Alert archive / North Dakota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 48, NWS Bismarck, ND

June 1, 2018Grant County, Morton County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 1, 2018, 5:14 PM MDT for Grant County, Morton County, North Dakota. It was in force for 61 min. 1 report 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: Jun 1, 2018, 5:14 PM MDT (23:14 UTC)
Expired: Jun 1, 2018, 6:15 PM MDT
In force: 61 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Tornado: Possible
Hail: 1.5 in
Wind: 60.0 mph

Counties Grant County, ND, Morton County, ND

The radar

The Bismarck radar (KBIS), 83 km from the middle of the area, began a volume at 23:12 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
Jun 1, 5:20 PM MDT	HAIL 1	9 Sse Leith, ND	REPORT FROM FRIDAY, JUNE 1ST. MOST OF THE HAIL WAS DIME SIZE, LARGEST WAS THE SIZE OF A QUARTER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 6 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 1, 2:30 PM MDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.2 hours before the alert went out and 86 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1549 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 438 m²/s²
0-3 km storm-relative helicity: 623 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

379 
WUUS53 KBIS 012314
SVRBIS
NDC037-059-020015-
/O.NEW.KBIS.SV.W.0048.180601T2314Z-180602T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
614 PM CDT FRI JUN 1 2018

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  South central Morton County in south central North Dakota...
  Central Grant County in south central North Dakota...

* Until 715 PM CDT/615 PM MDT/.

* At 614 PM CDT/514 PM MDT/, a severe thunderstorm was located 16
  miles north of Watauga, or 22 miles southeast of Elgin, moving
  north at 30 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Carson, Flasher, Lark, Raleigh and St. Gertrude. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

A Tornado Watch remains in effect until 1100 PM CDT/1000 PM MDT/ for
south central North Dakota.

LAT...LON 4612 10168 4667 10147 4659 10093 4613 10127
      4613 10130 4611 10130 4609 10132 4609 10134
      4607 10135 4608 10139 4606 10141 4605 10146
      4606 10147 4604 10150
TIME...MOT...LOC 2314Z 199DEG 24KT 4616 10153 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...60MPH
 
$$

HEINERT

3 follow-up statements

470 
WWUS53 KBIS 012338
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
638 PM CDT FRI JUN 1 2018

NDC037-059-020015-
/O.CON.KBIS.SV.W.0048.000000T0000Z-180602T0015Z/
Morton ND-Grant ND-
638 PM CDT FRI JUN 1 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM
CDT/615 PM MDT/ FOR SOUTH CENTRAL MORTON AND EASTERN GRANT
COUNTIES...

At 638 PM CDT/538 PM MDT/, a severe thunderstorm was located 11 miles
southeast of Carson, or 22 miles east of Elgin, moving northeast at
25 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Flasher, Lark, Raleigh and St. Gertrude. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

A Tornado Watch remains in effect until 1100 PM CDT/1000 PM MDT/ for
south central North Dakota.

LAT...LON 4622 10158 4667 10147 4659 10093 4613 10127
      4613 10130 4611 10130 4609 10132 4609 10134
      4607 10135 4608 10139 4608 10143 4612 10149
TIME...MOT...LOC 2338Z 216DEG 24KT 4631 10139 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...60MPH
 
$$

HEINERT

961 
WWUS53 KBIS 012350
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
650 PM CDT FRI JUN 1 2018

NDC037-059-020015-
/O.CON.KBIS.SV.W.0048.000000T0000Z-180602T0015Z/
Morton ND-Grant ND-
650 PM CDT FRI JUN 1 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM
CDT/615 PM MDT/ FOR SOUTH CENTRAL MORTON AND EASTERN GRANT
COUNTIES...

At 650 PM CDT/550 PM MDT/, a severe thunderstorm was located 7 miles
southwest of Flasher, or 23 miles east of Elgin, moving north at 30
mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Flasher, Lark, Raleigh and St. Gertrude. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

A Tornado Watch remains in effect until 1100 PM CDT/1000 PM MDT/ for
south central North Dakota.

LAT...LON 4641 10148 4667 10147 4659 10093 4613 10127
      4619 10137 4630 10141
TIME...MOT...LOC 2350Z 199DEG 24KT 4639 10135 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...60MPH
 
$$

HEINERT

793 
WWUS53 KBIS 020011
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
711 PM CDT FRI JUN 1 2018

NDC037-059-020020-
/O.EXP.KBIS.SV.W.0048.000000T0000Z-180602T0015Z/
Morton ND-Grant ND-
711 PM CDT FRI JUN 1 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MORTON AND
EASTERN GRANT COUNTIES WILL EXPIRE AT 715 PM CDT/615 PM MDT/...
                
