Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 56, NWS Grand Forks, ND

July 23, 2021Beltrami County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 23, 2021, 3:48 PM CDT for Beltrami County, Minnesota. It was in force for 57 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, 3:48 PM CDT (20:48 UTC)
Expired: Jul 23, 2021, 4:45 PM CDT
In force: 57 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.5 in
Wind: 70.0 mph

County Beltrami County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 188 km from the middle of the area, began a volume at 20:49 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, 4:05 PM CDT	HAIL 1	2 Nne Ponemah, MN	PUBLIC REPORT OF 1 INCH HAIL IN PONEMAH.
Jul 23, 4:05 PM CDT	HAIL 1	2 Nne Ponemah, MN

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, 8.8 hours before the alert went out and 134 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.

751 
WUUS53 KFGF 232048
SVRFGF
MNC007-232145-
/O.NEW.KFGF.SV.W.0056.210723T2048Z-210723T2145Z/

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

The National Weather Service in Grand Forks has issued a

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

* Until 445 PM CDT.

* At 347 PM CDT, a severe thunderstorm was located over northeastern
  Red Lake Nation, or 43 miles north of Bemidji, moving east at 40
  mph.

  HAZARD...70 mph wind gusts and ping pong ball size hail.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           considerable tree damage. Wind damage is also likely to 
           mobile homes, roofs, and outbuildings.

* This severe thunderstorm will be near...
  Upper Red Lake around 350 PM CDT.
  Ponemah around 400 PM CDT.

Other locations in the path of this severe thunderstorm include
Shotley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4803 9518 4817 9516 4824 9458 4794 9466
TIME...MOT...LOC 2047Z 265DEG 36KT 4809 9508 

HAIL...1.50IN
WIND...70MPH
 
$$

GG

2 follow-up statements

144 
WWUS53 KFGF 232110
SVSFGF

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

MNC007-232145-
/O.CON.KFGF.SV.W.0056.000000T0000Z-210723T2145Z/
Beltrami MN-
410 PM CDT Fri Jul 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR CENTRAL BELTRAMI COUNTY...

At 410 PM CDT, a severe thunderstorm was located over southwestern 
Upper Red Lake near Ponemah, or 40 miles north of Bemidji, moving 
east at 30 mph.

HAZARD...70 mph wind gusts and ping pong ball size hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

Locations impacted include...
  Shotley and Saum.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4803 9511 4816 9509 4824 9458 4794 9466
TIME...MOT...LOC 2110Z 271DEG 36KT 4807 9486 

HAIL...1.50IN
WIND...70MPH
 
$$

GG

528 
WWUS53 KFGF 232140
SVSFGF

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

MNC007-232150-
/O.EXP.KFGF.SV.W.0056.000000T0000Z-210723T2145Z/
Beltrami MN-
440 PM CDT Fri Jul 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BELTRAMI COUNTY WILL
EXPIRE AT 445 PM CDT...
    
The severe thunderstorm which prompted the warning has weakened. 
Therefore, the warning will be allowed to expire.

LAT...LON 4803 9511 4816 9509 4824 9458 4794 9466
TIME...MOT...LOC 2140Z 265DEG 36KT 4809 9442 

$$

GG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 4:45 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	30 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.