Alert archive / North Dakota / Tornado Warnings in 2011

Tornado Warning 5, NWS Grand Forks, ND

May 27, 2011Barnes County, Cass County, North Dakota

NWS Grand Forks, ND issued this tornado warning at May 27, 2011, 5:31 PM CDT for Barnes County, Cass County, North Dakota. It was in force for 44 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
May 27, 2011, 5:31 PM CDT (22:31 UTC)
Expired
May 27, 2011, 6:15 PM CDT
In force
44 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon

Counties Barnes County, ND, Cass County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 48 km from the middle of the area, began a volume at 22:30 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 12:00Z, 10.5 hours before the alert went out and 236 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 12:00Z on 2011-05-27Temperature 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 12:00Z on 2011-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -85 square meters per square second.1939587897Sfc1 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
1017 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
-85 m²/s²
0-3 km storm-relative helicity
15 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.

645 
WFUS53 KFGF 272231
TORFGF
NDC003-017-272315-
/O.NEW.KFGF.TO.W.0005.110527T2231Z-110527T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
531 PM CDT FRI MAY 27 2011

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN BARNES COUNTY IN SOUTHEAST NORTH DAKOTA...
  NORTHWESTERN CASS COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 615 PM CDT

* AT 526 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE STORM WAS
  LOCATED 7 MILES SOUTH OF PILLSBURY...OR 18 MILES NORTHEAST OF
  VALLEY CITY...MOVING TO THE EAST AT 15 MPH.

* THE TORNADIC STORM WILL BE NEAR...
  PAGE AROUND 555 PM CDT.
  AYR AROUND 610 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 4723 9768 4723 9741 4700 9739 4700 9784
      4720 9783
TIME...MOT...LOC 2231Z 265DEG 15KT 4711 9773

$$

HOPKINS
2 follow-up statements
328 
WWUS53 KFGF 272254
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
554 PM CDT FRI MAY 27 2011

NDC003-017-272315-
/O.CON.KFGF.TO.W.0005.000000T0000Z-110527T2315Z/
BARNES ND-CASS ND-
554 PM CDT FRI MAY 27 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN CASS AND
NORTHEASTERN BARNES COUNTIES IN SOUTHEAST NORTH DAKOTA UNTIL 615 PM
CDT...

AT 549 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 4 MILES SOUTHWEST
OF PAGE...OR 23 MILES NORTHEAST OF VALLEY CITY...MOVING TO THE EAST
AT 15 MPH.

THE TORNADIC STORM WILL BE NEAR...
  AYR AROUND 610 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 4701 9774 4722 9774 4722 9773 4723 9741
      4700 9739
TIME...MOT...LOC 2254Z 265DEG 15KT 4712 9759

$$

HOPKINS
241 
WWUS53 KFGF 272307
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
607 PM CDT FRI MAY 27 2011

NDC003-017-272317-
/O.EXP.KFGF.TO.W.0005.000000T0000Z-110527T2315Z/
BARNES ND-CASS ND-
607 PM CDT FRI MAY 27 2011

...THE TORNADO WARNING FOR NORTHWESTERN CASS AND NORTHEASTERN BARNES
COUNTIES IN SOUTHEAST NORTH DAKOTA WILL EXPIRE AT 615 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 4701 9774 4722 9774 4722 9773 4723 9741
      4700 9739
TIME...MOT...LOC 2307Z 265DEG 15KT 4712 9751

$$

HOPKINS

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 4:55 PM CDTTornado WarningFGFBarnes50 min
May 27, 5:51 PM CDTTornado WarningFGFBarnes, Cass24 min

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.