Alert archive / North Dakota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 189, NWS Bismarck, ND

July 13, 20205 counties in North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 13, 2020, 1:40 AM CDT for 5 counties in North Dakota. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 13, 2020, 1:40 AM CDT (06:40 UTC)
Expired: Jul 13, 2020, 2:21 AM CDT
In force: 41 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

Counties McHenry County, ND, McLean County, ND, Mercer County, ND, Sheridan County, ND, Ward County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 6.7 hours before the alert went out and 118 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: 4 J/kg
Mixed-layer CIN: -408 J/kg
Mixed-layer LCL: 2215 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 210 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 13, 12:00 AM CDT, 1 hour 40 minutes earlier.

Area forecast discussion, Jul 13, 12:00 AM CDT, 1 hour 40 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Jul 12, 1:00 PM CDT, 12 hours 40 minutes before

Hazardous Weather Outlook
National Weather Service Bismarck ND
100 PM CDT Sun Jul 12 2020

NDZ001>003-009>011-131800-
Divide-Burke-Renville-Williams-Mountrail-Ward-
100 PM CDT Sun Jul 12 2020

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

.DAY ONE...This Afternoon and Tonight

There is a chance of severe thunderstorms this evening, with hail
up to golf ball size, damaging winds up to 60 mph, and a tornado
or two possible.

Chances for thunderstorms will continue overnight. Severe weather
is not expected after 10 PM CDT.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Isolated to scattered thunderstorms are possible Monday afternoon.
Severe weather is not expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this evening.

NDZ004-005-012-013-017>023-025-031>037-040>047-131800-
Bottineau-Rolette-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-
100 PM CDT Sun Jul 12 2020 /1200 PM MDT Sun Jul 12 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...This Afternoon and Tonight

There is a chance of thunderstorms tonight. A few storms may be
strong to severe, with large hail up to quarter size.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Strong thunderstorms are possible from central into eastern North
Dakota Monday morning and afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

NDZ048-050-051-131800-
La Moure-McIntosh-Dickey-
100 PM CDT Sun Jul 12 2020

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

.DAY ONE...This Afternoon and Tonight

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Strong thunderstorms are possible from central into eastern North
Dakota Monday morning and afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

Hollan

In the hours before

Local storm report, Jul 12, 9:01 PM CDT, 4 hours 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
901 PM CDT SUN JUL 12 2020

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

0838 PM     HAIL             6 SSW MCGREGOR          48.52N 103.00W
07/12/2020  E1.00 INCH       WILLIAMS           ND   PUBLIC

&&

AE

Special weather statement, Jul 12, 9:51 PM CDT, 3 hours 49 minutes before

Special Weather Statement
National Weather Service Bismarck ND
Issued by National Weather Service Aberdeen SD
951 PM CDT Sun Jul 12 2020

NDZ003-010-011-130315-
Mountrail ND-Ward ND-Renville ND-
951 PM CDT Sun Jul 12 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WARD...SOUTHERN
RENVILLE AND NORTHEASTERN MOUNTRAIL COUNTIES UNTIL 1015 PM CDT...

At 950 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles west of Donnybrook, or 17 miles northeast of Stanley, moving
east at 20 mph.

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

Locations impacted include...
Donnybrook and Coulee.

LAT...LON 4841 10219 4850 10222 4858 10217 4865 10191
      4844 10176
TIME...MOT...LOC 0250Z 249DEG 17KT 4848 10210

Connelly

Local storm report, Jul 12, 10:55 PM CDT, 2 hours 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
1055 PM CDT SUN JUL 12 2020

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

1040 PM     HAIL             14 NNW AMIDON           46.65N 103.47W
07/12/2020  M0.88 INCH       BILLINGS           ND   TRAINED SPOTTER

&&

AE

Special weather statement, Jul 12, 11:24 PM CDT, 2 hours 16 minutes before

Special Weather Statement
National Weather Service Bismarck ND
Issued by National Weather Service Aberdeen SD
1124 PM CDT Sun Jul 12 2020

NDZ018>020-033-034-130515-
Oliver ND-Stark ND-Mercer ND-Morton ND-Dunn ND-
1124 PM CDT Sun Jul 12 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN DUNN...NORTHWESTERN
MORTON...NORTHERN STARK...SOUTHWESTERN OLIVER AND SOUTHWESTERN MERCER
COUNTIES UNTIL 1215 AM CDT/1115 PM MDT/...

