Alert archive / Minnesota / Tornado Warnings in 2017

Tornado Warning 24, NWS Grand Forks, ND

July 11, 2017Marshall County, Minnesota; Walsh County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jul 11, 2017, 5:25 PM CDT for Marshall County, Minnesota; Walsh County, North Dakota. It was in force for 50 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 11, 2017, 5:25 PM CDT (22:25 UTC)
Expired: Jul 11, 2017, 6:15 PM CDT
In force: 50 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Marshall County, MN, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 94 km from the middle of the area, began a volume at 22:25 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 11, 5:35 PM CDT	HAIL 1.5	4 Nnw Voss, ND	LARGE HAIL FELL FOR A GOOD 10 MINUTES ACROSS NORTHWEST WALSG CENTER TOWNSHIP. BEAN FIELDS STRIPPED.
Jul 11, 5:39 PM CDT	FUNNEL CLOUD	5 W Voss, ND	FUNNEL CLOUD... POSSIBLE RAIN WRAPPED TORNADO BETWEEN PISEK AND VOSS.
Jul 11, 5:39 PM CDT	TORNADO 1	2 Ssw Veseleyville, ND	PARTIALLY RAIN WRAPPED TORNADO BETWEEN PISEK AND VOSS. DAMAGE SURVEY FOUND LARGE BRANCHES DOWN AND A FEW FRESHLY SNAPPED POPLAR TREES IN SHELTER BELTS ALONG A NEARLY 2 MILE TRACK TO AROUND 4W VOSS BY 543. TRIM WAS DAMAGED ON A HOUSE AT ONE FARMSTEAD. PEAK WIND

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 11, 4:48 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 10.4 hours before the alert went out and 303 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: 34 J/kg
Mixed-layer CIN: -303 J/kg
Mixed-layer LCL: 2064 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 145 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

132 
WFUS53 KFGF 112225
TORFGF
MNC089-NDC099-112315-
/O.NEW.KFGF.TO.W.0024.170711T2225Z-170711T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Eastern ND/Grand Forks ND
525 PM CDT TUE JUL 11 2017

The National Weather Service in Grand Forks has issued a

* Tornado Warning for...
  Northwestern Marshall County in northwestern Minnesota...
  Northeastern Walsh County in northeastern North Dakota...

* Until 615 PM CDT.

* At 524 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Veseleyville, or near Grafton, moving east at 25
  mph.

  HAZARD...Tornado and golf ball size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Voss around 530 PM CDT. 
  Grafton and Minto around 540 PM CDT. 
  Oakwood and Cashel around 550 PM CDT. 
  Warsaw around 555 PM CDT. 
  Big Woods around 610 PM CDT. 

This includes Interstate 29 between mile markers 166 and 183.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4830 9762 4844 9776 4854 9705 4825 9710
TIME...MOT...LOC 2224Z 265DEG 22KT 4838 9753 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

Gust

2 follow-up statements

876 
WWUS53 KFGF 112250
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
550 PM CDT TUE JUL 11 2017

MNC089-NDC099-112315-
/O.CON.KFGF.TO.W.0024.000000T0000Z-170711T2315Z/
Marshall MN-Walsh ND-
550 PM CDT TUE JUL 11 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR WEST
CENTRAL MARSHALL AND EAST CENTRAL WALSH COUNTIES...
    
At 548 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Voss, or near Grafton, moving east at 30 mph.

HAZARD...Tornado and golf ball size hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This dangerous storm will be near...
  Grafton and Minto around 550 PM CDT. 
  Warsaw around 605 PM CDT. 
  Big Woods around 615 PM CDT. 

This includes Interstate 29 between mile markers 166 and 175.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4830 9762 4839 9764 4842 9707 4825 9710
TIME...MOT...LOC 2248Z 270DEG 28KT 4833 9743 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

Gust

512 
WWUS53 KFGF 112311
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
611 PM CDT TUE JUL 11 2017

MNC089-NDC099-112320-
/O.EXP.KFGF.TO.W.0024.000000T0000Z-170711T2315Z/
Marshall MN-Walsh ND-
611 PM CDT TUE JUL 11 2017

...THE TORNADO WARNING FOR WEST CENTRAL MARSHALL AND EAST CENTRAL
WALSH COUNTIES WILL EXPIRE AT 615 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 1100 PM CDT for northwestern
Minnesota...and northeastern North Dakota.

LAT...LON 4830 9762 4839 9764 4842 9707 4825 9710
TIME...MOT...LOC 2310Z 265DEG 22KT 4834 9723 

$$

Gust

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 11, 5:45 PM CDT	Severe Thunderstorm Warning	FGF	Kittson, Marshall	60 min
Jul 11, 6:16 PM CDT	Severe Thunderstorm Warning	FGF	Marshall, Polk	44 min
Jul 11, 6:21 PM CDT	Tornado Warning	FGF	Marshall, Polk	39 min
Jul 11, 6:36 PM CDT	Severe Thunderstorm Warning	FGF	Kittson	39 min
Jul 11, 5:09 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks, Nelson	66 min
Jul 11, 5:15 PM CDT	Tornado Warning Tornado observed	FGF	Cavalier, Towner	45 min
Jul 11, 5:35 PM CDT	Tornado Warning	FGF	Grand Forks, Walsh	40 min
Jul 11, 5:46 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks	59 min
Jul 11, 5:48 PM CDT	Tornado Warning	FGF	Cavalier, Ramsey, Walsh	42 min
Jul 11, 6:01 PM CDT	Tornado Warning	FGF	Grand Forks	44 min
Jul 11, 6:27 PM CDT	Tornado Warning	FGF	Cavalier, Pembina, Walsh	48 min
Jul 11, 6:42 PM CDT	Tornado Warning	FGF	Grand Forks, Steele, Traill	48 min
Jul 11, 6:49 PM CDT	Areal Flood Advisory	FGF	Walsh	2 hr

Nearby

Tornado Warnings in Minnesota, 2017 Tornado Warnings in North Dakota, 2017 Every tornado warning in 2017 Tornadoes 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.