Alert archive / North Dakota / Tornado Warnings in 2007
Tornado Warning 33, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Aug 13, 2007, 3:40 PM CDT for Grand Forks County, Steele County, Traill County, North Dakota. It was in force for 65 min. 8 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
- Aug 13, 2007, 3:40 PM CDT (20:40 UTC)
- Expired
- Aug 13, 2007, 4:45 PM CDT
- In force
- 65 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
Counties Grand Forks County, ND, Steele County, ND, Traill County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 30 km from the middle of the area, began a volume at 20:41 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 13, 3:40 PM CDT | HAIL 1 | 2 W Larimore, ND | |
| Aug 13, 3:45 PM CDT | HAIL 1 | 3 S Larimore, ND | |
| Aug 13, 4:08 PM CDT | HAIL 1.75 | 9 W Thompson, ND | |
| Aug 13, 4:15 PM CDT | FUNNEL CLOUD | 4 N Hatton, ND | |
| Aug 13, 4:15 PM CDT | FUNNEL CLOUD | 6 Ese Northwood, ND | LOCATED 4N OF HATTON ON HWY 18. |
| Aug 13, 4:22 PM CDT | HAIL 1.75 | Holmes, ND | |
| Aug 13, 4:25 PM CDT | HAIL 1.75 | 2 W Reynolds, ND | REPORTED BY DEPUTY AT COUNTY ROAD 25. |
| Aug 13, 4:44 PM CDT | HAIL 1.75 | Reynolds, ND |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 13, 9:48 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 13, 2:57 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 8.7 hours before the alert went out and 267 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.
- Mixed-layer CAPE
- 1500 J/kg
- Mixed-layer CIN
- -501 J/kg
- Mixed-layer LCL
- 788 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 262 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KFGF 132040 TORFGF NDC035-091-097-132145- /O.NEW.KFGF.TO.W.0033.070813T2040Z-070813T2145Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 340 PM CDT MON AUG 13 2007 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... SOUTH CENTRAL GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA... NORTHEASTERN STEELE COUNTY IN SOUTHEAST NORTH DAKOTA... NORTHERN TRAILL COUNTY IN SOUTHEAST NORTH DAKOTA... * UNTIL 445 PM CDT * AT 337 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 2 MILES SOUTHWEST OF LARIMORE...OR 27 MILES WEST OF GRAND FORKS...MOVING TO THE SOUTHEAST AT 35 MPH. A ROTATING WALL CLOUD HAS BEEN SIGHTED 3 MILES SOUTH OF LARIMORE. * THE TORNADO WILL BE NEAR... KEMPTON AT 345 PM CDT... NORTHWOOD AT 350 PM CDT... 8 MILES SOUTHWEST OF HOLMES AT 400 PM CDT... HATTON AT 405 PM CDT... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM CDT MONDAY AFTERNOON FOR EASTERN NORTH DAKOTA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING FOR NORTHWESTERN MINNESOTA. LAT...LON 4799 9760 4789 9782 4740 9745 4759 9693 $$ DK/BH
6 follow-up statements
000 WWUS53 KFGF 132048 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 348 PM CDT MON AUG 13 2007 NDC035-091-097-132145- /O.CON.KFGF.TO.W.0033.000000T0000Z-070813T2145Z/ GRAND FORKS ND-STEELE ND-TRAILL ND- 348 PM CDT MON AUG 13 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR SOUTH CENTRAL GRAND FORKS...NORTHEASTERN STEELE AND NORTHERN TRAILL COUNTIES... AT 345 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED 3 MILES NORTH OF NORTHWOOD...OR 25 MILES SOUTHWEST OF GRAND FORKS...MOVING TO THE SOUTHEAST AT 35 MPH. QUARTER SIZE HAIL WAS REPORTED 3 MILES SOUTH OF LARIMORE. * THE TORNADO WILL BE ABOUT... 9 MILES SOUTHWEST OF HOLMES BY 355 PM CDT... HATTON BY 400 PM CDT... MAYVILLE AND PORTLAND BY 410 PM CDT... ROSEVILLE BY 415 PM CDT... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM CDT MONDAY AFTERNOON FOR EASTERN NORTH DAKOTA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING FOR NORTHWESTERN MINNESOTA. LAT...LON 4801 9757 4778 9771 4740 9742 4755 9697 $$ DK/BH
000 WWUS53 KFGF 132059 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 359 PM CDT MON AUG 13 2007 NDC035-091-097-132145- /O.CON.KFGF.TO.W.0033.000000T0000Z-070813T2145Z/ GRAND FORKS ND-STEELE ND-TRAILL ND- 359 PM CDT MON AUG 13 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR SOUTH CENTRAL GRAND FORKS...NORTHEASTERN STEELE AND NORTHERN TRAILL COUNTIES... AT 358 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED 4 MILES NORTH OF HATTON...OR 25 MILES SOUTHWEST OF GRAND FORKS... MOVING TO THE SOUTHEAST AT 55 MPH. * THE TORNADO WILL BE NEAR... MAYVILLE...PORTLAND AND ROSEVILLE BY 415 PM CDT... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM CDT MONDAY AFTERNOON FOR EASTERN NORTH DAKOTA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING FOR NORTHWESTERN MINNESOTA. LAT...LON 4799 9744 4768 9759 4738 9743 4755 9694 $$ DK/BH
000 WWUS53 KFGF 132113 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 412 PM CDT MON AUG 13 2007 NDC035-091-097-132145- /O.CON.KFGF.TO.W.0033.000000T0000Z-070813T2145Z/ GRAND FORKS ND-STEELE ND-TRAILL ND- 412 PM CDT MON AUG 13 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR SOUTHEASTERN GRAND FORKS...EXTREME NORTHEASTERN STEELE AND NORTHWESTERN TRAILL COUNTIES... AT 411 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED 4 MILES SOUTHEAST OF HATTON...OR 26 MILES SOUTHWEST OF GRAND FORKS... MOVING TO THE SOUTHEAST AT 35 MPH. SPOTTERS REPORTED GOLF BALL SIZE HAIL ON THE GROUND 9 MILES WEST OF THOMPSON. * THE TORNADO WILL BE NEAR... MAYVILLE...PORTLAND AND 6 MILES NORTHEAST OF ROSEVILLE BY 420 PM CDT... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING FOR NORTHWESTERN MINNESOTA. LAT...LON 4790 9732 4766 9754 4733 9742 4764 9690 $$ DK/BH
000
WWUS53 KFGF 132121
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
421 PM CDT MON AUG 13 2007
NDC091-132131-
/O.CAN.KFGF.TO.W.0033.000000T0000Z-070813T2145Z/
STEELE ND-
421 PM CDT MON AUG 13 2007
...THE TORNADO WARNING FOR STEELE COUNTY IS CANCELLED...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR NORTHWESTERN MINNESOTA.
