Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 162, NWS Twin Cities, MN

July 19, 2017Redwood County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 19, 2017, 2:06 PM CDT for Redwood County, Minnesota. It was in force for 39 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
Jul 19, 2017, 2:06 PM CDT (19:06 UTC)
Expired
Jul 19, 2017, 2:45 PM CDT
In force
39 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), 134 km from the middle of the area, began a volume at 19:10 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.

IssuedProductOfficeLasted
Jul 19, 12:36 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 7.1 hours before the alert went out and 154 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 12:00Z on 2017-07-19Temperature 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 12:00Z on 2017-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 square meters per square second.1939587897Sfc1 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
1964 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

240 
WUUS53 KMPX 191906
SVRMPX
MNC127-191945-
/O.NEW.KMPX.SV.W.0162.170719T1906Z-170719T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
206 PM CDT WED JUL 19 2017

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southwestern Redwood County in southwestern Minnesota...

* Until 245 PM CDT

* At 205 PM CDT, a severe thunderstorm was located near Tracy, or 13
  miles southeast of Marshall, moving east at 50 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,
  Walnut Grove around 215 PM CDT. 
  Lamberton around 230 PM CDT. 

Other locations impacted by this severe thunderstorm include
Seaforth, Lucan, Milroy, Wanda, Revere and Sanborn.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4449 9559 4449 9511 4420 9511 4419 9540
      4420 9541 4420 9560
TIME...MOT...LOC 1905Z 273DEG 42KT 4429 9565 

HAIL...1.00IN
WIND...60MPH
 
$$
2 follow-up statements
217 
WWUS53 KMPX 191924
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
224 PM CDT WED JUL 19 2017

MNC127-191945-
/O.CON.KMPX.SV.W.0162.000000T0000Z-170719T1945Z/
Redwood MN-
224 PM CDT WED JUL 19 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CDT
FOR SOUTHWESTERN REDWOOD COUNTY...

At 223 PM CDT, a severe thunderstorm was located near Revere, or 21
miles southwest of Redwood Falls, moving east at 50 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 remain over mainly rural areas of
southwestern Redwood County, including the following locations:
Wanda, Revere and Sanborn.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4439 9559 4439 9511 4420 9511 4419 9540
      4420 9541 4420 9560
TIME...MOT...LOC 1923Z 273DEG 42KT 4428 9534 

HAIL...1.00IN
WIND...60MPH
 
$$
107 
WWUS53 KMPX 191940
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
240 PM CDT WED JUL 19 2017

MNC127-191949-
/O.EXP.KMPX.SV.W.0162.000000T0000Z-170719T1945Z/
Redwood MN-
240 PM CDT WED JUL 19 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN REDWOOD COUNTY
WILL EXPIRE AT 245 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.  However heavy rain
is still possible with this thunderstorm.

A severe thunderstorm watch remains in effect until 600 PM CDT for
southwestern Minnesota.

LAT...LON 4439 9559 4439 9511 4420 9511 4419 9540
      4420 9541 4420 9560
TIME...MOT...LOC 1939Z 273DEG 42KT 4427 9508 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 2:38 PM CDTSevere Thunderstorm WarningMPXBrown, Watonwan52 min
Jul 19, 2:51 PM CDTTornado WarningMPXBrown24 min
Jul 19, 3:11 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Brown, Nicollet, Watonwan34 min
Jul 19, 3:38 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Le Sueur, Rice, Waseca37 min
Jul 19, 3:50 PM CDTSevere Thunderstorm WarningMPXFaribault, Martin40 min
Jul 19, 3:57 PM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn18 min
Jul 19, 4:02 PM CDTSevere Thunderstorm WarningMPXDakota, Goodhue43 min
Jul 19, 4:06 PM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn, Steele, Waseca39 min
Jul 19, 4:40 PM CDTSevere Thunderstorm WarningMPXFreeborn20 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.