Alert archive / Minnesota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 217, NWS Twin Cities, MN

August 19, 2016Carver County, Hennepin County, Wright County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 19, 2016, 2:21 AM CDT for Carver County, Hennepin County, Wright County, Minnesota. It was in force for 24 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: Aug 19, 2016, 2:21 AM CDT (07:21 UTC)
Expired: Aug 19, 2016, 2:45 AM CDT
In force: 24 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Carver County, MN, Hennepin County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 27 km from the middle of the area, began a volume at 07:19 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
Aug 19, 2:30 AM CDT	TSTM WND DMG	Long Lake, MN	1.5 AND 7 DIAMETER BRANCHES SNAPPED. TIME ESTIMATED FROM RADAR.
Aug 19, 2:35 AM CDT	TSTM WND DMG	Delano, MN	A DOZEN TREES (INCLUDING ONE LARGE OAK), TOPPLED IN DOWNTOWN, AT CENTRAL PARK. TIME ESTIMATED FROM RADAR.
Aug 19, 2:35 AM CDT	TSTM WND DMG	Delano, MN	HOME WINDOW BLOWN IN. TIME ESTIMATED BY RADAR AND NWS EMPLOYEE.
Aug 19, 2:43 AM CDT	TSTM WND DMG	Long Lake, MN	FOUR INCH DIAMETER TREE LIMB SEVERED. TIME ESTIMATED FROM RADAR.
Aug 19, 2:48 AM CDT	TSTM WND DMG	Plymouth, MN	SCAFFOLDING TOPPLED AT DELANO HIGH SCHOOL.
Aug 19, 2:48 AM CDT	TSTM WND DMG	Plymouth, MN	SCAFFOLDING TOPPLED AT DELANO HIGH SCHOOL. TIME ESTIMATED FROM RADAR.
Aug 19, 2:48 AM CDT	TSTM WND DMG	Plymouth, MN	SCAFFOLDING TOPPLED AT PLYMOUTH HIGH SCHOOL.

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 00:00Z, 7.4 hours before the alert went out and 25 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: 185 J/kg
Mixed-layer CIN: -378 J/kg
Mixed-layer LCL: 2171 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 216 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

795 
WUUS53 KMPX 190721
SVRMPX
MNC019-053-171-190745-
/O.NEW.KMPX.SV.W.0217.160819T0721Z-160819T0745Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
221 AM CDT FRI AUG 19 2016

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CARVER COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHWESTERN HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...
  SOUTHEASTERN WRIGHT COUNTY IN CENTRAL MINNESOTA...

* UNTIL 245 AM CDT

* AT 220 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER MAYER...OR
  19 MILES SOUTH OF BUFFALO...MOVING NORTHEAST AT 35 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  DELANO AROUND 230 AM CDT. 
  ORONO AND MAPLE PLAIN AROUND 240 AM CDT. 
  MEDINA AND INDEPENDENCE AROUND 245 AM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
HANOVER... HAMEL...GREENFIELD...LORETTO AND LONG LAKE.

THIS INCLUDES U.S. HIGHWAY 12 BETWEEN MILE MARKERS 130 AND 150.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4498 9379 4493 9401 4504 9401 4510 9389
      4519 9357 4499 9344
TIME...MOT...LOC 0720Z 239DEG 32KT 4490 9383 

HAIL...<.75IN
WIND...60MPH
 
$$

JPC

1 follow-up statement

074 
WWUS53 KMPX 190739
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
239 AM CDT FRI AUG 19 2016

MNC019-190748-
/O.CAN.KMPX.SV.W.0217.000000T0000Z-160819T0745Z/
CARVER MN-
239 AM CDT FRI AUG 19 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CARVER COUNTY IS
CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE...THE SEVERE THUNDERSTORM WARNING FOR
NORTHWEST CARVER COUNTY HAS BEEN CANCELLED.

LAT...LON 4499 9344 4497 9383 4498 9392 4510 9389
      4519 9357
TIME...MOT...LOC 0738Z 234DEG 32KT 4503 9368 

$$

MNC053-171-190745-
/O.CON.KMPX.SV.W.0217.000000T0000Z-160819T0745Z/
HENNEPIN MN-WRIGHT MN-
239 AM CDT FRI AUG 19 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 AM CDT
FOR NORTHWESTERN HENNEPIN AND SOUTHEASTERN WRIGHT COUNTIES...

AT 238 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
INDEPENDENCE... OR 14 MILES SOUTHEAST OF BUFFALO...MOVING NORTHEAST
AT 35 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
NORTHWESTERN HENNEPIN AND SOUTHEASTERN WRIGHT COUNTIES...INCLUDING
THE FOLLOWING LOCATIONS: HANOVER...LONG LAKE...HAMEL...GREENFIELD
AND LORETTO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4499 9344 4497 9383 4498 9392 4510 9389
      4519 9357
TIME...MOT...LOC 0738Z 234DEG 32KT 4503 9368 

HAIL...<.75IN
WIND...60MPH
 
$$

JPC

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 10:39 PM CDT	Special Weather Statement	MPX	Rice	51 min
Aug 18, 11:08 PM CDT	Special Weather Statement	MPX	Yellow Medicine	52 min
Aug 18, 11:32 PM CDT	Special Weather Statement	MPX	Goodhue	43 min
Aug 19, 12:48 AM CDT	Special Weather Statement	MPX	Blue Earth, McLeod, Nicollet, Sibley	57 min
Aug 19, 1:45 AM CDT	Special Weather Statement	MPX	Carver, Le Sueur, McLeod, Rice, Scott, Steele and 1 more	45 min
Aug 19, 1:58 AM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, McLeod	47 min
Aug 19, 2:45 AM CDT	Severe Thunderstorm Warning	MPX	Anoka, Hennepin, Isanti, Ramsey, Sherburne, Washington and 1 more	60 min
Aug 19, 3:01 AM CDT	Severe Thunderstorm Warning	MPX	Washington	44 min
Aug 19, 3:15 AM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Isanti, Washington	45 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2016 Every severe thunderstorm warning in 2016

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.