Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 37, NWS Twin Cities, MN

May 17, 2017Freeborn County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 17, 2017, 2:56 PM CDT for Freeborn County, Minnesota. It was in force for 34 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, 2:56 PM CDT (19:56 UTC)
Expired: May 17, 2017, 3:30 PM CDT
In force: 34 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Freeborn County, MN

The radar

The Minneapolis radar (KMPX), 127 km from the middle of the area, began a volume at 19:56 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.

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, 7.9 hours before the alert went out and 127 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.

154 
WUUS53 KMPX 171956
SVRMPX
MNC047-172030-
/O.NEW.KMPX.SV.W.0037.170517T1956Z-170517T2030Z/

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

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Western Freeborn County in south central Minnesota...

* Until 330 PM CDT

* At 256 PM CDT, a severe thunderstorm was located over Conger, or 8
  miles west of Albert Lea, moving north 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,
  Alden around 300 PM CDT. 
  Hartland and Freeborn around 310 PM CDT. 

This includes Interstate 90 between mile markers 145 and 150.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4373 9365 4382 9365 4382 9349 4358 9349
      4357 9358
TIME...MOT...LOC 1956Z 169DEG 40KT 4363 9354 

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

SPD

3 follow-up statements

635 
WWUS53 KMPX 172002
SVSMPX

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

MNC047-172030-
/O.CON.KMPX.SV.W.0037.000000T0000Z-170517T2030Z/
Freeborn MN-
302 PM CDT WED MAY 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM CDT
FOR NORTHWESTERN FREEBORN COUNTY...

At 302 PM CDT, a severe thunderstorm was located over Alden, or 10
miles west of Albert Lea, moving north 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 storm will be near...
  Hartland around 310 PM CDT. 

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
Minnesota.

LAT...LON 4371 9362 4382 9365 4382 9349 4363 9350
      4363 9359
TIME...MOT...LOC 2002Z 169DEG 40KT 4370 9356 

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

SPD

250 
WWUS53 KMPX 172014
SVSMPX

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

MNC047-172030-
/O.CON.KMPX.SV.W.0037.000000T0000Z-170517T2030Z/
Freeborn MN-
314 PM CDT WED MAY 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM CDT
FOR NORTHWESTERN FREEBORN COUNTY...

At 314 PM CDT, a severe thunderstorm was located over Matawan, or 16
miles northwest of Albert Lea, moving north 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
northwestern Freeborn County.

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
Minnesota.

LAT...LON 4373 9361 4382 9365 4382 9351 4374 9354
TIME...MOT...LOC 2014Z 169DEG 40KT 4383 9360 

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

SPD

040 
WWUS53 KMPX 172021
SVSMPX

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

MNC047-172031-
/O.EXP.KMPX.SV.W.0037.000000T0000Z-170517T2030Z/
Freeborn MN-
321 PM CDT WED MAY 17 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN FREEBORN COUNTY
WILL EXPIRE AT 330 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 1000 PM CDT for south central
Minnesota.

LAT...LON 4373 9361 4382 9365 4382 9351 4374 9354
TIME...MOT...LOC 2021Z 169DEG 40KT 4389 9362 

$$

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, 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, 4:03 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, Nicollet	27 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.