Alert archive / Minnesota / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 7, NWS Twin Cities, MN

May 9, 2023Redwood County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 9, 2023, 1:11 PM CDT for Redwood County, Minnesota. It was in force for 34 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: May 9, 2023, 1:11 PM CDT (18:11 UTC)
Expired: May 9, 2023, 1:45 PM CDT
In force: 34 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Redwood County, MN

The radar

The Sioux Falls radar (KFSD), 131 km from the middle of the area, began a volume at 18:12 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 6.2 hours before the alert went out and 155 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: 49 J/kg
Mixed-layer CIN: -144 J/kg
Mixed-layer LCL: 802 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

197 
WUUS53 KMPX 091811
SVRMPX
MNC127-091845-
/O.NEW.KMPX.SV.W.0007.230509T1811Z-230509T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
111 PM CDT Tue May 9 2023

The National Weather Service in the Twin Cities has issued a

* Severe Thunderstorm Warning for...
  South central Redwood County in southwestern Minnesota...

* Until 145 PM CDT.

* At 111 PM CDT, a severe thunderstorm was located near Lamberton, or
  22 miles southwest of Redwood Falls, moving east at 10 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Lamberton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4420 9541 4420 9543 4431 9543 4438 9525
      4420 9523 4419 9540
TIME...MOT...LOC 1811Z 262DEG 7KT 4426 9535 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CTG

3 follow-up statements

277 
WWUS53 KMPX 091824
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
124 PM CDT Tue May 9 2023

MNC127-091845-
/O.CON.KMPX.SV.W.0007.000000T0000Z-230509T1845Z/
Redwood MN-
124 PM CDT Tue May 9 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM CDT
FOR SOUTH CENTRAL REDWOOD COUNTY...

At 124 PM CDT, a severe thunderstorm was located near Lamberton, or
21 miles southwest of Redwood Falls, moving east at 10 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Lamberton and Revere. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4430 9540 4435 9525 4420 9523 4419 9539
TIME...MOT...LOC 1824Z 262DEG 7KT 4426 9531 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CTG

098 
WWUS53 KMPX 091833
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
133 PM CDT Tue May 9 2023

MNC127-091845-
/O.CON.KMPX.SV.W.0007.000000T0000Z-230509T1845Z/
Redwood MN-
133 PM CDT Tue May 9 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM CDT
FOR SOUTHERN REDWOOD COUNTY...

At 133 PM CDT, a severe thunderstorm was located over Lamberton, or
21 miles southwest of Redwood Falls, moving east at 10 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Lamberton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4429 9533 4432 9525 4420 9523 4419 9531
TIME...MOT...LOC 1833Z 262DEG 7KT 4426 9528 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CTG

714 
WWUS53 KMPX 091837
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
137 PM CDT Tue May 9 2023

MNC127-091847-
/O.EXP.KMPX.SV.W.0007.000000T0000Z-230509T1845Z/
Redwood MN-
137 PM CDT Tue May 9 2023

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN REDWOOD COUNTY WILL
EXPIRE AT 145 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 4429 9533 4432 9525 4420 9523 4419 9531
TIME...MOT...LOC 1837Z 262DEG 7KT 4426 9527 

$$

CTG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 7:01 PM CDT	Special Weather Statement	MPX	Blue Earth	29 min
May 8, 7:08 PM CDT	Special Weather Statement	MPX	Martin	22 min
May 8, 7:30 PM CDT	Special Weather Statement	MPX	Rice	30 min
May 8, 7:31 PM CDT	Special Weather Statement	MPX	Waseca	44 min
May 8, 7:32 PM CDT	Special Weather Statement	MPX	Faribault	43 min
May 8, 7:59 PM CDT	Special Weather Statement	MPX	Rice	31 min
May 8, 8:02 PM CDT	Special Weather Statement	MPX	Freeborn	28 min
May 8, 8:23 PM CDT	Special Weather Statement	MPX	Goodhue	37 min
May 9, 2:13 PM CDT	Special Weather Statement	MPX	Yellow Medicine	47 min
May 9, 2:45 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle	30 min
May 9, 3:37 PM CDT	Special Weather Statement	MPX	Pope	53 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2023 Every severe thunderstorm warning in 2023

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.