The storm which prompted the warning has weakened below severe 
limits. Therefore, the warning will be allowed to expire. Small hail 
and gusty winds are still possible with this storm. 

A Tornado Watch remains in effect until 1100 PM CDT/1000 PM MDT/ for
south central North Dakota.

LAT...LON 4641 10148 4667 10147 4659 10093 4613 10127
      4619 10137 4630 10141
TIME...MOT...LOC 0010Z 199DEG 24KT 4651 10129 

$$

HEINERT

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Bismarck, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 1, 12:32 PM MDT, 4 hours 42 minutes earlier.

Area forecast discussion, Jun 1, 12:32 PM MDT, 4 hours 42 minutes before

Area Forecast Discussion
National Weather Service Bismarck ND
132 PM CDT Fri Jun 1 2018

.SHORT TERM...(This evening through Saturday)
Issued at 124 PM CDT Fri Jun 1 2018

The main forecast issue in the short term period will be
thunderstorms today and this evening, then winds tonight into
Saturday.

Surface low pressure was located over far northwest SD early this
afternoon with a strong southeast flow over much of western and
central ND. Some areas are near advisory criteria for winds but
would rather not clog up the airways with wind advisory with
potential for significant severe outbreak unless we see widespread
advisory criteria winds.

We continue to destabilize over western ND this afternoon. SPC has
issued a severe thunderstorm watch for the eastern high plains
east into southwest ND and western SD. Severe convection already
continues over eastern MT and northeast WY and is expected to move
into southwest ND later this afternoon. Additionally we still
expect thunderstorm development to the east of this area, over
western and central ND around mid afternoon. Would not be
surprised with a Tornado Watch or certainly a SVR with possible
tornadoes mentioned. Very strong instability and deep layer shear
are expected to continue to develop over western and central ND
this afternoon. A limiting factor for a tornado watch would be a
limited area and time where shear and discrete cell development
will coincide before convection takes on a more QLCS like
structure. However, with such a strong wave, we do expect
convection will move through the area this afternoon and this
evening. CAMS are in good agreement in moving a single or multiple
line segments through the forecast area during this timeframe. The
12 UTC HREF again supports our strongest updrafts over the lake
Sakakawea region. Really no significant messaging changes from
the early morning forecast.

A strong westerly flow continues tonight behind the convection, and
continues through Saturday. Will probably need some wind
highlights for Saturday but will not issue anything at this time.
There could be some wrap around moisture, with scattered showers
and an isolated thunderstorm across the north Saturday.

.LONG TERM...(Saturday night through Friday)
Issued at 124 PM CDT Fri Jun 1 2018

Upper level ridging builds over the area Saturday night through
Monday. We then return to a quasi-zonal flow Monday night through
Friday with periodic chances of showers and thunderstorms.

&&

.AVIATION...(For the 18Z TAFS through 18Z Saturday afternoon)
Issued at 124 PM CDT Fri Jun 1 2018

Intense storms are expected to develop in western ND this
afternoon in the 19 to 21 UTC time frame. Those storms are
expected to move eastward ahead of a cold front and will likely
merge into a line as they reach the KMOT to KBIS areas by late
afternoon or early evening, and KJMS this evening. IFR to LIFR
conditions, large hail, damaging winds and very heavy rainfall may
accompany any severe storms this afternoon and evening.

A strong westerly flow will develop behind the convection and
continue through Saturday.

&&

.BIS WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SHORT TERM...TWH
LONG TERM...TWH
AVIATION...TWH

Hazardous weather outlook, Jun 1, 12:32 PM MDT, 4 hours 42 minutes before

Hazardous Weather Outlook
National Weather Service Bismarck ND
132 PM CDT Fri Jun 1 2018

NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-021845-
Divide-Burke-Renville-Bottineau-Rolette-Williams-Mountrail-Ward-
McHenry-Pierce-McKenzie-Dunn-Mercer-Oliver-McLean-Sheridan-Wells-
Foster-Golden Valley-Billings-Stark-Morton-Burleigh-Kidder-
Stutsman-Slope-Hettinger-Grant-Bowman-Adams-Sioux-Emmons-Logan-
La Moure-McIntosh-Dickey-
132 PM CDT Fri Jun 1 2018 /1232 PM MDT Fri Jun 1 2018/

This Hazardous Weather Outlook is for portions of north central
North Dakota, northwest North Dakota, south central North Dakota,
southeast North Dakota, and southwest North Dakota.

