Alert archive / North Dakota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 211, NWS Bismarck, ND

July 17, 2020Stutsman County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 17, 2020, 7:22 PM CDT for Stutsman County, North Dakota. It was in force for 53 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 17, 2020, 7:22 PM CDT (00:22 UTC)
Expired: Jul 17, 2020, 8:15 PM CDT
In force: 53 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Stutsman County, ND

The radar

The Bismarck radar (KBIS), 125 km from the middle of the area, began a volume at 00:25 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 17, 7:42 PM CDT	HAIL 1	10 Nnw Woodworth, ND

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 20 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
Jul 17, 5:39 PM CDT	Severe Thunderstorm Watch PDS	SPC	8 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.4 hours before the alert went out and 120 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: 862 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1807 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 58 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

679 
WUUS53 KBIS 180022
SVRBIS
NDC093-180115-
/O.NEW.KBIS.SV.W.0211.200718T0022Z-200718T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
722 PM CDT Fri Jul 17 2020

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  Northern Stutsman County in southeastern North Dakota...

* Until 815 PM CDT.

* At 722 PM CDT, severe thunderstorms were located along a line
  extending from Kensal to 8 miles northwest of Pingree to 4 miles
  northeast of Pettibone, moving southeast at 15 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.

* Severe thunderstorms will be near...
  Kensal around 725 PM CDT.
  Courtenay around 745 PM CDT.
  Pingree around 750 PM CDT.
  Wimbledon around 810 PM CDT.
  Buchanan and Spiritwood Lake around 815 PM CDT.

Other locations impacted by these severe thunderstorms include Chase
Lake and Edmunds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4692 9945 4698 9945 4698 9948 4733 9948
      4733 9847 4700 9846
TIME...MOT...LOC 0022Z 318DEG 15KT 4728 9870 4723 9907 4717 9948 

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

EDWARDS

3 follow-up statements

461 
WWUS53 KBIS 180057
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
757 PM CDT Fri Jul 17 2020

NDC093-180115-
/O.CON.KBIS.SV.W.0211.000000T0000Z-200718T0115Z/
Stutsman ND-
757 PM CDT Fri Jul 17 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR NORTHERN STUTSMAN COUNTY...

At 757 PM CDT, severe thunderstorms were located along a line
extending from 4 miles southwest of Kensal to 6 miles east of
Woodworth to 5 miles south of Pettibone, moving south at 15 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Buchanan and Spiritwood Lake around 845 PM CDT.

Other locations impacted by these severe thunderstorms include Chase
Lake and Edmunds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4692 9945 4698 9945 4698 9948 4733 9948
      4733 9847 4700 9846
TIME...MOT...LOC 0057Z 350DEG 11KT 4724 9878 4713 9917 4705 9949 

HAIL...1.25IN
WIND...60MPH
 
$$

EDWARDS

757 
WWUS53 KBIS 180102
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
802 PM CDT Fri Jul 17 2020

NDC093-180115-
/O.CON.KBIS.SV.W.0211.000000T0000Z-200718T0115Z/
Stutsman ND-
802 PM CDT Fri Jul 17 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR NORTHERN STUTSMAN COUNTY...

At 802 PM CDT, severe thunderstorms were located along a line
extending from 6 miles south of Kensal to 7 miles southeast of
Woodworth to 7 miles south of Pettibone, moving southeast at 20 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Pingree around 810 PM CDT.
  Buchanan around 820 PM CDT.
  Spiritwood Lake around 840 PM CDT.

Other locations impacted by these severe thunderstorms include Chase
Lake and Edmunds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4692 9945 4698 9945 4698 9948 4733 9948
      4733 9847 4700 9846
TIME...MOT...LOC 0102Z 324DEG 16KT 4721 9877 4710 9916 4702 9948 

HAIL...1.25IN
WIND...60MPH
 
$$

EDWARDS

214 
WWUS53 KBIS 180116
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
816 PM CDT Fri Jul 17 2020

NDC093-180125-
/O.EXP.KBIS.SV.W.0211.000000T0000Z-200718T0115Z/
Stutsman ND-
816 PM CDT Fri Jul 17 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN STUTSMAN COUNTY HAS
EXPIRED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been allowed to expire.  However gusty
winds and heavy rain are still possible with these thunderstorms.

A Severe Thunderstorm Watch also remains in effect until 100 AM CDT 
for southeastern North Dakota.

LAT...LON 4692 9945 4698 9945 4698 9948 4733 9948
      4733 9847 4700 9846
TIME...MOT...LOC 0115Z 318DEG 15KT 4717 9872 4706 9911 4698 9943 

$$

EDWARDS

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 17, 7:14 PM CDT, 8 minutes earlier.

Area forecast discussion, Jul 17, 7:14 PM CDT, 8 minutes before

Area Forecast Discussion
National Weather Service Bismarck ND
714 PM CDT Fri Jul 17 2020

.UPDATE...
Issued at 711 PM CDT Fri Jul 17 2020

Updated to expire the heat advisory.

