Alert archive / North Dakota / Tornado Warnings in 2007
Tornado Warning 31, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Aug 10, 2007, 2:35 PM CDT for Nelson County, North Dakota. It was in force for 40 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 10, 2007, 2:35 PM CDT (19:35 UTC)
- Expired
- Aug 10, 2007, 3:15 PM CDT
- In force
- 40 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
County Nelson County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 92 km from the middle of the area, began a volume at 19:36 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 nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 7.6 hours before the alert went out and 225 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
- 1398 J/kg
- Mixed-layer CIN
- -392 J/kg
- Mixed-layer LCL
- 1454 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 73 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 101935 TORFGF NDC063-102015- /O.NEW.KFGF.TO.W.0031.070810T1935Z-070810T2015Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 235 PM CDT FRI AUG 10 2007 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... CENTRAL NELSON COUNTY IN NORTHEAST NORTH DAKOTA... * UNTIL 315 PM CDT * AT 230 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 3 MILES NORTHWEST OF STUMP LAKE...OR 22 MILES SOUTHEAST OF DEVILS LAKE... MOVING TO THE NORTHEAST AT 30 MPH. * THE TORNADO WILL BE NEAR... LAKOTA AT 245 PM CDT... MAPES AT 255 PM CDT... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. 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 4800 9849 4783 9846 4808 9804 4811 9821 $$ WJB
2 follow-up statements
000 WWUS53 KFGF 101958 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 256 PM CDT FRI AUG 10 2007 NDC063-102015- /O.CON.KFGF.TO.W.0031.000000T0000Z-070810T2015Z/ NELSON ND- 256 PM CDT FRI AUG 10 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR CENTRAL NELSON COUNTY... AT 250 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. AT ABOUT 230 PM A TOUCHDOWN WAS REPORTED BY A CITIZEN NEAR STUMP LAKE. AT THE SAME TIME A TREE PIERCED THE ROOF OF A HOUSE IN THE SAME AREA. THE TORNADO WAS LOCATED 3 MILES NORTHEAST OF LAKOTA...OR 26 MILES EAST OF DEVILS LAKE...MOVING TO THE NORTHEAST AT 30 MPH. IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. IF YOU ARE IN THE PATH OF A TORNADO THE SAFEST PLACE IS A BASEMENT. GET UNDER A STAIRWAY OR A PIECE OF STURDY FURNITURE. LAT...LON 4800 9849 4783 9846 4808 9804 4811 9821 $$ WJB
000 WWUS53 KFGF 102016 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 316 PM CDT FRI AUG 10 2007 NDC063-102026- /O.EXP.KFGF.TO.W.0031.000000T0000Z-070810T2015Z/ NELSON ND- 316 PM CDT FRI AUG 10 2007 ...THE TORNADO WARNING FOR CENTRAL NELSON COUNTY EXPIRED AT 315 PM CDT... AT 316 PM CDT...THE TORNADO HAS MOVED OUT OF CENTRAL NELSON COUNTY. SO THE WARNING WAS ALLOWED TO EXPIRE AT 315 PM CDT. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING FOR NORTHWESTERN MINNESOTA. LAT...LON 4800 9849 4783 9846 4808 9804 4811 9821 $$ WB/JK
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 11:23 AM CDT | Severe Thunderstorm Warning | FGF | Benson | 67 min |
| Aug 10, 12:31 PM CDT | Severe Thunderstorm Warning | FGF | Benson | 32 min |
| Aug 10, 1:58 PM CDT | Severe Thunderstorm Warning | FGF | Benson | 47 min |
| Aug 10, 2:10 PM CDT | Tornado Warning | FGF | Benson, Ramsey | 44 min |
| Aug 10, 3:14 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 46 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.