.DAY ONE...This Afternoon and Tonight

A significant severe weather event is expected this afternoon and
evening. Scattered severe storms will likely first develop across
western North Dakota between 2 pm and 4 pm CDT and are forecast
to merge into a solid line of storms by the time they reach
Highway 83 in the late afternoon or early evening. The line of
storms will then move eastward across the remainder of central
North Dakota and the James River valley this evening. The storms
could produce very large hail, possibly up to the size of tennis
balls, damaging wind gusts up to 70 mph, and very heavy rainfall.
A few tornadoes are also possible this afternoon, with the
greatest tornado risk in areas along and west of Highway 83.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Strong northwest winds gusting up to 45 mph are likely across
western and central North Dakota on Saturday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters will be needed this afternoon and evening. A cold
front will interact with an unstable atmosphere containing enough
wind shear for supercell thunderstorms this afternoon along and
west of Highway 83. Storms will likely merge into a squall line
that will move east across central North Dakota and the James
River valley this evening.

In the hours before

Local storm report, Jun 1, 4:42 PM MDT, 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
542 PM CDT FRI JUN 1 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0526 PM     TORNADO          1 ESE OAKDALE           47.47N 102.84W
06/01/2018                   DUNN               ND   LAW ENFORCEMENT

            BRIEF TOUCHDOWN IN A FIELD. NO DAMAGE.

&&

JPM

Local storm report, Jun 1, 4:45 PM MDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
545 PM CDT FRI JUN 1 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0452 PM     HAIL             13 S WATFORD CITY       47.61N 103.25W
06/01/2018  E1.00 INCH       MCKENZIE           ND   LAW ENFORCEMENT

            LAW ENFORCEMENT REPORTED PEA TO QUARTER
            SIZED HAIL COVERING THE GROUND AT MILE
            MARKER 127, WHICH IS 13 MILES SOUTH OF
            WATFORD CITY.

&&

Local storm report, Jun 1, 4:48 PM MDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
548 PM CDT FRI JUN 1 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0541 PM     TORNADO          8 NE OAKDALE            47.55N 102.74W
06/01/2018                   DUNN               ND   EMERGENCY MNGR

            3-5 MILES NORTH OF MILE MARKER 183 ON
            HIGHWAY 22.

&&

RK

Local storm report, Jun 1, 4:49 PM MDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
549 PM CDT FRI JUN 1 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0541 PM     HAIL             8 NE OAKDALE            47.55N 102.74W
06/01/2018  E1.50 INCH       DUNN               ND   EMERGENCY MNGR

            3-5 MILES NORTH OF MILE MARKER 183 ON
            HIGHWAY 22.

&&

RK

Local storm report, Jun 1, 4:56 PM MDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
556 PM CDT FRI JUN 1 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0553 PM     TORNADO          2 S HEBRON              46.87N 102.05W
06/01/2018                   MORTON             ND   TRAINED SPOTTER

            TORNADO STILL ON THE GROUND AT THE TIME OF
            THIS REPORT.

&&

RK

Local storm report, Jun 1, 5:13 PM MDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
613 PM CDT FRI JUN 1 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0607 PM     TORNADO          5 N HEBRON              46.97N 102.05W
06/01/2018                   MORTON             ND   LAW ENFORCEMENT

