Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 57, NWS Grand Forks, ND

July 23, 2021Beltrami County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 23, 2021, 4:45 PM CDT for Beltrami County, Minnesota. It was in force for 30 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 23, 2021, 4:45 PM CDT (21:45 UTC)
Expired: Jul 23, 2021, 5:15 PM CDT
In force: 30 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Beltrami County, MN

The radar

The Duluth radar (KDLH), 210 km from the middle of the area, began a volume at 21:45 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 23, 4:53 PM CDT	HAIL 2	N Shooks, MN	NUMEROUS 1 INCH DIAMETER HAIL WITH A FEW TO 2 INCHES. EARLIER HAIL WAS PEA TO SMALL MARBLE SIZED.
Jul 23, 4:53 PM CDT	HAIL 2	Shooks, MN	NUMEROUS 1 HAIL STONES WITH 2 ONES MIXED IN.

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

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 9.8 hours before the alert went out and 116 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: 470 J/kg
Mixed-layer CIN: -131 J/kg
Mixed-layer LCL: 725 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

340 
WUUS53 KFGF 232145
SVRFGF
MNC007-232215-
/O.NEW.KFGF.SV.W.0057.210723T2145Z-210723T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
445 PM CDT Fri Jul 23 2021

The National Weather Service in Grand Forks has issued a

* Severe Thunderstorm Warning for...
  East central Beltrami County in north central Minnesota...

* Until 515 PM CDT.

* At 444 PM CDT, a severe thunderstorm was located over Kelliher, or
  35 miles northeast of Bemidji, moving east 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...
  Shooks around 450 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4784 9456 4802 9455 4802 9442 4782 9442
TIME...MOT...LOC 2144Z 273DEG 13KT 4792 9447 

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

GG

2 follow-up statements

512 
WWUS53 KFGF 232201
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
501 PM CDT Fri Jul 23 2021

MNC007-232215-
/O.CON.KFGF.SV.W.0057.000000T0000Z-210723T2215Z/
Beltrami MN-
501 PM CDT Fri Jul 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR EASTERN BELTRAMI COUNTY...

At 458 PM CDT, a severe thunderstorm was located near Shooks, or 37 
miles northeast of Bemidji, moving east 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 slowly move east from Shooks, over 
mainly rural areas of far eastern Beltrami County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4783 9452 4796 9453 4797 9442 4782 9442
TIME...MOT...LOC 2158Z 273DEG 13KT 4792 9439 

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

GG

831 
WWUS53 KFGF 232206
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
506 PM CDT Fri Jul 23 2021

MNC007-232215-
/O.EXP.KFGF.SV.W.0057.000000T0000Z-210723T2215Z/
Beltrami MN-
506 PM CDT Fri Jul 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN BELTRAMI COUNTY WILL
EXPIRE AT 515 PM CDT...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
north central Minnesota.

LAT...LON 4783 9452 4796 9453 4797 9442 4782 9442
TIME...MOT...LOC 2205Z 273DEG 13KT 4792 9435 

$$

GG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 3:48 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	57 min
Jul 23, 6:22 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Hubbard	27 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2021 Every severe thunderstorm warning in 2021

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.