Alert archive / Minnesota / Tornado Warnings in 2019

Tornado Warning 49, NWS Twin Cities, MN

September 2, 2019Hennepin County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Sep 2, 2019, 10:13 PM CDT for Hennepin County, Minnesota. It was in force for 19 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: Sep 2, 2019, 10:13 PM CDT (03:13 UTC)
Expired: Sep 2, 2019, 10:32 PM CDT
In force: 19 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

County Hennepin County, MN

The radar

The Minneapolis radar (KMPX), 14 km from the middle of the area, began a volume at 03:16 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Sep 2, 6:57 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.2 hours before the alert went out and 15 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: 44 J/kg
Mixed-layer CIN: -273 J/kg
Mixed-layer LCL: 957 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 380 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

As transmitted.

248 
WFUS53 KMPX 030313
TORMPX
MNC053-030345-
/O.NEW.KMPX.TO.W.0049.190903T0313Z-190903T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
1013 PM CDT Mon Sep 2 2019

The National Weather Service in The Twin Cities has issued a

* Tornado Warning for...
  Southwestern Hennepin County in east central Minnesota...

* Until 1045 PM CDT.
    
* At 1013 PM CDT, a severe thunderstorm capable of producing a
  tornado was located over Maple Plain, or 16 miles southeast of
  Buffalo, moving east at 30 mph.

  HAZARD...Tornado and half dollar size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Medina around 1020 PM CDT.
  Excelsior around 1025 PM CDT.
  Wayzata around 1030 PM CDT.
  Eden Prairie around 1035 PM CDT.
  Plymouth and Minnetonka around 1040 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Medicine Lake, Long Lake, Greenwood, Deephaven, Woodland and
Shorewood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4504 9340 4488 9344 4491 9376 4502 9376
TIME...MOT...LOC 0313Z 271DEG 28KT 4497 9369 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

LS

2 follow-up statements

219 
WWUS53 KMPX 030327
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1027 PM CDT Mon Sep 2 2019

MNC053-030345-
/O.CON.KMPX.TO.W.0049.000000T0000Z-190903T0345Z/
Hennepin MN-
1027 PM CDT Mon Sep 2 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT FOR CENTRAL
HENNEPIN COUNTY...
        
At 1026 PM CDT, a radar confirmed tornado was located over Wayzata, 
or 9 miles west of Minneapolis, moving east at 35 mph.

HAZARD...Damaging tornado and half dollar size hail.

SOURCE...Radar confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Plymouth, Eden Prairie, Minnetonka, Mound, Orono, Medina, Wayzata,
Excelsior, Shorewood, Deephaven, Long Lake and Greenwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest 
floor of a sturdy building. Avoid windows. If you are outdoors, in a 
mobile home, or in a vehicle, move to the closest substantial 
shelter and protect yourself from flying debris.

&&

LAT...LON 4504 9340 4488 9344 4490 9364 4503 9360
TIME...MOT...LOC 0326Z 270DEG 32KT 4496 9345 

TORNADO...OBSERVED
HAIL...1.25IN

$$

LS

228 
WWUS53 KMPX 030332
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1032 PM CDT Mon Sep 2 2019

MNC053-030341-
/O.CAN.KMPX.TO.W.0049.000000T0000Z-190903T0345Z/
Hennepin MN-
1032 PM CDT Mon Sep 2 2019

...THE TORNADO WARNING FOR CENTRAL HENNEPIN COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened, and no longer 
appears capable of producing a tornado. Therefore, the warning has 
been cancelled.

Remember, a Severe Thunderstorm Warning still remains in effect 
until 1115 PM CDT.

LAT...LON 4504 9340 4488 9344 4490 9364 4503 9360
TIME...MOT...LOC 0328Z 271DEG 28KT 4496 9339 

$$

LS

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 2, 7:37 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Pope, Stevens	53 min
Sep 2, 8:01 PM CDT	Special Weather Statement	MPX	Todd	59 min
Sep 2, 8:20 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Kandiyohi, Pope, Stearns, Stevens, Swift and 1 more	55 min
Sep 2, 8:51 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Swift	39 min
Sep 2, 8:56 PM CDT	Special Weather Statement	MPX	Morrison	64 min
Sep 2, 9:08 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, McLeod, Meeker, Sherburne, Stearns, Wright	52 min
Sep 2, 9:19 PM CDT	Tornado Warning	MPX	Meeker	26 min
Sep 2, 9:28 PM CDT	Special Weather Statement	MPX	Benton, Isanti, Kanabec, Mille Lacs	62 min
Sep 2, 9:37 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Isanti, Kanabec, Mille Lacs, Sherburne	38 min
Sep 2, 9:46 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Carver, Hennepin, Isanti, McLeod, Ramsey and 3 more	59 min
Sep 2, 10:09 PM CDT	Special Weather Statement	MPX	Chisago	66 min
Sep 2, 10:22 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Hennepin, Le Sueur, Ramsey, Rice, Scott and 1 more	53 min
Sep 2, 10:44 PM CDT	Tornado Warning	MPX	Le Sueur, Rice	31 min
Sep 2, 11:07 PM CDT	Special Weather Statement	MPX	Goodhue, Rice	53 min
Sep 2, 11:13 PM CDT	Special Weather Statement	MPX	Rice	32 min
Sep 2, 11:48 PM CDT	Special Weather Statement	MPX	Steele	57 min

Nearby

Tornado Warnings in Minnesota, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.