Alert archive / North Dakota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 33, NWS Grand Forks, ND

June 25, 2011Benson County, Ramsey County, Towner County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 25, 2011, 9:01 PM CDT for Benson County, Ramsey County, Towner County, North Dakota. It was in force for 59 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 25, 2011, 9:01 PM CDT (02:01 UTC)
Expired: Jun 25, 2011, 10:00 PM CDT
In force: 59 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Benson County, ND, Ramsey County, ND, Towner County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 138 km from the middle of the area, began a volume at 02:04 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 25, 9:50 PM CDT	HAIL 0.75	10 W Warwick, ND	MAINLY DIME AND PENNY SIZED HAIL COVERING THE GROUND.
Jun 25, 10:10 PM CDT	HAIL 0.88	2 Sw Tokio, ND	DIME TO NICKEL SIZED HAIL WITH VERY HEAVY RAIN.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 25, 8:01 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 2.0 hours before the alert went out and 210 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: 1619 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1448 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 78 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

467 
WUUS53 KFGF 260201
SVRFGF
NDC005-071-095-260300-
/O.NEW.KFGF.SV.W.0033.110626T0201Z-110626T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
901 PM CDT SAT JUN 25 2011

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BENSON COUNTY IN NORTHEAST NORTH DAKOTA...
  RAMSEY COUNTY IN NORTHEAST NORTH DAKOTA...
  SOUTHEASTERN TOWNER COUNTY IN NORTHEAST NORTH DAKOTA...

* UNTIL 1000 PM CDT

* AT 859 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORM WAS LOCATED 6 MILES
  NORTHEAST OF FLORA...OR 23 MILES WEST OF DEVILS LAKE...MOVING TO
  THE EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MAZA AND CHURCHS FERRY AROUND 915 PM CDT.
  CANDO AND PENN AROUND 920 PM CDT.
  FORT TOTTEN AROUND 925 PM CDT.
  ST MICHAEL AND CAMP GRAFTON AROUND 930 PM CDT.

THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM
INCLUDE DEVILS LAKE...WARWICK...CRARY...SOUTHAM AND EDMORE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DURING THUNDERSTORMS YOU SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT
STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES.

AN INTENSE LINE OF THUNDERSTORMS CAN OCCASIONALLY PRODUCE BRIEF
TORNADOES IN ADDITION TO WIDESPREAD WIND DAMAGE. FOR YOUR
PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. THE STORM HAS THE POTENTIAL TO CAUSE SERIOUS INJURY
AND SIGNIFICANT DAMAGE TO PROPERTY.

&&

LAT...LON 4856 9925 4852 9837 4802 9851 4802 9852
      4785 9856 4785 9969
TIME...MOT...LOC 0201Z 260DEG 33KT 4801 9931
WIND...HAIL 60MPH 1.00IN

$$

JR

2 follow-up statements

442 
WWUS53 KFGF 260243
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
943 PM CDT SAT JUN 25 2011

NDC005-071-095-260300-
/O.CON.KFGF.SV.W.0033.000000T0000Z-110626T0300Z/
BENSON ND-RAMSEY ND-TOWNER ND-
943 PM CDT SAT JUN 25 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
TOWNER...RAMSEY AND BENSON COUNTIES IN NORTHEAST NORTH DAKOTA UNTIL
1000 PM CDT...

AT 941 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 2 MILES NORTHEAST OF DERRICK TO 4
MILES SOUTHEAST OF DEVILS LAKE TO 6 MILES EAST OF SHEYENNE...MOVING
TO THE EAST AT 40 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  TOKIO AND EDMORE AROUND 950 PM CDT.
  SOUTHAM AND CRARY AROUND 955 PM CDT.
  WARWICK AND DOYON AROUND 1000 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DURING THUNDERSTORMS YOU SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT
STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES.

IF ON OR NEAR DEVILS LAKE...GET OUT OF THE WATER AND MOVE INDOORS OR 
INSIDE A VEHICLE. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO 
BE STRUCK BY LIGHTNING. IN ADDITION...THUNDERSTORMS CAN PRODUCE 
LARGE CAPSIZING WAVES...EVEN ON SMALL BODIES OF WATER. MOVE INTO 
DOCK AND SEEK SAFE SHELTER NOW. DON'T BE CAUGHT ON THE WATER IN A 
THUNDERSTORM.

&&

LAT...LON 4856 9925 4852 9837 4802 9851 4802 9852
      4785 9856 4785 9969
TIME...MOT...LOC 0243Z 260DEG 33KT 4850 9849 4808 9878
          4785 9895

$$

JR

104 
WWUS53 KFGF 260256
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
956 PM CDT SAT JUN 25 2011

NDC005-071-095-260306-
/O.EXP.KFGF.SV.W.0033.000000T0000Z-110626T0300Z/
BENSON ND-RAMSEY ND-TOWNER ND-
956 PM CDT SAT JUN 25 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TOWNER...RAMSEY
AND BENSON COUNTIES IN NORTHEAST NORTH DAKOTA WILL EXPIRE AT 1000 PM
CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED.  
HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THESE 
THUNDERSTORMS.

REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR 
SOUTHEASTERN BENSON COUNTY UNTIL 1015.

LAT...LON 4856 9925 4852 9837 4802 9851 4802 9852
      4785 9856 4785 9969
TIME...MOT...LOC 0256Z 260DEG 33KT 4852 9831 4810 9860
          4787 9878

$$

JR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 7:54 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Cavalier, Ramsey, Towner	66 min
Jun 25, 8:32 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy	58 min
Jun 25, 8:53 PM CDT	Areal Flood Advisory	FGF	Benson, Eddy, Ramsey, Towner	8 hr
Jun 25, 9:29 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy	46 min
Jun 25, 10:02 PM CDT	Severe Thunderstorm Warning	FGF	Benson, Eddy, Nelson, Ramsey	46 min
Jun 25, 10:17 PM CDT	Severe Thunderstorm Warning	FGF	Eddy, Nelson	58 min
Jun 25, 10:43 PM CDT	Flash Flood Warning	FGF	Eddy	7 hr
Jun 25, 10:59 PM CDT	Areal Flood Advisory	FGF	Benson, Grand Forks, Nelson, Ramsey, Walsh	7 hr
Jun 26, 5:57 AM CDT	Areal Flood Advisory	FGF	Ransom, Richland, Sargent	6 hr

Nearby

Severe Thunderstorm Warnings in North Dakota, 2011 Every severe thunderstorm warning in 2011

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.