Updated clouds and pops through 12Z (7 AM CDT) Saturday morning.

Note that NWS BIS will be in touch with NWS SPC to collaborate the
removal of some western counties from WW379 and possibly extend
the WW past 01Z (8 PM CDT) on its eastern edge as WW 379 is set to
expire in 45 minutes.

UPDATE Issued at 610 PM CDT Fri Jul 17 2020

Update just to mention once all products and services are updated
we will begin the job of evaluating if counties can be removed
from the western edge of the watch number 379, behind the line of
convection that continues to develop along the frontal boundary.

UPDATE Issued at 527 PM CDT Fri Jul 17 2020

Update to notify that a new watch will be issued very soon to
include the rest of southeast ND until 1 AM CDT. I'll get it out
ASAP.

jp

UPDATE Issued at 500 PM CDT Fri Jul 17 2020

As of this writing hi resolution satellite imagery was starting
to show convective cloud development on a line from the storms
just southeast of Minot to the southwest, to near Hettinger and
into northwest South Dakota. Based on atmospheric profile and
severe weather parameters we expect to see explosive storms
development along that line over the next hour or so. Right along
that line of developing cumulus / towering cumulus and to the
east is the severe thunderstorm watch area.That line also starting
to show up on area radars as a fine line.

&&

.SHORT TERM...(This evening through Saturday)
Issued at 217 PM CDT Fri Jul 17 2020

Radar signatures starting to show bowing segments this afternoon
across the north central. Cam models favor developing storms
to the southwest along a wind shift/moisture line across west
central North Dakota, and moving the whole line eastward into the
evening hours.

Out ahead and southeast of this line, strong southerly winds from
Jamestown north will feed moist low level air into the
thunderstorms.

We believe the stronger storms will have up to 75 to 80 mph gusts
and 2 inch hail along this line through early evening.

Then later tonight, as the thunderstorms exit the region, a
secondary shortwave trough will bring another chance for
thunderstorms to western North Dakota late tonight through the
afternoon hours Saturday. These could be marginally severe as
well.

.LONG TERM...(Saturday night through Friday)
Issued at 217 PM CDT Fri Jul 17 2020

The extended forecast will begin with broad cyclonic flow aloft
as an upper low over Hudson Bay, Canada migrates northeast,
leaving weak height rises over the northern US plains. While not
particularly favorable for severe weather with height rises aloft,
there should be a chance for thunderstorms Monday into Tuesday.

Otherwise after a midweek h500 ride axis moves east on Wednesday,
there should be another round of thunderstorms Thursday into
Friday as an h500 trough over the northwest us will send shortwave
energy into the region.

&&

.AVIATION...(For the 00Z TAFS through 00Z Saturday evening)
Issued at 610 PM CDT Fri Jul 17 2020

Severe thunderstorm high threat continues from just east of KMOT
through KHEI and all points east of there through 01Z. After 01Z
the threat will be from the Rugby area through KBIS and east
until about 06Z. Another mid level wave will come in behind this
convection with storms moving out of Montana and into western
North Dakota after 06Z. Those storms, after 06Z, are not expected
to be severe, but thunderstorms nonetheless.

&&

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

UPDATE...JPM
SHORT TERM...WAA
LONG TERM...WAA
AVIATION...JPM

Hazardous weather outlook, Jul 17, 7:08 PM CDT, 14 minutes before

Hazardous Weather Outlook
National Weather Service Bismarck ND
708 PM CDT Fri Jul 17 2020

NDZ037-047-048-050-051-190015-
Stutsman-Logan-La Moure-McIntosh-Dickey-
708 PM CDT Fri Jul 17 2020

This Hazardous Weather Outlook is for portions of southeast North
Dakota.

.DAY ONE...Tonight

Numerous severe thunderstorms are expected across the area and a
severe thunderstorm watch is in effect until 1 AM CDT Saturday
morning. The main hazards will be large hail up to golf ball size
and damaging wind gusts up to 75 mph. Isolated tornadoes are also
possible. Heavy rain will occur with the storms and minor
flooding of low lying areas is possible.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Thunderstorms are forecast for Saturday and some could be
severe.

.SPOTTER INFORMATION STATEMENT...

Call weather reports in to the NWS in Bismarck at 701-223-4582 or
post them to our social media pages.

NDZ003>005-010>013-018>023-025-033>036-041-042-044>046-190015-
Renville-Bottineau-Rolette-Mountrail-Ward-McHenry-Pierce-Dunn-
Mercer-Oliver-McLean-Sheridan-Wells-Foster-Stark-Morton-Burleigh-
Kidder-Hettinger-Grant-Adams-Sioux-Emmons-
708 PM CDT Fri Jul 17 2020 /608 PM MDT Fri Jul 17 2020/

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...Tonight

Scattered severe thunderstorms are possible across the area and a
severe thunderstorm watch is in effect until 8 PM CDT. The main
hazards will be large hail up to ping pong ball size and damaging
wind gusts up to 75 mph. An isolated tornado is also possible.
Heavy rain is also forecast with the storms and may lead to minor
flooding of low lying areas.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Thunderstorms are forecast for Saturday and some could be severe.

