Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 176, NWS Twin Cities, MN

July 23, 2011Goodhue County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 23, 2011, 10:09 AM CDT for Goodhue County, Minnesota. It was in force for 51 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: Jul 23, 2011, 10:09 AM CDT (15:09 UTC)
Expired: Jul 23, 2011, 11:00 AM CDT
In force: 51 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Goodhue County, MN

The radar

The Minneapolis radar (KMPX), 93 km from the middle of the area, began a volume at 15:09 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

Time	Report	Where	Remark
Jul 23, 10:13 AM CDT	TSTM WND DMG	Zumbrota, MN	SMALL AND LARGES TREES DOWN ALL OVER TOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 3.2 hours before the alert went out and 96 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1467 J/kg
Mixed-layer CIN: -142 J/kg
Mixed-layer LCL: 875 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 175 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

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

543 
WUUS53 KMPX 231509
SVRMPX
MNC049-231600-
/O.NEW.KMPX.SV.W.0176.110723T1509Z-110723T1600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1009 AM CDT SAT JUL 23 2011

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN AND SOUTHERN GOODHUE COUNTY IN SOUTHEAST MINNESOTA...

* UNTIL 1100 AM CDT

* AT 1008 AM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  CANNON FALLS TO WANAMINGO TO 5 MILES SOUTH OF KENYON...AND MOVING  
  EAST AT 40 MPH. VERY HEAVY RAIN CAN ALSO BE EXPECTED WITH THESE    
  STORMS. 

LOCATIONS IN THE WARNING INCLUDE...
  WANAMINGO...
  HADER...
  ZUMBROTA...
  GOODHUE...
  PINE ISLAND...
  BELLECHESTER...
  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.

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

&&

LAT...LON 4420 9302 4432 9281 4453 9283 4452 9233
      4445 9230 4445 9241 4437 9242 4436 9245
      4435 9254 4419 9255
TIME...MOT...LOC 1508Z 287DEG 36KT 4449 9275 4430 9273
          4419 9293
WIND...HAIL 60MPH 1.00IN

$$

1 follow-up statement

520 
WWUS53 KMPX 231530
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1030 AM CDT SAT JUL 23 2011

MNC049-231600-
/O.CON.KMPX.SV.W.0176.000000T0000Z-110723T1600Z/
GOODHUE MN-
1030 AM CDT SAT JUL 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
GOODHUE COUNTY UNTIL 1100 AM CDT...

AT 1027 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG
A LINE EXTENDING FROM GOODHUE TO MAZEPPA TO MANTORVILLE...MOVING 
SOUTHEAST AT 25 MPH. VERY HEAVY RAIN WILL ALSO ACCOMPANY THE STORMS.

LOCATIONS IMPACTED INCLUDE...
  GOODHUE...ZUMBROTA...BELLECHESTER...PINE ISLAND AND FRONTENAC.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4420 9302 4432 9281 4453 9283 4452 9233
      4445 9230 4445 9241 4437 9242 4436 9245
      4435 9254 4419 9255
TIME...MOT...LOC 1529Z 310DEG 21KT 4442 9258 4423 9256
          4412 9276
WIND...HAIL 60MPH 1.00IN

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 7:11 PM CDT	Severe Thunderstorm Warning	MPX	Stevens	30 min
Jul 22, 7:55 PM CDT	Special Weather Statement	MPX	Lac qui Parle	50 min
Jul 22, 8:47 PM CDT	Special Weather Statement	MPX	Lac qui Parle	73 min
Jul 23, 3:56 AM CDT	Heat Advisory	MPX	Blue Earth, Brown, Faribault, Freeborn, Goodhue, Le Sueur and 7 more	11 hr
Jul 23, 4:38 AM CDT	Special Weather Statement	MPX	Douglas, Pope, Stevens	67 min
Jul 23, 4:48 AM CDT	Severe Thunderstorm Warning	MPX	Douglas	42 min
Jul 23, 5:21 AM CDT	Severe Thunderstorm Warning	MPX	Douglas, Morrison, Pope, Stearns, Todd	54 min
Jul 23, 6:21 AM CDT	Special Weather Statement	MPX	Benton, Kandiyohi, Meeker, Mille Lacs, Morrison, Sherburne and 1 more	69 min
Jul 23, 7:39 AM CDT	Special Weather Statement	MPX	Anoka, Chisago, Isanti, Kanabec, McLeod, Meeker and 5 more	51 min
Jul 23, 8:27 AM CDT	Special Weather Statement	MPX	Carver, Scott	48 min
Jul 23, 8:46 AM CDT	Severe Thunderstorm Warning	MPX	Carver, Le Sueur, Rice, Scott	44 min
Jul 23, 9:17 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Rice, Scott, Steele	58 min
Jul 23, 1:04 PM CDT	Special Weather Statement	MPX	Pope	56 min
Jul 23, 1:53 PM CDT	Special Weather Statement	MPX	Stearns	52 min
Jul 23, 1:55 PM CDT	Special Weather Statement	MPX	Benton	35 min
Jul 23, 2:34 PM CDT	Special Weather Statement	MPX	Sherburne	41 min
Jul 23, 3:08 PM CDT	Special Weather Statement	MPX	Sherburne	37 min
Jul 23, 4:03 PM CDT	Special Weather Statement	MPX	Ramsey, Washington	57 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2011 Every 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.