Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 129, NWS Twin Cities, MN

July 10, 20115 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 10, 2011, 8:40 PM CDT for 5 counties in Minnesota. It was in force for 65 min. 7 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 10, 2011, 8:40 PM CDT (01:40 UTC)
Expired: Jul 10, 2011, 9:45 PM CDT
In force: 65 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 80.0 mph

Counties Chippewa County, MN, Kandiyohi County, MN, Redwood County, MN, Renville County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 140 km from the middle of the area, began a volume at 01:43 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 10, 8:45 PM CDT	TSTM WND GST 62	Hanley Falls, MN	MNDOT HWY 23 AND MILE POST 94
Jul 10, 8:48 PM CDT	TSTM WND GST 51	Clara City, MN
Jul 10, 8:55 PM CDT	HAIL 0.75	Sacred Heart, MN	SMALL BRANCHES DOWN
Jul 10, 9:15 PM CDT	TSTM WND DMG	Renville, MN	POWER OUT
Jul 10, 9:24 PM CDT	TSTM WND GST 64	Olivia, MN	OVL AIRPORT AWOS ESTIMATED TIME.
Jul 10, 9:25 PM CDT	TSTM WND GST 55	Redwood Falls, MN	RWF AIRPORT ASOS
Jul 10, 9:30 PM CDT	TSTM WND DMG	1 Se Franklin, MN	DAMAGE OVER A 3/4 MILE PATH

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.

Issued	Product	Office	Lasted
Jul 10, 6:12 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.7 hours before the alert went out and 137 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: 1401 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 1316 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 15 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.

447 
WUUS53 KMPX 110140
SVRMPX
MNC023-067-127-129-173-110245-
/O.NEW.KMPX.SV.W.0129.110711T0140Z-110711T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
840 PM CDT SUN JUL 10 2011

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CHIPPEWA COUNTY IN WEST CENTRAL MINNESOTA...
  SOUTHERN KANDIYOHI COUNTY IN CENTRAL MINNESOTA...
  REDWOOD COUNTY IN SOUTHWEST MINNESOTA...
  RENVILLE COUNTY IN CENTRAL MINNESOTA...
  EASTERN YELLOW MEDICINE COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 945 PM CDT

* AT 838 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
  CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL AND DESTRUCTIVE WINDS IN
  EXCESS OF 80 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 7 MILES NORTHWEST OF RAYMOND TO COTTONWOOD...AND MOVING EAST
  AT 60 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  GRANITE FALLS...
  WILLMAR...
  OLIVIA...
  REDWOOD FALLS...
  MAYNARD...
  HANLEY FALLS...
  GLUEK...
  HAZEL RUN...
  SPRING CREEK...
  CLARA CITY...
  MINNESOTA FALLS...
  WOOD LAKE...
  RAYMOND...
  SACRED HEART...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE WINDS...WHICH CAN UPROOT
TREES...DOWN POWER LINES...AND CAUSE DAMAGE TO ROOFS AND WINDOWS.
EVACUATE MOBILE HOMES AS THEY MAY BE OVERTURNED. LARGE HAIL IS ALSO
EXPECTED...WHICH CAN CAUSE DAMAGE TO VEHICLES AND WINDOWS. SEEK
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

REPORT ANY SIGNIFICANT WIND OR HAIL DAMAGE TO THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4463 9606 4477 9576 4515 9537 4515 9475
      4486 9475 4449 9484 4448 9487 4429 9487
      4429 9558 4462 9561
TIME...MOT...LOC 0140Z 270DEG 52KT 4509 9529 4460 9563
WIND...HAIL 80MPH 1.25IN

$$

2 follow-up statements

495 
WWUS53 KMPX 110211
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
911 PM CDT SUN JUL 10 2011

MNC023-067-127-129-173-110245-
/O.CON.KMPX.SV.W.0129.000000T0000Z-110711T0245Z/
CHIPPEWA MN-KANDIYOHI MN-REDWOOD MN-RENVILLE MN-YELLOW MEDICINE MN-
911 PM CDT SUN JUL 10 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR RENVILLE AND
SOUTHERN KANDIYOHI COUNTIES IN CENTRAL MINNESOTA...AND REDWOOD COUNTY
IN SOUTHWEST MINNESOTA...AND EASTERN YELLOW MEDICINE AND SOUTHEASTERN
CHIPPEWA COUNTIES IN WEST CENTRAL MINNESOTA UNTIL 945 PM CDT...

AT 906 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DESTRUCTIVE WINDS IN EXCESS OF 75 MPH.  THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM BLOMKEST TO 8 MILES WEST OF LUCAN...
MOVING EAST AT 60 MPH.

LOCATIONS IMPACTED INCLUDE...
  OLIVIA...REDWOOD FALLS...DANUBE...LUCAN...LAKE LILLIAN...
  SEAFORTH...BECHYN...THORPE...WABASSO...NORTH REDWOOD...BIRD
  ISLAND...MORTON...CLEMENTS...FRANKLIN AND MORGAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE WINDS...WHICH CAN UPROOT
TREES...DOWN POWER LINES...AND CAUSE DAMAGE TO ROOFS AND WINDOWS.
EVACUATE MOBILE HOMES AS THEY MAY BE OVERTURNED. LARGE HAIL IS ALSO
EXPECTED...WHICH CAN CAUSE DAMAGE TO VEHICLES AND WINDOWS. SEEK
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

