Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 99, NWS Twin Cities, MN

July 4, 2017Chippewa County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 4, 2017, 8:15 PM CDT for Chippewa County, Minnesota. It was in force for 45 min. 2 reports 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, 8:15 PM CDT (01:15 UTC)
Expired: Jul 4, 2017, 9:00 PM CDT
In force: 45 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Chippewa County, MN

The radar

The Minneapolis radar (KMPX), 146 km from the middle of the area, began a volume at 01:19 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, 8:45 PM CDT	HAIL 1.5	1 Nne Clara City, MN
Jul 4, 8:51 PM CDT	HAIL 1	1 Ne Clara City, MN

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, 1.3 hours before the alert went out and 143 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.

104 
WUUS53 KMPX 050115
SVRMPX
MNC023-050200-
/O.NEW.KMPX.SV.W.0099.170705T0115Z-170705T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
815 PM CDT TUE JUL 4 2017

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Northeastern Chippewa County in west central Minnesota...

* Until 900 PM CDT

* At 814 PM CDT, a severe thunderstorm was located 7 miles northeast
  of Gluek, or 17 miles west of Willmar, moving south at 10 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,
  Clara City around 900 PM CDT. 

Other locations impacted by this severe thunderstorm include Gluek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4515 9547 4515 9525 4496 9525 4497 9552
TIME...MOT...LOC 0114Z 004DEG 8KT 4507 9539 

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

BORGHOFF

3 follow-up statements

944 
WWUS53 KMPX 050133
SVSMPX

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

MNC023-050200-
/O.CON.KMPX.SV.W.0099.000000T0000Z-170705T0200Z/
Chippewa MN-
833 PM CDT TUE JUL 4 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR NORTHEASTERN CHIPPEWA COUNTY...

At 833 PM CDT, a severe thunderstorm was located over Clara City, or
17 miles southwest of Willmar, moving southeast at 10 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. 

Locations impacted include... 
Clara City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4515 9547 4515 9539 4506 9535 4502 9527
      4496 9525 4497 9543 4504 9550
TIME...MOT...LOC 0133Z 329DEG 11KT 4499 9535 

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

BORGHOFF

763 
WWUS53 KMPX 050143
SVSMPX

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

MNC023-050200-
/O.CON.KMPX.SV.W.0099.000000T0000Z-170705T0200Z/
Chippewa MN-
843 PM CDT TUE JUL 4 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR EASTERN CHIPPEWA COUNTY...

At 843 PM CDT, a severe thunderstorm was located over Clara City, or
17 miles southwest of Willmar, moving southeast at 10 mph.

HAZARD...Quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Damage to vehicles is expected. 

Locations impacted include...
Clara City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4499 9542 4503 9529 4502 9527 4496 9525
      4497 9543 4498 9544
TIME...MOT...LOC 0143Z 329DEG 11KT 4497 9532 

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

BORGHOFF

616 
WWUS53 KMPX 050150
SVSMPX

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

MNC023-050200-
/O.EXP.KMPX.SV.W.0099.000000T0000Z-170705T0200Z/
Chippewa MN-
850 PM CDT TUE JUL 4 2017

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CHIPPEWA COUNTY WILL
EXPIRE AT 900 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 4499 9542 4503 9529 4502 9527 4496 9525
      4497 9543 4498 9544
TIME...MOT...LOC 0150Z 004DEG 8KT 4496 9532 

$$

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, 7:19 PM CDT	Severe Thunderstorm Warning	MPX	Renville	41 min
Jul 4, 7:32 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Swift	43 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.