Alert archive / Minnesota / Tornado Warnings in 2017

Tornado Warning 23, NWS Twin Cities, MN

July 9, 2017Chippewa County, Lac qui Parle County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 9, 2017, 8:21 PM CDT for Chippewa County, Lac qui Parle County, Minnesota. It was in force for 39 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: Jul 9, 2017, 8:21 PM CDT (01:21 UTC)
Expired: Jul 9, 2017, 9:00 PM CDT
In force: 39 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 2.0 in

Counties Chippewa County, MN, Lac qui Parle County, MN

The radar

The Sioux Falls radar (KFSD), 170 km from the middle of the area, began a volume at 01:23 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
Jul 9, 7:05 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 1.4 hours before the alert went out and 189 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: 2237 J/kg
Mixed-layer CIN: -161 J/kg
Mixed-layer LCL: 1841 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 138 m²/s²
0-3 km storm-relative helicity: 260 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 9.3

Open this sounding in Storm Lab

The text

As transmitted.

922 
WFUS53 KMPX 100121
TORMPX
MNC023-073-100200-
/O.NEW.KMPX.TO.W.0023.170710T0121Z-170710T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
821 PM CDT SUN JUL 9 2017

The National Weather Service in The Twin Cities has issued a

* Tornado Warning for...
  Eastern Lac qui Parle County in west central Minnesota...
  Northwestern Chippewa County in west central Minnesota...

* Until 900 PM CDT
    
* At 821 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Appleton, or 21 miles southeast of Ortonville,
  moving south at 35 mph.

  HAZARD...Tornado and hail up to two inches in diameter. 

  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...
  Milan around 830 PM CDT. 
  Dawson around 845 PM CDT. 
  Boyd around 855 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Louisburg, Cerro Gordo and Providence.

This includes the following highways...
 U.S. Highway 212 between mile markers 16 and 32.
 U.S. Highway 59 between mile markers 105 and 107.

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 4519 9621 4519 9612 4515 9604 4515 9589
      4489 9578 4489 9585 4481 9585 4481 9611
TIME...MOT...LOC 0121Z 344DEG 33KT 4515 9607 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

jrb

2 follow-up statements

342 
WWUS53 KMPX 100142
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
842 PM CDT SUN JUL 9 2017

MNC023-073-100200-
/O.CON.KMPX.TO.W.0023.000000T0000Z-170710T0200Z/
Lac qui Parle MN-Chippewa MN-
842 PM CDT SUN JUL 9 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR
SOUTHEASTERN LAC QUI PARLE AND NORTHWESTERN CHIPPEWA COUNTIES...
    
At 841 PM CDT, a confirmed tornado was located near Cerro Gordo, or
15 miles northwest of Montevideo, moving south at 30 mph.

HAZARD...Damaging tornado and two inch hail. 

SOURCE...Weather spotters 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...
  Dawson around 855 PM CDT. 
  Boyd around 900 PM CDT. 

Other locations impacted by this tornadic thunderstorm include Cerro
Gordo and Providence.

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 4514 9613 4515 9604 4515 9589 4489 9578
      4489 9585 4481 9585 4481 9611 4501 9616
TIME...MOT...LOC 0141Z 340DEG 26KT 4504 9600 

TORNADO...OBSERVED
HAIL...2.00IN

$$

jrb

513 
WWUS53 KMPX 100144 CCA
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
844 PM CDT SUN JUL 9 2017

MNC023-073-100200-
/O.COR.KMPX.TO.W.0023.000000T0000Z-170710T0200Z/
Lac qui Parle MN-Chippewa MN-
844 PM CDT SUN JUL 9 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR
SOUTHEASTERN LAC QUI PARLE AND NORTHWESTERN CHIPPEWA COUNTIES...
    
At 844 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Cerro Gordo, or 16 miles northwest of Montevideo,
moving south at 30 mph.

HAZARD...Tornado and two inch 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...
  Dawson around 900 PM CDT. 

Other locations impacted by this tornadic thunderstorm include Cerro
Gordo and Providence.

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 4514 9613 4515 9604 4515 9589 4489 9578
      4489 9585 4481 9585 4481 9611 4501 9616
TIME...MOT...LOC 0141Z 340DEG 26KT 4504 9600 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

jrb

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 7:35 PM CDT	Severe Thunderstorm Warning	MPX	Stevens, Swift	40 min
Jul 9, 7:50 PM CDT	Severe Thunderstorm Warning	MPX	Mille Lacs, Morrison	40 min
Jul 9, 7:51 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Meeker, Renville	39 min
Jul 9, 7:57 PM CDT	Tornado Warning	MPX	Stevens, Swift	33 min
Jul 9, 8:09 PM CDT	Tornado Warning	MPX	Swift	28 min
Jul 9, 8:22 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Morrison	38 min
Jul 9, 8:25 PM CDT	Severe Thunderstorm Warning	MPX	Kanabec, Mille Lacs	40 min
Jul 9, 8:28 PM CDT	Special Weather Statement	MPX	McLeod, Scott	47 min
Jul 9, 8:33 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Renville, Sibley	42 min
Jul 9, 8:54 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Yellow Medicine	66 min
Jul 9, 8:55 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Sherburne	25 min
Jul 9, 8:56 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Le Sueur, Rice, Scott	34 min
Jul 9, 8:58 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Swift	47 min
Jul 9, 9:03 PM CDT	Severe Thunderstorm Warning	MPX	Nicollet, Sibley	42 min
Jul 9, 9:06 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Pope, Stearns	27 min
Jul 9, 9:09 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Swift	20 min
Jul 9, 9:11 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur, Nicollet, Waseca	49 min
Jul 9, 9:16 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Hennepin, Ramsey, Washington	44 min
Jul 9, 9:23 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Rice, Scott	53 min
Jul 9, 9:26 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, Nicollet	49 min
Jul 9, 9:30 PM CDT	Tornado Warning	MPX	Nicollet	30 min
Jul 9, 9:51 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Steele, Waseca	54 min
Jul 9, 10:10 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Nicollet	35 min
Jul 9, 10:19 PM CDT	Tornado Warning	MPX	Blue Earth	41 min
Jul 9, 10:34 PM CDT	Severe Thunderstorm Warning	MPX	Nicollet, Sibley	41 min
Jul 9, 10:41 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn, Steele, Waseca	64 min
Jul 9, 10:51 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Renville, Sibley	39 min
Jul 9, 10:55 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Redwood, Renville	35 min
Jul 9, 11:05 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth	40 min
Jul 9, 11:17 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	43 min
Jul 9, 11:39 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, Nicollet, Watonwan	37 min
Jul 9, 11:55 PM CDT	Severe Thunderstorm Warning	MPX	Redwood	18 min
Jul 10, 12:05 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault, Martin	40 min
Jul 10, 12:45 AM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	30 min
Jul 10, 12:47 AM CDT	Severe Thunderstorm Warning	MPX	Nicollet	26 min
Jul 10, 1:30 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, Watonwan	35 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.