Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 84, NWS Twin Cities, MN

June 21, 2017Douglas County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 21, 2017, 7:17 PM CDT for Douglas County, Minnesota. It was in force for 43 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
Jun 21, 2017, 7:17 PM CDT (00:17 UTC)
Expired
Jun 21, 2017, 8:00 PM CDT
In force
43 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.25 in
Wind
70.0 mph

County Douglas County, MN

The radar

The Minneapolis radar (KMPX), 202 km from the middle of the area, began a volume at 00:21 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, 0.3 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2017-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2017-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1414 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
205 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

469 
WUUS53 KMPX 220017
SVRMPX
MNC041-220100-
/O.NEW.KMPX.SV.W.0084.170622T0017Z-170622T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
717 PM CDT WED JUN 21 2017

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Northern Douglas County in west central Minnesota...

* Until 800 PM CDT

* At 716 PM CDT, a severe thunderstorm was located over Ashby, or 18
  miles southeast of Fergus Falls, moving southeast at 35 mph.

  HAZARD...70 mph wind gusts and half dollar size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings. 

* This severe thunderstorm will be near,
  Evansville around 730 PM CDT. 
  Brandon around 735 PM CDT. 

Other locations impacted by this severe thunderstorm include Miltona,
Millerville, Melby and Leaf Valley.

This includes Interstate 94 in Minnesota between mile markers 81 and
91.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4611 9538 4606 9522 4587 9575 4588 9576
      4611 9577
TIME...MOT...LOC 0016Z 296DEG 31KT 4611 9577 

HAIL...1.25IN
WIND...70MPH
 
$$

LS
2 follow-up statements
911 
WWUS53 KMPX 220028
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
728 PM CDT WED JUN 21 2017

MNC041-220100-
/O.CON.KMPX.SV.W.0084.000000T0000Z-170622T0100Z/
Douglas MN-
728 PM CDT WED JUN 21 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR NORTHERN DOUGLAS COUNTY...

At 728 PM CDT, a severe thunderstorm was located over Melby, or 19
miles northwest of Alexandria, moving southeast at 30 mph.

HAZARD...70 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings. 

This severe storm will be near...
  Brandon around 745 PM CDT. 

Other locations impacted by this severe thunderstorm include Miltona,
Millerville, Melby and Leaf Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4611 9538 4606 9522 4587 9575 4588 9576
      4611 9577
TIME...MOT...LOC 0028Z 304DEG 24KT 4606 9569 

HAIL...1.25IN
WIND...70MPH
 
$$

LS
567 
WWUS53 KMPX 220050
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
750 PM CDT WED JUN 21 2017

MNC041-220100-
/O.CON.KMPX.SV.W.0084.000000T0000Z-170622T0100Z/
Douglas MN-
750 PM CDT WED JUN 21 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR NORTHEASTERN DOUGLAS COUNTY...

At 749 PM CDT, a severe thunderstorm was located near Leaf Valley, or
9 miles northwest of Alexandria, moving east at 35 mph.

HAZARD...70 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings. 

this severe thunderstorm will remain over mainly rural areas of
northeastern Douglas County, including the following locations:
Millerville, Miltona and Leaf Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4611 9538 4606 9522 4592 9561 4611 9565
TIME...MOT...LOC 0049Z 288DEG 29KT 4600 9549 

HAIL...1.25IN
WIND...70MPH
 
$$

LS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 8:00 PM CDTSpecial Weather StatementMPXDouglas45 min
Jun 21, 8:39 PM CDTSpecial Weather StatementMPXStearns66 min
Jun 21, 9:39 PM CDTSpecial Weather StatementMPXPope66 min
Jun 21, 11:49 PM CDTSpecial Weather StatementMPXTodd41 min
Jun 21, 11:55 PM CDTSpecial Weather StatementMPXFaribault, Martin65 min
Jun 21, 11:58 PM CDTSevere Thunderstorm WarningMPXMartin35 min
Jun 22, 12:08 AM CDTSevere Thunderstorm WarningMPXFaribault37 min
Jun 22, 12:32 AM CDTSpecial Weather StatementMPXGoodhue, Rice58 min
Jun 22, 12:46 AM CDTSpecial Weather StatementMPXTodd44 min
Jun 22, 12:54 AM CDTSevere Thunderstorm WarningMPXDouglas, Todd36 min
Jun 22, 1:05 AM CDTSpecial Weather StatementMPXMartin40 min
Jun 22, 4:50 AM CDTSevere Thunderstorm WarningMPXRedwood40 min
Jun 22, 6:35 AM CDTSpecial Weather StatementMPXBlue Earth55 min
Jun 22, 7:23 AM CDTSevere Thunderstorm WarningMPXRice, Steele37 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.