Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 22, NWS Twin Cities, MN

May 15, 2017Steele County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 15, 2017, 10:04 PM CDT for Steele County, Minnesota. It was in force for 56 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 15, 2017, 10:04 PM CDT (03:04 UTC)
Expired
May 15, 2017, 11:00 PM CDT
In force
56 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.25 in
Wind
50.0 mph

County Steele County, MN

The radar

The Minneapolis radar (KMPX), 89 km from the middle of the area, began a volume at 03:03 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.

What was reported inside it

TimeReportWhereRemark
May 15, 10:09 PM CDTHAIL 0.88Owatonna, MN
May 15, 10:10 PM CDTHAIL 0.75Owatonna, MN
May 15, 10:10 PM CDTHAIL 1Owatonna, MNLATE REPORT.
May 15, 10:10 PM CDTHAIL 1.251 Ne Owatonna, MN
May 15, 10:10 PM CDTHAIL 1.751 N Owatonna, MN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 15, 9:48 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.1 hours before the alert went out and 90 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 2017-05-16Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2017-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 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
1282 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

010 
WUUS53 KMPX 160304
SVRMPX
MNC147-160400-
/O.NEW.KMPX.SV.W.0022.170516T0304Z-170516T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
1004 PM CDT MON MAY 15 2017

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Northern Steele County in south central Minnesota...

* Until 1100 PM CDT

* At 1004 PM CDT, a severe thunderstorm was located near Lemond, or 7
  miles southwest of Owatonna, moving northeast at 35 mph.

  HAZARD...Half dollar size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Damage to vehicles is expected. 

* This severe thunderstorm will be near,
  Owatonna around 1020 PM CDT. 

Other locations impacted by this severe thunderstorm include Clinton
Falls, Lemond, Merton, Owatonna Airport, Hope and Moland.

This includes the following highways...
 Interstate 35 between mile markers 34 and 46.
 U.S. Highway 14 between mile markers 166 and 182.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4394 9341 4409 9341 4420 9313 4420 9309
      4419 9305 4418 9304 4401 9305
TIME...MOT...LOC 0304Z 241DEG 31KT 4402 9334 

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

BORGHOFF
3 follow-up statements
636 
WWUS53 KMPX 160322
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1022 PM CDT MON MAY 15 2017

MNC147-160400-
/O.CON.KMPX.SV.W.0022.000000T0000Z-170516T0400Z/
Steele MN-
1022 PM CDT MON MAY 15 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR NORTHERN STEELE COUNTY...

At 1022 PM CDT, a severe thunderstorm was located near Lemond, or 8
miles southwest of Owatonna, moving northeast at 30 mph.

HAZARD...Half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Damage to vehicles is expected. 

This severe storm will be near...
  Owatonna around 1045 PM CDT. 

Other locations impacted by this severe thunderstorm include Clinton
Falls, Lemond, Merton, Owatonna Airport, Hope and Moland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4394 9341 4409 9341 4420 9313 4420 9309
      4419 9305 4418 9304 4401 9305
TIME...MOT...LOC 0322Z 246DEG 27KT 4403 9338 

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

BORGHOFF
644 
WWUS53 KMPX 160336
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1036 PM CDT MON MAY 15 2017

MNC147-160400-
/O.CON.KMPX.SV.W.0022.000000T0000Z-170516T0400Z/
Steele MN-
1036 PM CDT MON MAY 15 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR NORTHERN STEELE COUNTY...

At 1036 PM CDT, a severe thunderstorm was located near Owatonna,
moving east at 25 mph.

HAZARD...Half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Damage to vehicles is expected. 

This severe storm will be near...
  Owatonna around 1055 PM CDT. 

Other locations impacted by this severe thunderstorm include Clinton
Falls, Merton, Owatonna Airport and Moland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4399 9340 4409 9341 4420 9313 4420 9309
      4419 9305 4418 9304 4405 9305
TIME...MOT...LOC 0336Z 248DEG 22KT 4406 9333 

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

BORGHOFF
644 
WWUS53 KMPX 160357
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1057 PM CDT MON MAY 15 2017

MNC147-160407-
/O.EXP.KMPX.SV.W.0022.000000T0000Z-170516T0400Z/
Steele MN-
1057 PM CDT MON MAY 15 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN STEELE COUNTY WILL
EXPIRE AT 1100 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning will be allowed to expire.

A severe thunderstorm watch remains in effect until 300 AM CDT for
south central Minnesota.

LAT...LON 4399 9340 4409 9341 4420 9313 4420 9309
      4419 9305 4418 9304 4405 9305
TIME...MOT...LOC 0357Z 241DEG 31KT 4414 9313 

$$

BORGHOFF

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 8:53 PM CDTSpecial Weather StatementMPXFaribault37 min
May 15, 9:32 PM CDTSevere Thunderstorm WarningMPXWaseca43 min
May 15, 9:55 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Waseca35 min
May 15, 10:25 PM CDTSevere Thunderstorm WarningMPXGoodhue26 min
May 15, 11:11 PM CDTSpecial Weather StatementMPXWaseca34 min
May 15, 11:39 PM CDTSpecial Weather StatementMPXRice36 min
May 16, 1:18 AM CDTSpecial Weather StatementMPXRice42 min
May 16, 3:05 AM CDTSpecial Weather StatementMPXLac qui Parle, Yellow Medicine55 min
May 16, 3:47 AM CDTSpecial Weather StatementMPXChippewa, Kandiyohi, Stevens, Swift28 min
May 16, 4:20 AM CDTSpecial Weather StatementMPXKandiyohi, Stearns55 min
May 16, 5:06 AM CDTSpecial Weather StatementMPXBrown, Martin, Redwood, Watonwan84 min
May 16, 2:54 PM CDTFlash Flood WatchMPXFaribault, Freeborn, Goodhue, Rice, Steele, Waseca12 hr
May 16, 3:04 PM CDTSpecial Weather StatementMPXRice26 min
May 16, 3:27 PM CDTSevere Thunderstorm WarningMPXDakota, Goodhue, Rice48 min
May 16, 4:06 PM CDTSevere Thunderstorm WarningMPXDakota, Washington39 min
May 16, 4:38 PM CDTSevere Thunderstorm WarningMPXWashington52 min
May 16, 5:32 PM CDTSevere Thunderstorm WarningMPXDakota, Goodhue, Rice43 min
May 16, 5:42 PM CDTSevere Thunderstorm WarningMPXRice33 min
May 16, 6:16 PM CDTSevere Thunderstorm WarningMPXDakota, Goodhue44 min
May 16, 6:58 PM CDTSevere Thunderstorm WarningMPXGoodhue47 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.