Alert archive / Minnesota / Tornado Warnings in 2011

Tornado Warning 35, NWS Grand Forks, ND

July 16, 2011Kittson County, Marshall County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jul 16, 2011, 7:54 PM CDT for Kittson County, Marshall County, Minnesota. It was in force for 51 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
Jul 16, 2011, 7:54 PM CDT (00:54 UTC)
Expired
Jul 16, 2011, 8:45 PM CDT
In force
51 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon

Counties Kittson County, MN, Marshall County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 125 km from the middle of the area, began a volume at 00:58 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 watch it was issued in

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

IssuedProductOfficeLasted
Jul 16, 4:57 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 0.9 hours before the alert went out and 264 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, International Fa, MN at 00:00Z on 2011-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1181 joules per kilogram.LCLLFCEL10008507005003002001001 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, International Fa, MN at 00:00Z on 2011-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 121 square meters per square second.19395878Sfc1 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
1181 J/kg
Mixed-layer CIN
-107 J/kg
Mixed-layer LCL
1398 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
121 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.2
Supercell composite
4.9

Open this sounding in Storm Lab

The text

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

517 
WFUS53 KFGF 170054
TORFGF
MNC069-089-170145-
/O.NEW.KFGF.TO.W.0035.110717T0054Z-110717T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
754 PM CDT SAT JUL 16 2011

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN KITTSON COUNTY IN NORTHWEST MINNESOTA...
  NORTHWESTERN MARSHALL COUNTY IN NORTHWEST MINNESOTA...

* UNTIL 845 PM CDT

* AT 753 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE STORM WAS
  LOCATED 6 MILES SOUTHEAST OF ROBBIN...OR 18 MILES NORTHEAST OF
  GRAFTON...MOVING TO THE NORTHEAST AT 20 MPH.

* THE TORNADIC STORM WILL BE NEAR...
  STEPHEN AROUND 800 PM CDT.
  DONALDSON AROUND 815 PM CDT.
  KENNEDY AROUND 820 PM CDT.
  HALMA AROUND 845 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 4883 9688 4862 9651 4837 9680 4848 9713
      4856 9713
TIME...MOT...LOC 0054Z 235DEG 17KT 4853 9703

$$
DK
2 follow-up statements
898 
WWUS53 KFGF 170105
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
805 PM CDT SAT JUL 16 2011

MNC069-089-170145-
/O.CON.KFGF.TO.W.0035.000000T0000Z-110717T0145Z/
KITTSON MN-MARSHALL MN-
805 PM CDT SAT JUL 16 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN MARSHALL AND
SOUTH CENTRAL KITTSON COUNTIES IN NORTHWEST MINNESOTA UNTIL 845 PM
CDT...

AT 802 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 5 MILES SOUTHWEST
OF DONALDSON...OR 21 MILES EAST OF GRAFTON...MOVING TO THE NORTHEAST
AT 20 MPH.

THE TORNADIC STORM WILL BE NEAR...
  DONALDSON AROUND 815 PM CDT.
  KENNEDY AROUND 825 PM CDT.
  HALMA AROUND 845 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 4850 9707 4858 9706 4879 9681 4862 9651
      4839 9678
TIME...MOT...LOC 0105Z 235DEG 17KT 4853 9695

$$
DK
984 
WWUS53 KFGF 170125 RRA
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
825 PM CDT SAT JUL 16 2011

MNC069-089-170145-
/O.CON.KFGF.TO.W.0035.000000T0000Z-110717T0145Z/
KITTSON MN-MARSHALL MN-
825 PM CDT SAT JUL 16 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN MARSHALL AND
SOUTH CENTRAL KITTSON COUNTIES IN NORTHWEST MINNESOTA UNTIL 845 PM
CDT...

AT 821 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 2 MILES EAST OF
DONALDSON...OR 27 MILES NORTHEAST OF GRAFTON...MOVING TO THE
NORTHEAST AT 20 MPH.

THE TORNADIC STORM WILL AFFECT MAINLY RURAL AREAS OF NORTHWESTERN
MARSHALL AND SOUTH CENTRAL KITTSON COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4840 9681 4848 9697 4857 9692 4871 9672
      4862 9651 4839 9678
TIME...MOT...LOC 0126Z 235DEG 17KT 4859 9683

$$
DK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 8:42 PM CDTTornado WarningFGFKittson, Marshall, Roseau48 min
Jul 16, 9:34 PM CDTFlash Flood WarningFGFKittson, Roseau9 hr
Jul 16, 9:44 PM CDTSevere Thunderstorm WarningFGFKittson, Marshall, Roseau61 min
Jul 16, 10:38 PM CDTSevere Thunderstorm WarningFGFBeltrami, Marshall, Roseau37 min
Jul 16, 10:41 PM CDTAreal Flood AdvisoryFGFKittson, Marshall8 hr
Jul 16, 11:08 PM CDTSevere Thunderstorm WarningFGFMarshall52 min
Jul 16, 11:20 PM CDTSevere Thunderstorm WarningFGFKittson, Roseau40 min
Jul 17, 12:56 AM CDTSevere Thunderstorm WarningFGFBeltrami, Clearwater, Lake of the Woods, Marshall, Pennington64 min
Jul 17, 1:53 AM CDTSevere Thunderstorm WarningFGFBeltrami37 min
Jul 17, 2:25 AM CDTSevere Thunderstorm WarningFGFBeltrami25 min
Jul 17, 3:01 AM CDTSevere Thunderstorm WarningFGFBeltrami59 min

Nearby

Tornado Warnings in Minnesota, 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.