Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 20, NWS Twin Cities, MN

May 15, 2017Waseca County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 15, 2017, 9:32 PM CDT for Waseca 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: May 15, 2017, 9:32 PM CDT (02:32 UTC)
Expired: May 15, 2017, 10:15 PM CDT
In force: 43 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Waseca County, MN

The radar

The Minneapolis radar (KMPX), 99 km from the middle of the area, began a volume at 02:32 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, 2.5 hours before the alert went out and 100 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

051 
WUUS53 KMPX 160232
SVRMPX
MNC161-160315-
/O.NEW.KMPX.SV.W.0020.170516T0232Z-170516T0315Z/

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

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southern Waseca County in south central Minnesota...

* Until 1015 PM CDT

* At 932 PM CDT, a severe thunderstorm was located near Waldorf, or
  22 miles northwest of Albert Lea, moving northeast at 30 mph.

  HAZARD...Quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Damage to vehicles is expected. 

* This severe thunderstorm will be near,
  Waldorf around 935 PM CDT. 
  New Richland around 945 PM CDT. 
  Waseca around 1000 PM CDT. 

Other locations impacted by this severe thunderstorm include Otisco.

This includes U.S. Highway 14 between mile markers 159 and 165.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4390 9375 4416 9341 4410 9340 4393 9341
      4384 9358 4385 9364
TIME...MOT...LOC 0232Z 229DEG 27KT 4388 9369 

HAIL...1.00IN
WIND...<50MPH
 
$$

BORGHOFF

1 follow-up statement

394 
WWUS53 KMPX 160246
SVSMPX

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

MNC161-160315-
/O.CON.KMPX.SV.W.0020.000000T0000Z-170516T0315Z/
Waseca MN-
946 PM CDT MON MAY 15 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR SOUTHEASTERN WASECA COUNTY...

At 946 PM CDT, a severe thunderstorm was located over Otisco, or 20
miles southwest of Owatonna, moving northeast at 30 mph.

HAZARD...Quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Damage to vehicles is expected. 

This severe storm will be near...
  New Richland around 950 PM CDT. 

Other locations impacted by this severe thunderstorm include Otisco.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4394 9367 4412 9340 4410 9340 4393 9341
      4387 9355
TIME...MOT...LOC 0246Z 237DEG 27KT 4393 9356 

HAIL...1.00IN
WIND...<50MPH
 
$$

BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 8:53 PM CDT	Special Weather Statement	MPX	Faribault	37 min
May 15, 9:55 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Waseca	35 min
May 15, 10:04 PM CDT	Severe Thunderstorm Warning	MPX	Steele	56 min
May 15, 10:25 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	26 min
May 15, 11:11 PM CDT	Special Weather Statement	MPX	Waseca	34 min
May 15, 11:39 PM CDT	Special Weather Statement	MPX	Rice	36 min
May 16, 1:18 AM CDT	Special Weather Statement	MPX	Rice	42 min
May 16, 3:05 AM CDT	Special Weather Statement	MPX	Lac qui Parle, Yellow Medicine	55 min
May 16, 3:47 AM CDT	Special Weather Statement	MPX	Chippewa, Kandiyohi, Stevens, Swift	28 min
May 16, 4:20 AM CDT	Special Weather Statement	MPX	Kandiyohi, Stearns	55 min
May 16, 5:06 AM CDT	Special Weather Statement	MPX	Brown, Martin, Redwood, Watonwan	84 min
May 16, 2:54 PM CDT	Flash Flood Watch	MPX	Faribault, Freeborn, Goodhue, Rice, Steele, Waseca	12 hr
May 16, 3:04 PM CDT	Special Weather Statement	MPX	Rice	26 min
May 16, 3:27 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Rice	48 min
May 16, 4:06 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Washington	39 min
May 16, 4:38 PM CDT	Severe Thunderstorm Warning	MPX	Washington	52 min
May 16, 5:32 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Rice	43 min
May 16, 5:42 PM CDT	Severe Thunderstorm Warning	MPX	Rice	33 min
May 16, 6:16 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue	44 min
May 16, 6:58 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	47 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2017 Every 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.