&&

LAT...LON 4463 9575 4483 9556 4503 9532 4501 9476
      4486 9475 4449 9484 4450 9486 4429 9487
      4429 9558 4462 9561
TIME...MOT...LOC 0211Z 270DEG 52KT 4495 9498 4443 9548
WIND...HAIL 75MPH 1.00IN

$$

543 
WWUS53 KMPX 110224
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
924 PM CDT SUN JUL 10 2011

MNC023-110238-
/O.CAN.KMPX.SV.W.0129.000000T0000Z-110711T0245Z/
CHIPPEWA MN-
924 PM CDT SUN JUL 10 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHIPPEWA COUNTY
IN WEST CENTRAL MINNESOTA IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

LAT...LON 4443 9559 4456 9556 4473 9547 4498 9511
      4490 9476 4489 9474 4449 9484 4450 9486
      4429 9487 4429 9558
TIME...MOT...LOC 0223Z 270DEG 52KT 4494 9478 4433 9539

$$

MNC067-127-129-173-110245-
/O.CON.KMPX.SV.W.0129.000000T0000Z-110711T0245Z/
KANDIYOHI MN-REDWOOD MN-RENVILLE MN-YELLOW MEDICINE MN-
924 PM CDT SUN JUL 10 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
YELLOW MEDICINE...WESTERN RENVILLE...REDWOOD AND SOUTHERN KANDIYOHI
COUNTIES UNTIL 945 PM CDT...

AT 919 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DESTRUCTIVE WINDS IN EXCESS OF 75 MPH.  THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM LAKE LILLIAN TO 6 MILES SOUTHWEST OF
LUCAN...MOVING EAST AT 60 MPH.

THE SEVERE WINDS MAY LAST WELL AFTER THE INITIAL GUSTS MOVE THROUGH. 

LOCATIONS IMPACTED INCLUDE...
  REDWOOD FALLS...WABASSO...BIRD ISLAND...NORTH REDWOOD...MORTON...
  CLEMENTS...FRANKLIN...MORGAN AND WANDA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE WINDS...WHICH CAN UPROOT
TREES...DOWN POWER LINES...AND CAUSE DAMAGE TO ROOFS AND WINDOWS.
EVACUATE MOBILE HOMES AS THEY MAY BE OVERTURNED. LARGE HAIL IS ALSO
EXPECTED...WHICH CAN CAUSE DAMAGE TO VEHICLES AND WINDOWS. SEEK
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

&&

LAT...LON 4443 9559 4456 9556 4473 9547 4498 9511
      4490 9476 4489 9474 4449 9484 4450 9486
      4429 9487 4429 9558
TIME...MOT...LOC 0223Z 270DEG 52KT 4494 9478 4433 9539
WIND...HAIL 75MPH 1.00IN

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 7:13 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Stevens, Swift	62 min
Jul 10, 7:25 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Lac qui Parle, Pope, Renville, Swift and 1 more	50 min
Jul 10, 7:36 PM CDT	Tornado Warning	MPX	Kandiyohi, Pope, Stearns	39 min
Jul 10, 7:40 PM CDT	Tornado Warning	MPX	Lac qui Parle	35 min
Jul 10, 7:42 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Pope, Stearns, Todd	63 min
Jul 10, 7:48 PM CDT	Severe Thunderstorm Warning	MPX	Yellow Medicine	57 min
Jul 10, 7:57 PM CDT	Tornado Warning	MPX	Swift	33 min
Jul 10, 8:04 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Lac qui Parle, Renville, Yellow Medicine	56 min
Jul 10, 8:11 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Stearns	64 min
Jul 10, 8:24 PM CDT	Areal Flood Advisory	MPX	Benton, Douglas, Kandiyohi, Morrison, Pope, Sherburne and 3 more	3 hr
Jul 10, 8:29 PM CDT	Severe Thunderstorm Warning	MPX	Morrison	46 min
Jul 10, 8:36 PM CDT	Tornado Warning	MPX	Kandiyohi, Meeker	24 min
Jul 10, 8:45 PM CDT	Severe Thunderstorm Warning	MPX	Stearns	30 min
Jul 10, 8:52 PM CDT	Tornado Warning	MPX	Chippewa, Renville	38 min
Jul 10, 9:06 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Sherburne, Stearns, Wright	54 min
Jul 10, 9:20 PM CDT	Severe Thunderstorm Warning	MPX	Brown, McLeod, Nicollet, Redwood, Renville, Sibley	55 min
Jul 10, 9:30 PM CDT	Special Weather Statement	MPX	Blue Earth, Faribault, Freeborn, Le Sueur, Martin, Rice and 3 more	75 min
Jul 10, 9:33 PM CDT	Special Weather Statement	MPX	Benton	42 min
Jul 10, 9:37 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Carver, Hennepin, Sherburne, Wright	53 min
Jul 10, 9:46 PM CDT	Special Weather Statement	MPX	Dakota, Ramsey, Scott, Washington	74 min
Jul 10, 10:09 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, Le Sueur, McLeod, Nicollet, Scott and 2 more	66 min
Jul 10, 10:10 PM CDT	Tornado Warning	MPX	McLeod, Sibley	23 min
Jul 10, 10:17 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Dakota, Hennepin, Ramsey, Washington	58 min
Jul 10, 10:48 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Carver, Le Sueur, Rice, Scott, Steele and 1 more	57 min
Jul 10, 11:02 PM CDT	Special Weather Statement	MPX	Faribault, Freeborn, Martin	58 min
Jul 10, 11:13 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Rice, Steele	47 min
Jul 10, 11:39 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue	51 min
Jul 11, 1:34 AM CDT	Special Weather Statement	MPX	Faribault, Martin	56 min
Jul 11, 2:11 AM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	64 min
Jul 11, 3:20 AM CDT	Areal Flood Advisory	MPX	Martin	3 hr

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.