&&

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 6:00 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Hettinger	60 min
May 31, 6:42 PM MDT	Severe Thunderstorm Warning	BIS	Grant, Morton	63 min
May 31, 6:47 PM MDT	Special Weather Statement	BIS	Morton, Oliver	43 min
May 31, 7:03 PM MDT	Areal Flood Advisory	BIS	Hettinger	2 hr
May 31, 7:12 PM MDT	Special Weather Statement	BIS	Hettinger	48 min
May 31, 7:32 PM MDT	Severe Thunderstorm Warning	BIS	Grant, Hettinger	58 min
May 31, 7:48 PM MDT	Severe Thunderstorm Warning	BIS	Grant, Morton	27 min
May 31, 7:55 PM MDT	Special Weather Statement	BIS	Stark	50 min
May 31, 8:26 PM MDT	Special Weather Statement	BIS	Burleigh	49 min
May 31, 8:40 PM MDT	Special Weather Statement	BIS	Grant, Morton, Sioux	50 min
May 31, 8:58 PM MDT	Special Weather Statement	BIS	Grant	47 min
May 31, 9:23 PM MDT	Special Weather Statement	BIS	Sioux	52 min
May 31, 9:46 PM MDT	Special Weather Statement	BIS	Morton	44 min
May 31, 10:33 PM MDT	Special Weather Statement	BIS	Emmons, Sioux	42 min
May 31, 11:22 PM MDT	Special Weather Statement	BIS	Emmons	38 min
May 31, 11:59 PM MDT	Special Weather Statement	BIS	Dunn, Stark	46 min
Jun 1, 1:03 AM MDT	Special Weather Statement	BIS	Adams, Dunn, Grant, Hettinger, Mercer, Morton and 3 more	42 min
Jun 1, 1:05 AM MDT	Special Weather Statement	BIS	Emmons	40 min
Jun 1, 1:39 AM MDT	Special Weather Statement	BIS	Sheridan	51 min
Jun 1, 1:43 AM MDT	Special Weather Statement	BIS	Emmons	47 min
Jun 1, 1:46 AM MDT	Special Weather Statement	BIS	Burleigh	44 min
Jun 1, 1:57 AM MDT	Special Weather Statement	BIS	Sioux	48 min
Jun 1, 2:28 AM MDT	Special Weather Statement	BIS	Logan	47 min
Jun 1, 5:32 AM MDT	Special Weather Statement	BIS	Mercer	43 min
Jun 1, 5:56 AM MDT	Severe Thunderstorm Warning	BIS	McLean, Mercer	64 min
Jun 1, 12:29 PM MDT	Special Weather Statement	BIS	Burke	46 min
Jun 1, 1:15 PM MDT	Special Weather Statement	BIS	Dunn, Mountrail	45 min
Jun 1, 1:35 PM MDT	Special Weather Statement	BIS	Burke	25 min
Jun 1, 2:09 PM MDT	Special Weather Statement	BIS	Burke	21 min
Jun 1, 2:39 PM MDT	Areal Flood Advisory	BIS	Burke	6 hr
Jun 1, 2:52 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh, Morton, Oliver	25 min
Jun 1, 3:07 PM MDT	Severe Thunderstorm Warning	BIS	Billings, McKenzie	53 min
Jun 1, 3:30 PM MDT	Tornado Warning	BIS	McKenzie	30 min
Jun 1, 4:01 PM MDT	Severe Thunderstorm Warning	BIS	Dunn, McKenzie	59 min
Jun 1, 4:22 PM MDT	Severe Thunderstorm Warning	BIS	Grant, Morton	38 min
Jun 1, 4:25 PM MDT	Severe Thunderstorm Warning	BIS	Williams	35 min
Jun 1, 4:29 PM MDT	Severe Thunderstorm Warning	BIS	Williams	61 min
Jun 1, 4:33 PM MDT	Tornado Warning Tornado observed	BIS	Dunn, McKenzie	27 min
Jun 1, 4:48 PM MDT	Severe Thunderstorm Warning	BIS	McLean, Mercer, Oliver	57 min
Jun 1, 4:52 PM MDT	Tornado Warning	BIS	McKenzie, Mountrail	23 min
Jun 1, 4:54 PM MDT	Tornado Warning	BIS	Mercer, Morton, Oliver	36 min
Jun 1, 4:56 PM MDT	Tornado Warning	BIS	Dunn, McLean, Mountrail	34 min
Jun 1, 4:57 PM MDT	Tornado Warning	BIS	Grant, Morton	33 min
Jun 1, 5:02 PM MDT	Tornado Warning	BIS	Dunn, McLean, Mercer	28 min
Jun 1, 5:07 PM MDT	Severe Thunderstorm Warning	BIS	Grant, Morton	38 min
Jun 1, 5:14 PM MDT	Tornado Warning	BIS	McKenzie, Mountrail	31 min
Jun 1, 5:27 PM MDT	Tornado Warning	BIS	McHenry, McLean, Ward	13 min
Jun 1, 5:30 PM MDT	Severe Thunderstorm Warning	BIS	McLean, Mercer, Mountrail, Ward	60 min
Jun 1, 5:30 PM MDT	Tornado Warning Tornado observed	BIS	Mercer	30 min
Jun 1, 5:42 PM MDT	Severe Thunderstorm Warning	BIS	Burke, Mountrail, Ward	63 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2018 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.