Alert archive / North Dakota / Tornado Warnings in 2007

Tornado Warning 43, NWS Grand Forks, ND

August 26, 2007Steele County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Aug 26, 2007, 10:17 PM CDT for Steele County, North Dakota. 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
Aug 26, 2007, 10:17 PM CDT (03:17 UTC)
Expired
Aug 26, 2007, 10:56 PM CDT
In force
39 min
Issued by
NWS Grand Forks, ND
Area
Counties, with a storm outline in the text

County Steele County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 26 km from the middle of the area, began a volume at 03:17 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
Aug 26, 5:10 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 3.3 hours before the alert went out and 248 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 00:00Z on 2007-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1997 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, Bismarck Municip, ND at 00:00Z on 2007-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.193958Sfc1 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
1997 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
2248 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.9

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFGF 270317
TORFGF
NDC091-270415-
/O.NEW.KFGF.TO.W.0043.070827T0317Z-070827T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1017 PM CDT SUN AUG 26 2007

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN STEELE COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 1115 PM CDT

* AT 1013 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
  SOUTHWEST OF NORTHWOOD...OR 32 MILES SOUTHWEST OF GRAND FORKS...
  MOVING TO THE SOUTH AT 15 MPH.

* THE TORNADO WILL BE NEAR...
  GOLDEN LAKE AT 1105 PM CDT...

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 1100 PM CDT SUNDAY EVENING
FOR NORTHWESTERN MINNESOTA.

LAT...LON 4767 9779 4750 9770 4750 9749 4766 9750

$$

JK/BB
2 follow-up statements
000 
WWUS53 KFGF 270332
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1031 PM CDT SUN AUG 26 2007

NDC091-270415-
/O.CON.KFGF.TO.W.0043.000000T0000Z-070827T0415Z/
STEELE ND-
1031 PM CDT SUN AUG 26 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT FOR
NORTHEASTERN STEELE COUNTY...

AT 1030 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED
7 MILES NORTH OF GOLDEN LAKE...OR 33 MILES SOUTHWEST OF GRAND
FORKS...MOVING TO THE SOUTHEAST AT 10 MPH.

* THE TORNADO WILL BE NEAR...
  GOLDEN LAKE BY 1110 PM CDT...

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 1100 PM CDT SUNDAY EVENING
FOR NORTHWESTERN MINNESOTA.

LAT...LON 4767 9779 4750 9770 4750 9749 4766 9750

$$

JK/BB
000 
WWUS53 KFGF 270356
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1055 PM CDT SUN AUG 26 2007

NDC091-270405-
/O.CAN.KFGF.TO.W.0043.000000T0000Z-070827T0415Z/
STEELE ND-
1055 PM CDT SUN AUG 26 2007

...THE TORNADO WARNING FOR NORTHEASTERN STEELE COUNTY IS CANCELLED...

AT 1055 PM CDT...THE THUNDERSTORM WHICH WAS CAPABLE OF PRODUCING A 
TORNADO HAS WEAKENED AND MOVED OUT OF NORTHEASTERN STEELE COUNTY. 
THEREFORE...THE WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT SUNDAY EVENING
FOR NORTHWESTERN MINNESOTA.

LAT...LON 4767 9779 4750 9770 4750 9749 4766 9750

$$

JK/BB

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 7:17 PM CDTTornado WarningFGFPembina, Walsh58 min
Aug 26, 7:25 PM CDTSevere Thunderstorm WarningFGFNelson65 min
Aug 26, 7:50 PM CDTTornado WarningFGFGrand Forks, Nelson55 min
Aug 26, 8:41 PM CDTTornado WarningFGFGrand Forks64 min
Aug 26, 9:39 PM CDTSevere Thunderstorm WarningFGFTraill66 min
Aug 26, 9:44 PM CDTSevere Thunderstorm WarningFGFGrand Forks61 min
Aug 26, 9:51 PM CDTTornado WarningFGFGrand Forks54 min
Aug 26, 10:42 PM CDTSevere Thunderstorm WarningFGFTraill63 min
Aug 26, 10:44 PM CDTSevere Thunderstorm WarningFGFGrand Forks61 min
Aug 27, 3:05 PM CDTSevere Thunderstorm WarningFGFBarnes55 min

Nearby

Tornado Warnings in North Dakota, 2007Every tornado warning in 2007Tornadoes in 2007

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.