Alert archive / Minnesota / Tornado Warnings in 2017

Tornado Warning 13, NWS Twin Cities, MN

May 17, 2017Blue Earth County, Nicollet County, Minnesota

NWS Twin Cities, MN issued this tornado warning at May 17, 2017, 4:11 PM CDT for Blue Earth County, Nicollet County, Minnesota. It was in force for 19 min. 1 report 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: May 17, 2017, 4:11 PM CDT (21:11 UTC)
Expired: May 17, 2017, 4:30 PM CDT
In force: 19 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Blue Earth County, MN, Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 80 km from the middle of the area, began a volume at 21:16 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.

What was reported inside it

Time	Report	Where	Remark
May 17, 4:12 PM CDT	TORNADO	3 Ssw Skyline, MN	VIA EMERGENCY MANAGER FROM PUBLIC.

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.

Issued	Product	Office	Lasted
May 17, 2:53 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.2 hours before the alert went out and 79 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 737 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: -70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

885 
WFUS53 KMPX 172111
TORMPX
MNC013-103-172130-
/O.NEW.KMPX.TO.W.0013.170517T2111Z-170517T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
411 PM CDT WED MAY 17 2017

The National Weather Service in The Twin Cities has issued a

* Tornado Warning for...
  North central Blue Earth County in south central Minnesota...
  Southeastern Nicollet County in south central Minnesota...

* Until 430 PM CDT
    
* At 411 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Skyline, or near Mankato, moving north at 45 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...
  Mankato around 415 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Skyline.

This includes the following highways...
 U.S. Highway 14 between mile markers 122 and 135.
 U.S. Highway 169 between mile markers 48 and 59.

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 4427 9415 4428 9402 4426 9403 4425 9401
      4424 9402 4423 9391 4407 9397 4406 9409
TIME...MOT...LOC 2111Z 181DEG 39KT 4412 9402 

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

$$

SPD

1 follow-up statement

715 
WWUS53 KMPX 172114
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
414 PM CDT WED MAY 17 2017

MNC013-103-172130-
/O.CON.KMPX.TO.W.0013.000000T0000Z-170517T2130Z/
Blue Earth MN-Nicollet MN-
414 PM CDT WED MAY 17 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR NORTH
CENTRAL BLUE EARTH AND SOUTHEASTERN NICOLLET COUNTIES...
    
At 414 PM CDT, a confirmed tornado was located over Skyline, or near
Mankato, moving north at 40 mph.

HAZARD...Damaging tornado. 

SOURCE...Public 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. 

This tornado will be near...
  Mankato around 420 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Skyline.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 4423 9391 4407 9397 4406 9409 4427 9415
      4428 9402 4426 9403 4425 9401 4424 9402
TIME...MOT...LOC 2114Z 179DEG 33KT 4410 9403 

TORNADO...OBSERVED
HAIL...<.75IN

$$

SPD

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 9:42 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	48 min
May 17, 2:34 PM CDT	Special Weather Statement	MPX	Freeborn	26 min
May 17, 2:44 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn	31 min
May 17, 2:56 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn	34 min
May 17, 3:03 PM CDT	Special Weather Statement	MPX	Martin, Watonwan	42 min
May 17, 3:08 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn, Steele	24 min
May 17, 3:10 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault	35 min
May 17, 3:23 PM CDT	Special Weather Statement	MPX	Martin	22 min
May 17, 3:30 PM CDT	Severe Thunderstorm Warning	MPX	Steele	30 min
May 17, 3:42 PM CDT	Tornado Warning	MPX	Blue Earth	33 min
May 17, 3:55 PM CDT	Tornado Warning	MPX	Steele	21 min
May 17, 4:00 PM CDT	Severe Thunderstorm Warning	MPX	Rice, Steele	30 min
May 17, 4:03 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, Nicollet	27 min
May 17, 5:00 PM CDT	Special Weather Statement	MPX	Nicollet	30 min
May 17, 5:01 PM CDT	Flash Flood Warning	MPX	Blue Earth, Le Sueur, Nicollet	119 min
May 17, 5:13 PM CDT	Special Weather Statement	MPX	Anoka	32 min
May 17, 5:45 PM CDT	Special Weather Statement	MPX	Carver	30 min
May 17, 5:50 PM CDT	Special Weather Statement	MPX	Chisago	25 min
May 17, 6:04 PM CDT	Special Weather Statement	MPX	Hennepin, Rice, Scott, Wright	56 min
May 17, 6:08 PM CDT	Special Weather Statement	MPX	Martin	37 min
May 17, 6:11 PM CDT	Special Weather Statement	MPX	Chisago	64 min
May 17, 6:45 PM CDT	Special Weather Statement	MPX	Sherburne	60 min

Nearby

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