Alert archive / Minnesota / Tornado Warnings in 2019

Tornado Warning 52, NWS Twin Cities, MN

September 21, 2019Kanabec County, Mille Lacs County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Sep 21, 2019, 4:06 PM CDT for Kanabec County, Mille Lacs County, Minnesota. It was in force for 21 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 21, 2019, 4:06 PM CDT (21:06 UTC)
Expired
Sep 21, 2019, 4:27 PM CDT
In force
21 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Kanabec County, MN, Mille Lacs County, MN

The radar

The Duluth radar (KDLH), 125 km from the middle of the area, began a volume at 21:07 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.1 hours before the alert went out and 144 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 12:00Z on 2019-09-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 331 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2019-09-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 255 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
331 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
671 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
255 m²/s²
0-3 km storm-relative helicity
247 m²/s²
Significant tornado parameter
0.4
Supercell composite
5.6

Open this sounding in Storm Lab

The text

As transmitted.

391 
WFUS53 KMPX 212106
TORMPX
MNC065-095-212145-
/O.NEW.KMPX.TO.W.0052.190921T2106Z-190921T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
406 PM CDT Sat Sep 21 2019

The National Weather Service in The Twin Cities has issued a

* Tornado Warning for...
  North central Kanabec County in east central Minnesota...
  Northeastern Mille Lacs County in east central Minnesota...

* Until 445 PM CDT.
    
* At 406 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Onamia, or 16 miles south of Mille Lacs Lake,
  moving northeast at 30 mph.

  HAZARD...Tornado.

  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...
  Wahkon around 420 PM CDT.
  Isle around 425 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Bayview.

This includes U.S. Highway 169 between mile markers 209 and 218.
 
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 4615 9343 4615 9322 4600 9366 4606 9373
      4625 9356 4624 9343
TIME...MOT...LOC 2106Z 228DEG 26KT 4607 9366 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

JRB
2 follow-up statements
477 
WWUS53 KMPX 212112
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
412 PM CDT Sat Sep 21 2019

MNC065-095-212145-
/O.CON.KMPX.TO.W.0052.000000T0000Z-190921T2145Z/
Kanabec MN-Mille Lacs MN-
412 PM CDT Sat Sep 21 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR NORTH
CENTRAL KANABEC AND NORTHEASTERN MILLE LACS COUNTIES...
    
At 411 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Onamia, or 15 miles south of Mille Lacs Lake, moving
northeast at 30 mph.

HAZARD...Tornado.

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...
  Wahkon around 420 PM CDT.
  Isle around 425 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Bayview.

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 4615 9343 4615 9322 4601 9362 4607 9368
      4625 9350 4624 9343
TIME...MOT...LOC 2111Z 228DEG 26KT 4610 9361 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

JRB
546 
WWUS53 KMPX 212127
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
427 PM CDT Sat Sep 21 2019

MNC065-095-212135-
/O.CAN.KMPX.TO.W.0052.000000T0000Z-190921T2145Z/
Kanabec MN-Mille Lacs MN-
427 PM CDT Sat Sep 21 2019

...THE TORNADO WARNING FOR NORTH CENTRAL KANABEC AND NORTHEASTERN
MILLE LACS COUNTIES IS CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
The Twin Cities.

Remember, a Severe Thunderstorm Warning still remains in effect for 
Northwestern Kanabec County and Northern Mille Lacs County until 445 
PM CDT.

LAT...LON 4615 9343 4615 9322 4601 9362 4607 9368
      4625 9350 4624 9343
TIME...MOT...LOC 2124Z 228DEG 26KT 4617 9350 

$$

JPC

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 21, 10:44 AM CDTSpecial Weather StatementMPXKanabec16 min
Sep 21, 3:11 PM CDTSpecial Weather StatementMPXBenton, Morrison94 min
Sep 21, 3:36 PM CDTTornado WarningMPXBenton, Sherburne, Stearns29 min
Sep 21, 4:00 PM CDTSevere Thunderstorm WarningMPXKanabec, Mille Lacs45 min
Sep 21, 4:35 PM CDTSpecial Weather StatementMPXMille Lacs55 min

Nearby

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