Alert archive / Minnesota / Tornado Warnings in 2009

Tornado Warning 16, NWS Grand Forks, ND

June 26, 2009Polk County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jun 26, 2009, 8:51 PM CDT for Polk County, Minnesota. It was in force for 39 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 26, 2009, 8:51 PM CDT (01:51 UTC)
Expired
Jun 26, 2009, 9:30 PM CDT
In force
39 min
Issued by
NWS Grand Forks, ND
Area
Storm-based polygon

County Polk County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 58 km from the middle of the area, began a volume at 01:50 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
Jun 26, 2:53 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 26, 6:43 PM CDTTornado WatchSPC4 hr

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 1.9 hours before the alert went out and 263 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 2009-06-27Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 00:00Z on 2009-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2632 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
23 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.

000 
WFUS53 KFGF 270151
TORFGF
MNC119-270230-
/O.NEW.KFGF.TO.W.0016.090627T0151Z-090627T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
851 PM CDT FRI JUN 26 2009

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL POLK COUNTY IN NORTHWEST MINNESOTA...

* UNTIL 930 PM CDT

* AT 849 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR ELDRED...OR
  20 MILES SOUTHEAST OF GRAND FORKS...MOVING TO THE EAST AT 25 MPH.

* THE TORNADO WILL BE NEAR...
  CROOKSTON AT 915 PM CDT...
  HAROLD AT 920 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT SATURDAY MORNING
FOR NORTHWEST MINNESOTA AND EASTERN NORTH DAKOTA.

A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CDT
FRIDAY EVENING FOR NORTHWEST MINNESOTA AND NORTHEAST NORTH DAKOTA.

&&

LAT...LON 4790 9650 4765 9645 4759 9683 4779 9687
TIME...MOT...LOC 0150Z 257DEG 25KT 4769 9680

$$

DK/JK
3 follow-up statements
000 
WWUS53 KFGF 270156
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
856 PM CDT FRI JUN 26 2009

MNC119-270230-
/O.CON.KFGF.TO.W.0016.000000T0000Z-090627T0230Z/
POLK MN-
856 PM CDT FRI JUN 26 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR WESTERN 
POLK COUNTY...

AT 855 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED
NEAR ELDRED...OR 22 MILES SOUTHEAST OF GRAND FORKS...MOVING TO THE
EAST AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  CROOKSTON BY 915 PM CDT...
  HAROLD BY 920 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT SATURDAY MORNING
FOR NORTHWEST MINNESOTA AND EASTERN NORTH DAKOTA.

A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CDT
FRIDAY EVENING FOR NORTHWEST MINNESOTA AND NORTHEAST NORTH DAKOTA.

&&

LAT...LON 4790 9650 4765 9645 4759 9683 4779 9687
TIME...MOT...LOC 0156Z 257DEG 25KT 4770 9674

$$

DK/JK
000 
WWUS53 KFGF 270210
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
910 PM CDT FRI JUN 26 2009

MNC119-270230-
/O.CON.KFGF.TO.W.0016.000000T0000Z-090627T0230Z/
POLK MN-
910 PM CDT FRI JUN 26 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR CENTRAL
POLK COUNTY...

AT 909 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED
5 MILES SOUTH OF CROOKSTON...OR 25 MILES SOUTHEAST OF GRAND FORKS...
MOVING TO THE EAST AT 25 MPH.

* THE TORNADO WILL BE NEAR...
  CROOKSTON BY 915 PM CDT...
  HAROLD BY 925 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT SATURDAY MORNING
FOR NORTHWEST MINNESOTA AND EASTERN NORTH DAKOTA.

A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CDT
FRIDAY EVENING FOR NORTHWEST MINNESOTA AND NORTHEAST NORTH DAKOTA.

&&

LAT...LON 4790 9650 4765 9645 4759 9683 4779 9687
TIME...MOT...LOC 0210Z 258DEG 23KT 4771 9663

$$

DK/JK
000 
WWUS53 KFGF 270228
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
928 PM CDT FRI JUN 26 2009

MNC119-270239-
/O.EXP.KFGF.TO.W.0016.000000T0000Z-090627T0230Z/
POLK MN-
928 PM CDT FRI JUN 26 2009

...THE TORNADO WARNING FOR CENTRAL POLK COUNTY WILL EXPIRE AT 930 PM
CDT...

DOPPLER RADAR INDICATED THE STORM WAS NO LONGER SEVERE AND SO THE
WARNING WILL BE ALLOWED TO EXPIRE AT 930 PM CDT. 

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT SATURDAY MORNING
FOR NORTHWEST MINNESOTA AND EASTERN NORTH DAKOTA.

A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CDT
FRIDAY EVENING FOR NORTHWEST MINNESOTA AND NORTHEAST NORTH DAKOTA.

LAT...LON 4790 9650 4765 9645 4759 9683 4779 9687
TIME...MOT...LOC 0229Z 258DEG 23KT 4773 9645

$$

DK/JK

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 7:12 PM CDTFlash Flood WarningFGFPolk14 hr
Jun 26, 7:45 PM CDTTornado WarningFGFPolk60 min
Jun 26, 8:45 PM CDTSpecial Weather StatementFGFPennington, Polk60 min
Jun 26, 9:06 PM CDTTornado WarningFGFNorman, Polk54 min
Jun 26, 10:01 PM CDTSpecial Weather StatementFGFNorman59 min
Jun 26, 10:11 PM CDTFlash Flood WarningFGFNorman, Polk11 hr
Jun 27, 8:53 AM CDTAreal Flood WarningFGFMarshall, Norman, Pennington, Polk, Red Lake3 days
Jun 27, 9:57 AM CDTRiver Flood WarningFGFKittson6 days
Jun 27, 10:33 AM CDTRiver Flood WarningFGFPolk5 days
Jun 27, 10:33 AM CDTRiver Flood WarningFGFMarshall, Polk6 days

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.