Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 42, NWS Twin Cities, MN

May 17, 2017Blue Earth County, Brown County, Nicollet County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 17, 2017, 4:03 PM CDT for Blue Earth County, Brown County, Nicollet County, Minnesota. It was in force for 27 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 17, 2017, 4:03 PM CDT (21:03 UTC)
Expired: May 17, 2017, 4:30 PM CDT
In force: 27 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Blue Earth County, MN, Brown County, MN, Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 86 km from the middle of the area, began a volume at 21:02 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.

Issued	Product	Office	Lasted
May 17, 2:53 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.1 hours before the alert went out and 84 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: 737 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: -70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

884 
WUUS53 KMPX 172103
SVRMPX
MNC013-015-103-172130-
/O.NEW.KMPX.SV.W.0042.170517T2103Z-170517T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
403 PM CDT WED MAY 17 2017

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southeastern Brown County in south central Minnesota...
  Northwestern Blue Earth County in south central Minnesota...
  Central Nicollet County in south central Minnesota...

* Until 430 PM CDT

* At 403 PM CDT, a severe thunderstorm was located over Searles, or 7
  miles southeast of New Ulm, moving north at 35 mph.

  HAZARD...60 mph wind gusts and half dollar 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,
  New Ulm around 415 PM CDT. 
  Lafayette around 430 PM CDT. 

Other locations impacted by this severe thunderstorm include Searles,
Klossner and New Ulm Airport.

This includes U.S. Highway 14 between mile markers 100 and 115.
 
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 1000 PM CDT for south central
and central Minnesota.

LAT...LON 4445 9456 4446 9427 4446 9424 4412 9424
      4412 9446
TIME...MOT...LOC 2103Z 170DEG 31KT 4421 9440 

HAIL...1.25IN
WIND...60MPH
 
$$

SPD

1 follow-up statement

119 
WWUS53 KMPX 172122
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
422 PM CDT WED MAY 17 2017

MNC013-015-172132-
/O.CAN.KMPX.SV.W.0042.000000T0000Z-170517T2130Z/
Brown MN-Blue Earth MN-
422 PM CDT WED MAY 17 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BROWN AND
NORTHWESTERN BLUE EARTH COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 1000 PM CDT for south central
and central Minnesota.

LAT...LON 4433 9446 4435 9449 4435 9452 4445 9456
      4446 9430 4446 9424 4427 9424
TIME...MOT...LOC 2122Z 170DEG 31KT 4438 9444 

$$

MNC103-172130-
/O.CON.KMPX.SV.W.0042.000000T0000Z-170517T2130Z/
Nicollet MN-
422 PM CDT WED MAY 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR NORTH CENTRAL NICOLLET COUNTY...

At 422 PM CDT, a severe thunderstorm was located over Klossner, or
near New Ulm, moving north at 35 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 north
central Nicollet County, including the following locations: Klossner.

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 1000 PM CDT for south central
and central Minnesota.

LAT...LON 4433 9446 4435 9449 4435 9452 4445 9456
      4446 9430 4446 9424 4427 9424
TIME...MOT...LOC 2122Z 170DEG 31KT 4438 9444 

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

SPD

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 9:42 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	48 min
May 17, 2:34 PM CDT	Special Weather Statement	MPX	Freeborn	26 min
May 17, 2:44 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn	31 min
May 17, 2:56 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn	34 min
May 17, 3:03 PM CDT	Special Weather Statement	MPX	Martin, Watonwan	42 min
May 17, 3:08 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn, Steele	24 min
May 17, 3:10 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault	35 min
May 17, 3:23 PM CDT	Special Weather Statement	MPX	Martin	22 min
May 17, 3:30 PM CDT	Severe Thunderstorm Warning	MPX	Steele	30 min
May 17, 3:42 PM CDT	Tornado Warning	MPX	Blue Earth	33 min
May 17, 3:55 PM CDT	Tornado Warning	MPX	Steele	21 min
May 17, 4:00 PM CDT	Severe Thunderstorm Warning	MPX	Rice, Steele	30 min
May 17, 4:11 PM CDT	Tornado Warning	MPX	Blue Earth, Nicollet	19 min
May 17, 5:00 PM CDT	Special Weather Statement	MPX	Nicollet	30 min
May 17, 5:01 PM CDT	Flash Flood Warning	MPX	Blue Earth, Le Sueur, Nicollet	119 min
May 17, 5:13 PM CDT	Special Weather Statement	MPX	Anoka	32 min
May 17, 5:45 PM CDT	Special Weather Statement	MPX	Carver	30 min
May 17, 5:50 PM CDT	Special Weather Statement	MPX	Chisago	25 min
May 17, 6:04 PM CDT	Special Weather Statement	MPX	Hennepin, Rice, Scott, Wright	56 min
May 17, 6:08 PM CDT	Special Weather Statement	MPX	Martin	37 min
May 17, 6:11 PM CDT	Special Weather Statement	MPX	Chisago	64 min
May 17, 6:45 PM CDT	Special Weather Statement	MPX	Sherburne	60 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.