Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 29, NWS Grand Forks, ND

June 9, 2021Pembina County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 9, 2021, 12:47 PM CDT for Pembina County, North Dakota. It was in force for 28 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, 12:47 PM CDT (17:47 UTC)
Expired: Jun 9, 2021, 1:15 PM CDT
In force: 28 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Pembina County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 146 km from the middle of the area, began a volume at 17:48 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, 1:10 PM CDT	TSTM WND DMG	1 W Pembina, ND	SEERAL LARGE 3 TO 5 INCH BRANCHES BROKEN DOWN IN A YARD.
Jun 9, 1:10 PM CDT	TSTM WND DMG	1 W Pembina, ND	SEVERAL LARGE 3 TO 5 INCH DIAMETER BRANCHES BROKEN DOWN IN A YARD.

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, 5.8 hours before the alert went out and 305 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.

523 
WUUS53 KFGF 091747
SVRFGF
NDC067-091830-
/O.NEW.KFGF.SV.W.0029.210609T1747Z-210609T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
1247 PM CDT Wed Jun 9 2021

The National Weather Service in Grand Forks has issued a

* Severe Thunderstorm Warning for...
  Northeastern Pembina County in northeastern North Dakota...

* Until 130 PM CDT.

* At 1246 PM CDT, a severe thunderstorm was located over Hamilton, or
  29 miles north of Grafton, moving northeast at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Pembina around 105 PM CDT.

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 4870 9749 4884 9768 4900 9751 4900 9725
      4881 9720
TIME...MOT...LOC 1746Z 231DEG 36KT 4884 9747 

HAIL...<.75IN
WIND...60MPH
 
$$

Hopkins

2 follow-up statements

336 
WWUS53 KFGF 091805
SVSFGF

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

NDC067-091830-
/O.CON.KFGF.SV.W.0029.000000T0000Z-210609T1830Z/
Pembina ND-
105 PM CDT Wed Jun 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CDT
FOR NORTHEASTERN PEMBINA COUNTY...

At 105 PM CDT, a severe thunderstorm was located over Pembina, or 38
miles north of Grafton, moving northeast at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
northeastern Pembina 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 4877 9731 4891 9736 4894 9751 4900 9751
      4900 9725 4881 9720
TIME...MOT...LOC 1805Z 231DEG 36KT 4896 9724 

HAIL...<.75IN
WIND...60MPH
 
$$

Hopkins

426 
WWUS53 KFGF 091815
SVSFGF

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

NDC067-091825-
/O.CAN.KFGF.SV.W.0029.000000T0000Z-210609T1830Z/
Pembina ND-
115 PM CDT Wed Jun 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PEMBINA COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.  However gusty winds are still possible with this
thunderstorm.

LAT...LON 4877 9731 4891 9736 4894 9751 4900 9751
      4900 9725 4881 9720
TIME...MOT...LOC 1813Z 231DEG 36KT 4903 9712 

$$

Hopkins

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 4:35 AM CDT	Special Weather Statement	FGF	Pembina	55 min
Jun 9, 12:35 PM CDT	Severe Thunderstorm Warning	FGF	Pembina, Walsh	40 min
Jun 9, 12:59 PM CDT	Severe Thunderstorm Warning	FGF	Pembina	17 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 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.