Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 137, NWS Twin Cities, MN

July 10, 20114 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 10, 2011, 11:13 PM CDT for 4 counties in Minnesota. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 10, 2011, 11:13 PM CDT (04:13 UTC)
Expired: Jul 11, 2011, 12:00 AM CDT
In force: 47 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Dakota County, MN, Goodhue County, MN, Rice County, MN, Steele County, MN

The radar

The Minneapolis radar (KMPX), 60 km from the middle of the area, began a volume at 04:14 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.

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
Jul 10, 10:10 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 4.2 hours before the alert went out and 62 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.

617 
WUUS53 KMPX 110413
SVRMPX
MNC037-049-131-147-110500-
/O.NEW.KMPX.SV.W.0137.110711T0413Z-110711T0500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1113 PM CDT SUN JUL 10 2011

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN DAKOTA COUNTY IN EAST CENTRAL MINNESOTA...
  WESTERN GOODHUE COUNTY IN SOUTHEAST MINNESOTA...
  EASTERN RICE COUNTY IN SOUTH CENTRAL MINNESOTA...
  NORTHEASTERN STEELE COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL MIDNIGHT CDT

* AT 1109 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE
  STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES NORTHEAST
  OF NEW PRAGUE TO ELYSIAN...AND MOVING EAST AT 35 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  FARIBAULT...
  OWATONNA...
  LAKEVILLE...
  CASTLE ROCK...
  FARMINGTON...
  DUNDAS...
  MEDFORD...
  NORTHFIELD...
  RUSKIN...
  RANDOLPH...
  COATES...
  HAMPTON...
  NERSTRAND...
  STANTON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH. 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 4403 9328 4454 9330 4454 9328 4463 9328
      4464 9331 4475 9332 4470 9288 4419 9284
      4419 9304 4400 9304
TIME...MOT...LOC 0413Z 270DEG 29KT 4462 9347 4418 9358
WIND...HAIL 60MPH <.75IN

$$

1 follow-up statement

207 
WWUS53 KMPX 110450
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1150 PM CDT SUN JUL 10 2011

MNC037-049-131-147-110500-
/O.CON.KMPX.SV.W.0137.000000T0000Z-110711T0500Z/
DAKOTA MN-GOODHUE MN-RICE MN-STEELE MN-
1150 PM CDT SUN JUL 10 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
STEELE...EASTERN RICE...WESTERN GOODHUE AND CENTRAL DAKOTA COUNTIES
UNTIL MIDNIGHT CDT...

AT 1146 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
VERMILLION TO OWATONNA...MOVING EAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  CANNON FALLS...KENYON...BOMBAY AND MOLAND.

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.

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 4403 9327 4417 9329 4429 9329 4472 9308
      4470 9288 4419 9284 4419 9304 4400 9304
TIME...MOT...LOC 0450Z 273DEG 45KT 4466 9291 4410 9312
WIND...HAIL 60MPH <.75IN

$$

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, 8:40 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Redwood, Renville, Yellow Medicine	65 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, 11:39 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.