Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 10, NWS Sioux Falls, SD

April 27, 2021Jackson County, Nobles County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Apr 27, 2021, 12:46 AM CDT for Jackson County, Nobles County, Minnesota. It was in force for 44 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: Apr 27, 2021, 12:46 AM CDT (05:46 UTC)
Expired: Apr 27, 2021, 1:30 AM CDT
In force: 44 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Jackson County, MN, Nobles County, MN

The radar

The Sioux Falls radar (KFSD), 106 km from the middle of the area, began a volume at 05:49 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
Apr 27, 12:50 AM CDT	HAIL 1.75	4 Nw Round Lake, MN	REPORT VIA SOCIAL MEDIA.

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 00:00Z, 5.8 hours before the alert went out and 200 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: 828 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 397 m²/s²
0-3 km storm-relative helicity: 378 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

940 
WUUS53 KFSD 270546
SVRFSD
MNC063-105-270630-
/O.NEW.KFSD.SV.W.0010.210427T0546Z-210427T0630Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
1246 AM CDT Tue Apr 27 2021

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
  Southwestern Jackson County in southwestern Minnesota...
  East central Nobles County in southwestern Minnesota...

* Until 130 AM CDT.

* At 1246 AM CDT, a severe thunderstorm was located near Round Lake,
  or near Worthington, moving east at 20 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* This severe thunderstorm will remain over mainly rural areas of
  southwestern Jackson and east central Nobles Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4355 9554 4363 9556 4374 9525 4356 9519
TIME...MOT...LOC 0546Z 250DEG 17KT 4359 9551 

HAIL...1.00IN
WIND...<50MPH
 
$$

Kalin

2 follow-up statements

832 
WWUS53 KFSD 270606
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
106 AM CDT Tue Apr 27 2021

MNC105-270616-
/O.CAN.KFSD.SV.W.0010.000000T0000Z-210427T0630Z/
Nobles MN-
106 AM CDT Tue Apr 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL NOBLES COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4360 9540 4368 9541 4374 9525 4361 9521
TIME...MOT...LOC 0606Z 243DEG 24KT 4365 9534 

$$

MNC063-270630-
/O.CON.KFSD.SV.W.0010.000000T0000Z-210427T0630Z/
Jackson MN-
106 AM CDT Tue Apr 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM CDT
FOR WEST CENTRAL JACKSON COUNTY...

At 106 AM CDT, a severe thunderstorm was located near Brewster, or 12
miles east of Worthington, moving northeast at 25 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

This severe thunderstorm will remain over mainly rural areas of west
central Jackson County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4360 9540 4368 9541 4374 9525 4361 9521
TIME...MOT...LOC 0606Z 243DEG 24KT 4365 9534 

HAIL...1.00IN
WIND...<50MPH
 
$$

Kalin

777 
WWUS53 KFSD 270626
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
126 AM CDT Tue Apr 27 2021

MNC063-270635-
/O.EXP.KFSD.SV.W.0010.000000T0000Z-210427T0630Z/
Jackson MN-
126 AM CDT Tue Apr 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL JACKSON COUNTY
WILL EXPIRE AT 130 AM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However hail to 
the size of nickels is still possible with this thunderstorm.

LAT...LON 4360 9540 4368 9541 4374 9525 4361 9521
TIME...MOT...LOC 0625Z 250DEG 17KT 4368 9524 

$$

Kalin

Nearby

Severe Thunderstorm Warnings in Minnesota, 2021 Every severe thunderstorm warning in 2021

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.