LAT...LON 4779 9698 4760 9730 4738 9711 4753 9689
4764 9690
$$
NDC035-097-132145-
/O.CON.KFGF.TO.W.0033.000000T0000Z-070813T2145Z/
GRAND FORKS ND-TRAILL ND-
421 PM CDT MON AUG 13 2007
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR
SOUTHEASTERN GRAND FORKS AND NORTHEASTERN TRAILL COUNTIES...
AT 419 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED
4 MILES SOUTHEAST OF HOLMES...OR 18 MILES SOUTHWEST OF GRAND FORKS...
MOVING TO THE SOUTHEAST AT 35 MPH.
* THE TORNADO WILL BE NEAR...
BUXTON BY 430 PM CDT...
CUMMINGS BY 435 PM CDT...
IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR NORTHWESTERN MINNESOTA.
LAT...LON 4779 9698 4760 9730 4738 9711 4753 9689
4764 9690
$$
DK/BH000
WWUS53 KFGF 132131
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
430 PM CDT MON AUG 13 2007
NDC035-097-132145-
/O.CON.KFGF.TO.W.0033.000000T0000Z-070813T2145Z/
GRAND FORKS ND-TRAILL ND-
430 PM CDT MON AUG 13 2007
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR EXTREME
SOUTHEASTERN GRAND FORKS AND NORTHEASTERN TRAILL COUNTIES...
AT 428 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED
2 MILES NORTH OF BUXTON...OR 19 MILES SOUTH OF GRAND FORKS...MOVING
TO THE SOUTHEAST AT 35 MPH. THE STORM HAS ALSO HAD A HISTORY OF
PRODUCING GOLF BALL SIZE HAIL.
* THE TORNADO WILL BE NEAR...
RURAL EASTERN TRAILL COUNTY AT 440 PM CDT
IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR NORTHWESTERN MINNESOTA.
LAT...LON 4775 9696 4765 9721 4744 9700 4751 9688
4763 9690
$$
DK/BH000
WWUS53 KFGF 132141
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
441 PM CDT MON AUG 13 2007
NDC035-097-132151-
/O.EXP.KFGF.TO.W.0033.000000T0000Z-070813T2145Z/
GRAND FORKS ND-TRAILL ND-
441 PM CDT MON AUG 13 2007
...THE TORNADO WARNING FOR EXTREME SOUTHEASTERN GRAND FORKS AND
NORTHEASTERN TRAILL COUNTIES WILL EXPIRE AT 445 PM CDT...
DOPPLER RADAR INDICATED THE STORM WAS NO LONGER SEVERE AND SO THE
WARNING WILL BE ALLOWED TO EXPIRE AT 445 PM CDT.
AT 441 PM CDT...THE TORNADO HAS MOVED OUT OF EXTREME SOUTHEASTERN
GRAND FORKS AND NORTHEASTERN TRAILL COUNTIES SO THE WARNING WILL BE
ALLOWED TO EXPIRE AT 445 PM CDT.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR NORTHWESTERN MINNESOTA.
LAT...LON 4775 9696 4765 9721 4744 9700 4751 9688
4763 9690
$$
DK/BHThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 9:55 AM CDT | Severe Thunderstorm Warning | FGF | Benson | 65 min |
| Aug 13, 10:33 AM CDT | Severe Thunderstorm Warning | FGF | Eddy | 57 min |
| Aug 13, 11:38 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Griggs | 67 min |
| Aug 13, 12:42 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 50 min |
| Aug 13, 12:59 PM CDT | Severe Thunderstorm Warning | FGF | Towner | 36 min |
| Aug 13, 1:16 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Ramsey | 59 min |
| Aug 13, 1:59 PM CDT | Severe Thunderstorm Warning | FGF | Nelson, Walsh | 61 min |
| Aug 13, 2:15 PM CDT | Severe Thunderstorm Warning | FGF | Ramsey | 30 min |
| Aug 13, 2:33 PM CDT | Tornado Warning | FGF | Grand Forks, Nelson, Walsh | 57 min |
| Aug 13, 3:29 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 61 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.