Alert archive / Minnesota / Tornado Warnings in 2009

Tornado Warning 2, NWS Grand Forks, ND

June 17, 2009Wilkin County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jun 17, 2009, 3:55 PM CDT for Wilkin County, Minnesota. It was in force for 50 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 17, 2009, 3:55 PM CDT (20:55 UTC)
Expired
Jun 17, 2009, 4:45 PM CDT
In force
50 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon

County Wilkin County, MN

The radar

The Aberdeen radar (KABR), 164 km from the middle of the area, began a volume at 20:54 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

TimeReportWhereRemark
Jun 17, 4:40 PM CDTTORNADO2 S Doran, MNPUBLIC REPORT OF A BRIEF TOUCHDOWN REPORTED TO SHERIFFS OFFICE.
Jun 17, 4:45 PM CDTFUNNEL CLOUDTenney, MNWALL CLOUD AND WEAK FUNNEL STRENGTHENING.

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

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 8.9 hours before the alert went out and 198 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, Aberdeen, SD at 12:00Z on 2009-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 368 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 12:00Z on 2009-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 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
368 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
831 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
154 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFGF 172055
TORFGF
MNC167-172145-
/O.NEW.KFGF.TO.W.0002.090617T2055Z-090617T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
355 PM CDT WED JUN 17 2009

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN WILKIN COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 445 PM CDT

* AT 353 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 2 MILES
  NORTHWEST OF FAIRMOUNT...OR 14 MILES SOUTH OF WAHPETON...MOVING TO
  THE EAST AT 15 MPH.

* THE TORNADO WILL BE NEAR...
  TENNEY AT 435 PM CDT...
  CAMPBELL AT 445 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 4604 9658 4606 9656 4617 9657 4620 9628
      4601 9627 4602 9658
TIME...MOT...LOC 2055Z 268DEG 11KT 4607 9664

$$

G2/JK
1 follow-up statement
000 
WWUS53 KFGF 172132
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
432 PM CDT WED JUN 17 2009

MNC167-172145-
/O.CON.KFGF.TO.W.0002.000000T0000Z-090617T2145Z/
WILKIN MN-
432 PM CDT WED JUN 17 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR
SOUTHEASTERN WILKIN COUNTY...

AT 430 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED
3 MILES NORTHWEST OF TENNEY...OR 15 MILES SOUTH OF WAHPETON...MOVING
TO THE EAST AT 15 MPH.

* THE TORNADO WILL BE NEAR...
  TENNEY BY 440 PM CDT...
  CAMPBELL AND 7 MILES WEST OF NASHUA BY 445 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 4604 9658 4606 9656 4617 9657 4620 9628
      4601 9627 4602 9658
TIME...MOT...LOC 2132Z 268DEG 11KT 4607 9650

$$

HOPPES/G2

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 9:16 PM CDTFlash Flood WarningFGFClay, Wilkin13 hr
Jun 17, 2:26 AM CDTAreal Flood AdvisoryFGFWilkin11 hr
Jun 17, 9:08 AM CDTRiver Flood WarningFGFClay10 days
Jun 17, 9:08 AM CDTRiver Flood WarningFGFClay12 days
Jun 17, 9:29 AM CDTRiver Flood WarningFGFClay16 days
Jun 17, 10:01 AM CDTAreal Flood WarningFGFClay, Wilkin24 hr
Jun 17, 4:45 PM CDTTornado WarningFGFGrant, Otter Tail, Wilkin60 min

Nearby

Tornado Warnings in Minnesota, 2009Every tornado warning in 2009Tornadoes in 2009

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.