Alert archive / North Dakota / Tornado Warnings in 2007
Tornado Warning 32, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Aug 13, 2007, 2:33 PM CDT for Grand Forks County, Nelson County, Walsh County, North Dakota. It was in force for 57 min. 9 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, 2:33 PM CDT (19:33 UTC)
- Expired
- Aug 13, 2007, 3:30 PM CDT
- In force
- 57 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
Counties Grand Forks County, ND, Nelson County, ND, Walsh County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 80 km from the middle of the area, began a volume at 19:33 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, 2:38 PM CDT | TORNADO 0 | 9 E Brocket, ND | A TORNADO TRACKED INTERMITTENTLY TO THE SOUTHEAST...FROM ABOUT 3 MILES NORTHWEST OF WHITMAN TO THE NELSON COUNTY LINE ABOUT 2.5 MILES NORTH NORTHWEST OF WHITMAN BY 240 PM CDT. IT CONTINUED TO THE SOUTHEAST INTO NELSON COUNTY. THE APPROXIMATELY ONE MILE TRACK I |
| Aug 13, 2:40 PM CDT | TORNADO 0 | 2 Nnw Whitman, ND | A TORNADO CONTINUED INTERMITTENTLY FROM WALSH COUNTY INTO NELSON COUNTY...AND TRACKED FOR ABOUT 5.5 MORE MILES TO ABOUT 3 MILES EAST OF WHITMAN BY 248 PM CDT. THE TORNADO BROKE DOWN SEVERAL TREES IN SHELTER BELTS AND SWIRLED CROP SWATHES IN ITS PATH. TOTAL PAT |
| Aug 13, 2:55 PM CDT | HAIL 1.75 | 8 Nne Petersburg, ND | |
| Aug 13, 2:55 PM CDT | HAIL 1.75 | 8 Nw Petersburg, ND | |
| Aug 13, 2:55 PM CDT | HAIL 2 | 8 Nne Petersburg, ND | |
| Aug 13, 3:20 PM CDT | HAIL 1 | 2 N Petersburg, ND | |
| Aug 13, 3:25 PM CDT | HAIL 1.75 | 3 Nnw Niagara, ND | |
| Aug 13, 3:31 PM CDT | HAIL 1.75 | 1 E Niagara, ND | |
| Aug 13, 3:40 PM CDT | HAIL 1 | 2 W Larimore, 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 |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 7.6 hours before the alert went out and 254 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 131933 TORFGF NDC035-063-099-132030- /O.NEW.KFGF.TO.W.0032.070813T1933Z-070813T2030Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 233 PM CDT MON AUG 13 2007 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... WESTERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA... NORTHEASTERN NELSON COUNTY IN NORTHEAST NORTH DAKOTA... SOUTHWESTERN WALSH COUNTY IN NORTHEAST NORTH DAKOTA... * UNTIL 330 PM CDT * AT 229 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES NORTHWEST OF WHITMAN...OR 31 MILES EAST OF DEVILS LAKE...MOVING TO THE SOUTHEAST AT 35 MPH. * THE TORNADO WILL BE NEAR... WHITMAN AT 240 PM CDT... DAHLEN AT 250 PM CDT... 7 MILES NORTHEAST OF PETERSBURG AT 255 PM CDT... NIAGARA AT 305 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. LAT...LON 4832 9824 4810 9832 4773 9759 4805 9741 $$ DK/BH
5 follow-up statements
000 WWUS53 KFGF 131947 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 243 PM CDT MON AUG 13 2007 NDC035-063-099-132030- /O.CON.KFGF.TO.W.0032.000000T0000Z-070813T2030Z/ GRAND FORKS ND-NELSON ND-WALSH ND- 243 PM CDT MON AUG 13 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR WESTERN GRAND FORKS...NORTHEASTERN NELSON AND SOUTHWESTERN WALSH COUNTIES... AT 242 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED OVER WHITMAN...OR 35 MILES EAST OF DEVILS LAKE...MOVING TO THE SOUTHEAST AT 30 MPH. LAW ENFORCEMENT REPORTS GOLF BALL SIZE HAIL COVERING THE GROUND 5 MILES WEST OF LANKIN. * THE TORNADO WILL BE NEAR... DAHLEN BY 250 PM CDT... PETERSBURG BY 300 PM CDT... NIAGARA BY 305 PM CDT... MCCANNA BY 310 PM CDT... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM CDT MONDAY AFTERNOON FOR EASTERN NORTH DAKOTA. LAT...LON 4831 9823 4809 9832 4773 9759 4805 9741 $$ DK/BH
