Alert archive / North Dakota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 2, NWS Grand Forks, ND

June 2, 2017Cavalier County, Ramsey County, Towner County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 2, 2017, 4:15 PM CDT for Cavalier County, Ramsey County, Towner County, North Dakota. It was in force for 60 min. 3 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 2, 2017, 4:15 PM CDT (21:15 UTC)
Expired: Jun 2, 2017, 5:15 PM CDT
In force: 60 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Cavalier County, ND, Ramsey County, ND, Towner County, ND

The radar

The Minot AFB radar (KMBX), 125 km from the middle of the area, began a volume at 21:15 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 2, 4:24 PM CDT	HAIL 1.25	3 Ese Hansboro, ND	A FEW VERY LARGE HAIL AMONG LOTS OF SMALL HAIL.
Jun 2, 4:38 PM CDT	HAIL 1	4 W Bisbee, ND	VERY HEAVY RAIN AND A FEW LARGE HAIL.
Jun 2, 4:50 PM CDT	HAIL 1.25	7 Sw Hansboro, ND	VERY HEAVY RAIN AND DIME TO HALF DOLLAR SIZED HAIL.

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

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.3 hours before the alert went out and 247 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: 378 J/kg
Mixed-layer CIN: -285 J/kg
Mixed-layer LCL: 1681 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 121 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

586 
WUUS53 KFGF 022115
SVRFGF
NDC019-071-095-022215-
/O.NEW.KFGF.SV.W.0002.170602T2115Z-170602T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Eastern ND/Grand Forks ND
415 PM CDT FRI JUN 2 2017

The National Weather Service in Grand Forks has issued a

* Severe Thunderstorm Warning for...
  Towner County in northeastern North Dakota...
  Western Cavalier County in northeastern North Dakota...
  Northwestern Ramsey County in northeastern North Dakota...

* Until 515 PM CDT.

* At 414 PM CDT, severe thunderstorms were located along a line
  extending from Hansboro to 8 miles north of Leeds, moving northeast
  at 15 mph.

  HAZARD...60 mph wind gusts and half dollar size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Severe thunderstorms will be near...
  Hansboro and Amourdale around 420 PM CDT. 
  Considine around 455 PM CDT. 
  Cando around 500 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4900 9950 4900 9892 4843 9891 4841 9949
TIME...MOT...LOC 2114Z 244DEG 12KT 4895 9938 4840 9938 

HAIL...1.25IN
WIND...60MPH
 
$$

gust

1 follow-up statement

600 
WWUS53 KFGF 022143
SVSFGF

Severe Weather Statement
National Weather Service Eastern ND/Grand Forks ND
443 PM CDT FRI JUN 2 2017

NDC019-071-095-022215-
/O.CON.KFGF.SV.W.0002.000000T0000Z-170602T2215Z/
Towner ND-Cavalier ND-Ramsey ND-
443 PM CDT FRI JUN 2 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR TOWNER...WESTERN CAVALIER AND NORTHWESTERN RAMSEY COUNTIES...

At 442 PM CDT, severe thunderstorms were located along a line
extending from 6 miles northeast of Hansboro to near Cando, moving
northeast at 15 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

these severe thunderstorms will remain over mainly rural areas of
Towner...western Cavalier and northwestern Ramsey Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4900 9950 4900 9892 4843 9891 4841 9949
TIME...MOT...LOC 2142Z 244DEG 12KT 4899 9925 4844 9925 

HAIL...1.25IN
WIND...60MPH
 
$$

Voelker

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 2, 4:05 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Ramsey, Towner	55 min
Jun 2, 4:48 PM CDT	Severe Thunderstorm Warning	FGF	Benson	57 min
Jun 2, 5:03 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Cavalier, Ramsey, Towner	57 min
Jun 2, 5:44 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Ramsey	45 min
Jun 2, 5:56 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Ramsey, Towner	64 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2017 Every severe thunderstorm warning in 2017

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.