9:20 Tornado Warning Until 10 PM for Polk, Barron, Dunn and St. Croix counties - strong rotation still showing up on Doppler radar, although most communities will see straight-line winds (50-80 mph) and marble to golf ball size hail.

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
911 PM CDT SAT JUL 17 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN POLK COUNTY IN NORTHWEST WISCONSIN...
  SOUTHWESTERN BARRON COUNTY IN NORTHWEST WISCONSIN...
  NORTHERN ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...
  NORTHERN DUNN COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 1000 PM CDT

* AT 910 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 2 MILES SOUTHEAST
  OF WANDEROOS...AND MOVING EAST AT 55 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  AMERY...
  RICE LAKE...
  DERONDA...
  DEER PARK...
  CYLON...
  RANGE...
  CLEAR LAKE...
  FOREST...
  TURTLE LAKE...
  CONNORSVILLE...
  PRAIRIE FARM...
  RIDGELAND...

 

 

9:10 pm. Rotation near Osceola. Doppler is showing plenty of "spin" in the storm pushing into Wisconsin - still capable of a tornado. Residents of Polk and St. Croix, WI should stay alert and be ready to head for the basement.

9:05 pm. Tornado near Scandia, moving east at 40 mph. People living near Center City, Balsam Lake, Amery and Star Prairie should take cover immediately!

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
851 PM CDT SAT JUL 17 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHEASTERN WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...
  SOUTHWESTERN POLK COUNTY IN NORTHWEST WISCONSIN...
  NORTHWESTERN ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 915 PM CDT

* AT 847 PM CDT...LAW ENFORCEMENT REPORTED A TORNADO 3 MILES
  NORTHWEST OF SCANDIA. RADAR SHOWED THE TORNADIC STORM MOVING EAST
  AT 40 MPH.

 

 

9:05 pm. Evidence of severe rotation near Center City - the same "supercell" thunderstorm that dropped tornadoes near Rogers, Anoka, Blaine and Dayton - racing east at 40-50 mph.

* LOCATIONS IN THE WARNING INCLUDE...
  NEW RICHMOND...
  MARINE ON ST CROIX...
  OTISVILLE...
  SHAFER...
  OSCEOLA...
  SOMERSET...
  TAYLORS FALLS...
  DRESSER...
  ST CROIX FALLS...
  STAR PRAIRIE...
  WANDEROOS...
  DERONDA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

 

8:53 pm. Severe Storm Warnings Extended into Western Wisconsin until 9:45 pm. Greatest risk: violent, damaging straight-line winds over 70 mph. Isolated tornadoes were spotted near Rogers, Anoka and Blaine - the threat seems to be shifting from tornadic to more straight-line winds, large hail and torrential rains.

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
844 PM CDT SAT JUL 17 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  POLK COUNTY IN NORTHWEST WISCONSIN...
  ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...
  PIERCE COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 945 PM CDT

* AT 842 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 65 MPH. THESE
  STORMS WERE LOCATED ALONG A LINE EXTENDING FROM CUSHING TO 15 MILES
  WEST OF NORTH HUDSON TO 22 MILES WEST OF NORTH HUDSON TO 37 MILES
  WEST OF NORTH HUDSON...AND MOVING EAST AT 40 MPH.  PENNY SIZE HAIL
  MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IN THE WARNING INCLUDE...
  BALSAM LAKE...
  NEW RICHMOND...
  AMERY...
  RIVER FALLS...
  ELLSWORTH...
  CUSHING...
  ST CROIX FALLS...
  OSCEOLA...
  DRESSER...
  FREDERIC...
  CENTURIA...
  LUCK...

 
8:45. Tornado Warining for North Metro. Reports of a tornado near Blaine, moving east at 55 mph. Tornado warning posted until 9 pm, but Doppler shows a massive "bow echo" forming, capable of widespread 70 mph+ winds - north metro will be hardest hit.
 

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
834 PM CDT SAT JUL 17 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...
  ANOKA COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHERN WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHERN RAMSEY COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 900 PM CDT

* AT 828 PM CDT...THE PUBLIC REPORTED A TORNADO 2 MILES NORTH OF
  BLAINE. RADAR SHOWED THE TORNADIC STORM MOVING EAST AT 55 MPH.


* LOCATIONS IN THE WARNING INCLUDE...
  CENTERVILLE...
  WYOMING...
  FOREST LAKE...
  HUGO...
  CHISAGO CITY...
  SCANDIA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SATURDAY EVENING
FOR SOUTHERN MINNESOTA AND NORTHWESTERN WISCONSIN.

