Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 73, NWS Grand Forks, ND

July 28, 2021Becker County, Clearwater County, Hubbard County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 28, 2021, 6:00 AM CDT for Becker County, Clearwater County, Hubbard County, Minnesota. It was in force for 60 min. 1 report 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 28, 2021, 6:00 AM CDT (11:00 UTC)
Expired: Jul 28, 2021, 7:00 AM CDT
In force: 60 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Becker County, MN, Clearwater County, MN, Hubbard County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 172 km from the middle of the area, began a volume at 11:02 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 28, 6:52 AM CDT	HAIL 1	5 S Nevis, MN	A FEW LARGE HAIL IN VERY HEAVY RAIN AND STRONG WINDS REPORTED NEAR ISLAND LAKE. TIME ESTIMATED BASED ON RADAR.

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 00:00Z, 11.0 hours before the alert went out and 214 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: 1925 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 152 m²/s²
0-3 km storm-relative helicity: 264 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

998 
WUUS53 KFGF 281100
SVRFGF
MNC005-029-057-281200-
/O.NEW.KFGF.SV.W.0073.210728T1100Z-210728T1200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
600 AM CDT Wed Jul 28 2021

The National Weather Service in Grand Forks has issued a

* Severe Thunderstorm Warning for...
  Hubbard County in north central Minnesota...
  Northeastern Becker County in northwestern Minnesota...
  Southeastern Clearwater County in northwestern Minnesota...

* Until 700 AM CDT.

* At 600 AM CDT, a severe thunderstorm was located near Long Lost
  Lake, or 28 miles southwest of Bemidji, moving east at 40 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* This severe thunderstorm will be near...
  Lake Itasca around 610 AM CDT.

Other locations in the path of this severe thunderstorm include Lake
George, Emmaville, Akeley and Benedict.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4704 9544 4729 9541 4729 9467 4681 9469
TIME...MOT...LOC 1100Z 288DEG 34KT 4722 9535 

HAIL...1.00IN
WIND...<50MPH
 
$$

JR

2 follow-up statements

115 
WWUS53 KFGF 281126
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
626 AM CDT Wed Jul 28 2021

MNC005-029-281135-
/O.CAN.KFGF.SV.W.0073.000000T0000Z-210728T1200Z/
Becker MN-Clearwater MN-
626 AM CDT Wed Jul 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BECKER AND
SOUTHEASTERN CLEARWATER COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4681 9469 4696 9516 4703 9517 4729 9517
      4729 9467
TIME...MOT...LOC 1125Z 292DEG 34KT 4711 9503 

$$

MNC057-281200-
/O.CON.KFGF.SV.W.0073.000000T0000Z-210728T1200Z/
Hubbard MN-
626 AM CDT Wed Jul 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 AM CDT
FOR HUBBARD COUNTY...

At 625 AM CDT, a severe thunderstorm was located near Emmaville, or
26 miles south of Bemidji, moving southeast at 40 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.

Locations impacted include...
  Emmaville, Nevis, Akeley and Chamberlain.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4681 9469 4696 9516 4703 9517 4729 9517
      4729 9467
TIME...MOT...LOC 1125Z 292DEG 34KT 4711 9503 

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

JR

448 
WWUS53 KFGF 281201
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
701 AM CDT Wed Jul 28 2021

MNC057-281210-
/O.EXP.KFGF.SV.W.0073.000000T0000Z-210728T1200Z/
Hubbard MN-
701 AM CDT Wed Jul 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR HUBBARD COUNTY HAS EXPIRED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been allowed to expire.  However small hail is still possible with
this thunderstorm.

LAT...LON 4681 9469 4696 9516 4703 9517 4729 9517
      4729 9467
TIME...MOT...LOC 1200Z 288DEG 34KT 4702 9461 

$$

JR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 3:43 AM CDT	Severe Thunderstorm Warning	FGF	Wilkin	39 min
Jul 28, 4:12 AM CDT	Special Weather Statement	FGF	Grant	63 min
Jul 28, 4:20 AM CDT	Special Weather Statement	FGF	Clay	55 min
Jul 28, 4:31 AM CDT	Special Weather Statement	FGF	Wadena	29 min
Jul 28, 4:40 AM CDT	Special Weather Statement	FGF	Mahnomen	65 min
Jul 28, 5:15 AM CDT	Special Weather Statement	FGF	Hubbard	60 min
Jul 28, 7:04 AM CDT	Special Weather Statement	FGF	Beltrami	56 min
Jul 28, 8:32 AM CDT	Special Weather Statement	FGF	Hubbard	43 min
Jul 28, 9:44 AM CDT	Special Weather Statement	FGF	Beltrami	61 min
Jul 28, 9:56 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami	19 min
Jul 28, 11:20 AM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	55 min
Jul 28, 6:03 PM CDT	Special Weather Statement	FGF	Beltrami	27 min
Jul 28, 6:40 PM CDT	Special Weather Statement	FGF	Beltrami	35 min
Jul 28, 6:47 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	28 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.