000 WWUS53 KFGF 131954 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 253 PM CDT MON AUG 13 2007 NDC035-063-099-132030- /O.CON.KFGF.TO.W.0032.000000T0000Z-070813T2030Z/ GRAND FORKS ND-NELSON ND-WALSH ND- 253 PM CDT MON AUG 13 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR WESTERN GRAND FORKS...NORTHEASTERN NELSON AND SOUTH CENTRAL WALSH COUNTIES... AT 250 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED 5 MILES SOUTHEAST OF WHITMAN...OR 36 MILES SOUTHWEST OF GRAFTON...MOVING TO THE SOUTHEAST AT 35 MPH. SPOTTERS HAVE SEEN ROTATION WITH THE STORM 5 MILES NORTH OF MICHIGAN. * THE TORNADO WILL BE NEAR... PETERSBURG BY 300 PM CDT... NIAGARA BY 310 PM CDT... MCCANNA BY 315 PM CDT... LARIMORE AND 8 MILES NORTHEAST OF LOGAN CENTER BY 330 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 4833 9798 4800 9820 4769 9780 4802 9748 $$ DK/BH
000 WWUS53 KFGF 132002 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 301 PM CDT MON AUG 13 2007 NDC035-063-099-132030- /O.CON.KFGF.TO.W.0032.000000T0000Z-070813T2030Z/ GRAND FORKS ND-NELSON ND-WALSH ND- 301 PM CDT MON AUG 13 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR NORTHWESTERN GRAND FORKS...NORTHEASTERN NELSON AND EXTREME SOUTH CENTRAL WALSH COUNTIES... AT 259 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED 4 MILES NORTHWEST OF NIAGARA...OR 35 MILES SOUTHWEST OF GRAFTON...MOVING TO THE SOUTHEAST AT 35 MPH. SPOTTERS REPORTED GOLF BALL SIZE HAIL 8 MILES NORTHWEST OF PETERSBURG AND COVERING THE GROUND. * THE TORNADO WILL BE NEAR... MCCANNA BY 315 PM CDT... LARIMORE BY 325 PM CDT... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM CDT MONDAY AFTERNOON FOR EASTERN NORTH DAKOTA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING FOR NORTHWESTERN MINNESOTA. LAT...LON 4826 9784 4798 9816 4775 9772 4798 9746 $$ DK/BH
000 WWUS53 KFGF 132011 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 310 PM CDT MON AUG 13 2007 NDC099-132020- /O.CAN.KFGF.TO.W.0032.000000T0000Z-070813T2030Z/ WALSH ND- 310 PM CDT MON AUG 13 2007 ...THE TORNADO WARNING FOR WALSH COUNTY IS CANCELLED... 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 4819 9772 4799 9803 4770 9766 4775 9741 $$ NDC035-063-132030- /O.CON.KFGF.TO.W.0032.000000T0000Z-070813T2030Z/ GRAND FORKS ND-NELSON ND- 310 PM CDT MON AUG 13 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR WESTERN GRAND FORKS AND EAST CENTRAL NELSON COUNTIES... AT 307 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE TORNADO WAS LOCATED NEAR NIAGARA...OR 35 MILES SOUTHWEST OF GRAFTON...MOVING TO THE SOUTHEAST AT 35 MPH. * THE TORNADO WILL BE NEAR... MCCANNA BY 315 PM CDT... LARIMORE BY 325 PM CDT... KEMPTON AND 8 MILES NORTH OF NORTHWOOD BY 330 PM CDT... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM CDT MONDAY AFTERNOON FOR EASTERN NORTH DAKOTA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CDT MONDAY EVENING FOR NORTHWESTERN MINNESOTA. LAT...LON 4819 9772 4799 9803 4770 9766 4775 9741 $$ DK/BH
000 WWUS53 KFGF 132031 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 330 PM CDT MON AUG 13 2007 NDC035-063-132040- /O.EXP.KFGF.TO.W.0032.000000T0000Z-070813T2030Z/ GRAND FORKS ND-NELSON ND- 330 PM CDT MON AUG 13 2007 ...THE TORNADO WARNING FOR WESTERN GRAND FORKS AND EAST CENTRAL NELSON COUNTIES EXPIRED AT 330 PM CDT... DOPPLER RADAR INDICATED THE STORM WAS NO LONGER SEVERE AND SO THE WARNING WAS ALLOWED TO EXPIRE AT 330 PM CDT. A SEVERE THUNDERSTORM WARNING HAS BEEN ISSUED FOR GRAND FORKS COUNTY AND REPLACES THE EXPIRED TORNADO WARNING. 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 4819 9772 4799 9803 4770 9766 4775 9741 $$ DK/BH
The 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, 3:29 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 61 min |
| Aug 13, 3:40 PM CDT | Tornado Warning | FGF | Grand Forks, Steele, Traill | 65 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.