 

 

8:33 pm. Warnings and "VIL Density" Check out the details of the current warnings below - at last report a possible tornado was over Dayton, moving east at 40+ mph. 1-2" diameter hail is likely, along with straight-line winds > 70 mph. Protect property and be ready to move to the basement immediately!

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN RAMSEY...NORTHERN
HENNEPIN...NORTHWESTERN WASHINGTON AND SOUTHERN ANOKA COUNTIES UNTIL
845 PM CDT...

AT 824 PM CDT...THE PUBLIC REPORTED A TORNADO.  THIS TORNADO WAS
LOCATED NEAR ANOKA...OR 15 MILES NORTH OF MINNEAPOLIS...MOVING
EAST AT 55 MPH.


LOCATIONS IMPACTED INCLUDE...
  BLAINE...MOUNDS VIEW...LEXINGTON...CIRCLE PINES...SHOREVIEW...LINO
  LAKES...NORTH OAKS...CENTERVILLE AND FOREST LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
800 PM CDT SAT JUL 17 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...
  EXTREME SOUTHEASTERN SHERBURNE COUNTY IN CENTRAL MINNESOTA...
  EXTREME EAST CENTRAL WRIGHT COUNTY IN CENTRAL MINNESOTA...
  ANOKA COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHERN WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHEASTERN HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...
  RAMSEY COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 900 PM CDT

* AT 756 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING QUARTER SIZE HAIL AND DESTRUCTIVE WINDS IN EXCESS OF 70
  MPH. THIS STORM WAS LOCATED 18 MILES WEST OF DAYTON...OR ABOUT 23
  MILES SOUTHWEST OF PRINCETON...AND MOVING EAST AT 60 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  HAMEL...
  DAYTON...
  MAPLE GROVE...
  PLYMOUTH...
  RAMSEY...
  MEDICINE LAKE...
  OSSEO...
  ANOKA...
  CHAMPLIN...
  NEW HOPE...
  ST FRANCIS...
  CRYSTAL...BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
821 PM CDT SAT JUL 17 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...
  SOUTHERN HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...
  SOUTHERN RAMSEY COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHEASTERN CARVER COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHERN DAKOTA COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHEASTERN SCOTT COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 915 PM CDT

* AT 819 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING QUARTER SIZE HAIL AND DESTRUCTIVE WINDS IN EXCESS OF 70
  MPH. THIS STORM WAS LOCATED 5 MILES NORTHEAST OF WATERTOWN...OR
  ABOUT 24 MILES WEST OF MINNEAPOLIS...AND MOVING EAST AT 45 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  MINNEAPOLIS...
  ST PAUL...
  ST BONIFACIUS...
  MINNETRISTA...
  MOUND...
  ORONO...
  VICTORIA...
  SHOREWOOD...
  EXCELSIOR...
  CHASKA...
  CHANHASSEN...
  WAYZATA...

8:23 pm. Bow Echo - Damaging Straight Line Wind Threat. In addition to a tornado spotted at Rogers shortly after 8 pm Doppler shows a horse-shoe-shaped squall line of severe storms "bowing" east at 40-50 mph. Straight-line winds may top 70-90 mph, capable of significant damage, especially north metro. The greatest risk will be from near Andover, Anoka and Blaine to Shoreview, White Bear Lake and North St. Paul. I believe the NORTH METRO WILL SEE THE WORST OF THIS, with wind damage likely, straight-line, and possible embedded tornadoes as well. Take cover immediately!

 

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN ANOKA COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHWESTERN WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHERN HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHERN RAMSEY COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 845 PM CDT

* AT 806 PM CDT...LAW ENFORCEMENT REPORTED A TORNADO 2 MILES WEST OF
  ROGERS. RADAR SHOWED THE TORNADIC STORM MOVING EAST AT 40 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  DAYTON...
  MAPLE GROVE...
  OSSEO...
  ANOKA...
  CHAMPLIN...
  BROOKLYN PARK...
  ANDOVER...
  COON RAPIDS...
  OAK PARK...
  SPRING LAKE PARK...
  HAM LAKE...
  BLAINE...

 

7:40 pm. Evolving MCS System? Storms are congealing into a massive swarm of straight-line winds and hail, forecast to sweep through the Twin Cities between roughly 8 and 10 pm. Wind damage is possible, and hail will range in size from marble to possibly golf ball size. Take precautions, batten down the hatches. The first "supercell" dropped tornadoes from near Sauk Centre to the southwest suburbs of the Twin Cities (reports of touchdowns around Watertown with significant damage reported). An isolated tornado can't be ruled out, but the main threat now is damaging straight-line winds and large hail. Stay alert - more updates forthcoming.

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Severe/Tornado Risk Lingers Into The Evening

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Recapping Saturday's Atmospheric Madness (cooler, quieter Sunday - slow clearing)