Alert archive / North Dakota / Tornado Warnings in 2011

Tornado Warning 16, NWS Grand Forks, ND

June 13, 2011Steele County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jun 13, 2011, 8:46 PM CDT for Steele County, North Dakota. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 13, 2011, 8:46 PM CDT (01:46 UTC)
Expired
Jun 13, 2011, 9:20 PM CDT
In force
34 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon

County Steele County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 27 km from the middle of the area, began a volume at 01:47 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.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 1.8 hours before the alert went out and 242 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-pSkew-T log-p diagram, Bismarck Municip, ND at 00:00Z on 2011-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 00:00Z on 2011-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2042 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
58 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

646 
WFUS53 KFGF 140146
TORFGF
NDC091-140245-
/O.NEW.KFGF.TO.W.0016.110614T0146Z-110614T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
846 PM CDT MON JUN 13 2011

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL STEELE COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 945 PM CDT

* AT 842 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE STORM WAS
  LOCATED 3 MILES SOUTHWEST OF BLABON...OR 32 MILES NORTH OF VALLEY
  CITY...MOVING TO THE NORTHEAST AT 15 MPH.

* THE TORNADIC STORM WILL BE NEAR...
  SHERBROOKE AROUND 910 PM CDT.
  GOLDEN LAKE AROUND 940 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.

&&

LAT...LON 4761 9762 4761 9748 4738 9749 4727 9786
      4740 9799
TIME...MOT...LOC 0146Z 235DEG 14KT 4738 9780

$$

HOPKINS
2 follow-up statements
140 
WWUS53 KFGF 140212
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
912 PM CDT MON JUN 13 2011

NDC091-140245-
/O.CON.KFGF.TO.W.0016.000000T0000Z-110614T0245Z/
STEELE ND-
912 PM CDT MON JUN 13 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL STEELE COUNTY IN
SOUTHEAST NORTH DAKOTA UNTIL 945 PM CDT...

AT 910 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 2 MILES SOUTHEAST
OF SHERBROOKE...OR 38 MILES NORTHEAST OF VALLEY CITY...MOVING TO THE
NORTHEAST AT 15 MPH.

THE TORNADIC STORM WILL BE NEAR...
  GOLDEN LAKE AROUND 940 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.

&&

LAT...LON 4747 9786 4761 9762 4761 9748 4738 9749
      4731 9772
TIME...MOT...LOC 0212Z 235DEG 14KT 4744 9768

$$

HOPKINS
144 
WWUS53 KFGF 140220 RRA
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
920 PM CDT MON JUN 13 2011

NDC091-140231-
/O.CAN.KFGF.TO.W.0016.000000T0000Z-110614T0245Z/
STEELE ND-
920 PM CDT MON JUN 13 2011

...THE TORNADO WARNING FOR CENTRAL STEELE COUNTY IN SOUTHEAST NORTH
DAKOTA IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

LAT...LON 4747 9786 4761 9762 4761 9748 4738 9749
      4731 9772
TIME...MOT...LOC 0221Z 235DEG 14KT 4746 9764

$$

HOPKINS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 13, 7:23 PM CDTTornado WarningFGFGrand Forks52 min
Jun 13, 8:41 PM CDTSevere Thunderstorm WarningFGFSteele39 min
Jun 13, 9:27 PM CDTAreal Flood AdvisoryFGFSteele6 hr

Nearby

Tornado Warnings in North Dakota, 2011Every tornado warning in 2011Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.