT 4457 9432
WIND...HAIL 60MPH 1.75IN

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 1:56 PM CDTSevere Thunderstorm WarningMPXNicollet, Redwood, Sibley7 min
May 28, 2:00 PM CDTSevere Thunderstorm WarningMPXBrown, Nicollet, Redwood, Renville, Sibley34 min
May 28, 2:39 PM CDTTornado WarningMPXCarver, Scott, Sibley36 min
May 28, 3:06 PM CDTTornado WarningMPXCarver, Le Sueur, Rice, Scott, Sibley39 min
May 28, 3:45 PM CDTSevere Thunderstorm WarningMPXDakota, Goodhue, Rice, Scott45 min
May 28, 3:57 PM CDTTornado WarningMPXDakota, Goodhue, Rice, Scott33 min
May 28, 4:27 PM CDTSpecial Weather StatementMPXDakota48 min
May 28, 4:35 PM CDTSevere Thunderstorm WarningMPXDakota, Goodhue40 min
May 28, 4:43 PM CDTSpecial Weather StatementMPXKanabec, Mille Lacs47 min
May 28, 6:18 PM CDTSpecial Weather StatementMPXRice42 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.