Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 95, NWS Twin Cities, MN

July 1, 2011Benton County, Morrison County, Stearns County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 1, 2011, 4:59 PM CDT for Benton County, Morrison County, Stearns County, Minnesota. It was in force for 61 min. 8 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 1, 2011, 4:59 PM CDT (21:59 UTC)
Expired
Jul 1, 2011, 6:00 PM CDT
In force
61 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.25 in
Wind
65.0 mph

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

The radar

The Minneapolis radar (KMPX), 111 km from the middle of the area, began a volume at 22:00 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
Jul 1, 5:24 PM CDTHAIL 1Collegeville, MN
Jul 1, 5:32 PM CDTHAIL 1.75St Joseph, MNINTERSTATE 94 AND COUNTY ROAD 2
Jul 1, 5:38 PM CDTTSTM WND DMGSt Stephen, MNPOWER POLES DOWN
Jul 1, 5:44 PM CDTHAIL 13 N Foley, MN
Jul 1, 5:44 PM CDTHAIL 15 Nnw St Cloud, MN
Jul 1, 5:45 PM CDTHAIL 1.75Sartell, MN
Jul 1, 5:52 PM CDTHAIL 1Rice, MN
Jul 1, 5:58 PM CDTHAIL 1.25Sartell, MNDENTS ON TRUCK

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
Jul 1, 2:08 PM CDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.0 hours before the alert went out and 110 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 2011-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3970 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 2011-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
3970 J/kg
Mixed-layer CIN
-245 J/kg
Mixed-layer LCL
1089 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
21 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.7

Open this sounding in Storm Lab

The text

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

063 
WUUS53 KMPX 012159
SVRMPX
MNC009-097-145-012300-
/O.NEW.KMPX.SV.W.0095.110701T2159Z-110701T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
459 PM CDT FRI JUL 1 2011

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BENTON COUNTY IN CENTRAL MINNESOTA...
  SOUTH CENTRAL MORRISON COUNTY IN CENTRAL MINNESOTA...
  EASTERN STEARNS COUNTY IN CENTRAL MINNESOTA...

* UNTIL 600 PM CDT

* AT 455 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING HALF DOLLAR SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 65
  MPH. THIS STORM WAS LOCATED NEAR ROSCOE...OR ABOUT 22 MILES WEST OF
  ST CLOUD...AND MOVING NORTHEAST AT 35 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  ST CLOUD...
  ROSCOE...
  RICHMOND...
  COLD SPRING...
  FARMING...
  ALBANY...
  PLEASANT LAKE...
  AVON...
  COLLEGEVILLE...
  ST JOSEPH...
  WAITE PARK...
  HOLDINGFORD...
  SAUK RAPIDS...
  SARTELL...

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 4595 9424 4569 9387 4538 9454 4549 9474
TIME...MOT...LOC 2158Z 221DEG 29KT 4550 9460
WIND...HAIL 65MPH 1.25IN

$$
2 follow-up statements
998 
WWUS53 KMPX 012219
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
519 PM CDT FRI JUL 1 2011

MNC009-097-145-012300-
/O.CON.KMPX.SV.W.0095.000000T0000Z-110701T2300Z/
BENTON MN-MORRISON MN-STEARNS MN-
519 PM CDT FRI JUL 1 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
STEARNS...SOUTH CENTRAL MORRISON AND NORTHWESTERN BENTON COUNTIES
UNTIL 600 PM CDT...

AT 513 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
AVON...OR 15 MILES WEST OF ST CLOUD...MOVING NORTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  COLLEGEVILLE...ST JOSEPH...WAITE PARK...HOLDINGFORD...SAUK
  RAPIDS...SARTELL...ST STEPHEN...RICE...MAYHEW...ROYALTON...
  GILMAN...LITTLE ROCK AND OPOLE.

STAY INDOORS AND AWAY FROM WINDOWS.

LAT...LON 4542 9448 4554 9468 4595 9424 4569 9387
TIME...MOT...LOC 2219Z 221DEG 29KT 4563 9444
WIND...HAIL 60MPH 1.25IN

$$

TDK
712 
WWUS53 KMPX 012246
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
546 PM CDT FRI JUL 1 2011

MNC009-097-145-012305-
/O.CON.KMPX.SV.W.0095.000000T0000Z-110701T2300Z/
BENTON MN-MORRISON MN-STEARNS MN-
546 PM CDT FRI JUL 1 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
STEARNS...SOUTH CENTRAL MORRISON AND NORTHWESTERN BENTON COUNTIES
UNTIL 600 PM CDT...

AT 541 PM CDT...A SEVERE THUNDERSTORM WITH DAMAGING WINDS IN EXCESS 
OF 60 MPH...AND LARGE HAIL WAS LOCATED FROM RICE TO ST STEPHEN...OR 
12 TO 15 MILES NORTH OF ST CLOUD...MOVING NORTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  RICE...MAYHEW...ROYALTON...LITTLE ROCK AND GILMAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WIND AND LARGE HAIL. 
SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM 
WINDOWS!

&&

LAT...LON 4549 9433 4562 9449 4595 9424 4569 9387
TIME...MOT...LOC 2244Z 221DEG 29KT 4573 9424
WIND...HAIL 60MPH 1.25IN

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 4:05 PM CDTSevere Thunderstorm WarningMPXBrown, Redwood, Renville, Yellow Medicine55 min
Jul 1, 4:31 PM CDTSevere Thunderstorm WarningMPXMeeker, Wright59 min
Jul 1, 4:37 PM CDTTornado WarningMPXRedwood, Renville23 min
Jul 1, 4:53 PM CDTSevere Thunderstorm WarningMPXChippewa, Kandiyohi, Redwood, Renville, Sibley67 min
Jul 1, 4:57 PM CDTTornado WarningMPXRedwood, Renville33 min
Jul 1, 5:13 PM CDTSevere Thunderstorm WarningMPXKandiyohi, McLeod, Meeker, Renville, Sibley, Stearns and 1 more62 min
Jul 1, 5:27 PM CDTSevere Thunderstorm WarningMPXAnoka, Isanti, Sherburne, Wright48 min
Jul 1, 5:38 PM CDTSevere Thunderstorm WarningMPXBenton, Kanabec, Mille Lacs, Morrison67 min
Jul 1, 5:52 PM CDTSevere Thunderstorm WarningMPXAnoka, Benton, Hennepin, Isanti, Meeker, Mille Lacs and 3 more53 min
Jul 1, 6:02 PM CDTSpecial Weather StatementMPXCarver, Hennepin, Scott43 min
Jul 1, 6:16 PM CDTSevere Thunderstorm WarningMPXBenton, Morrison, Stearns29 min
Jul 1, 6:20 PM CDTTornado WarningMPXBenton, Sherburne, Stearns25 min
Jul 1, 6:27 PM CDTSevere Thunderstorm WarningMPXAnoka, Chisago, Isanti, Kanabec, Mille Lacs63 min
Jul 1, 6:42 PM CDTSevere Thunderstorm WarningMPXAnoka, Benton, Chisago, Hennepin, Isanti, Kanabec and 5 more63 min
Jul 1, 6:42 PM CDTSevere Thunderstorm WarningMPXMartin33 min
Jul 1, 6:56 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Brown, Nicollet34 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.