Alert archive / North Dakota / Tornado Warnings in 2011
Tornado Warning 36, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jul 16, 2011, 8:36 PM CDT for Benson County, Ramsey County, North Dakota. It was in force for 39 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
- Jul 16, 2011, 8:36 PM CDT (01:36 UTC)
- Expired
- Jul 16, 2011, 9:15 PM CDT
- In force
- 39 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
Counties Benson County, ND, Ramsey County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 116 km from the middle of the area, began a volume at 01:39 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 |
|---|---|---|---|
| Jul 16, 4:57 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 1.6 hours before the alert went out and 200 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
- 4274 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 1100 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 205 m²/s²
- Significant tornado parameter
- 2.4
- Supercell composite
- 13.9
The text
As transmitted, in the capitals the NWS used until 2016.
105 WFUS53 KFGF 170136 TORFGF NDC005-071-170215- /O.NEW.KFGF.TO.W.0036.110717T0136Z-110717T0215Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 836 PM CDT SAT JUL 16 2011 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN BENSON COUNTY IN NORTHEAST NORTH DAKOTA... SOUTH CENTRAL RAMSEY COUNTY IN NORTHEAST NORTH DAKOTA... * UNTIL 915 PM CDT * AT 834 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE STORM WAS LOCATED 2 MILES SOUTHWEST OF ST MICHAEL...OR 11 MILES SOUTH OF DEVILS LAKE...MOVING TO THE EAST AT 20 MPH. * THE TORNADIC STORM WILL BE NEAR... TOKIO AROUND 845 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 4804 9853 4785 9854 4788 9904 4807 9901 TIME...MOT...LOC 0136Z 276DEG 19KT 4796 9889 $$ DTR/JK
2 follow-up statements
347 WWUS53 KFGF 170152 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 852 PM CDT SAT JUL 16 2011 NDC005-071-170215- /O.CON.KFGF.TO.W.0036.000000T0000Z-110717T0215Z/ BENSON ND-RAMSEY ND- 852 PM CDT SAT JUL 16 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL RAMSEY AND SOUTHEASTERN BENSON COUNTIES IN NORTHEAST NORTH DAKOTA UNTIL 915 PM CDT... AT 848 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 2 MILES NORTH OF TOKIO...OR 11 MILES SOUTH OF DEVILS LAKE...MOVING TO THE EAST AT 20 MPH. THE TORNADIC STORM WILL AFFECT MAINLY RURAL AREAS OF SOUTH CENTRAL RAMSEY AND SOUTHEASTERN BENSON COUNTIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. && LAT...LON 4804 9853 4785 9854 4788 9904 4807 9901 TIME...MOT...LOC 0152Z 283DEG 19KT 4795 9880 $$ DTR/JK
347 WWUS53 KFGF 170215 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 915 PM CDT SAT JUL 16 2011 NDC005-071-170225- /O.EXP.KFGF.TO.W.0036.000000T0000Z-110717T0215Z/ BENSON ND-RAMSEY ND- 915 PM CDT SAT JUL 16 2011 ...THE TORNADO WARNING FOR SOUTH CENTRAL RAMSEY AND SOUTHEASTERN BENSON COUNTIES IN NORTHEAST NORTH DAKOTA HAS EXPIRED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. LAT...LON 4804 9853 4785 9854 4788 9904 4807 9901 TIME...MOT...LOC 0215Z 283DEG 19KT 4792 9862 $$ DTR/JK
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:10 PM CDT | Tornado Warning | FGF | Griggs | 50 min |
| Jul 16, 7:53 PM CDT | Tornado Warning | FGF | Benson, Ramsey | 52 min |
| Jul 16, 9:24 PM CDT | Tornado Warning | FGF | Benson, Nelson, Ramsey | 51 min |
| Jul 16, 10:02 PM CDT | Flash Flood Warning | FGF | Nelson, Ramsey | 10 hr |
| Jul 16, 10:41 PM CDT | Areal Flood Advisory | FGF | Pembina, Walsh | 8 hr |
| Jul 16, 11:08 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 52 min |
| Jul 17, 11:45 AM CDT | Severe Thunderstorm Warning | FGF | Benson | 60 min |
| Jul 17, 12:33 PM CDT | Tornado Warning | FGF | Eddy | 42 min |
| Jul 17, 1:11 PM CDT | Tornado Warning | FGF | Eddy | 49 min |
| Jul 17, 2:24 PM CDT | Tornado Warning | FGF | Barnes, Griggs | 36 min |
| Jul 17, 2:57 PM CDT | Tornado Warning | FGF | Barnes, Griggs | 48 min |
| Jul 17, 3:34 PM CDT | Tornado Warning | FGF | Barnes, Griggs, Steele | 41 min |
| Jul 17, 4:12 PM CDT | Tornado Warning | FGF | Barnes, Cass | 63 min |
| Jul 17, 5:13 PM CDT | Tornado Warning | FGF | Cass | 45 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.