Alert archive / North Dakota / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 109, NWS Bismarck, ND

July 29, 2017Renville County, Ward County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 29, 2017, 4:29 PM CDT for Renville County, Ward 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: Jul 29, 2017, 4:29 PM CDT (21:29 UTC)
Expired: Jul 29, 2017, 5:30 PM CDT
In force: 61 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Renville County, ND, Ward County, ND

The radar

The Minot AFB radar (KMBX), 75 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 29, 4:36 PM CDT	TSTM WND DMG	12 N Norma, ND	12 INCH ASH TREE TRUNK SPLIT ABOUT 6 FEET UP, 70 MPH ESTIMATE.

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 7 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 nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.5 hours before the alert went out and 234 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: 118 J/kg
Mixed-layer CIN: -225 J/kg
Mixed-layer LCL: 1200 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted.

845 
WUUS53 KBIS 292129
SVRBIS
NDC075-101-292230-
/O.NEW.KBIS.SV.W.0109.170729T2129Z-170729T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
429 PM CDT SAT JUL 29 2017

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  Northwestern Ward County in north central North Dakota...
  Renville County in north central North Dakota...

* Until 530 PM CDT

* At 429 PM CDT, a severe thunderstorm was located 12 miles east of
  Bowbells, moving southeast at 25 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* This severe thunderstorm will be near,
  Greene around 510 PM CDT. 

Other locations impacted by this severe thunderstorm include Tolley,
Grano and Norma.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4878 10149 4872 10149 4872 10147 4847 10147
      4853 10195 4881 10207 4881 10202 4892 10202
      4900 10185
TIME...MOT...LOC 2129Z 329DEG 24KT 4885 10199 

HAIL...1.00IN
WIND...60MPH
 
$$

ABELING

3 follow-up statements

874 
WWUS53 KBIS 292143
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
443 PM CDT SAT JUL 29 2017

NDC075-101-292230-
/O.CON.KBIS.SV.W.0109.000000T0000Z-170729T2230Z/
Ward ND-Renville ND-
443 PM CDT SAT JUL 29 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTHWESTERN WARD AND RENVILLE COUNTIES...

At 442 PM CDT, a severe thunderstorm was located 10 miles northeast
of Kenmare, or 16 miles east of Bowbells, moving southeast at 30 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

This severe storm will be near...
  Greene around 505 PM CDT. 

Other locations impacted by this severe thunderstorm include Tolley,
Grano and Norma.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4878 10149 4872 10149 4872 10147 4847 10147
      4853 10195 4881 10207 4881 10202 4892 10202
      4900 10185
TIME...MOT...LOC 2142Z 321DEG 27KT 4877 10190 

HAIL...1.00IN
WIND...60MPH
 
$$

ABELING

788 
WWUS53 KBIS 292204
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
504 PM CDT SAT JUL 29 2017

NDC075-101-292230-
/O.CON.KBIS.SV.W.0109.000000T0000Z-170729T2230Z/
Ward ND-Renville ND-
504 PM CDT SAT JUL 29 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTHWESTERN WARD AND WESTERN RENVILLE COUNTIES...

At 503 PM CDT, a severe thunderstorm was located near Greene, or 14
miles west of Mohall, moving southeast at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

This severe storm will be near...
  Greene around 515 PM CDT. 

Other locations impacted by this severe thunderstorm include Tolley,
Grano and Norma.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4878 10153 4869 10150 4851 10150 4853 10195
      4881 10207 4881 10202 4892 10202 4892 10185
TIME...MOT...LOC 2203Z 322DEG 18KT 4869 10180 

HAIL...1.00IN
WIND...60MPH
 
$$

ABELING

850 
WWUS53 KBIS 292225
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
525 PM CDT SAT JUL 29 2017

NDC075-101-292235-
/O.EXP.KBIS.SV.W.0109.000000T0000Z-170729T2230Z/
Ward ND-Renville ND-
525 PM CDT SAT JUL 29 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WARD AND WESTERN
RENVILLE COUNTIES WILL EXPIRE AT 530 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However small hail
and gusty winds are still possible with this thunderstorm.

LAT...LON 4878 10153 4869 10150 4851 10150 4853 10195
      4881 10207 4881 10202 4892 10202 4892 10185
TIME...MOT...LOC 2225Z 329DEG 24KT 4857 10169 

$$

ABELING

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 Jul 29, 3:18 PM CDT, 1 hour 11 minutes earlier.

