Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 134, NWS Twin Cities, MN

July 9, 2017Brown County, Redwood County, Renville County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 9, 2017, 10:55 PM CDT for Brown County, Redwood County, Renville County, Minnesota. It was in force for 35 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 9, 2017, 10:55 PM CDT (03:55 UTC)
Expired
Jul 9, 2017, 11:30 PM CDT
In force
35 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Brown County, MN, Redwood County, MN, Renville County, MN

The radar

The Minneapolis radar (KMPX), 105 km from the middle of the area, began a volume at 03:56 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 9, 7:05 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.9 hours before the alert went out and 102 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 2017-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 627 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2017-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 222 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
627 J/kg
Mixed-layer CIN
-187 J/kg
Mixed-layer LCL
1764 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
222 m²/s²
0-3 km storm-relative helicity
278 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.6

Open this sounding in Storm Lab

The text

As transmitted.

282 
WUUS53 KMPX 100355
SVRMPX
MNC015-127-129-100430-
/O.NEW.KMPX.SV.W.0134.170710T0355Z-170710T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
1055 PM CDT SUN JUL 9 2017

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Northeastern Redwood County in southwestern Minnesota...
  North central Brown County in south central Minnesota...
  Southeastern Renville County in central Minnesota...

* Until 1130 PM CDT

* At 1055 PM CDT, a severe thunderstorm was located over Redwood
  Falls Airport, or near Redwood Falls, moving east at 45 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,
  Morton around 1100 PM CDT. 
  Franklin around 1105 PM CDT. 
  Fairfax around 1120 PM CDT. 

Other locations impacted by this severe thunderstorm include North
Redwood and Redwood Falls Airport.

This includes U.S. Highway 71 between mile markers 67 and 86.
 
This includes  Jackpot Junction Casino.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 100 AM CDT for south central,
central and southwestern Minnesota.

LAT...LON 4466 9463 4446 9463 4445 9472 4446 9478
      4445 9478 4445 9473 4444 9472 4441 9515
      4459 9518
TIME...MOT...LOC 0355Z 262DEG 38KT 4452 9505 

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

jrb
3 follow-up statements
386 
WWUS53 KMPX 100409
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1109 PM CDT SUN JUL 9 2017

MNC015-127-129-100430-
/O.CON.KMPX.SV.W.0134.000000T0000Z-170710T0430Z/
Redwood MN-Brown MN-Renville MN-
1109 PM CDT SUN JUL 9 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR NORTHEASTERN REDWOOD...NORTH CENTRAL BROWN AND SOUTHEASTERN
RENVILLE COUNTIES...

At 1109 PM CDT, a severe thunderstorm was located over Franklin, or
12 miles east of Redwood Falls, moving east at 40 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...
  Fairfax around 1120 PM CDT. 

Other locations impacted by this severe thunderstorm include North
Redwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 100 AM CDT for south central,
central and southwestern Minnesota.

LAT...LON 4466 9463 4446 9463 4445 9472 4446 9478
      4445 9478 4444 9472 4441 9515 4459 9518
TIME...MOT...LOC 0409Z 263DEG 36KT 4452 9487 

HAIL...1.00IN
WIND...60MPH
 
$$
234 
WWUS53 KMPX 100420
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1120 PM CDT SUN JUL 9 2017

MNC015-127-129-100430-
/O.CON.KMPX.SV.W.0134.000000T0000Z-170710T0430Z/
Redwood MN-Brown MN-Renville MN-
1120 PM CDT SUN JUL 9 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR EAST CENTRAL REDWOOD...NORTH CENTRAL BROWN AND SOUTHEASTERN
RENVILLE COUNTIES...

At 1120 PM CDT, a severe thunderstorm was located near Fairfax, or 15
miles northwest of New Ulm, moving east at 45 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 east
central Redwood...north central Brown and southeastern Renville
Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 100 AM CDT for south central,
central and southwestern Minnesota.

