Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 86, NWS Twin Cities, MN

June 18, 20114 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 18, 2011, 12:21 AM CDT for 4 counties in Minnesota. It was in force for 54 min. 1 report 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
Jun 18, 2011, 12:21 AM CDT (05:21 UTC)
Expired
Jun 18, 2011, 1:15 AM CDT
In force
54 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Benton County, MN, Morrison County, MN, Sherburne County, MN, Stearns County, MN

The radar

The Minneapolis radar (KMPX), 106 km from the middle of the area, began a volume at 05:22 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
Jun 18, 12:45 AM CDTTSTM WND GST 606 Nnw St Cloud, MN1 INCH TREE LIMBS DOWN

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
Jun 17, 7:22 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 5.4 hours before the alert went out and 105 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 00:00Z on 2011-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1159 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 00:00Z on 2011-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 square meters per square second.1939Sfc1 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
1159 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
1224 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
187 m²/s²
Significant tornado parameter
0.3
Supercell composite
4.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

854 
WUUS53 KMPX 180521
SVRMPX
MNC009-097-141-145-180615-
/O.NEW.KMPX.SV.W.0086.110618T0521Z-110618T0615Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1221 AM CDT SAT JUN 18 2011

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BENTON COUNTY IN CENTRAL MINNESOTA...
  SOUTHEASTERN MORRISON COUNTY IN CENTRAL MINNESOTA...
  EXTREME NORTHWESTERN SHERBURNE COUNTY IN CENTRAL MINNESOTA...
  EASTERN STEARNS COUNTY IN CENTRAL MINNESOTA...

* UNTIL 115 AM CDT

* AT 1218 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
  LOCATED NEAR COLD SPRING...OR ABOUT 13 MILES WEST OF ST CLOUD...AND
  MOVING NORTHEAST AT 45 MPH.  PENNY SIZE HAIL MAY ALSO ACCOMPANY
  THESE DAMAGING WINDS.

LOCATIONS IN THE WARNING INCLUDE...
  ST CLOUD...
  COLD SPRING...
  FARMING...
  RICHMOND...
  AVON...
  PLEASANT LAKE...
  COLLEGEVILLE...
  ST JOSEPH...
  WAITE PARK...
  SARTELL...
  SAUK RAPIDS...
  ST STEPHEN...
  RICE...
  
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN MINNESOTA.

&&

LAT...LON 4600 9384 4565 9377 4538 9448 4557 9462
TIME...MOT...LOC 0521Z 232DEG 41KT 4555 9441
WIND...HAIL 60MPH 0.75IN

$$
2 follow-up statements
295 
WWUS53 KMPX 180553
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1253 AM CDT SAT JUN 18 2011

MNC009-097-141-145-180615-
/O.CON.KMPX.SV.W.0086.000000T0000Z-110618T0615Z/
MORRISON MN-STEARNS MN-SHERBURNE MN-BENTON MN-
1253 AM CDT SAT JUN 18 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR BENTON...
NORTHWESTERN SHERBURNE...NORTHEASTERN STEARNS AND SOUTHEASTERN
MORRISON COUNTIES UNTIL 115 AM CDT...

AT 1245 AM CDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM WITH ESTIMATED 60 MPH WINDS IN DOWNTOWN ST CLOUD.
THIS STORM WAS LOCATED NEAR SAUK RAPIDS...OR 5 MILES NORTH OF ST CLOUD...
MOVING NORTHEAST AT 35 MPH.

ANOTHER POTENTIAL SEVERE THUNDERSTORM WAS LOCATED JUST SOUTH OF HILLMAN 
WHICH COULD BE PRODUCING LARGE HAIL 

LOCATIONS IMPACTED INCLUDE...
  MAYHEW...PARENT...LITTLE ROCK...FOLEY...GILMAN...RONNEBY...MORRILL
  AND RUM RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4566 9445 4600 9384 4565 9377 4548 9423
TIME...MOT...LOC 0550Z 239DEG 30KT 4565 9410
WIND...HAIL 60MPH <.75IN

$$
649 
WWUS53 KMPX 180611
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
111 AM CDT SAT JUN 18 2011

MNC009-097-141-145-180625-
/O.EXP.KMPX.SV.W.0086.000000T0000Z-110618T0615Z/
MORRISON MN-STEARNS MN-SHERBURNE MN-BENTON MN-
111 AM CDT SAT JUN 18 2011

...THE SEVERE THUNDERSTORM WARNING FOR BENTON...NORTHWESTERN
SHERBURNE...NORTHEASTERN STEARNS AND SOUTHEASTERN MORRISON COUNTIES
WILL EXPIRE AT 115 AM CDT...

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 TO 40 MPH AND SMALL HAIL ARE STILL 
POSSIBLE WITH THUNDERSTORMS IN THE AREA.

LAT...LON 4566 9445 4600 9384 4564 9377 4548 9423
TIME...MOT...LOC 0610Z 239DEG 30KT 4572 9388

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 7:00 PM CDTTornado WarningMPXKandiyohi22 min
Jun 17, 7:04 PM CDTSevere Thunderstorm WarningMPXKandiyohi26 min
Jun 17, 7:50 PM CDTSevere Thunderstorm WarningMPXFaribault, Martin55 min
Jun 17, 7:57 PM CDTAreal Flood AdvisoryMPXKandiyohi3 hr
Jun 17, 7:57 PM CDTSevere Thunderstorm WarningMPXKandiyohi33 min
Jun 17, 8:18 PM CDTSevere Thunderstorm WarningMPXKandiyohi27 min
Jun 17, 8:25 PM CDTAreal Flood WarningMPXKandiyohi6 hr
Jun 17, 8:47 PM CDTSpecial Weather StatementMPXBig Stone58 min
Jun 17, 9:33 PM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Swift57 min
Jun 17, 9:55 PM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Yellow Medicine35 min
Jun 17, 10:09 PM CDTSevere Thunderstorm WarningMPXLe Sueur, Scott, Sibley66 min
Jun 17, 10:22 PM CDTSevere Thunderstorm WarningMPXChippewa, Kandiyohi, Renville, Swift, Yellow Medicine53 min
Jun 17, 10:42 PM CDTSevere Thunderstorm WarningMPXCarver, Scott, Sibley48 min
Jun 17, 11:25 PM CDTSpecial Weather StatementMPXKandiyohi, Meeker, Stearns65 min
Jun 17, 11:34 PM CDTSpecial Weather StatementMPXDakota56 min
Jun 18, 12:09 AM CDTSpecial Weather StatementMPXBenton, Meeker, Stearns51 min
Jun 18, 6:38 AM CDTSpecial Weather StatementMPXDakota37 min
Jun 18, 11:58 AM CDTFlood WatchMPXAnoka, Blue Earth, Brown, Carver, Chisago, Dakota and 14 more20 hr
Jun 18, 3:46 PM CDTSevere Thunderstorm WarningMPXGoodhue44 min
Jun 18, 4:28 PM CDTSevere Thunderstorm WarningMPXGoodhue47 min
Jun 18, 5:22 PM CDTSevere Thunderstorm WarningMPXGoodhue53 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.