Area forecast discussion, Jul 29, 3:18 PM CDT, 1 hour 11 minutes before

Area Forecast Discussion
National Weather Service Bismarck ND
318 PM CDT Sat Jul 29 2017

.SHORT TERM...(This evening through Sunday)
Issued at 250 PM CDT Sat Jul 29 2017

The short term concern will be severe weather potential for this
afternoon and early evening. Early convection began in an area of
steep low level lapse rates across western North Dakota. A weak
frontal boundary extending from north central into teh west will
also be a focus for convection. However with shear weak expect
mainly short lived pulse storms through early evening.

Expect the convection to migrate into central North Dakota later
this evening.

On Sunday a building h500 ridge will cap most convection leaving
just widely scattered thunderstorms. Highs Sunday will again be
in the 80s east to lower to mid 90s west.

.LONG TERM...(Sunday night through Saturday)
Issued at 250 PM CDT Sat Jul 29 2017

For the extended period a northwest flow regime will set up
providing several opportunities for thunderstorms. The best
chances are expected to be Monday night and Wednesday through
Wednesday night. Both periods will be associated with cold fronts
and cooler temperatures. Highs Sunday and Monday will be in the
80s to middle 90s. By Tuesday cooler with highs in the 70s and 80s,
and Wednesday through Friday will see as cool as 70 north central
and 70s to lower 80s south and west. A bit warmer Saturday with
highs in the 70s to middle 80s.

&&

.AVIATION...(For the 18Z TAFS through 18Z Sunday afternoon)
Issued at 1232 PM CDT Sat Jul 29 2017

At noon CDT a nearly stationary frontal boundary across northwest
North Dakota will remain in place this afternoon then retreat
back north late tonight as warm air moves in associated with a
mid level ridge over the western CONUS. Scattered thunderstorms
will be the hazard to aviation this afternoon and tonight. VFR is
forecast for all TAF sites.

&&

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

SHORT TERM...WAA
LONG TERM...WAA
AVIATION...WAA

Hazardous weather outlook, Jul 29, 3:32 PM CDT, 57 minutes before

Hazardous Weather Outlook
National Weather Service Bismarck ND
332 PM CDT Sat Jul 29 2017

NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-302045-
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-
332 PM CDT Sat Jul 29 2017 /232 PM MDT Sat Jul 29 2017/

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

Isolated to scattered thunderstorms are possible late this
afternoon and tonight. A few storms could be severe west with
large hail and gusty winds the primary threat.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

There are daily chances for thunderstorms through Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

waa

In the hours before

Special weather statement, Jul 29, 1:28 PM CDT, 3 hours 1 minute before

Special Weather Statement
National Weather Service Bismarck ND
1228 PM MDT SAT JUL 29 2017

NDZ031-291845-
Golden Valley ND-
1228 PM MDT SAT JUL 29 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN GOLDEN VALLEY
COUNTY UNTIL 1245 PM MDT...

At 1228 PM MDT, Doppler radar was tracking a strong thunderstorm 12
miles north of Sentinel Butte, or 16 miles northeast of Beach, moving
east at 20 mph.

Half inch hail and wind gusts to 40 mph will be possible with this
storm.

This storm will remain over mainly rural areas of northeastern Golden
Valley County.

LAT...LON 4717 10392 4722 10372 4718 10367 4703 10366
      4699 10369 4699 10391
TIME...MOT...LOC 1828Z 264DEG 19KT 4710 10379

ABELING

Special weather statement, Jul 29, 2:06 PM CDT, 2 hours 23 minutes before

Special Weather Statement
National Weather Service Bismarck ND
106 PM MDT SAT JUL 29 2017

NDZ031-032-291945-
Golden Valley ND-Billings ND-
106 PM MDT SAT JUL 29 2017

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL GOLDEN VALLEY AND
SOUTHWESTERN BILLINGS COUNTIES UNTIL 145 PM MDT...

At 106 PM MDT, Doppler radar was tracking a strong thunderstorm 5
miles east of Sentinel Butte, or 13 miles east of Beach, moving east
at 15 mph.

Half inch hail and wind gusts to 50 mph will be possible with this
storm.

This strong thunderstorm will be near...
  Medora around 145 PM MDT.

