Alert archive / Minnesota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 155, NWS Twin Cities, MN

July 17, 2017Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 17, 2017, 4:50 PM CDT for Todd County, Minnesota. It was in force for 40 min. 3 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 17, 2017, 4:50 PM CDT (21:50 UTC)
Expired: Jul 17, 2017, 5:30 PM CDT
In force: 40 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

County Todd County, MN

The radar

The Minneapolis radar (KMPX), 187 km from the middle of the area, began a volume at 21:50 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
Jul 17, 5:06 PM CDT	HAIL 1.75	3 Sw Bertha, MN
Jul 17, 5:08 PM CDT	HAIL 1.75	1 W Eagle Bend, MN
Jul 17, 5:08 PM CDT	HAIL 1.75	2 Wsw Eagle Bend, MN

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 17, 3:21 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.8 hours before the alert went out and 186 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: 1041 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 140 m²/s²
0-3 km storm-relative helicity: 214 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

530 
WUUS53 KMPX 172150
SVRMPX
MNC153-172230-
/O.NEW.KMPX.SV.W.0155.170717T2150Z-170717T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
450 PM CDT MON JUL 17 2017

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Northern Todd County in central Minnesota...

* Until 530 PM CDT

* At 450 PM CDT, a severe thunderstorm was located near Eagle Bend,
  or 22 miles northeast of Alexandria, moving northeast at 30 mph.

  HAZARD...Golf ball size hail and 60 mph wind gusts. 

  SOURCE...Public. 

  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,
  Eagle Bend around 455 PM CDT. 
  Bertha around 500 PM CDT. 
  Clarissa and Hewitt around 505 PM CDT. 
  Staples and Staples Airport around 530 PM CDT. 

Other locations impacted by this severe thunderstorm include
Philbrook.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4637 9474 4635 9470 4635 9468 4636 9467
      4623 9464 4619 9464 4608 9514 4637 9516
TIME...MOT...LOC 2150Z 246DEG 27KT 4619 9514 

HAIL...1.75IN
WIND...60MPH
 
$$

BORGHOFF

2 follow-up statements

643 
WWUS53 KMPX 172159
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
459 PM CDT MON JUL 17 2017

MNC153-172230-
/O.CON.KMPX.SV.W.0155.000000T0000Z-170717T2230Z/
Todd MN-
459 PM CDT MON JUL 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTHERN TODD COUNTY...

At 459 PM CDT, a severe thunderstorm was located near Eagle Bend, or
23 miles northeast of Alexandria, moving northeast at 25 mph.

HAZARD...Golf 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. 

This severe storm will be near...
  Eagle Bend around 505 PM CDT. 
  Bertha around 510 PM CDT. 
  Hewitt around 515 PM CDT. 
  Staples and Staples Airport around 530 PM CDT. 

Other locations impacted by this severe thunderstorm include
Philbrook.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

&&

LAT...LON 4637 9474 4635 9470 4635 9468 4636 9467
      4623 9464 4619 9464 4608 9514 4637 9516
TIME...MOT...LOC 2159Z 242DEG 21KT 4620 9512 

TORNADO...POSSIBLE
HAIL...1.75IN
WIND...60MPH
 
$$

BORGHOFF

152 
WWUS53 KMPX 172215
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
515 PM CDT MON JUL 17 2017

MNC153-172230-
/O.CON.KMPX.SV.W.0155.000000T0000Z-170717T2230Z/
Todd MN-
515 PM CDT MON JUL 17 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTHERN TODD COUNTY...

At 514 PM CDT, a severe thunderstorm was located over Eagle Bend, or
25 miles northeast of Alexandria, moving east at 25 mph.

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. 

This severe storm will be near...
  Clarissa around 520 PM CDT. 

Other locations impacted by this severe thunderstorm include
Philbrook.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4637 9474 4635 9470 4635 9468 4636 9467
      4623 9464 4619 9464 4608 9514 4637 9516
TIME...MOT...LOC 2214Z 255DEG 21KT 4619 9503 

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

BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 3:27 AM CDT	Heat Advisory	MPX	Anoka, Benton, Brown, Carver, Chippewa, Dakota and 24 more	16 hr
Jul 17, 5:24 PM CDT	Severe Thunderstorm Warning	MPX	Douglas	66 min
Jul 17, 5:29 PM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	61 min
Jul 17, 5:37 PM CDT	Tornado Warning	MPX	Morrison, Todd	38 min
Jul 17, 5:45 PM CDT	Tornado Warning	MPX	Douglas	45 min
Jul 17, 6:01 PM CDT	Severe Thunderstorm Warning	MPX	Morrison	59 min
Jul 17, 6:19 PM CDT	Tornado Warning	MPX	Morrison	41 min
Jul 17, 6:27 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Todd	63 min
Jul 17, 6:40 PM CDT	Tornado Warning	MPX	Douglas, Stearns, Todd	35 min
Jul 17, 6:47 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Kanabec, Mille Lacs, Morrison	58 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.