Alert archive / Minnesota / Tornado Warnings in 2020

Tornado Warning 29, NWS Twin Cities, MN

July 25, 2020Sibley County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 25, 2020, 6:30 PM CDT for Sibley County, Minnesota. It was in force for 30 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 25, 2020, 6:30 PM CDT (23:30 UTC)
Expired: Jul 25, 2020, 7:00 PM CDT
In force: 30 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Sibley County, MN

The radar

The Minneapolis radar (KMPX), 60 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

Time	Report	Where	Remark
Jul 25, 6:32 PM CDT	TORNADO	1 Nw Gaylord, MN	JUST MADE GROUND CONTACT. STILL ON GROUND.
Jul 25, 6:38 PM CDT	TORNADO	3 Nne Gaylord, MN	SPOTTER REPORTED A FUNNEL CLOUD THAT TOUCHED DOWN BRIEFLY.

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 57 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: 737 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 1051 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

As transmitted.

434 
WFUS53 KMPX 252330
TORMPX
MNC143-260000-
/O.NEW.KMPX.TO.W.0029.200725T2330Z-200726T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
630 PM CDT Sat Jul 25 2020

The National Weather Service in The Twin Cities has issued a

* Tornado Warning for...
  Central Sibley County in central Minnesota...

* Until 700 PM CDT.

* At 630 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Gaylord, or 21 miles northeast of New Ulm, moving
  east at 20 mph.

  HAZARD...Tornado.

  SOURCE...Weather spotters reported 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.

* This dangerous storm will be near...
  Arlington around 655 PM CDT.

# 

# 

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 4454 9430 4459 9433 4468 9413 4458 9405
TIME...MOT...LOC 2330Z 248DEG 17KT 4458 9424 

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

$$

CTG

3 follow-up statements

502 
WWUS53 KMPX 252336
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
636 PM CDT Sat Jul 25 2020

MNC143-260000-
/O.CON.KMPX.TO.W.0029.000000T0000Z-200726T0000Z/
Sibley MN-
636 PM CDT Sat Jul 25 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR CENTRAL
SIBLEY COUNTY...
    
At 636 PM CDT, a confirmed tornado was located over Gaylord, or 22
miles southeast of Hutchinson, moving east at 20 mph.

HAZARD...Damaging tornado.

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...
  Arlington around 655 PM CDT.

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 4455 9426 4460 9430 4468 9413 4458 9405
TIME...MOT...LOC 2336Z 248DEG 17KT 4459 9420 

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

$$

CTG

606 
WWUS53 KMPX 252345
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
645 PM CDT Sat Jul 25 2020

MNC143-260000-
/O.CON.KMPX.TO.W.0029.000000T0000Z-200726T0000Z/
Sibley MN-
645 PM CDT Sat Jul 25 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR CENTRAL
SIBLEY COUNTY...
    
At 644 PM CDT, a confirmed tornado was located near Arlington, or 22
miles southeast of Hutchinson, moving east at 20 mph.

HAZARD...Damaging tornado.

SOURCE...Weather spotters confirmed tornado 3 miles north-northeast 
         of Gaylord at 638 PM CDT. Additional funnels have been 
         observed since.

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...
  Arlington around 655 PM CDT.

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 4456 9422 4462 9426 4468 9413 4458 9405
TIME...MOT...LOC 2344Z 248DEG 17KT 4461 9415 

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

$$

CTG

008 
WWUS53 KMPX 252356
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
656 PM CDT Sat Jul 25 2020

MNC143-260005-
/O.EXP.KMPX.TO.W.0029.000000T0000Z-200726T0000Z/
Sibley MN-
656 PM CDT Sat Jul 25 2020

...THE TORNADO WARNING FOR CENTRAL SIBLEY COUNTY WILL EXPIRE AT 700
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.

LAT...LON 4456 9422 4462 9426 4468 9413 4458 9405
TIME...MOT...LOC 2355Z 248DEG 17KT 4463 9409 

$$

CTG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 6:23 PM CDT	Special Weather Statement	MPX	Sibley	52 min

Nearby

Tornado Warnings in Minnesota, 2020 Every tornado warning in 2020 Tornadoes in 2020

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.