LAT...LON 4683 10381 4701 10383 4708 10343 4678 10341
TIME...MOT...LOC 1906Z 265DEG 12KT 4693 10372

ABELING

Special weather statement, Jul 29, 3:08 PM CDT, 1 hour 21 minutes before

Special Weather Statement
National Weather Service Bismarck ND
208 PM MDT SAT JUL 29 2017

NDZ043-292045-
Bowman ND-
208 PM MDT SAT JUL 29 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL BOWMAN COUNTY
UNTIL 245 PM MDT...

At 208 PM MDT, Doppler radar was tracking a strong thunderstorm near
Rhame, or 10 miles west of Bowman, moving east at 10 mph.

Half inch hail and wind gusts to 50 mph will be possible with this
storm.

Locations impacted include...
Rhame and Griffin.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek shelter
inside a building or vehicle.

&&

LAT...LON 4611 10368 4620 10372 4628 10350 4628 10348
      4612 10342
TIME...MOT...LOC 2008Z 254DEG 7KT 4619 10361

AYD

Local storm report, Jul 29, 3:58 PM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
358 PM CDT SAT JUL 29 2017

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

0349 PM     TSTM WND GST     10 S WATFORD CITY       47.66N 103.32W
07/29/2017  M62 MPH          MCKENZIE           ND   MESONET

            WCYN8 RAWS MESONET SITE.

&&

AE

Special weather statement, Jul 29, 4:03 PM CDT, 26 minutes before

Special Weather Statement
National Weather Service Bismarck ND
403 PM CDT SAT JUL 29 2017

NDZ002-011-292130-
Ward ND-Burke ND-
403 PM CDT SAT JUL 29 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN WARD AND
SOUTHEASTERN BURKE COUNTIES UNTIL 430 PM CDT...

At 403 PM CDT, Doppler radar was tracking a strong thunderstorm 6
miles southwest of Bowbells, moving east at 15 mph.

Penny size hail and wind gusts to 50 mph will be possible with this
storm.

Locations impacted include...
Bowbells, Coteau and Niobe.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek shelter
inside a building or vehicle.

&&

LAT...LON 4888 10212 4869 10210 4862 10219 4862 10243
      4880 10248
TIME...MOT...LOC 2103Z 258DEG 12KT 4873 10233

AYD

Special weather statement, Jul 29, 4:06 PM CDT, 23 minutes before

Special Weather Statement
National Weather Service Bismarck ND
406 PM CDT SAT JUL 29 2017

NDZ017-292130-
McKenzie ND-
406 PM CDT SAT JUL 29 2017

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL MCKENZIE COUNTY
UNTIL 430 PM CDT...

At 406 PM CDT, Doppler radar was tracking a strong thunderstorm 6
miles southeast of Watford City, moving east at 10 mph.

Penny size hail and wind gusts to 55 mph will be possible with this
storm.

Locations impacted include...
Johnsons Corner.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4793 10291 4767 10283 4768 10310 4767 10310
      4767 10323 4780 10325
TIME...MOT...LOC 2106Z 254DEG 8KT 4777 10316

AYD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 1:20 PM CDT	Special Weather Statement	BIS	Golden Valley	25 min
Jul 29, 1:28 PM CDT	Special Weather Statement	BIS	Golden Valley	17 min
Jul 29, 2:06 PM CDT	Special Weather Statement	BIS	Golden Valley	39 min
Jul 29, 2:56 PM CDT	Severe Thunderstorm Warning	BIS	Dunn, McKenzie	64 min
Jul 29, 3:08 PM CDT	Special Weather Statement	BIS	Bowman	37 min
Jul 29, 4:03 PM CDT	Special Weather Statement	BIS	Burke	27 min
Jul 29, 4:06 PM CDT	Special Weather Statement	BIS	McKenzie	24 min
Jul 29, 4:47 PM CDT	Special Weather Statement	BIS	Mountrail	28 min
Jul 29, 5:09 PM CDT	Special Weather Statement	BIS	Williams	21 min
Jul 29, 5:32 PM CDT	Special Weather Statement	BIS	Mountrail	43 min
Jul 29, 5:54 PM CDT	Special Weather Statement	BIS	Mountrail	36 min
Jul 29, 6:07 PM CDT	Special Weather Statement	BIS	Mountrail	38 min
Jul 29, 6:37 PM CDT	Severe Thunderstorm Warning	BIS	McLean, Mountrail	68 min
Jul 29, 6:47 PM CDT	Special Weather Statement	BIS	Dunn	28 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2017 Every severe thunderstorm warning in 2017

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.