Alert archive / North Dakota / Tornado Warnings in 2018

Tornado Warning 23, NWS Bismarck, ND

July 14, 2018Mercer County, North Dakota

NWS Bismarck, ND issued this tornado warning at Jul 14, 2018, 4:29 PM CDT for Mercer County, North Dakota. It was in force for 31 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: Jul 14, 2018, 4:29 PM CDT (21:29 UTC)
Expired: Jul 14, 2018, 5:00 PM CDT
In force: 31 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Tornado: Observed
Hail: 1.0 in

County Mercer County, ND

The radar

The Bismarck radar (KBIS), 110 km from the middle of the area, began a volume at 21:31 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
Jul 14, 4:39 PM CDT	FUNNEL CLOUD	10 S Golden Valley, ND	THE DURATION OF THE FUNNEL CLOUD EVENT WAS 2 MINUTES.
Jul 14, 4:39 PM CDT	FUNNEL CLOUD	10 S Golden Valley, ND

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
Jul 14, 4:14 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.5 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-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: 1882 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

639 
WFUS53 KBIS 142129
TORBIS
NDC057-142200-
/O.NEW.KBIS.TO.W.0023.180714T2129Z-180714T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Bismarck ND
429 PM CDT SAT JUL 14 2018

The National Weather Service in Bismarck has issued a

* Tornado Warning for...
  West central Mercer County in south central North Dakota...

* Until 500 PM CDT.

* At 429 PM CDT, a confirmed tornado was located near Golden Valley,
  or 16 miles west of Beulah, moving southeast at 15 mph.

  HAZARD...Damaging tornado and quarter size hail.

  SOURCE...Public 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...
  Golden Valley around 435 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 4709 10202 4717 10215 4729 10214 4731 10213
      4725 10190
TIME...MOT...LOC 2129Z 310DEG 13KT 4726 10214 

TORNADO...OBSERVED
HAIL...1.00IN

$$

ABELING

2 follow-up statements

734 
WWUS53 KBIS 142136
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
436 PM CDT SAT JUL 14 2018

NDC057-142200-
/O.CON.KBIS.TO.W.0023.000000T0000Z-180714T2200Z/
Mercer ND-
436 PM CDT SAT JUL 14 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR WEST
CENTRAL MERCER COUNTY...
    
At 436 PM CDT, a confirmed tornado was located 5 miles southwest of
Golden Valley, or 15 miles west of Beulah, moving southeast at 15
mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Public 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.

This tornadic thunderstorm will remain over mainly rural areas of
west central Mercer County.

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 4709 10202 4717 10215 4729 10214 4731 10213
      4723 10192
TIME...MOT...LOC 2136Z 314DEG 14KT 4722 10211 

TORNADO...OBSERVED
HAIL...1.00IN

$$

ABELING

387 
WWUS53 KBIS 142148
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
448 PM CDT SAT JUL 14 2018

NDC057-142200-
/O.CON.KBIS.TO.W.0023.000000T0000Z-180714T2200Z/
Mercer ND-
448 PM CDT SAT JUL 14 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR WEST
CENTRAL MERCER COUNTY...
    
At 448 PM CDT, a severe thunderstorm capable of producing a tornado
was located 6 miles south of Golden Valley, or 14 miles west of
Beulah, moving southeast at 15 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

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.

This tornadic thunderstorm will remain over mainly rural areas of
west central Mercer County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4709 10202 4717 10215 4724 10214 4727 10204
      4723 10192
TIME...MOT...LOC 2148Z 311DEG 12KT 4719 10208 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

ABELING

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 3:34 PM CDT	Special Weather Statement	BIS	Mercer	26 min
Jul 14, 3:51 PM CDT	Severe Thunderstorm Warning	BIS	Dunn, Mercer	54 min
Jul 14, 4:09 PM CDT	Tornado Warning Tornado observed	BIS	Dunn, Mercer	36 min
Jul 14, 4:43 PM CDT	Severe Thunderstorm Warning	BIS	McLean, Mercer	18 min
Jul 14, 4:59 PM CDT	Severe Thunderstorm Warning	BIS	Mercer	50 min
Jul 14, 5:08 PM CDT	Severe Thunderstorm Warning	BIS	Morton, Stark	37 min
Jul 14, 5:47 PM CDT	Severe Thunderstorm Warning	BIS	Pierce	43 min
Jul 14, 6:22 PM CDT	Severe Thunderstorm Warning	BIS	McHenry, Pierce, Sheridan, Wells	53 min
Jul 14, 6:28 PM CDT	Severe Thunderstorm Warning	BIS	Adams, Grant, Hettinger	62 min

Nearby

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