Alert archive / North Dakota / Tornado Warnings in 2005
Tornado Warning 7, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at May 20, 2005, 4:39 PM CDT for Grand Forks County, North Dakota. It was in force for 36 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
- May 20, 2005, 4:39 PM CDT (21:39 UTC)
- Expired
- May 20, 2005, 5:15 PM CDT
- In force
- 36 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
County Grand Forks County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 31 km from the middle of the area, began a volume at 21:41 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.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 9.7 hours before the alert went out and 286 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
- 184 J/kg
- Mixed-layer CIN
- -180 J/kg
- Mixed-layer LCL
- 1509 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KFGF 202139 TORFGF NDC035-202215- /O.NEW.KFGF.TO.W.0007.050520T2139Z-050520T2215Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 439 PM CDT FRI MAY 20 2005 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA * UNTIL 515 PM CDT * AT 436 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION 2 MILES SOUTH OF HOLMES...OR 19 MILES SOUTHWEST OF GRAND FORKS...MOVING TO THE EAST AT 30 MPH. * THE TORNADO IS EXPECTED TO BE NEAR... THOMPSON AT 450 PM IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. LAT...LON 4786 9737 4769 9736 4769 9693 4786 9704 $$ GV
2 follow-up statements
000 WWUS53 KFGF 202157 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 457 PM CDT FRI MAY 20 2005 NDC035-202215- /O.CON.KFGF.TO.W.0007.000000T0000Z-050520T2215Z/ GRAND FORKS ND- 457 PM CDT FRI MAY 20 2005 ...A TORNADO WARNING CONTINUES UNTIL 515 PM CDT FOR SOUTHEASTERN GRAND FORKS COUNTY... AT 453 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION. THE TORNADO WAS LOCATED NEAR REYNOLDS...OR 15 MILES SOUTH OF GRAND FORKS...MOVING TO THE EAST AT 30 MPH. THE TORNADO WILL BE NEAR... RURAL SOUTHEASTERN GRAND FORKS COUNTY AT 510 PM CDT IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. LAT...LON 4786 9737 4769 9736 4769 9693 4786 9704 $$ GV
000 WWUS53 KFGF 202215 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 515 PM CDT FRI MAY 20 2005 NDC035-202225- /O.EXP.KFGF.TO.W.0007.000000T0000Z-050520T2215Z/ GRAND FORKS ND- 515 PM CDT FRI MAY 20 2005 ...THE TORNADO WARNING FOR SOUTHEASTERN GRAND FORKS COUNTY EXPIRED AT 515 PM CDT... DOPPLER RADAR INDICATED THE STORM WAS MOVING INTO POLK COUNTY AND THE WARNING WAS ALLOWED TO EXPIRE AT 515 PM CDT. LAT...LON 4786 9737 4769 9736 4769 9693 4786 9704 $$ GV
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 4:09 PM CDT | Tornado Warning | FGF | Steele | 37 min |
| May 20, 4:24 PM CDT | Tornado Warning | FGF | Traill | 51 min |
| May 20, 4:35 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 40 min |
| May 20, 4:56 PM CDT | Tornado Warning | FGF | Cass | 64 min |
| May 20, 5:46 PM CDT | Tornado Warning | FGF | Richland | 44 min |
| May 20, 5:55 PM CDT | Tornado Warning | FGF | Cass | 33 min |
| May 20, 6:25 PM CDT | Tornado Warning | FGF | Barnes | 50 min |
| May 20, 6:30 PM CDT | Tornado Warning | FGF | Richland | 60 min |
Nearby
Tornado Warnings in North Dakota, 2005Every tornado warning in 2005Tornadoes in 2005
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.