Alert archive / Minnesota / Tornado Warnings in 2023

Tornado Warning 13, NWS Grand Forks, ND

July 13, 2023Polk County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jul 13, 2023, 5:15 PM CDT for Polk County, Minnesota. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 13, 2023, 5:15 PM CDT (22:15 UTC)
Expired: Jul 13, 2023, 5:47 PM CDT
In force: 32 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Polk County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 81 km from the middle of the area, began a volume at 22:16 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.

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 10.3 hours before the alert went out and 247 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: 969 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

848 
WFUS53 KFGF 132215
TORFGF
MNC119-132300-
/O.NEW.KFGF.TO.W.0013.230713T2215Z-230713T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Grand Forks ND
515 PM CDT Thu Jul 13 2023

The National Weather Service in Grand Forks has issued a

* Tornado Warning for...
  South central Polk County in northwestern Minnesota...

* Until 600 PM CDT.
    
* At 514 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Melvin, or 36 miles south of Thief River Falls,
  moving east at 25 mph.

  HAZARD...Tornado and quarter 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.

* Locations impacted include...
  Fertile, Winger, Maple Bay and Melvin. 

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 4753 9650 4771 9640 4757 9581 4750 9600
      4750 9631
TIME...MOT...LOC 2214Z 291DEG 22KT 4760 9634 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

BH

2 follow-up statements

275 
WWUS53 KFGF 132230
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
530 PM CDT Thu Jul 13 2023

MNC119-132300-
/O.CON.KFGF.TO.W.0013.000000T0000Z-230713T2300Z/
Polk MN-
530 PM CDT Thu Jul 13 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR SOUTH
CENTRAL POLK COUNTY...
    
At 529 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Fertile, or 37 miles south of Thief River Falls,
moving east at 25 mph.

HAZARD...Tornado and quarter 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.

Locations impacted include...
Fertile, Winger and Maple Bay. 

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 4750 9634 4767 9622 4757 9581 4750 9600
TIME...MOT...LOC 2229Z 291DEG 22KT 4757 9621 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

BH

157 
WWUS53 KFGF 132247
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
547 PM CDT Thu Jul 13 2023

MNC119-132257-
/O.CAN.KFGF.TO.W.0013.000000T0000Z-230713T2300Z/
Polk MN-
547 PM CDT Thu Jul 13 2023

...THE TORNADO WARNING FOR SOUTH CENTRAL POLK COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled. However heavy rain is 
still possible with this thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Grand Forks.

LAT...LON 4750 9634 4767 9622 4757 9581 4750 9600
TIME...MOT...LOC 2245Z 291DEG 22KT 4753 9606 

$$

BH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 3:08 PM CDT	Special Weather Statement	FGF	Polk	37 min
Jul 13, 3:18 PM CDT	Severe Thunderstorm Warning	FGF	Pennington, Polk, Red Lake	42 min
Jul 13, 3:46 PM CDT	Severe Thunderstorm Warning	FGF	Clay	59 min
Jul 13, 3:57 PM CDT	Special Weather Statement	FGF	Pennington	33 min
Jul 13, 4:03 PM CDT	Severe Thunderstorm Warning	FGF	Clay, Norman, Polk	42 min
Jul 13, 4:20 PM CDT	Severe Thunderstorm Warning	FGF	Clay, Wilkin	55 min
Jul 13, 4:26 PM CDT	Special Weather Statement	FGF	Pennington	34 min
Jul 13, 4:39 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Clay, Mahnomen, Norman	66 min
Jul 13, 4:46 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Becker, Clay, Otter Tail, Wilkin	59 min
Jul 13, 5:09 PM CDT	Special Weather Statement	FGF	Grant	36 min
Jul 13, 5:22 PM CDT	Severe Thunderstorm Warning	FGF	Roseau	68 min
Jul 13, 5:36 PM CDT	Severe Thunderstorm Warning	FGF	Otter Tail, Wadena	54 min
Jul 13, 5:40 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Clay	65 min
Jul 13, 5:41 PM CDT	Special Weather Statement	FGF	Grant	34 min
Jul 13, 6:14 PM CDT	Tornado Warning	FGF	Roseau	46 min
Jul 13, 6:18 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FGF	Otter Tail	35 min
Jul 13, 6:59 PM CDT	Severe Thunderstorm Warning	FGF	Roseau	46 min

Nearby

Tornado Warnings in Minnesota, 2023 Every tornado warning in 2023 Tornadoes in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.