Alert archive / Minnesota / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 336, NWS Twin Cities, MN

August 28, 20075 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 28, 2007, 2:13 AM CDT for 5 counties in Minnesota. It was in force for 62 min. 11 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
Aug 28, 2007, 2:13 AM CDT (07:13 UTC)
Expired
Aug 28, 2007, 3:15 AM CDT
In force
62 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

Counties Dakota County, MN, Hennepin County, MN, Le Sueur County, MN, Rice County, MN, Scott County, MN

The radar

The Minneapolis radar (KMPX), 5 km from the middle of the area, began a volume at 07:16 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
Aug 28, 2:21 AM CDTHAIL 0.75Maple Plain, MN
Aug 28, 2:28 AM CDTTSTM WND DMG1 S Henderson, MNLARGE TREE BLOWN DOWN ONTO HIGHWAY 93.
Aug 28, 2:29 AM CDTHAIL 1Maple Plain, MN
Aug 28, 2:51 AM CDTTSTM WND DMGPrior Lake, MNTREES DOWN. TIME ESTIMATED.
Aug 28, 2:57 AM CDTTSTM WND DMG1 Se Edina, MNROOF DAMAGE TO A TALL APARTMENT BUILDING. PORTION OF ROOF BLEW OFF AND DAMAGED A FEW VEHICLES. OCCURRED ON THE SOUTHEAST SIDE OF EDINA.
Aug 28, 2:59 AM CDTTSTM WND DMGSavage, MNTREES DOWN. TIME ESTIMATED.
Aug 28, 3:03 AM CDTHAIL 0.75Richfield, MN
Aug 28, 3:05 AM CDTTSTM WND DMGBurnsville, MN3 TO 4 INCH TREE LIMBS DOWN, MINOR DAMAGE TO VEHICLE, DAMAGE TO A STOP SIGN AT WEST RIVER HILLS AND CLIFF ROAD. TIME ESTIMATED.
Aug 28, 3:10 AM CDTTSTM WND DMGBloomington, MN8 INCH DIAMETER TREES DOWN, LARGE EVERGREEN TREES UPROOTED. TIME ESTIMATED.
Aug 28, 3:10 AM CDTTSTM WND DMGEdina, MN18 INCH DIAMETER TREE DOWN. TIME ESTIMATED.
Aug 28, 3:15 AM CDTTSTM WND DMGLakeville, MNTREE AND ROOF DAMAGE SOUTH OF 160TH ST. AND FLAGSTAFF AVENUE INTERSECTION

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
Aug 28, 1:56 AM CDTSevere Thunderstorm WatchSPC3 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 7.2 hours before the alert went out and 4 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 2007-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2564 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2007-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 379 square meters per square second.19395878Sfc1 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
2564 J/kg
Mixed-layer CIN
-230 J/kg
Mixed-layer LCL
806 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
379 m²/s²
0-3 km storm-relative helicity
526 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.1

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 280714
SVRMPX
MNC037-053-079-131-139-280815-
/O.NEW.KMPX.SV.W.0336.070828T0713Z-070828T0815Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
213 AM CDT TUE AUG 28 2007

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...
  DAKOTA COUNTY IN EAST CENTRAL MINNESOTA...
  SCOTT COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHERN LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA...
  NORTHERN RICE COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 315 AM CDT

* AT 212 AM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
  THUNDERSTORMS...CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED
  ALONG A LINE EXTENDING FROM 18 MILES WEST OF EXCELSIOR TO 22 MILES
  NORTHWEST OF BELLE PLAINE TO 24 MILES SOUTHWEST OF BELLE PLAINE...
  AND MOVING EAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ROGERS...
  BELLE PLAINE...
  EXCELSIOR...
  MAPLE GROVE...
  PLYMOUTH...
  MINNETONKA...
  THE LAKE MINNETONKA AREA...
  GOLDEN VALLEY...
  NEW PRAGUE...
  HOPKINS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM CDT
TUESDAY MORNING FOR SOUTHEASTERN MINNESOTA.

LAT...LON 4465 9375 4463 9387 4447 9393 4447 9328
      4478 9307 4488 9325 4515 9344 4520 9360
      4513 9372 4507 9378 4490 9378 4490 9353
      4480 9353 4476 9363 4470 9362 4470 9366

$$
3 follow-up statements
000 
WWUS53 KMPX 280731
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
230 AM CDT TUE AUG 28 2007

MNC037-053-079-131-139-280815-
/O.CON.KMPX.SV.W.0336.000000T0000Z-070828T0815Z/
HENNEPIN MN-DAKOTA MN-SCOTT MN-LE SUEUR MN-RICE MN-
230 AM CDT TUE AUG 28 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM CDT 
FOR NORTHERN RICE...NORTHERN LE SUEUR...SCOTT...DAKOTA AND HENNEPIN 
COUNTIES...

AT 225 AM CDT...DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS...CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM MAPLE PLAIN TO EDINA...AND MOVING EAST AT 50 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE WOODLAND...WEBSTER...
WAYZATA...VESELI...ST BENEDICT...ORONO...MOUND...MINNETONKA...
MINNETRISTA AND MEDICINE LAKE.