LAT...LON 4452 9463 4446 9463 4445 9472 4446 9478
      4445 9478 4444 9472 4441 9515 4448 9516
TIME...MOT...LOC 0420Z 277DEG 38KT 4446 9470 

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

jrb
519 
WWUS53 KMPX 100423
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1123 PM CDT SUN JUL 9 2017

MNC015-127-129-100433-
/O.EXP.KMPX.SV.W.0134.000000T0000Z-170710T0430Z/
Redwood MN-Brown MN-Renville MN-
1123 PM CDT SUN JUL 9 2017

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL REDWOOD...NORTH
CENTRAL BROWN AND SOUTHEASTERN RENVILLE COUNTIES WILL EXPIRE AT 1130
PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 100 AM CDT for south central,
central and southwestern Minnesota.

LAT...LON 4452 9463 4446 9463 4445 9472 4446 9478
      4445 9478 4444 9472 4441 9515 4448 9516
TIME...MOT...LOC 0423Z 262DEG 38KT 4446 9468 

$$

jrb

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 7:35 PM CDTSevere Thunderstorm WarningMPXStevens, Swift40 min
Jul 9, 7:50 PM CDTSevere Thunderstorm WarningMPXMille Lacs, Morrison40 min
Jul 9, 7:51 PM CDTSevere Thunderstorm WarningMPXMcLeod, Meeker, Renville39 min
Jul 9, 7:57 PM CDTTornado WarningMPXStevens, Swift33 min
Jul 9, 8:09 PM CDTTornado WarningMPXSwift28 min
Jul 9, 8:21 PM CDTTornado WarningMPXChippewa, Lac qui Parle39 min
Jul 9, 8:22 PM CDTSevere Thunderstorm WarningMPXBenton, Morrison38 min
Jul 9, 8:25 PM CDTSevere Thunderstorm WarningMPXKanabec, Mille Lacs40 min
Jul 9, 8:28 PM CDTSpecial Weather StatementMPXMcLeod, Scott47 min
Jul 9, 8:33 PM CDTSevere Thunderstorm WarningMPXMcLeod, Renville, Sibley42 min
Jul 9, 8:54 PM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Yellow Medicine66 min
Jul 9, 8:55 PM CDTSevere Thunderstorm WarningMPXBenton, Sherburne25 min
Jul 9, 8:56 PM CDTSevere Thunderstorm WarningMPXDakota, Le Sueur, Rice, Scott34 min
Jul 9, 8:58 PM CDTSevere Thunderstorm WarningMPXChippewa, Swift47 min
Jul 9, 9:03 PM CDTSevere Thunderstorm WarningMPXNicollet, Sibley42 min
Jul 9, 9:06 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Pope, Stearns27 min
Jul 9, 9:09 PM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Swift20 min
Jul 9, 9:11 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Le Sueur, Nicollet, Waseca49 min
Jul 9, 9:16 PM CDTSevere Thunderstorm WarningMPXDakota, Hennepin, Ramsey, Washington44 min
Jul 9, 9:23 PM CDTSevere Thunderstorm WarningMPXDakota, Rice, Scott53 min
Jul 9, 9:26 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Brown, Nicollet49 min
Jul 9, 9:30 PM CDTTornado WarningMPXNicollet30 min
Jul 9, 9:51 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Steele, Waseca54 min
Jul 9, 10:10 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Nicollet35 min
Jul 9, 10:19 PM CDTTornado WarningMPXBlue Earth41 min
Jul 9, 10:34 PM CDTSevere Thunderstorm WarningMPXNicollet, Sibley41 min
Jul 9, 10:41 PM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn, Steele, Waseca64 min
Jul 9, 10:51 PM CDTSevere Thunderstorm WarningMPXMcLeod, Renville, Sibley39 min
Jul 9, 11:05 PM CDTSevere Thunderstorm WarningMPXBlue Earth40 min
Jul 9, 11:17 PM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn43 min
Jul 9, 11:39 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Brown, Nicollet, Watonwan37 min
Jul 9, 11:55 PM CDTSevere Thunderstorm WarningMPXRedwood18 min
Jul 10, 12:05 AM CDTSevere Thunderstorm WarningMPXBlue Earth, Faribault, Martin40 min
Jul 10, 12:45 AM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn30 min
Jul 10, 12:47 AM CDTSevere Thunderstorm WarningMPXNicollet26 min
Jul 10, 1:30 AM CDTSevere Thunderstorm WarningMPXBlue Earth, Brown, Watonwan35 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.