Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 30, NWS Grand Forks, ND

June 9, 2021Marshall County, Roseau County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 9, 2021, 12:51 PM CDT for Marshall County, Roseau County, Minnesota. It was in force for 54 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: Jun 9, 2021, 12:51 PM CDT (17:51 UTC)
Expired: Jun 9, 2021, 1:45 PM CDT
In force: 54 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Marshall County, MN, Roseau County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 157 km from the middle of the area, began a volume at 17:52 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
Jun 9, 1:40 PM CDT	TSTM WND GST 63	2 E Roseau, MN	TIME ESTIMATED FROM RADAR.
Jun 9, 1:53 PM CDT	TSTM WND GST 59	2 E Roseau, MN	PEAK WIND MEASURED AT A RAWS STATION. TIME ESTIMATED BASED ON OTHER NEARBY OBSERVATIONS.

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, 5.9 hours before the alert went out and 189 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: 1926 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 125 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

909 
WUUS53 KFGF 091751
SVRFGF
MNC089-135-091845-
/O.NEW.KFGF.SV.W.0030.210609T1751Z-210609T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
1251 PM CDT Wed Jun 9 2021

The National Weather Service in Grand Forks has issued a

* Severe Thunderstorm Warning for...
  Northeastern Marshall County in northwestern Minnesota...
  South central Roseau County in northwestern Minnesota...

* Until 145 PM CDT.

* At 1251 PM CDT, a severe thunderstorm was located 8 miles northeast
  of Middle River, or 26 miles southwest of Roseau, moving northeast
  at 45 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* This severe thunderstorm will be near...
  Torfin and Casperson around 110 PM CDT.

Other locations in the path of this severe thunderstorm include
Wannaska, Pencer, Malung and Roseau.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4837 9599 4849 9619 4888 9577 4869 9543
TIME...MOT...LOC 1751Z 221DEG 38KT 4849 9601 

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

Hopkins

2 follow-up statements

417 
WWUS53 KFGF 091823
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
123 PM CDT Wed Jun 9 2021

MNC089-091832-
/O.CAN.KFGF.SV.W.0030.000000T0000Z-210609T1845Z/
Marshall MN-
123 PM CDT Wed Jun 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MARSHALL COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4855 9568 4855 9600 4888 9577 4869 9543
TIME...MOT...LOC 1822Z 221DEG 38KT 4874 9568 

$$

MNC135-091845-
/O.CON.KFGF.SV.W.0030.000000T0000Z-210609T1845Z/
Roseau MN-
123 PM CDT Wed Jun 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM CDT
FOR SOUTH CENTRAL ROSEAU COUNTY...

At 122 PM CDT, a severe thunderstorm was located near Malung, or 7
miles southeast of Roseau, moving northeast at 45 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

This severe thunderstorm will remain over mainly rural areas of south
central Roseau County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4855 9568 4855 9600 4888 9577 4869 9543
TIME...MOT...LOC 1822Z 221DEG 38KT 4874 9568 

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

Hopkins

543 
WWUS53 KFGF 091838
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
138 PM CDT Wed Jun 9 2021

MNC135-091848-
/O.EXP.KFGF.SV.W.0030.000000T0000Z-210609T1845Z/
Roseau MN-
138 PM CDT Wed Jun 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL ROSEAU COUNTY
WILL EXPIRE AT 145 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are 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 4855 9568 4855 9600 4888 9577 4869 9543
TIME...MOT...LOC 1838Z 221DEG 38KT 4886 9552 

$$

Hopkins

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 12:49 AM CDT	Special Weather Statement	FGF	Marshall	56 min
Jun 9, 12:54 AM CDT	Severe Thunderstorm Warning	FGF	Marshall	37 min
Jun 9, 1:11 AM CDT	Special Weather Statement	FGF	Marshall, Pennington, Polk, Red Lake	64 min
Jun 9, 2:12 AM CDT	Special Weather Statement	FGF	Marshall, Pennington	63 min
Jun 9, 3:38 AM CDT	Special Weather Statement	FGF	Kittson, Roseau	67 min
Jun 9, 4:47 AM CDT	Special Weather Statement	FGF	Lake of the Woods, Roseau	58 min
Jun 9, 1:08 PM CDT	Severe Thunderstorm Warning	FGF	Roseau	32 min
Jun 9, 1:13 PM CDT	Special Weather Statement	FGF	Pennington	47 min
Jun 9, 1:46 PM CDT	Special Weather Statement	FGF	Lake of the Woods	59 min
Jun 9, 3:07 PM CDT	Special Weather Statement	FGF	Becker, Hubbard, Otter Tail, Wadena	53 min
Jun 9, 3:15 PM CDT	Special Weather Statement	FGF	Beltrami, Clearwater	60 min
Jun 9, 4:44 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami	61 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.