Alert archive / North Dakota / Tornado Warnings in 2011
Tornado Warning 40, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jul 17, 2011, 1:11 PM CDT for Eddy County, North Dakota. It was in force for 49 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 17, 2011, 1:11 PM CDT (18:11 UTC)
- Expired
- Jul 17, 2011, 2:00 PM CDT
- In force
- 49 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
County Eddy County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 114 km from the middle of the area, began a volume at 18:13 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 17, 9:58 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 6.2 hours before the alert went out and 174 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
- 4227 J/kg
- Mixed-layer CIN
- -184 J/kg
- Mixed-layer LCL
- 1037 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 156 m²/s²
- 0-3 km storm-relative helicity
- 276 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 37.4
The text
As transmitted, in the capitals the NWS used until 2016.
744
WFUS53 KFGF 171811
TORFGF
NDC027-171900-
/O.NEW.KFGF.TO.W.0040.110717T1811Z-110717T1900Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
111 PM CDT SUN JUL 17 2011
THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A
* TORNADO WARNING FOR...
EDDY COUNTY IN NORTHEAST NORTH DAKOTA...
* UNTIL 200 PM CDT
* AT 108 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE STORM WAS
LOCATED 3 MILES SOUTHEAST OF NEW ROCKFORD...OR 33 MILES SOUTH OF
DEVILS LAKE...MOVING TO THE SOUTHEAST AT 30 MPH.
IN ADDITION...AT 105 PM GOLF BALL SIZED HAIL WAS REPORTED IN NEW
ROCKFORD WITH THIS STORM.
* THE TORNADIC STORM WILL BE NEAR...
BRANTFORD AROUND 125 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 4781 9914 4778 9853 4767 9852 4767 9851
4758 9850 4758 9904 4759 9924
TIME...MOT...LOC 1810Z 287DEG 27KT 4765 9906
$$
JK3 follow-up statements
597
WWUS53 KFGF 171822
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
122 PM CDT SUN JUL 17 2011
NDC027-171900-
/O.CON.KFGF.TO.W.0040.000000T0000Z-110717T1900Z/
EDDY ND-
122 PM CDT SUN JUL 17 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR EDDY COUNTY IN NORTHEAST
NORTH DAKOTA UNTIL 200 PM CDT...
AT 118 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 2 MILES WEST OF
BRANTFORD...OR 35 MILES SOUTH OF DEVILS LAKE...MOVING TO THE EAST AT
30 MPH.
IN ADDITION...AT 110 PM GOLF BALL SIZED HAIL AND TREES BLOWN DOWN
WERE REPORTED IN NEW ROCKFORD WITH THIS STORM.
THE TORNADIC STORM WILL AFFECT MAINLY RURAL AREAS OF EDDY COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.
&&
LAT...LON 4781 9914 4778 9853 4767 9852 4767 9851
4758 9850 4758 9904 4759 9924
TIME...MOT...LOC 1821Z 287DEG 27KT 4760 9894
$$
JK405
WWUS53 KFGF 171839
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
139 PM CDT SUN JUL 17 2011
NDC027-171900-
/O.CON.KFGF.TO.W.0040.000000T0000Z-110717T1900Z/
EDDY ND-
139 PM CDT SUN JUL 17 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN EDDY COUNTY
IN NORTHEAST NORTH DAKOTA UNTIL 200 PM CDT...
AT 137 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR GRACE CITY...
OR 38 MILES SOUTH OF DEVILS LAKE...MOVING TO THE SOUTHEAST AT 30 MPH.
LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF EASTERN EDDY...EXTREME SOUTHEASTERN EDDY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.
&&
LAT...LON 4758 9850 4758 9904 4777 9895 4776 9853
4767 9852 4767 9851
TIME...MOT...LOC 1838Z 287DEG 27KT 4756 9876
$$
JK245
WWUS53 KFGF 171854
SVSFGF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
154 PM CDT SUN JUL 17 2011
NDC027-171903-
/O.EXP.KFGF.TO.W.0040.000000T0000Z-110717T1900Z/
EDDY ND-
154 PM CDT SUN JUL 17 2011
...THE TORNADO WARNING FOR SOUTHEASTERN EDDY COUNTY IN NORTHEAST
NORTH DAKOTA WILL EXPIRE AT 200 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN GRAND FORKS.
REMEMBER...A TORNADO WARNING REMAINS IN EFFECT FOR FOSTER COUNTY
UNTIL 215 PM.
LAT...LON 4758 9850 4758 9904 4777 9895 4776 9853
4767 9852 4767 9851
TIME...MOT...LOC 1853Z 287DEG 27KT 4753 9860
$$
JKThe 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, 8:36 PM CDT | Tornado Warning | FGF | Benson, Ramsey | 39 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, 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.