Alert archive / Minnesota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 246, NWS Twin Cities, MN

September 21, 2016Kandiyohi County, Meeker County, Stearns County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 21, 2016, 6:33 PM CDT for Kandiyohi County, Meeker County, Stearns County, Minnesota. It was in force for 42 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: Sep 21, 2016, 6:33 PM CDT (23:33 UTC)
Expired: Sep 21, 2016, 7:15 PM CDT
In force: 42 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

Counties Kandiyohi County, MN, Meeker County, MN, Stearns County, MN

The radar

The Minneapolis radar (KMPX), 109 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.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.6 hours before the alert went out and 106 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: 515 J/kg
Mixed-layer CIN: -331 J/kg
Mixed-layer LCL: 738 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 136 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.5

Open this sounding in Storm Lab

The text

As transmitted.

672 
WUUS53 KMPX 212333 RRA
SVRMPX
MNC067-093-145-220015-
/O.NEW.KMPX.SV.W.0246.160921T2333Z-160922T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
633 PM CDT WED SEP 21 2016

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN STEARNS COUNTY IN CENTRAL MINNESOTA...
  NORTHWESTERN MEEKER COUNTY IN CENTRAL MINNESOTA...
  NORTHEASTERN KANDIYOHI COUNTY IN CENTRAL MINNESOTA...

* UNTIL 715 PM CDT

* AT 633 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER NEW
  LONDON... OR 12 MILES NORTHEAST OF WILLMAR...MOVING EAST AT 25 MPH.

  HAZARD...HALF DOLLAR SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

* THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
  SOUTHERN STEARNS...NORTHWESTERN MEEKER AND NORTHEASTERN KANDIYOHI
  COUNTIES...INCLUDING THE FOLLOWING LOCATIONS: HAWICK...LAKE KORONIS
  REGIONAL PARK...MANANNAH AND GREEN LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4524 9495 4533 9495 4538 9460 4518 9460
TIME...MOT...LOC 2333Z 267DEG 20KT 4529 9490 

HAIL...1.25IN
WIND...<50MPH
 
$$

BORGHOFF

2 follow-up statements

143 
WWUS53 KMPX 212353
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
653 PM CDT WED SEP 21 2016

MNC067-220002-
/O.CAN.KMPX.SV.W.0246.000000T0000Z-160922T0015Z/
KANDIYOHI MN-
653 PM CDT WED SEP 21 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN KANDIYOHI 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 4538 9460 4518 9460 4522 9476 4535 9476
TIME...MOT...LOC 2352Z 270DEG 26KT 4527 9470 

$$

MNC093-145-220015-
/O.CON.KMPX.SV.W.0246.000000T0000Z-160922T0015Z/
STEARNS MN-MEEKER MN-
653 PM CDT WED SEP 21 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR SOUTHERN STEARNS AND NORTHWESTERN MEEKER COUNTIES...

AT 652 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LAKE KORONIS
REGIONAL PARK...OR 19 MILES NORTHEAST OF WILLMAR...MOVING EAST AT 30
MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
SOUTHERN STEARNS AND NORTHWESTERN MEEKER COUNTIES...INCLUDING THE
FOLLOWING LOCATIONS: LAKE KORONIS REGIONAL PARK AND MANANNAH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4538 9460 4518 9460 4522 9476 4535 9476
TIME...MOT...LOC 2352Z 270DEG 26KT 4527 9470 

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

BORGHOFF

436 
WWUS53 KMPX 220005
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
705 PM CDT WED SEP 21 2016

MNC093-145-220015-
/O.EXP.KMPX.SV.W.0246.000000T0000Z-160922T0015Z/
STEARNS MN-MEEKER MN-
705 PM CDT WED SEP 21 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN STEARNS AND
NORTHWESTERN MEEKER COUNTIES WILL EXPIRE AT 715 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND HAVE EXITED THE WARNED AREA. THEREFORE THE WARNING WILL
BE ALLOWED TO EXPIRE.  HOWEVER SMALL HAIL IS STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 4538 9460 4518 9460 4522 9476 4535 9476
TIME...MOT...LOC 0004Z 267DEG 20KT 4527 9470 

$$

BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 20, 9:49 PM CDT	Special Weather Statement	MPX	Nicollet	26 min
Sep 20, 10:23 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Waseca	37 min
Sep 20, 10:32 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, Le Sueur, Nicollet, Sibley	33 min
Sep 20, 10:49 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Waseca	41 min
Sep 20, 11:20 PM CDT	Special Weather Statement	MPX	Dakota	25 min
Sep 20, 11:37 PM CDT	Special Weather Statement	MPX	Ramsey	23 min
Sep 20, 11:50 PM CDT	Special Weather Statement	MPX	Steele, Waseca	40 min
Sep 20, 11:59 PM CDT	Flash Flood Warning	MPX	Steele, Waseca	3 hr
Sep 21, 12:06 AM CDT	Severe Thunderstorm Warning	MPX	Steele, Waseca	24 min
Sep 21, 12:25 AM CDT	Severe Thunderstorm Warning	MPX	Freeborn, Steele, Waseca	35 min
Sep 21, 1:00 AM CDT	Severe Thunderstorm Warning	MPX	Steele	30 min
Sep 21, 1:58 AM CDT	Special Weather Statement	MPX	Goodhue	62 min
Sep 21, 10:54 AM CDT	Special Weather Statement	MPX	Freeborn	21 min
Sep 21, 2:32 PM CDT	Special Weather Statement	MPX	Dakota	43 min
Sep 21, 4:04 PM CDT	Special Weather Statement	MPX	Ramsey	26 min
Sep 21, 4:39 PM CDT	Special Weather Statement	MPX	Washington	36 min
Sep 21, 4:42 PM CDT	Severe Thunderstorm Warning	MPX	Washington	33 min
Sep 21, 5:48 PM CDT	Special Weather Statement	MPX	Freeborn	42 min
Sep 21, 6:15 PM CDT	Special Weather Statement	MPX	Wright	45 min
Sep 21, 6:20 PM CDT	Special Weather Statement	MPX	Hennepin	40 min
Sep 21, 6:33 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin	42 min
Sep 21, 6:50 PM CDT	Flash Flood Warning	MPX	Anoka, Hennepin, Ramsey, Washington	9 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2016 Every severe thunderstorm warning in 2016

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.