Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 103, NWS Twin Cities, MN

July 25, 2018Faribault County, Martin County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 25, 2018, 3:31 PM CDT for Faribault County, Martin County, Minnesota. It was in force for 29 min. 1 report 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: Jul 25, 2018, 3:31 PM CDT (20:31 UTC)
Expired: Jul 25, 2018, 4:00 PM CDT
In force: 29 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Faribault County, MN, Martin County, MN

The radar

The Minneapolis radar (KMPX), 133 km from the middle of the area, began a volume at 20:31 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

Time	Report	Where	Remark
Jul 25, 3:44 PM CDT	HAIL 1	1 Nne Winnebago, MN	NICKEL TO QUARTER SIZE HAIL.

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

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.5 hours before the alert went out and 132 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: 287 J/kg
Mixed-layer CIN: -165 J/kg
Mixed-layer LCL: 1643 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

409 
WUUS53 KMPX 252031
SVRMPX
MNC043-091-252100-
/O.NEW.KMPX.SV.W.0103.180725T2031Z-180725T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
331 PM CDT WED JUL 25 2018

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Northwestern Faribault County in south central Minnesota...
  Northeastern Martin County in south central Minnesota...

* Until 400 PM CDT.

* At 330 PM CDT, a severe thunderstorm was located near Granada, or
  12 miles northeast of Fairmont, moving east 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.

* Locations impacted include...
  Blue Earth, Winnebago, Delavan and Huntley. 

This includes the following highways...
 Interstate 90 near mile marker 118, and between mile markers 120 and
124.
 U.S. Highway 169 between mile markers 12 and 22.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4375 9440 4382 9435 4379 9397 4363 9401
TIME...MOT...LOC 2030Z 283DEG 31KT 4377 9431 

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

ETA

1 follow-up statement

943 
WWUS53 KMPX 252046
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
346 PM CDT WED JUL 25 2018

MNC091-252055-
/O.CAN.KMPX.SV.W.0103.000000T0000Z-180725T2100Z/
Martin MN-
346 PM CDT WED JUL 25 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MARTIN COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4370 9425 4381 9425 4379 9397 4363 9401
TIME...MOT...LOC 2045Z 283DEG 31KT 4374 9413 

$$

MNC043-252100-
/O.CON.KMPX.SV.W.0103.000000T0000Z-180725T2100Z/
Faribault MN-
346 PM CDT WED JUL 25 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR NORTHWESTERN FARIBAULT COUNTY...

At 345 PM CDT, a severe thunderstorm was located over Winnebago, or
18 miles northeast of Fairmont, moving east 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.

Locations impacted include...
Blue Earth, Winnebago, Delavan and Huntley. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4370 9425 4381 9425 4379 9397 4363 9401
TIME...MOT...LOC 2045Z 283DEG 31KT 4374 9413 

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

ETA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 5:38 AM CDT	Special Weather Statement	MPX	Chippewa, Lac qui Parle, Swift	37 min
Jul 25, 2:55 PM CDT	Special Weather Statement	MPX	Martin	35 min
Jul 25, 3:40 PM CDT	Special Weather Statement	MPX	Redwood	35 min
Jul 25, 3:59 PM CDT	Special Weather Statement	MPX	Faribault	31 min
Jul 25, 4:02 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Redwood	28 min
Jul 25, 4:27 PM CDT	Severe Thunderstorm Warning	MPX	Watonwan	48 min
Jul 25, 4:28 PM CDT	Special Weather Statement	MPX	Anoka	32 min
Jul 25, 5:02 PM CDT	Special Weather Statement	MPX	Martin	28 min
Jul 25, 5:12 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Martin	33 min
Jul 25, 5:34 PM CDT	Severe Thunderstorm Warning	MPX	Faribault	32 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2018 Every severe thunderstorm warning in 2018

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.