Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 97, NWS Sioux Falls, SD

May 30, 2011Lincoln County, Lyon County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at May 30, 2011, 4:35 AM CDT for Lincoln County, Lyon County, Minnesota. It was in force for 40 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 30, 2011, 4:35 AM CDT (09:35 UTC)
Expired: May 30, 2011, 5:15 AM CDT
In force: 40 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 1.25 in
Wind: 58.0 mph

Counties Lincoln County, MN, Lyon County, MN

The radar

The Sioux Falls radar (KFSD), 132 km from the middle of the area, began a volume at 09:38 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 29, 10:58 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 9.6 hours before the alert went out and 178 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: 2019 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 167 m²/s²
0-3 km storm-relative helicity: 532 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

980 
WUUS53 KFSD 300935
SVRFSD
MNC081-083-301015-
/O.NEW.KFSD.SV.W.0097.110530T0935Z-110530T1015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
435 AM CDT MON MAY 30 2011

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN LINCOLN COUNTY IN SOUTHWEST MINNESOTA...
  NORTHERN LYON COUNTY IN SOUTHWEST MINNESOTA...

* UNTIL 515 AM CDT

* AT 436 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR
  SIZE HAIL.  THIS STORM WAS LOCATED NEAR TAUNTON...OR 15 MILES
  NORTHWEST OF MARSHALL...AND MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GHENT AROUND 445 AM CDT...
  COTTONWOOD AROUND 505 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4462 9560 4454 9559 4443 9611 4460 9620
      4464 9605 4463 9561
TIME...MOT...LOC 0936Z 250DEG 30KT 4455 9603
WIND...HAIL <58MPH 1.25IN

$$

BT

6 follow-up statements

994 
WWUS53 KFSD 300944
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
444 AM CDT MON MAY 30 2011

MNC081-083-301015-
/O.CON.KFSD.SV.W.0097.000000T0000Z-110530T1015Z/
LINCOLN MN-LYON MN-
444 AM CDT MON MAY 30 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN LYON
AND NORTHEASTERN LINCOLN COUNTIES UNTIL 515 AM CDT...

AT 444 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING WALNUT SIZE HAIL.  THIS
STORM WAS LOCATED NEAR MINNEOTA...OR 11 MILES NORTHWEST OF
MARSHALL...MOVING EAST AT 35 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  COTTONWOOD AROUND 505 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4462 9560 4454 9559 4443 9611 4460 9620
      4464 9605 4463 9561
TIME...MOT...LOC 0944Z 250DEG 30KT 4457 9594
WIND...HAIL <58MPH 1.50IN

$$

BT

518 
WWUS53 KFSD 300950
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
450 AM CDT MON MAY 30 2011

MNC081-083-301015-
/O.CON.KFSD.SV.W.0097.000000T0000Z-110530T1015Z/
LINCOLN MN-LYON MN-
450 AM CDT MON MAY 30 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN LYON
AND NORTHEASTERN LINCOLN COUNTIES UNTIL 515 AM CDT...

AT 450 AM CDT...A SEVERE THUNDERSTORM WAS REPORTED...PRODUCING 
WALNUT SIZE HAIL.  THIS STORM WAS LOCATED NEAR MINNEOTA...OR 11 MILES
NORTHWEST OF MARSHALL...MOVING EAST AT 35 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  COTTONWOOD AROUND 505 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4462 9560 4454 9559 4443 9611 4460 9620
      4464 9605 4463 9561
TIME...MOT...LOC 0950Z 250DEG 30KT 4459 9587
WIND...HAIL <58MPH 1.50IN

$$


BT

990 
WWUS53 KFSD 300951
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
451 AM CDT MON MAY 30 2011

MNC081-301001-
/O.CAN.KFSD.SV.W.0097.000000T0000Z-110530T1015Z/
LINCOLN MN-
451 AM CDT MON MAY 30 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LINCOLN COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4462 9560 4454 9559 4448 9594 4457 9603
      4464 9605 4463 9561
TIME...MOT...LOC 0951Z 250DEG 30KT 4459 9586

$$

MNC083-301015-
/O.CON.KFSD.SV.W.0097.000000T0000Z-110530T1015Z/
LYON MN-
451 AM CDT MON MAY 30 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN LYON
COUNTY UNTIL 515 AM CDT...

AT 451 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING WALNUT SIZE HAIL.  THIS
STORM WAS LOCATED NEAR MINNEOTA...OR 10 MILES NORTHWEST OF
MARSHALL...MOVING EAST AT 35 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  COTTONWOOD AROUND 505 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4462 9560 4454 9559 4448 9594 4457 9603
      4464 9605 4463 9561
TIME...MOT...LOC 0951Z 250DEG 30KT 4459 9586
WIND...HAIL <58MPH 1.50IN

$$

BT

300 
WWUS53 KFSD 301000
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
500 AM CDT MON MAY 30 2011

MNC083-301015-
/O.CON.KFSD.SV.W.0097.000000T0000Z-110530T1015Z/
LYON MN-
500 AM CDT MON MAY 30 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
LYON COUNTY UNTIL 515 AM CDT...

AT 500 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING WALNUT SIZE HAIL.  THIS
STORM WAS LOCATED 6 MILES WEST OF COTTONWOOD...OR 11 MILES NORTH OF
MARSHALL...MOVING EAST AT 35 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  COTTONWOOD AROUND 505 AM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4452 9579 4456 9586 4463 9590 4463 9561
      4462 9560 4454 9559
TIME...MOT...LOC 1000Z 250DEG 30KT 4461 9576
WIND...HAIL <58MPH 1.50IN

$$

BT

329 
WWUS53 KFSD 301002
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
502 AM CDT MON MAY 30 2011

MNC083-301015-
/O.CON.KFSD.SV.W.0097.000000T0000Z-110530T1015Z/
LYON MN-
502 AM CDT MON MAY 30 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
LYON COUNTY UNTIL 515 AM CDT...

AT 502 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE HAIL UP TO HEN
EGG SIZE.  THIS STORM WAS LOCATED NEAR COTTONWOOD...OR 11 MILES NORTH
OF MARSHALL...MOVING EAST AT 35 MPH.

THIS SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF
NORTHEASTERN LYON COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR LARGE DESTRUCTIVE HAIL CAPABLE OF PRODUCING
SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 4452 9579 4456 9586 4463 9590 4463 9561
      4462 9560 4454 9559
TIME...MOT...LOC 1002Z 250DEG 30KT 4461 9574
WIND...HAIL <58MPH 2.00IN

$$

BT

321 
WWUS53 KFSD 301011
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
511 AM CDT MON MAY 30 2011

MNC083-301021-
/O.EXP.KFSD.SV.W.0097.000000T0000Z-110530T1015Z/
LYON MN-
511 AM CDT MON MAY 30 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LYON COUNTY WILL
EXPIRE AT 515 AM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4452 9579 4456 9586 4463 9590 4463 9561
      4462 9560 4454 9559
TIME...MOT...LOC 1011Z 250DEG 30KT 4463 9564

$$

BT

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 30, 2:16 AM CDT	Severe Thunderstorm Warning	FSD	Cottonwood, Jackson, Murray, Nobles	44 min
May 30, 2:55 AM CDT	Severe Thunderstorm Warning	FSD	Cottonwood	35 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2011 Every severe thunderstorm warning in 2011

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.