.SPOTTER INFORMATION STATEMENT...

Call weather reports in to the NWS in Bismarck at 701-223-4582 or
post them to our social media pages.

NDZ001-002-009-017-031-032-040-043-190015-
Divide-Burke-Williams-McKenzie-Golden Valley-Billings-Slope-
Bowman-
708 PM CDT Fri Jul 17 2020 /608 PM MDT Fri Jul 17 2020/

This Hazardous Weather Outlook is for portions of northwest North
Dakota and southwest North Dakota.

.DAY ONE...Tonight

Isolated strong thunderstorms are possible across the area after
midnight tonight. The main hazards will be small hail and gusty
winds.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Thunderstorms are forecast for Saturday and some could be severe.

.SPOTTER INFORMATION STATEMENT...

Call weather reports in to the NWS in Bismarck at 701-223-4582 or
post them to our social media pages.

JP Martin

In the hours before

Local storm report, Jul 17, 5:45 PM CDT, 1 hour 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
545 PM CDT FRI JUL 17 2020

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

0500 PM     HAIL             SIMCOE                  48.16N 100.87W
07/17/2020  M1.75 INCH       MCHENRY            ND   BROADCAST MEDIA

&&

Special weather statement, Jul 17, 6:24 PM CDT, 58 minutes before

Special Weather Statement
National Weather Service Bismarck ND
624 PM CDT Fri Jul 17 2020

NDZ035-172345-
Burleigh ND-
624 PM CDT Fri Jul 17 2020

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL BURLEIGH COUNTY
UNTIL 645 PM CDT...

At 624 PM CDT, a strong thunderstorm was located 5 miles east of Lake
Harmon, or 9 miles north of Mandan, moving east at 20 mph.

Nickel size hail and wind gusts to 40 mph will be possible with this
storm.

Locations impacted include...
Baldwin and Double Ditch Indian Village.

A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
south central North Dakota.

LAT...LON 4690 10091 4695 10091 4697 10094 4698 10094
      4701 10088 4704 10088 4706 10090 4715 10068
      4689 10055 4686 10087
TIME...MOT...LOC 2324Z 250DEG 19KT 4697 10086

ABELING

Local storm report, Jul 17, 6:26 PM CDT, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
626 PM CDT FRI JUL 17 2020

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

0548 PM     HAIL             ANAMOOSE                47.88N 100.24W
07/17/2020  E1.50 INCH       MCHENRY            ND   PUBLIC

            RELAYED THROUGH BROADCAST MEDIA. TIME
            ESTIMATED FROM RADAR.

&&

MJ

Local storm report, Jul 17, 6:50 PM CDT, 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
650 PM CDT FRI JUL 17 2020

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

0635 PM     TSTM WND GST     1 W CARRINGTON          47.45N 99.15W
07/17/2020  M55 MPH          FOSTER             ND   AWOS

            AWOS STATION K46D CARRINGTON ND AWOS.

&&

MJ

Local storm report, Jul 17, 6:58 PM CDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
658 PM CDT FRI JUL 17 2020

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

0648 PM     HAIL             3 N BISMARCK            46.84N 100.79W
07/17/2020  E0.88 INCH       BURLEIGH           ND   PUBLIC

&&

Local storm report, Jul 17, 7:02 PM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
702 PM CDT FRI JUL 17 2020

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

0642 PM     NON-TSTM WND GST CARRINGTON              47.45N 99.13W
07/17/2020  E60 MPH          FOSTER             ND   TRAINED SPOTTER

&&

RK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 7:43 PM CDT	Severe Thunderstorm Warning	BIS	Burleigh, Kidder	62 min
Jul 17, 8:19 PM CDT	Special Weather Statement	BIS	Sioux	11 min
Jul 17, 8:38 PM CDT	Severe Thunderstorm Warning	BIS	Kidder, LaMoure, Logan, Stutsman	67 min
Jul 17, 8:45 PM CDT	Severe Thunderstorm Warning	BIS	Emmons, Sioux	60 min
Jul 17, 9:22 PM CDT	Severe Thunderstorm Warning	BIS	Logan	53 min
Jul 17, 10:09 PM CDT	Special Weather Statement	BIS	McIntosh	51 min
Jul 17, 10:35 PM CDT	Special Weather Statement	BIS	Dickey, McIntosh	40 min
Jul 18, 4:19 PM CDT	Special Weather Statement	BIS	Oliver	41 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2020 Every severe thunderstorm warning in 2020

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.