Alert archive / Minnesota / Tornado Warnings in 2017

Tornado Warning 2, NWS Twin Cities, MN

March 6, 2017Sherburne County, Wright County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Mar 6, 2017, 5:26 PM CST for Sherburne County, Wright County, Minnesota. It was in force for 20 min. 6 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
Mar 6, 2017, 5:26 PM CST (23:26 UTC)
Expired
Mar 6, 2017, 5:46 PM CST
In force
20 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.5 in

Counties Sherburne County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 61 km from the middle of the area, began a volume at 23:29 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
Mar 6, 5:39 PM CSTTORNADO2 Ese Orrock, MNEF1 TORNADO SURVEYED IN SHERBURNE COUNTY. PEAK WINDS 100 TO 110 MPH. PATH LENGTH 8.9 MILES.
Mar 6, 5:41 PM CSTTSTM WND DMG3 E Orrock, MNTREES DOWN, POWER LINES DOWN, AND PART OF ROOF MISSING.
Mar 6, 5:44 PM CSTHAIL 0.751 W Monticello, MN.
Mar 6, 5:44 PM CSTHAIL 0.751 Wsw Monticello, MN.
Mar 6, 5:46 PM CSTHAIL 0.51 W Big Lake, MN.
Mar 6, 5:52 PM CSTTSTM WND DMGZimmerman, MNLARGE OAK TREES FALLEN AND HOUSING PIECES WRAPPED AROUND TREES. POSSIBLE TORNADO DAMAGE.

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
Mar 6, 2:43 PM CSTTornado WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.4 hours before the alert went out and 61 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 2017-03-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2017-03-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 401 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
622 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
401 m²/s²
0-3 km storm-relative helicity
365 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

311 
WFUS53 KMPX 062326
TORMPX
MNC141-171-070000-
/O.NEW.KMPX.TO.W.0002.170306T2326Z-170307T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
526 PM CST MON MAR 6 2017

The National Weather Service in The Twin Cities has issued a

* Tornado Warning for...
  Northeastern Wright County in central Minnesota...
  Southeastern Sherburne County in central Minnesota...

* Until 600 PM CST
    
* At 525 PM CST, a severe thunderstorm capable of producing a tornado
  was located over Monticello, moving northeast at 35 mph.

  HAZARD...Tornado and ping pong ball 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...
  Monticello around 530 PM CST. 
  Big Lake around 540 PM CST. 
  Elk River and Zimmerman around 550 PM CST. 
  St. Francis around 600 PM CST. 

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 4550 9351 4537 9350 4530 9351 4523 9383
      4535 9391 4553 9354
TIME...MOT...LOC 2325Z 237DEG 29KT 4528 9384 

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$
2 follow-up statements
282 
WWUS53 KMPX 062335
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
535 PM CST MON MAR 6 2017

MNC171-062344-
/O.CAN.KMPX.TO.W.0002.000000T0000Z-170307T0000Z/
Wright MN-
535 PM CST MON MAR 6 2017

...THE TORNADO WARNING FOR NORTHEASTERN WRIGHT COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 1000 PM CST for central and
east central Minnesota.

LAT...LON 4550 9351 4538 9351 4537 9350 4530 9352
      4529 9356 4530 9357 4529 9358 4530 9368
      4530 9377 4535 9388 4536 9388 4553 9354
TIME...MOT...LOC 2334Z 232DEG 30KT 4535 9376 

$$

MNC141-070000-
/O.CON.KMPX.TO.W.0002.000000T0000Z-170307T0000Z/
Sherburne MN-
535 PM CST MON MAR 6 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CST FOR
SOUTHEASTERN SHERBURNE COUNTY...
    
At 534 PM CST, a severe thunderstorm capable of producing a tornado
was located over Big Lake, or 12 miles northeast of Buffalo, moving
northeast at 35 mph.

HAZARD...Tornado and ping pong ball 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...
  Elk River around 545 PM CST. 
  Zimmerman around 550 PM CST. 

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 4550 9351 4538 9351 4537 9350 4530 9352
      4529 9356 4530 9357 4529 9358 4530 9368
      4530 9377 4535 9388 4536 9388 4553 9354
TIME...MOT...LOC 2334Z 232DEG 30KT 4535 9376 

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$
313 
WWUS53 KMPX 062346
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
546 PM CST MON MAR 6 2017

MNC141-062356-
/O.CAN.KMPX.TO.W.0002.000000T0000Z-170307T0000Z/
Sherburne MN-
546 PM CST MON MAR 6 2017

...THE TORNADO WARNING FOR SOUTHEASTERN SHERBURNE COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.

A tornado watch remains in effect until 1000 PM CST for central and
east central Minnesota.

Remember, a Tornado Warning still remains in effect for northeast 
Sherburne near Princeton.

LAT...LON 4550 9351 4538 9351 4537 9350 4530 9352
      4529 9356 4530 9357 4529 9358 4530 9368
      4530 9377 4535 9388 4536 9388 4553 9354
TIME...MOT...LOC 2344Z 237DEG 29KT 4540 9364 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 6, 4:04 AM CSTWind AdvisoryMPXAnoka, Benton, Blue Earth, Brown, Carver, Chippewa and 36 more60 hr
Mar 6, 3:47 PM CSTSevere Thunderstorm WarningMPXRedwood, Renville, Sibley43 min
Mar 6, 4:10 PM CSTSevere Thunderstorm WarningMPXBlue Earth, Brown, Watonwan35 min
Mar 6, 4:28 PM CSTSevere Thunderstorm WarningMPXBenton, Morrison, Stearns47 min
Mar 6, 4:32 PM CSTSevere Thunderstorm WarningMPXFaribault, Martin43 min
Mar 6, 4:41 PM CSTSevere Thunderstorm WarningMPXMcLeod, Meeker, Wright34 min
Mar 6, 4:50 PM CSTTornado WarningMPXWright25 min
Mar 6, 4:54 PM CSTSevere Thunderstorm WarningMPXFaribault, Freeborn21 min
Mar 6, 5:09 PM CSTSevere Thunderstorm WarningMPXBlue Earth, Faribault, Freeborn, Steele, Waseca36 min
Mar 6, 5:11 PM CSTSevere Thunderstorm WarningMPXSherburne, Wright34 min
Mar 6, 5:42 PM CSTSevere Thunderstorm WarningMPXFreeborn, Steele, Waseca33 min
Mar 6, 5:44 PM CSTTornado WarningMPXIsanti, Mille Lacs, Sherburne31 min

Nearby

Tornado Warnings in Minnesota, 2017Every tornado warning in 2017Tornadoes in 2017

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.