Alert archive / Minnesota / Tornado Warnings in 2019

Tornado Warning 40, NWS Twin Cities, MN

August 10, 2019Martin County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Aug 10, 2019, 6:30 PM CDT for Martin County, Minnesota. It was in force for 45 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: Aug 10, 2019, 6:30 PM CDT (23:30 UTC)
Expired: Aug 10, 2019, 7:15 PM CDT
In force: 45 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Martin County, MN

The radar

The Minneapolis radar (KMPX), 155 km from the middle of the area, began a volume at 23:34 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
Aug 10, 6:36 PM CDT	TORNADO	4 Se Fairmont, MN	SPOTTER 5 MILES SE OF FAIRMONT, MN REPORTED A VERY BRIEF TOUCHDOWN 1 MILE TO HIS NNW.
Aug 10, 6:40 PM CDT	FUNNEL CLOUD	4 Se Fairmont, MN	STORM CHASER REPORTED ROPE FUNNEL MOVING SOUTHEAST.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.5 hours before the alert went out and 154 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: 1399 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 78 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

574 
WFUS53 KMPX 102330
TORMPX
MNC091-110015-
/O.NEW.KMPX.TO.W.0040.190810T2330Z-190811T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
630 PM CDT Sat Aug 10 2019

The National Weather Service in The Twin Cities has issued a

* Tornado Warning for...
  Southeastern Martin County in south central Minnesota...

* Until 715 PM CDT.
    
* At 629 PM CDT, a severe thunderstorm capable of producing a tornado
  was located just east Fairmont, moving east at 15 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 tornadic thunderstorm will remain over mainly rural areas of
  southeastern Martin County, including the following locations...
  East Chain.

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 4358 9446 4365 9443 4364 9425 4350 9425
      4350 9428
TIME...MOT...LOC 2329Z 289DEG 11KT 4360 9442 

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

$$

JRB

3 follow-up statements

483 
WWUS53 KMPX 102347
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
647 PM CDT Sat Aug 10 2019

MNC091-110015-
/O.CON.KMPX.TO.W.0040.000000T0000Z-190811T0015Z/
Martin MN-
647 PM CDT Sat Aug 10 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR
SOUTHEASTERN MARTIN COUNTY...
        
At 646 PM CDT, a severe thunderstorm capable of producing a tornado
was located southest of Fairmont, moving east at 15 mph.

HAZARD...Tornado.

SOURCE...Weather spotters reported a funnel cloud.

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.

Locations impacted include...
East Chain and rural southeast Martin County.

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 4357 9443 4364 9441 4364 9425 4350 9425
      4350 9428
TIME...MOT...LOC 2346Z 289DEG 11KT 4358 9436 

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

$$

JRB

771 
WWUS53 KMPX 102358
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
658 PM CDT Sat Aug 10 2019

MNC091-110015-
/O.CON.KMPX.TO.W.0040.000000T0000Z-190811T0015Z/
Martin MN-
658 PM CDT Sat Aug 10 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR
SOUTHEASTERN MARTIN COUNTY...
    
At 657 PM CDT, a confirmed tornado was located 8 miles northeast of
Iowa Lake, or 8 miles southeast of Fairmont, moving east at 15 mph.

HAZARD...Observed tornado.

SOURCE...Weather spotters confirmed a brief tornado earlier.

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.

Locations impacted include...
East Chain.

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 4356 9440 4362 9438 4361 9425 4350 9425
      4350 9428
TIME...MOT...LOC 2357Z 289DEG 11KT 4357 9431 

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

$$

JRB

151 
WWUS53 KMPX 110011
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
711 PM CDT Sat Aug 10 2019

MNC091-110020-
/O.EXP.KMPX.TO.W.0040.000000T0000Z-190811T0015Z/
Martin MN-
711 PM CDT Sat Aug 10 2019

...THE TORNADO WARNING FOR SOUTHEASTERN MARTIN COUNTY WILL EXPIRE AT
715 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.

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 4356 9440 4362 9438 4361 9425 4350 9425
      4350 9428
TIME...MOT...LOC 0010Z 289DEG 11KT 4356 9427 

$$

JRB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 5:48 PM CDT	Special Weather Statement	MPX	Martin	42 min
Aug 10, 5:51 PM CDT	Tornado Warning	MPX	Martin	39 min

Nearby

Tornado Warnings in Minnesota, 2019 Every tornado warning in 2019 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.