Alert archive / North Dakota / Tornado Warnings in 2011
Tornado Warning 88, NWS Bismarck, ND
NWS Bismarck, ND issued this tornado warning at Aug 5, 2011, 5:34 PM CDT for Morton County, North Dakota. It was in force for 26 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 5, 2011, 5:34 PM CDT (22:34 UTC)
- Expired
- Aug 5, 2011, 6:00 PM CDT
- In force
- 26 min
- Issued by
- NWS Bismarck, ND
- Area
- Storm-based polygon
County Morton County, ND
The radar
The Bismarck radar (KBIS), 90 km from the middle of the area, began a volume at 22:36 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 5, 5:45 PM CDT | TSTM WND DMG | Glen Ullin, ND | 6 TO 8 INCH DIAMETER TREES SNAPPED. ESTIMATED 70 MILE PER HOUR WINDS. STRONG WINDS LASTED 10 TO 15 MINUTES. 1.80 INCH PRECIPITATION. |
| Aug 5, 5:50 PM CDT | TSTM WND DMG | Nne Hebron, ND | 2 TO 3 INCH DIAMETER TREES BLOWN OVER. WINDS ESTIMATED 65-70 MPH. |
| Aug 5, 5:53 PM CDT | TSTM WND GST 60 | Glen Ullin, ND | ESTIMATED WIND GUSTS OF AT LEAST 60 MPH. ZERO VISIBILITY. WINDS ONGOING. REPORT RELAYED BY WARNING POINT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 5, 1:48 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 10.6 hours before the alert went out and 95 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
- 825 J/kg
- Mixed-layer CIN
- -179 J/kg
- Mixed-layer LCL
- 1272 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
360
WFUS53 KBIS 052234
TORBIS
NDC059-052300-
/O.NEW.KBIS.TO.W.0088.110805T2234Z-110805T2300Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
534 PM CDT FRI AUG 5 2011
THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN MORTON COUNTY IN SOUTH CENTRAL NORTH DAKOTA...
* UNTIL 600 PM CDT
* AT 531 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 HEBRON...OR 36 MILES EAST OF
DICKINSON...AND MOVING NORTHEAST AT 15 MPH.
* LOCATIONS IMPACTED INCLUDE...
HEBRON AND GLEN ULLIN.
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.
MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT...EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND LIE DOWN IN A LOW LYING AREA.
&&
LAT...LON 4680 10210 4688 10210 4693 10201 4698 10188
4698 10186 4695 10171 4684 10163 4676 10201
TIME...MOT...LOC 2234Z 233DEG 14KT 4681 10203
$$
HEINERT2 follow-up statements
258
WWUS53 KBIS 052244
SVSBIS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
544 PM CDT FRI AUG 5 2011
NDC059-052300-
/O.CON.KBIS.TO.W.0088.000000T0000Z-110805T2300Z/
MORTON ND-
544 PM CDT FRI AUG 5 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN MORTON COUNTY
UNTIL 600 PM CDT...
AT 540 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR HEBRON...OR 36 MILES EAST OF DICKINSON...
MOVING EAST AT 20 MPH.
LOCATIONS IMPACTED INCLUDE...
GLEN ULLIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT... EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND LIE DOWN IN A LOW LYING AREA.
&&
LAT...LON 4678 10192 4681 10205 4687 10208 4693 10201
4698 10188 4698 10186 4695 10171 4684 10163
TIME...MOT...LOC 2244Z 248DEG 16KT 4684 10200
$$
HEINERT641
WWUS53 KBIS 052257
SVSBIS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
557 PM CDT FRI AUG 5 2011
NDC059-052307-
/O.EXP.KBIS.TO.W.0088.000000T0000Z-110805T2300Z/
MORTON ND-
557 PM CDT FRI AUG 5 2011
...THE TORNADO WARNING FOR NORTHWESTERN MORTON COUNTY WILL EXPIRE AT
600 PM CDT/500 PM MDT/...
THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
EXPIRED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT
FOR THE AREA.
LAT...LON 4678 10192 4681 10205 4687 10208 4693 10201
4698 10188 4698 10186 4695 10171 4684 10163
TIME...MOT...LOC 2257Z 248DEG 16KT 4686 10192
$$
HEINERT/SCHECKThe office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 7:47 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley, Slope, Stark | 58 min |
| Aug 4, 11:59 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Ward | 61 min |
| Aug 5, 1:00 AM CDT | Severe Thunderstorm Warning | BIS | McLean, Sheridan | 37 min |
| Aug 5, 2:59 AM CDT | Areal Flood Advisory | BIS | Sheridan, Wells | 6 hr |
| Aug 5, 12:18 PM CDT | Areal Flood Advisory | BIS | Billings, Dunn, Golden Valley, McKenzie | 6 hr |
| Aug 5, 2:19 PM CDT | Severe Thunderstorm Warning | BIS | Bowman, Slope | 56 min |
| Aug 5, 2:26 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley | 29 min |
| Aug 5, 3:18 PM CDT | Flash Flood Warning | BIS | Billings, Dunn, Stark | 6 hr |
| Aug 5, 3:44 PM CDT | Flash Flood Warning | BIS | Billings, Golden Valley, Slope | 2 hr |
| Aug 5, 3:51 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, Stark | 54 min |
| Aug 5, 4:13 PM CDT | Severe Thunderstorm Warning | BIS | Bowman | 47 min |
| Aug 5, 4:45 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, Stark | 60 min |
| Aug 5, 4:59 PM CDT | Flash Flood Warning | BIS | Stark | 6 hr |
| Aug 5, 5:23 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Hettinger, Mercer, Morton, Oliver, Stark | 67 min |
| Aug 5, 5:42 PM CDT | Areal Flood Advisory | BIS | Grant, Mercer, Morton, Oliver | 93 min |
| Aug 5, 6:04 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton, Oliver | 41 min |
| Aug 5, 6:19 PM CDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 39 min |
| Aug 5, 6:43 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Emmons, Morton, Oliver | 62 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.