Alert archive / Minnesota / Tornado Warnings in 2017

Tornado Warning 25, NWS Twin Cities, MN

July 9, 2017Blue Earth County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 9, 2017, 10:19 PM CDT for Blue Earth County, Minnesota. It was in force for 41 min. 2 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: Jul 9, 2017, 10:19 PM CDT (03:19 UTC)
Expired: Jul 9, 2017, 11:00 PM CDT
In force: 41 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

County Blue Earth County, MN

The radar

The Minneapolis radar (KMPX), 94 km from the middle of the area, began a volume at 03:18 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
Jul 9, 10:25 PM CDT	TORNADO	2 Nw Lake Crystal, MN	MULTIPLE SPOTTER REPORTS OF A TORNADO 2 MILES NW OF LAKE CRYSTAL.
Jul 9, 10:35 PM CDT	TORNADO	2 Sw Judson, MN	LAW ENFORCEMENT REPORTING A TORNADO NEAR THE INTERSECTION OF CR 20 & MN HWY 68.

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
Jul 9, 7:05 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.3 hours before the alert went out and 92 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: 627 J/kg
Mixed-layer CIN: -187 J/kg
Mixed-layer LCL: 1764 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 222 m²/s²
0-3 km storm-relative helicity: 278 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.6

Open this sounding in Storm Lab

The text

As transmitted.

826 
WFUS53 KMPX 100319
TORMPX
MNC013-100400-
/O.NEW.KMPX.TO.W.0025.170710T0319Z-170710T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
1019 PM CDT SUN JUL 9 2017

The National Weather Service in The Twin Cities has issued a

* Tornado Warning for...
  Northwestern Blue Earth County in south central Minnesota...

* Until 1100 PM CDT
    
* At 1019 PM CDT, a severe thunderstorm capable of producing a
  tornado was located near Judson, or 11 miles southeast of New Ulm,
  moving south at 25 mph.

  HAZARD...Tornado and golf 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...
  Lake Crystal around 1035 PM CDT. 

Other locations impacted by this tornadic thunderstorm include Judson
and Garden City.

This includes U.S. Highway 169 between mile markers 40 and 48.
 
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 4403 9434 4422 9437 4426 9437 4426 9433
      4421 9424 4422 9422 4420 9422 4420 9414
      4405 9406
TIME...MOT...LOC 0319Z 342DEG 20KT 4419 9429 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

jrb

5 follow-up statements

485 
WWUS53 KMPX 100330
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1030 PM CDT SUN JUL 9 2017

MNC013-100400-
/O.CON.KMPX.TO.W.0025.000000T0000Z-170710T0400Z/
Blue Earth MN-
1030 PM CDT SUN JUL 9 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR
NORTHWESTERN BLUE EARTH COUNTY...
    
At 1029 PM CDT, a confirmed tornado was located over Lake Crystal, or
13 miles west of Mankato, moving south at 25 mph.

HAZARD...Damaging tornado and golf ball size hail. 

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...
  Lake Crystal around 1035 PM CDT. 

Other locations impacted by this tornadic thunderstorm include Judson
and Garden City.

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 4403 9434 4418 9436 4422 9431 4421 9424
      4422 9422 4420 9422 4420 9414 4405 9406
TIME...MOT...LOC 0329Z 342DEG 20KT 4413 9426 

TORNADO...OBSERVED
HAIL...1.75IN

$$

jrb

772 
WWUS53 KMPX 100333
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1033 PM CDT SUN JUL 9 2017

MNC013-100400-
/O.CON.KMPX.TO.W.0025.000000T0000Z-170710T0400Z/
Blue Earth MN-
1033 PM CDT SUN JUL 9 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR
NORTHWESTERN BLUE EARTH COUNTY...
    
At 1033 PM CDT, a confirmed tornado was located near Judson, or 12
miles west of Mankato, moving southeast at 15 mph.

HAZARD...Damaging tornado and golf ball size hail. 

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...
  Lake Crystal around 1045 PM CDT. 

Other locations impacted by this tornadic thunderstorm include Judson
and Garden City.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4403 9434 4417 9434 4422 9431 4421 9424
      4422 9422 4420 9422 4420 9414 4405 9406
TIME...MOT...LOC 0333Z 332DEG 15KT 4416 9424 

TORNADO...OBSERVED
HAIL...1.75IN

$$

jrb

312 
WWUS53 KMPX 100338
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1038 PM CDT SUN JUL 9 2017

MNC013-100400-
/O.CON.KMPX.TO.W.0025.000000T0000Z-170710T0400Z/
Blue Earth MN-
1038 PM CDT SUN JUL 9 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR
NORTHWESTERN BLUE EARTH COUNTY...
    
At 1038 PM CDT, a confirmed tornado was located over Judson, or 11
miles west of Mankato, moving southeast at 15 mph.

HAZARD...Damaging tornado and golf ball size hail. 

SOURCE...Law enforcement 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...
  Lake Crystal around 1050 PM CDT. 

Other locations impacted by this tornadic thunderstorm include Judson
and Garden City.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4403 9429 4416 9430 4420 9428 4420 9414
      4405 9406
TIME...MOT...LOC 0338Z 316DEG 11KT 4416 9422 

TORNADO...OBSERVED
HAIL...1.75IN

$$

jrb

400 
WWUS53 KMPX 100346
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1046 PM CDT SUN JUL 9 2017

MNC013-100400-
/O.CON.KMPX.TO.W.0025.000000T0000Z-170710T0400Z/
Blue Earth MN-
1046 PM CDT SUN JUL 9 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR
NORTHWESTERN BLUE EARTH COUNTY...
    
At 1046 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Lake Crystal, or 10 miles west of Mankato, moving
south at 25 mph.

HAZARD...Tornado and quarter 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 tornadic thunderstorm will remain over mainly rural areas of
northwestern Blue Earth County, including the following locations:
Garden City.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4403 9424 4415 9424 4418 9418 4416 9412
      4405 9406
TIME...MOT...LOC 0346Z 342DEG 20KT 4412 9420 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

jrb

957 
WWUS53 KMPX 100358
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1058 PM CDT SUN JUL 9 2017

MNC013-100408-
/O.EXP.KMPX.TO.W.0025.000000T0000Z-170710T0400Z/
Blue Earth MN-
1058 PM CDT SUN JUL 9 2017

...THE TORNADO WARNING FOR NORTHWESTERN BLUE EARTH COUNTY WILL EXPIRE
AT 1100 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 100 AM CDT for south central
Minnesota.

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

LAT...LON 4403 9424 4415 9424 4418 9418 4416 9412
      4405 9406
TIME...MOT...LOC 0358Z 342DEG 20KT 4406 9417 

$$

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, 8:21 PM CDT	Tornado Warning	MPX	Chippewa, Lac qui Parle	39 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, 10:34 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.