Alert archive / North Dakota / Tornado Warnings in 2011
Tornado Warning 46, NWS Bismarck, ND
NWS Bismarck, ND issued this tornado warning at Jul 16, 2011, 6:29 PM CDT for Sheridan County, Wells County, North Dakota. It was in force for 31 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, 6:29 PM CDT (23:29 UTC)
- Expired
- Jul 16, 2011, 7:00 PM CDT
- In force
- 31 min
- Issued by
- NWS Bismarck, ND
- Area
- Storm-based polygon
Counties Sheridan County, ND, Wells County, ND
The radar
The Bismarck radar (KBIS), 104 km from the middle of the area, began a volume at 23:32 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 12:00Z, 11.5 hours before the alert went out and 101 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
- 894 J/kg
- Mixed-layer CIN
- -182 J/kg
- Mixed-layer LCL
- 764 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 171 m²/s²
- 0-3 km storm-relative helicity
- 261 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 13.2
The text
As transmitted, in the capitals the NWS used until 2016.
893 WFUS53 KBIS 162329 TORBIS NDC083-103-170000- /O.NEW.KBIS.TO.W.0046.110716T2329Z-110717T0000Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE BISMARCK ND 629 PM CDT SAT JUL 16 2011 THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN SHERIDAN COUNTY IN SOUTH CENTRAL NORTH DAKOTA... WESTERN WELLS COUNTY IN SOUTH CENTRAL NORTH DAKOTA... * UNTIL 700 PM CDT * AT 627 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 6 MILES SOUTH OF GOODRICH...OR 52 MILES NORTHEAST OF BISMARCK...AND MOVING EAST AT 25 MPH. * LOCATIONS IMPACTED INCLUDE... HURDSFIELD...CHASELEY AND BOWDON. THIS STORM HAS A HISTORY OF PRODUCING TORNADOES. IF YOU ARE IN THE WARNING AREA GET TO A BASEMENT AND STAY THERE UNTIL THE STORM HAS PASSED. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. THIS IS A SUPERCELL THUNDERSTORM. IN ADDITION TO TORNADOES... SUPERCELLS ARE CAPABLE OF PRODUCING EXTREMELY LARGE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. ACT QUICKLY AND MOVE TO SAFETY INSIDE A STURDY SHELTER...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM ON THE LOWEST FLOOR. && LAT...LON 4776 9985 4734 9964 4733 10024 4751 10032 TIME...MOT...LOC 2328Z 250DEG 21KT 4739 10009 $$ AYD
2 follow-up statements
564 WWUS53 KBIS 162340 SVSBIS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 640 PM CDT SAT JUL 16 2011 NDC083-103-170000- /O.CON.KBIS.TO.W.0046.000000T0000Z-110717T0000Z/ SHERIDAN ND-WELLS ND- 640 PM CDT SAT JUL 16 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN WELLS AND SOUTHEASTERN SHERIDAN COUNTIES UNTIL 700 PM CDT... AT 637 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 7 MILES SOUTHWEST OF HURDSFIELD...OR 53 MILES NORTHEAST OF BISMARCK...MOVING EAST AT 20 MPH. LOCATIONS IMPACTED INCLUDE... HURDSFIELD...CHASELEY AND BOWDON. HAIL IS ALSO POSSIBLE WITH THIS STORM...AS LARGE AS PING PONG BALL SIZE. THIS STORM HAS A HISTORY OF PRODUCING TORNADOES. IF YOU ARE IN THE WARNED AREA GET TO A BASEMENT AND STAY THERE UNTIL THE STORM HAS PASSED. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4733 10013 4754 10016 4773 9983 4734 9964 TIME...MOT...LOC 2339Z 255DEG 19KT 4739 10002 $$ AYD
111 WWUS53 KBIS 170001 SVSBIS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 701 PM CDT SAT JUL 16 2011 NDC083-103-170011- /O.EXP.KBIS.TO.W.0046.000000T0000Z-110717T0000Z/ SHERIDAN ND-WELLS ND- 701 PM CDT SAT JUL 16 2011 ...THE TORNADO WARNING FOR WESTERN WELLS AND SOUTHEASTERN SHERIDAN COUNTIES HAS EXPIRED... A SEVERE THUNDERSTORM WARNING HAS BEEN ISSUED FOR SOUTHERN WELLS COUNTY UNTIL 800 PM CDT. HAIL UP TO QUARTER SIZE AND WINDS TO 60 MPH ARE EXPECTED. LAT...LON 4733 10013 4754 10016 4773 9983 4734 9964 TIME...MOT...LOC 2340Z 255DEG 19KT 4731 9998 $$ AYD
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 11:32 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley, McKenzie | 58 min |
| Jul 16, 1:21 AM CDT | Severe Thunderstorm Warning | BIS | Dunn, McLean, Mountrail, Ward | 54 min |
| Jul 16, 1:34 AM CDT | Areal Flood Advisory | BIS | Burke, Mountrail, Williams | 6 hr |
| Jul 16, 4:34 AM CDT | Areal Flood Advisory | BIS | McKenzie | 3 hr |
| Jul 16, 5:03 AM CDT | Severe Thunderstorm Warning | BIS | Dunn, McKenzie | 57 min |
| Jul 16, 5:32 AM CDT | Areal Flood Advisory | BIS | Dunn, McKenzie | 3 hr |
| Jul 16, 5:58 AM CDT | Severe Thunderstorm Warning | BIS | Dunn, McLean, Mercer, Mountrail | 62 min |
| Jul 16, 6:43 AM CDT | Severe Thunderstorm Warning | BIS | Mercer | 33 min |
| Jul 16, 7:14 AM CDT | Severe Thunderstorm Warning | BIS | McLean, Mercer, Oliver | 61 min |
| Jul 16, 8:10 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, McLean, Oliver, Sheridan | 50 min |
| Jul 16, 8:54 AM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Kidder, Sheridan, Wells | 51 min |
| Jul 16, 9:02 AM CDT | Severe Thunderstorm Warning | BIS | McLean, Sheridan | 43 min |
| Jul 16, 9:28 AM CDT | Severe Thunderstorm Warning | BIS | Foster, Wells | 62 min |
| Jul 16, 9:36 AM CDT | Severe Thunderstorm Warning | BIS | Sheridan, Wells | 39 min |
| Jul 16, 5:31 PM CDT | Tornado Warning | BIS | Burleigh, Sheridan | 29 min |
| Jul 16, 5:57 PM CDT | Tornado Warning | BIS | Sheridan, Wells | 33 min |
| Jul 16, 6:52 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton, Sioux | 53 min |
| Jul 16, 6:59 PM CDT | Severe Thunderstorm Warning | BIS | Wells | 61 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.