Alert archive / Minnesota / Tornado Warnings in 2009

Tornado Warning 3, NWS Grand Forks, ND

June 17, 2009Grant County, Otter Tail County, Wilkin County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jun 17, 2009, 4:45 PM CDT for Grant County, Otter Tail County, Wilkin County, Minnesota. It was in force for 60 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, 4:45 PM CDT (21:45 UTC)
Expired
Jun 17, 2009, 5:45 PM CDT
In force
60 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon

Counties Grant County, MN, Otter Tail County, MN, Wilkin County, MN

The radar

The Aberdeen radar (KABR), 176 km from the middle of the area, began a volume at 21:45 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, 4:45 PM CDTFUNNEL CLOUDTenney, MNWALL CLOUD AND WEAK FUNNEL STRENGTHENING.
Jun 17, 5:08 PM CDTTORNADO4 W Nashua, MNTORNADO TOUCHDOWN REPORTED NEAR TRAVERSE COUNTY LINE.

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, 9.8 hours before the alert went out and 206 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 172145
TORFGF
MNC051-111-167-172245-
/O.NEW.KFGF.TO.W.0003.090617T2145Z-090617T2245Z/

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

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN GRANT COUNTY IN WEST CENTRAL MINNESOTA...
  SOUTHWESTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA...
  SOUTHEASTERN WILKIN COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 545 PM CDT

* AT 442 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 2 MILES EAST OF
  TENNEY...OR 18 MILES SOUTHEAST OF WAHPETON...MOVING TO THE EAST AT
  15 MPH.

* THE TORNADO WILL BE NEAR...
  NASHUA AT 505 PM CDT...
  8 MILES SOUTH OF WESTERN AT 525 PM CDT...
  WENDELL AT 545 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF A TORNADO THE SAFEST PLACE IS A BASEMENT.
GET UNDER A STAIRWAY OR A PIECE OF STURDY FURNITURE.

&&

LAT...LON 4593 9628 4601 9628 4602 9654 4616 9652
      4615 9607 4591 9611
TIME...MOT...LOC 2145Z 277DEG 12KT 4605 9639

$$

HOPPES/G2
2 follow-up statements
000 
WWUS53 KFGF 172210
SVSFGF

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

MNC051-111-167-172245-
/O.CON.KFGF.TO.W.0003.000000T0000Z-090617T2245Z/
WILKIN MN-GRANT MN-OTTER TAIL MN-
510 PM CDT WED JUN 17 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
NORTHWESTERN GRANT...SOUTHWESTERN OTTER TAIL AND SOUTHEASTERN WILKIN
COUNTIES...

AT 509 PM CDT...WEATHER SERVICE DOPPLER RADAR WAS TRACKING A TORNADO.
THE TORNADO WAS LOCATED 3 MILES NORTHWEST OF TINTAH...OR 21 MILES 
SOUTHEAST OF WAHPETON...MOVING TO THE EAST AT 10 MPH.

* THE TORNADO WILL BE NEAR...
  NASHUA BY 515 PM CDT...
  WENDELL BY 545 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF A TORNADO THE SAFEST PLACE IS A BASEMENT.
GET UNDER A STAIRWAY OR A PIECE OF STURDY FURNITURE.

&&

LAT...LON 4593 9628 4601 9628 4602 9645 4615 9642
      4615 9607 4591 9611
TIME...MOT...LOC 2209Z 284DEG 11KT 4602 9635

$$

HOPPES/G2
000 
WWUS53 KFGF 172242
SVSFGF

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

MNC051-111-167-172252-
/O.EXP.KFGF.TO.W.0003.000000T0000Z-090617T2245Z/
WILKIN MN-GRANT MN-OTTER TAIL MN-
542 PM CDT WED JUN 17 2009

...THE TORNADO WARNING FOR NORTHWESTERN GRANT...SOUTHWESTERN OTTER
TAIL AND SOUTHEASTERN WILKIN COUNTIES WILL EXPIRE AT 545 PM CDT...

AT 542 PM CDT...THE TORNADO HAS DISSIPATED IN SOUTHEASTERN WILKIN...
NORTHWESTERN GRANT AND SOUTHWESTERN OTTER TAIL COUNTIES. SO THE
WARNING WILL BE ALLOWED TO EXPIRE AT 545 PM CDT.

LAT...LON 4593 9628 4601 9628 4602 9645 4615 9642
      4615 9607 4591 9611
TIME...MOT...LOC 2242Z 284DEG 11KT 4600 9621

$$

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, 3:55 PM CDTTornado WarningFGFWilkin50 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.