Alert archive / North Dakota / Tornado Warnings in 2011
Tornado Warning 18, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jun 17, 2011, 5:55 PM CDT for Ransom County, Sargent County, North Dakota. It was in force for 50 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
- Jun 17, 2011, 5:55 PM CDT (22:55 UTC)
- Expired
- Jun 17, 2011, 6:45 PM CDT
- In force
- 50 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
Counties Ransom County, ND, Sargent County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 123 km from the middle of the area, began a volume at 22:55 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 17, 5:34 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 10.9 hours before the alert went out and 182 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
- 35 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 665 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
718 WFUS53 KFGF 172255 TORFGF NDC073-081-172345- /O.NEW.KFGF.TO.W.0018.110617T2255Z-110617T2345Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 555 PM CDT FRI JUN 17 2011 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... EASTERN RANSOM COUNTY IN SOUTHEAST NORTH DAKOTA... NORTH CENTRAL SARGENT COUNTY IN SOUTHEAST NORTH DAKOTA... * UNTIL 645 PM CDT * AT 551 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE STORM WAS LOCATED 5 MILES NORTHEAST OF STIRUM...OR 47 MILES SOUTH OF VALLEY CITY...MOVING TO THE NORTHEAST AT 20 MPH. * THE TORNADIC STORM WILL BE NEAR... LISBON AROUND 630 PM CDT. VENLO AND ANSELM AROUND 645 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. && LAT...LON 4662 9760 4647 9731 4621 9764 4626 9788 TIME...MOT...LOC 2254Z 215DEG 17KT 4627 9773 $$ SPEICHER
2 follow-up statements
739 WWUS53 KFGF 172332 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 632 PM CDT FRI JUN 17 2011 NDC081-172341- /O.CAN.KFGF.TO.W.0018.000000T0000Z-110617T2345Z/ SARGENT ND- 632 PM CDT FRI JUN 17 2011 ...THE TORNADO WARNING FOR NORTH CENTRAL SARGENT COUNTY IN SOUTHEAST NORTH DAKOTA IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 4630 9757 4636 9780 4662 9760 4647 9731 TIME...MOT...LOC 2331Z 215DEG 17KT 4642 9763 $$ NDC073-172345- /O.CON.KFGF.TO.W.0018.000000T0000Z-110617T2345Z/ RANSOM ND- 632 PM CDT FRI JUN 17 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR EASTERN RANSOM COUNTY IN SOUTHEAST NORTH DAKOTA UNTIL 645 PM CDT... AT 628 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 3 MILES SOUTHEAST OF LISBON...OR 40 MILES SOUTHEAST OF VALLEY CITY...MOVING TO THE NORTHEAST AT 20 MPH. THE TORNADIC STORM WILL BE NEAR... VENLO AND ANSELM AROUND 645 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW. && LAT...LON 4630 9757 4636 9780 4662 9760 4647 9731 TIME...MOT...LOC 2331Z 215DEG 17KT 4642 9763 $$ SPEICHER
262 WWUS53 KFGF 172339 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 639 PM CDT FRI JUN 17 2011 NDC073-172348- /O.EXP.KFGF.TO.W.0018.000000T0000Z-110617T2345Z/ RANSOM ND- 639 PM CDT FRI JUN 17 2011 ...THE TORNADO WARNING FOR CENTRAL RANSOM COUNTY IN SOUTHEAST NORTH DAKOTA WILL EXPIRE AT 645 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. REMEMBER...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN RANSOM AND SOUTHEAST BARNES COUNTIES UNTIL 7 PM CDT. LAT...LON 4630 9757 4636 9780 4662 9760 4647 9731 TIME...MOT...LOC 2338Z 219DEG 23KT 4652 9753 $$ SPEICHER
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 5:49 PM CDT | Tornado Warning | FGF | Sargent | 41 min |
| Jun 17, 6:14 PM CDT | Tornado Warning | FGF | Barnes, Ransom | 34 min |
| Jun 17, 6:27 PM CDT | Tornado Warning | FGF | Sargent | 33 min |
Nearby
Tornado Warnings in North Dakota, 2011Every tornado warning in 2011Tornadoes in 2011
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.