Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 101, NWS Twin Cities, MN

May 27, 2012Le Sueur County, Rice County, Scott County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 27, 2012, 6:57 PM CDT for Le Sueur County, Rice County, Scott County, Minnesota. It was in force for 48 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 27, 2012, 6:57 PM CDT (23:57 UTC)
Expired
May 27, 2012, 7:45 PM CDT
In force
48 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
65.0 mph

Counties Le Sueur County, MN, Rice County, MN, Scott County, MN

The radar

The Minneapolis radar (KMPX), 37 km from the middle of the area, began a volume at 23:58 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 27, 7:00 PM CDTHAIL 12 Nw Le Center, MNSMALL BRANCHES ALSO DOWN. WIND DRIVEN HAIL BROKE WINDOW.
May 27, 7:12 PM CDTHAIL 11 Se New Prague, MN55 TO 60 MPH WINDS

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 27, 6:08 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 12.0 hours before the alert went out and 37 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 2012-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 845 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2012-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 380 square meters per square second.19395878Sfc1 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
845 J/kg
Mixed-layer CIN
-438 J/kg
Mixed-layer LCL
662 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
380 m²/s²
0-3 km storm-relative helicity
375 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.

688 
WUUS53 KMPX 272357
SVRMPX
MNC079-131-139-280045-
/O.NEW.KMPX.SV.W.0101.120527T2357Z-120528T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
657 PM CDT SUN MAY 27 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA...
  NORTHWESTERN RICE COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTHERN SCOTT COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 745 PM CDT

* AT 654 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OF 65 MPH. THIS
  STORM WAS LOCATED NEAR MONTGOMERY...OR ABOUT 15 MILES EAST OF LE
  SUEUR...AND MOVING NORTH AT 30 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  LE CENTER...
  KILKENNY...
  ST HENRY...
  MONTGOMERY...
  NEW PRAGUE...
  VESELI...
  JORDAN...

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.

WIND DAMAGE WITH THIS STORM WILL OCCUR WELL AHEAD OF ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4467 9369 4465 9333 4427 9358 4433 9388
TIME...MOT...LOC 2357Z 202DEG 27KT 4443 9360
WIND...HAIL 65MPH 1.00IN

$$
1 follow-up statement
342 
WWUS53 KMPX 280005
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
705 PM CDT SUN MAY 27 2012

MNC079-131-139-280045-
/O.CON.KMPX.SV.W.0101.000000T0000Z-120528T0045Z/
LE SUEUR MN-RICE MN-SCOTT MN-
705 PM CDT SUN MAY 27 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
SCOTT...NORTHWESTERN RICE AND LE SUEUR COUNTIES UNTIL 745 PM CDT...

AT 703 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING
WINDS OF 65 MPH.  THIS STORM WAS LOCATED NEAR LE CENTER...OR 11 MILES
EAST OF LE SUEUR...MOVING NORTH AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  MONTGOMERY...VESELI...NEW PRAGUE...JORDAN...HEIDELBERG...HELENA AND
  ST BENEDICT.

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.

WIND DAMAGE WITH THIS STORM WILL OCCUR WELL AHEAD OF ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4467 9369 4465 9333 4427 9358 4433 9388
TIME...MOT...LOC 0005Z 199DEG 29KT 4444 9369
WIND...HAIL 60MPH 1.75IN

$$

JLT

The office that day

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

IssuedProductOfficeCountiesLasted
May 26, 9:50 PM CDTRiver Flood WarningMPXCarver8 days
May 26, 10:30 PM CDTSpecial Weather StatementMPXBenton, Chisago, Isanti60 min
May 26, 11:03 PM CDTSpecial Weather StatementMPXDouglas, Pope, Stearns, Stevens57 min
May 26, 11:11 PM CDTSevere Thunderstorm WarningMPXPope, Stearns49 min
May 26, 11:51 PM CDTSevere Thunderstorm WarningMPXBenton, Douglas, Morrison, Pope, Stearns, Todd54 min
May 27, 12:41 AM CDTSpecial Weather StatementMPXKanabec, Mille Lacs64 min
May 27, 12:52 AM CDTSpecial Weather StatementMPXMorrison53 min
May 27, 1:44 AM CDTSevere Thunderstorm WarningMPXKanabec, Mille Lacs44 min
May 27, 2:03 AM CDTFlash Flood WarningMPXKanabec, Mille Lacs, Morrison3 hr
May 27, 3:32 AM CDTFlash Flood WatchMPXAnoka, Benton, Blue Earth, Brown, Carver, Chisago and 22 more26 hr
May 27, 9:08 AM CDTRiver Flood WatchMPXGoodhue50 hr
May 27, 9:08 AM CDTRiver Flood WatchMPXDakota, Hennepin, Scott5 days
May 27, 9:08 AM CDTRiver Flood WatchMPXWright50 hr
May 27, 9:08 AM CDTRiver Flood WatchMPXHennepin, Wright47 hr
May 27, 9:08 AM CDTRiver Flood WatchMPXBenton, Sherburne, Stearns3 days
May 27, 9:08 AM CDTRiver Flood WatchMPXAnoka, Hennepin50 hr
May 27, 9:08 AM CDTRiver Flood WatchMPXDakota, Ramsey, Washington3 days
May 27, 9:08 AM CDTRiver Flood WatchMPXDakota, Washington53 hr
May 27, 9:08 AM CDTRiver Flood WatchMPXGoodhue51 hr
May 27, 5:07 PM CDTSpecial Weather StatementMPXFaribault, Steele, Waseca38 min
May 27, 6:11 PM CDTSevere Thunderstorm WarningMPXChisago49 min
May 27, 6:38 PM CDTSpecial Weather StatementMPXLe Sueur52 min
May 27, 6:45 PM CDTSpecial Weather StatementMPXRenville30 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2012Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.