Alert archive / North Dakota / Tornado Warnings in 2018

Tornado Warning 4, NWS Bismarck, ND

May 31, 2018Morton County, Stark County, North Dakota

NWS Bismarck, ND issued this tornado warning at May 31, 2018, 5:23 PM CDT for Morton County, Stark County, North Dakota. It was in force for 22 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
May 31, 2018, 5:23 PM CDT (22:23 UTC)
Expired
May 31, 2018, 5:45 PM CDT
In force
22 min
Issued by
NWS Bismarck, ND
Area
Storm-based polygon
Tornado
Observed
Hail
1.0 in

Counties Morton County, ND, Stark County, ND

The radar

The Bismarck radar (KBIS), 109 km from the middle of the area, began a volume at 22:23 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.

IssuedProductOfficeLasted
May 31, 3:17 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 10.4 hours before the alert went out and 114 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.

Skew-T log-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 2018-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2018-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1005 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

802 
WFUS53 KBIS 312223
TORBIS
NDC059-089-312245-
/O.NEW.KBIS.TO.W.0004.180531T2223Z-180531T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Bismarck ND
523 PM CDT THU MAY 31 2018

The National Weather Service in Bismarck has issued a

* Tornado Warning for...
  Western Morton County in south central North Dakota...
  East central Stark County in southwestern North Dakota...

* Until 545 PM CDT/445 PM MDT/.

* At 522 PM CDT/422 PM MDT/, a confirmed tornado was located near
  Richardton, or 21 miles west of Glen Ullin, moving east at 30 mph.

  HAZARD...Damaging tornado and quarter size hail.

  SOURCE...Weather spotters confirmed tornado.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* The tornado will be near...
  Hebron around 545 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4679 10239 4691 10239 4691 10196 4672 10204
      4672 10209 4669 10210
TIME...MOT...LOC 2222Z 275DEG 25KT 4682 10228 

TORNADO...OBSERVED
HAIL...1.00IN

$$

VINING

The office that day

Everything else NWS Bismarck, ND issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 30, 9:27 PM CDTSpecial Weather StatementBISDivide48 min
May 30, 10:02 PM CDTSevere Thunderstorm WarningBISDivide, Williams58 min
May 30, 10:48 PM CDTSpecial Weather StatementBISBurke27 min
May 30, 11:07 PM CDTSpecial Weather StatementBISWilliams38 min
May 30, 11:28 PM CDTSpecial Weather StatementBISRenville32 min
May 31, 12:26 AM CDTSpecial Weather StatementBISMcKenzie49 min
May 31, 1:58 AM CDTSpecial Weather StatementBISMcKenzie47 min
May 31, 2:34 AM CDTDense Fog AdvisoryBISBurleigh, Emmons, Foster, Kidder, Logan, McHenry and 8 more8 hr
May 31, 2:47 AM CDTSpecial Weather StatementBISMcKenzie43 min
May 31, 3:00 AM CDTSevere Thunderstorm WarningBISMcKenzie41 min
May 31, 2:08 PM CDTSpecial Weather StatementBISDunn37 min
May 31, 2:41 PM CDTSevere Thunderstorm WarningBISDunn, Stark64 min
May 31, 2:45 PM CDTTornado Warning Tornado observedBISDunn30 min
May 31, 3:13 PM CDTTornado WarningBISDunn, Mercer32 min
May 31, 3:28 PM CDTSevere Thunderstorm WarningBISBillings, Dunn, Stark47 min
May 31, 3:47 PM CDTTornado WarningBISMercer, Oliver28 min
May 31, 4:12 PM CDTSevere Thunderstorm WarningBISDunn, Stark48 min
May 31, 4:13 PM CDTSpecial Weather StatementBISMcKenzie47 min
May 31, 4:17 PM CDTSevere Thunderstorm WarningBISMercer, Oliver58 min
May 31, 4:40 PM CDTSevere Thunderstorm WarningBISHettinger, Slope, Stark65 min
May 31, 5:29 PM CDTSevere Thunderstorm WarningBISDunn, Mercer, Morton, Stark46 min
May 31, 5:41 PM CDTSevere Thunderstorm WarningBISHettinger, Slope, Stark64 min
May 31, 5:41 PM CDTTornado WarningBISDunn, Mercer, Stark34 min
May 31, 6:19 PM CDTSpecial Weather StatementBISOliver41 min
May 31, 6:28 PM CDTSevere Thunderstorm WarningBISMorton, Oliver62 min
May 31, 6:43 PM CDTSevere Thunderstorm WarningBISGrant, Hettinger, Morton, Stark62 min

Nearby

Tornado Warnings in North Dakota, 2018Every tornado warning in 2018Tornadoes in 2018

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.