Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 206, NWS Twin Cities, MN

September 22, 2017Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 22, 2017, 4:14 AM CDT for Todd 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
Sep 22, 2017, 4:14 AM CDT (09:14 UTC)
Expired
Sep 22, 2017, 4:48 AM CDT
In force
34 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Todd County, MN

The radar

The Minneapolis radar (KMPX), 190 km from the middle of the area, began a volume at 09:17 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 00:00Z, 9.2 hours before the alert went out and 189 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2017-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1879 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2017-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 278 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1879 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
1223 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
278 m²/s²
0-3 km storm-relative helicity
414 m²/s²
Significant tornado parameter
1.6
Supercell composite
15.2

Open this sounding in Storm Lab

The text

As transmitted.

472 
WUUS53 KMPX 220914
SVRMPX
MNC153-221000-
/O.NEW.KMPX.SV.W.0206.170922T0914Z-170922T1000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
414 AM CDT FRI SEP 22 2017

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Northern Todd County in central Minnesota...

* Until 500 AM CDT

* At 414 AM CDT, a severe thunderstorm was located near Eagle Bend,
  or 29 miles northeast of Alexandria, moving northeast at 35 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. 

* This severe thunderstorm will be near,
  Staples around 435 AM CDT. 
  Staples Airport around 440 AM CDT. 

Other locations impacted by this severe thunderstorm include
Philbrook.

This includes the following highways...
 U.S. Highway 10 in Minnesota between mile markers 103 and 114.
 U.S. Highway 71 between mile markers 196 and 197, and between mile
markers 207 and 219.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4637 9474 4635 9470 4635 9468 4636 9467
      4635 9465 4610 9489 4625 9515 4637 9515
TIME...MOT...LOC 0914Z 220DEG 29KT 4622 9496 

HAIL...1.00IN
WIND...60MPH
 
$$

SPD
2 follow-up statements
607 
WWUS53 KMPX 220931
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
431 AM CDT FRI SEP 22 2017

MNC153-221000-
/O.CON.KMPX.SV.W.0206.000000T0000Z-170922T1000Z/
Todd MN-
431 AM CDT FRI SEP 22 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CDT
FOR NORTHEASTERN TODD COUNTY...

At 431 AM CDT, a severe thunderstorm was located over Staples, or 30
miles west of Brainerd, moving northeast at 35 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. 

This severe storm will be near...
  Staples around 435 AM CDT. 
  Staples Airport around 440 AM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4637 9474 4635 9470 4635 9468 4636 9467
      4635 9465 4622 9478 4628 9508 4637 9501
TIME...MOT...LOC 0931Z 220DEG 29KT 4633 9483 

HAIL...1.00IN
WIND...60MPH
 
$$

SPD
904 
WWUS53 KMPX 220948
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
448 AM CDT FRI SEP 22 2017

MNC153-220958-
/O.CAN.KMPX.SV.W.0206.000000T0000Z-170922T1000Z/
Todd MN-
448 AM CDT FRI SEP 22 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN TODD COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.

LAT...LON 4637 9474 4635 9470 4635 9468 4636 9467
      4635 9465 4622 9478 4628 9508 4637 9501
TIME...MOT...LOC 0948Z 220DEG 29KT 4644 9470 

$$

SPD

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 22, 12:13 AM CDTSpecial Weather StatementMPXMille Lacs32 min
Sep 22, 3:30 AM CDTSevere Thunderstorm WarningMPXDouglas30 min
Sep 22, 4:00 AM CDTSpecial Weather StatementMPXTodd45 min
Sep 22, 4:28 AM CDTSevere Thunderstorm WarningMPXMorrison, Todd21 min
Sep 22, 5:40 AM CDTSevere Thunderstorm WarningMPXKanabec21 min
Sep 22, 7:01 AM CDTSpecial Weather StatementMPXKanabec, Mille Lacs59 min
Sep 22, 7:03 AM CDTSpecial Weather StatementMPXWright42 min
Sep 22, 8:03 AM CDTSpecial Weather StatementMPXSherburne42 min
Sep 22, 8:18 AM CDTSpecial Weather StatementMPXKanabec, Mille Lacs57 min
Sep 22, 8:27 AM CDTSpecial Weather StatementMPXIsanti48 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2017Every severe thunderstorm warning in 2017

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.