Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 97, NWS Twin Cities, MN

July 4, 2017Renville County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 4, 2017, 7:19 PM CDT for Renville County, Minnesota. It was in force for 41 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 4, 2017, 7:19 PM CDT (00:19 UTC)
Expired: Jul 4, 2017, 8:00 PM CDT
In force: 41 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 2.0 in
Wind: 60.0 mph

County Renville County, MN

The radar

The Minneapolis radar (KMPX), 137 km from the middle of the area, began a volume at 00:20 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 4, 7:40 PM CDT	HAIL 1	3 N Sacred Heart, MN	PHOTO SHARED ON FACEBOOK.

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 00:00Z, 0.3 hours before the alert went out and 134 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: 1981 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1379 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

507 
WUUS53 KMPX 050019
SVRMPX
MNC129-050100-
/O.NEW.KMPX.SV.W.0097.170705T0019Z-170705T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
719 PM CDT TUE JUL 4 2017

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Northwestern Renville County in central Minnesota...

* Until 800 PM CDT

* At 719 PM CDT, a severe thunderstorm was located near Sacred Heart,
  or 21 miles southeast of Montevideo, moving west at 5 mph.

  HAZARD...Two inch hail and 60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees. 

* This severe thunderstorm will be near,
  Sacred Heart around 740 PM CDT. 

Other locations impacted by this severe thunderstorm include
Minnesota Falls.

This includes U.S. Highway 212 between mile markers 53 and 67.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to shelter inside a strong building,  and stay away from
windows.

&&

LAT...LON 4489 9517 4475 9519 4475 9548 4489 9548
TIME...MOT...LOC 0019Z 080DEG 6KT 4482 9533 

HAIL...2.00IN
WIND...60MPH
 
$$

BORGHOFF

3 follow-up statements

348 
WWUS53 KMPX 050035
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
735 PM CDT TUE JUL 4 2017

MNC129-050100-
/O.CON.KMPX.SV.W.0097.000000T0000Z-170705T0100Z/
Renville MN-
735 PM CDT TUE JUL 4 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR NORTHWESTERN RENVILLE COUNTY...

At 734 PM CDT, a severe thunderstorm was located near Sacred Heart,
or 20 miles east of Montevideo, and is nearly stationary.

HAZARD...Ping pong ball size hail and 60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees. 

Locations impacted include...
Renville, Sacred Heart and Minnesota Falls. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 4489 9517 4475 9519 4475 9548 4489 9548
TIME...MOT...LOC 0034Z 215DEG 2KT 4484 9534 

HAIL...1.50IN
WIND...60MPH
 
$$

BORGHOFF

947 
WWUS53 KMPX 050043
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
743 PM CDT TUE JUL 4 2017

MNC129-050100-
/O.CON.KMPX.SV.W.0097.000000T0000Z-170705T0100Z/
Renville MN-
743 PM CDT TUE JUL 4 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR NORTHWESTERN RENVILLE COUNTY...

At 742 PM CDT, a severe thunderstorm was located near Sacred Heart,
or 20 miles east of Montevideo, and is nearly stationary.

HAZARD...Two inch hail and 60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees. 

Locations impacted include...
Renville and Sacred Heart. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to a shelter, inside a strong building and away from windows.

&&

LAT...LON 4489 9521 4478 9520 4478 9543 4489 9544
TIME...MOT...LOC 0042Z 220DEG 3KT 4485 9533 

HAIL...2.00IN
WIND...60MPH
 
$$

BORGHOFF

152 
WWUS53 KMPX 050059
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
759 PM CDT TUE JUL 4 2017

MNC129-050108-
/O.EXP.KMPX.SV.W.0097.000000T0000Z-170705T0100Z/
Renville MN-
759 PM CDT TUE JUL 4 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN RENVILLE COUNTY
WILL EXPIRE AT 800 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.  However small hail
and heavy rain are still possible with this thunderstorm.

LAT...LON 4489 9521 4478 9520 4478 9543 4489 9544
TIME...MOT...LOC 0058Z 080DEG 6KT 4485 9536 

$$

BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 7:07 PM CDT	Special Weather Statement	MPX	Pope	23 min
Jul 4, 7:08 PM CDT	Special Weather Statement	MPX	Renville	37 min
Jul 4, 7:32 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Swift	43 min
Jul 4, 8:15 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa	45 min
Jul 4, 9:25 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Wright	50 min
Jul 4, 9:31 PM CDT	Special Weather Statement	MPX	Freeborn	44 min
Jul 4, 10:05 PM CDT	Severe Thunderstorm Warning	MPX	Wright	55 min
Jul 4, 11:14 PM CDT	Special Weather Statement	MPX	Hennepin	31 min
Jul 4, 11:37 PM CDT	Special Weather Statement	MPX	Hennepin	53 min
Jul 5, 12:05 AM CDT	Special Weather Statement	MPX	McLeod	40 min
Jul 5, 12:08 AM CDT	Special Weather Statement	MPX	Anoka	52 min
Jul 5, 2:51 AM CDT	Special Weather Statement	MPX	Douglas, Todd	39 min
Jul 5, 8:17 AM CDT	Special Weather Statement	MPX	Meeker	43 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.