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN A STORM 
ENTERING NORTHERN LE SUEUR COUNTY. WHILE NOT IMMEDIATELY LIKELY...A 
TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND 
MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT 
OR SMALL INTERIOR ROOM.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 4465 9375 4463 9387 4447 9393 4447 9328
      4478 9307 4488 9325 4515 9344 4520 9360
      4513 9372 4507 9378 4490 9378 4490 9353
      4480 9353 4476 9363 4470 9362 4470 9366

$$
000 
WWUS53 KMPX 280748
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
246 AM CDT TUE AUG 28 2007

MNC037-053-079-131-139-280815-
/O.CON.KMPX.SV.W.0336.000000T0000Z-070828T0815Z/
HENNEPIN MN-DAKOTA MN-SCOTT MN-LE SUEUR MN-RICE MN-
246 AM CDT TUE AUG 28 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM CDT 
FOR NORTHERN RICE...NORTHERN LE SUEUR...SCOTT...DAKOTA AND HENNEPIN 
COUNTIES...

AT 242 AM CDT...DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS...CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM LORETTO TO MOUND TO 6 MILES NORTHWEST OF SHAKOPEE TO 3
MILES WEST OF ST BENEDICT...AND MOVING EAST AT 50 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE 
WOODLAND...WEBSTER...WAYZATA...VESELI...ST BENEDICT...DOWNTOWN 
MINNEAPOLIS...ORONO...MOUND...MINNETONKA...MINNETRISTA AND MENDOTA.

THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE ACROSS CARVER 
COUNTY. THIS IS AN EXTREMELY DANGEROUS SITUATION. SEEK SHELTER NOW 
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS

LAT...LON 4465 9375 4464 9378 4448 9374 4447 9328
      4457 9315 4478 9307 4487 9315 4490 9320
      4501 9325 4512 9338 4512 9359 4507 9378
      4490 9378 4490 9353 4480 9353 4470 9362
      4470 9366

$$
000 
WWUS53 KMPX 280759
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
258 AM CDT TUE AUG 28 2007

MNC079-280808-
/O.CAN.KMPX.SV.W.0336.000000T0000Z-070828T0815Z/
LE SUEUR MN-
258 AM CDT TUE AUG 28 2007

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN LE SUEUR COUNTY IS 
CANCELLED...

THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF 
THE COUNTY.

REPORT ANY SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT FOR RELAY TO 
THE NATIONAL WEATHER SERVICE.

LAT...LON 4470 9363 4450 9341 4450 9328 4450 9305
      4461 9294 4474 9280 4476 9288 4478 9292
      4476 9296 4479 9303 4481 9303 4489 9301
      4490 9306 4494 9310 4489 9317 4490 9320
      4501 9325 4512 9338 4509 9351 4502 9358
      4490 9366 4490 9353 4480 9353

$$

MNC037-053-131-139-280815-
/O.CON.KMPX.SV.W.0336.000000T0000Z-070828T0815Z/
HENNEPIN MN-DAKOTA MN-SCOTT MN-RICE MN-
258 AM CDT TUE AUG 28 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM CDT 
FOR NORTHERN RICE...SCOTT...DAKOTA AND HENNEPIN COUNTIES...

AT 255 AM CDT... QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF
70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM OSSEO
TO MEDICINE LAKE TO EDINA TO 4 MILES SOUTHWEST OF CREDIT RIVER...AND
MOVING EAST AT 55 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE WOODLAND...WEBSTER...
WAYZATA...SUNFISH...RANDOLPH...MINNETONKA...MENDOTA...MEDICINE
LAKE...MARYSTOWN AND EXCELSIOR.

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THE PART OF 
THE THUNDERSTORM LINE NEAR LAKEVILLE. WHILE NOT IMMEDIATELY 
LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT 
QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH 
AS A BASEMENT OR SMALL INTERIOR ROOM.

THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE ACROSS CARVER 
COUNTY. THIS IS A DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A 
STURDY STRUCTURE AND STAY AWAY FROM WINDOWS

LAT...LON 4470 9363 4450 9341 4450 9328 4450 9305
      4461 9294 4474 9280 4476 9288 4478 9292
      4476 9296 4479 9303 4481 9303 4489 9301
      4490 9306 4494 9310 4489 9317 4490 9320
      4501 9325 4512 9338 4509 9351 4502 9358
      4490 9366 4490 9353 4480 9353

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 10:17 PM CDTSevere Thunderstorm WarningMPXIsanti, Kanabec23 min
Aug 27, 10:37 PM CDTSevere Thunderstorm WarningMPXTodd28 min
Aug 28, 12:59 AM CDTSevere Thunderstorm WarningMPXRedwood, Renville, Yellow Medicine61 min
Aug 28, 1:39 AM CDTSevere Thunderstorm WarningMPXCarver, McLeod, Wright51 min
Aug 28, 1:49 AM CDTSevere Thunderstorm WarningMPXSibley56 min
Aug 28, 1:52 AM CDTSevere Thunderstorm WarningMPXChisago53 min
Aug 28, 2:27 AM CDTSevere Thunderstorm WarningMPXCarver40 min
Aug 28, 2:47 AM CDTFlash Flood WarningMPXCarver, Dakota, Hennepin, Scott3 hr
Aug 28, 2:47 AM CDTFlash Flood WarningMPXCarver, Dakota, Hennepin, Ramsey, Scott3 hr
Aug 28, 2:54 AM CDTSevere Thunderstorm WarningMPXRamsey, Washington51 min
Aug 28, 3:11 AM CDTSevere Thunderstorm WarningMPXDakota19 min
Aug 28, 11:44 AM CDTSevere Thunderstorm WarningMPXDakota, Rice46 min
Aug 28, 12:04 PM CDTSevere Thunderstorm WarningMPXGoodhue48 min
Aug 28, 1:09 PM CDTSevere Thunderstorm WarningMPXGoodhue40 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2007Every severe thunderstorm warning in 2007

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.