Alert archive / North Dakota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 21, NWS Bismarck, ND

May 28, 2018Dunn County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at May 28, 2018, 5:34 PM MDT for Dunn County, North Dakota. It was in force for 41 min. 2 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: May 28, 2018, 5:34 PM MDT (23:34 UTC)
Expired: May 28, 2018, 6:15 PM MDT
In force: 41 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Dunn County, ND

The radar

The Bismarck radar (KBIS), 142 km from the middle of the area, began a volume at 23:34 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
May 28, 6:10 PM MDT	HAIL 1	6 Nne Hirschville, ND	MOSTLY NICKEL SIZED HAIL, WITH A FEW AS LARGE AS QUARTERS.
May 28, 6:24 PM MDT	HAIL 1	9 Wnw Marshall, ND	ALSO 50-60 MPH WINDS.

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

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.6 hours before the alert went out and 147 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: 20 J/kg
Mixed-layer CIN: -360 J/kg
Mixed-layer LCL: 1475 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 15 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

533 
WUUS53 KBIS 282334
SVRBIS
NDC025-290015-
/O.NEW.KBIS.SV.W.0021.180528T2334Z-180529T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
534 PM MDT MON MAY 28 2018

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  South central and southeastern Dunn County in southwestern 
  North Dakota...

* Until 615 PM MDT.

* At 533 PM MDT, a severe thunderstorm was located 12 miles north of
  Gladstone, or 14 miles northeast of Dickinson, moving north at 30
  mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Hirschville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to 
localized flooding in low lying areas. Do not drive your vehicle 
through flooded roadways.

&&

LAT...LON 4733 10268 4732 10227 4701 10246 4701 10252
      4698 10253 4698 10276
TIME...MOT...LOC 2333Z 192DEG 25KT 4704 10261 

HAIL...1.00IN
WIND...<50MPH
 
$$

HEINERT

1 follow-up statement

039 
WWUS53 KBIS 282356
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
556 PM MDT MON MAY 28 2018

NDC025-290015-
/O.CON.KBIS.SV.W.0021.000000T0000Z-180529T0015Z/
Dunn ND-
556 PM MDT MON MAY 28 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM MDT
FOR SOUTHEASTERN DUNN COUNTY...

At 554 PM MDT, a severe thunderstorm was located 10 miles west of
Marshall, or 18 miles northeast of Dickinson, moving north at 30 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Hirschville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is also occurring with this storm, and may lead 
to localized flooding in low lying areas. Do not drive your vehicle 
through flooded roadways.

&&

LAT...LON 4733 10268 4732 10227 4702 10249 4701 10252
      4701 10257 4703 10265 4716 10269
TIME...MOT...LOC 2354Z 190DEG 27KT 4710 10256 

HAIL...1.00IN
WIND...<50MPH
 
$$

HEINERT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 28, 2:59 PM MDT	Special Weather Statement	BIS	Hettinger	46 min
May 28, 3:29 PM MDT	Severe Thunderstorm Warning	BIS	Hettinger, Stark	31 min
May 28, 3:48 PM MDT	Special Weather Statement	BIS	Stark	42 min
May 28, 4:01 PM MDT	Special Weather Statement	BIS	Stark	44 min
May 28, 4:37 PM MDT	Special Weather Statement	BIS	Stark	38 min
May 28, 5:19 PM MDT	Special Weather Statement	BIS	Stark	41 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.