At 1124 PM CDT/1024 PM MDT/, Doppler radar was tracking strong
thunderstorms along a line extending from near Dickinson to near
Gladstone to near Richardton. Movement was northeast at 30 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Dickinson, Hebron, Center, Richardton, South Heart, Gladstone,
Taylor, Marshall, Hirschville and Dickinson Regional Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms 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 4719 10230 4706 10187 4712 10129 4677 10228
      4673 10272 4686 10315
TIME...MOT...LOC 0424Z 241DEG 28KT 4693 10283 4687 10261 4690 10222

Dorn

Local storm report, Jul 13, 12:21 AM CDT, 1 hour 19 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 8:36 PM CDT	Severe Thunderstorm Warning	BIS	Burke, Mountrail, Williams	25 min
Jul 12, 9:09 PM CDT	Severe Thunderstorm Warning	BIS	Burke, Mountrail, Ward	51 min
Jul 12, 9:12 PM CDT	Severe Thunderstorm Warning	BIS	Mountrail	48 min
Jul 12, 9:51 PM CDT	Special Weather Statement	BIS	Renville	24 min
Jul 12, 10:34 PM CDT	Severe Thunderstorm Warning	BIS	Billings, Slope, Stark	34 min
Jul 12, 10:55 PM CDT	Severe Thunderstorm Warning	BIS	McHenry, Renville, Ward	20 min
Jul 12, 11:24 PM CDT	Special Weather Statement	BIS	Stark	51 min
Jul 12, 11:28 PM CDT	Severe Thunderstorm Warning	BIS	Billings, Golden Valley	62 min
Jul 12, 11:30 PM CDT	Severe Thunderstorm Warning	BIS	Dunn, Morton, Stark	60 min
Jul 12, 11:32 PM CDT	Severe Thunderstorm Warning	BIS	Billings, Golden Valley	43 min
Jul 12, 11:59 PM CDT	Severe Thunderstorm Warning	BIS	Dunn, McLean, Mercer, Morton, Oliver, Stark	61 min
Jul 13, 12:05 AM CDT	Severe Thunderstorm Warning	BIS	Billings, Dunn, Golden Valley, McKenzie, Stark	55 min
Jul 13, 12:24 AM CDT	Severe Thunderstorm Warning	BIS	Billings, Dunn, Stark	66 min
Jul 13, 12:53 AM CDT	Severe Thunderstorm Warning	BIS	Billings, Golden Valley, Stark	38 min
Jul 13, 1:03 AM CDT	Severe Thunderstorm Warning	BIS	Dunn, McLean, Mercer, Mountrail	42 min
Jul 13, 2:45 AM CDT	Severe Thunderstorm Warning	BIS	Dunn, Mercer	45 min
Jul 13, 3:29 AM CDT	Severe Thunderstorm Warning	BIS	Dunn, Mercer, Stark	46 min
Jul 13, 3:50 AM CDT	Severe Thunderstorm Warning	BIS	Dunn, Mercer, Morton, Oliver	40 min
Jul 13, 4:13 AM CDT	Severe Thunderstorm Warning	BIS	Dunn, McLean, Mercer, Oliver	23 min
Jul 13, 8:54 AM CDT	Special Weather Statement	BIS	McLean	51 min
Jul 13, 10:57 AM CDT	Special Weather Statement	BIS	Pierce	48 min
Jul 13, 11:23 AM CDT	Severe Thunderstorm Warning	BIS	Pierce, Rolette	24 min
Jul 13, 11:43 AM CDT	Special Weather Statement	BIS	Pierce	32 min
Jul 13, 11:48 AM CDT	Severe Thunderstorm Warning	BIS	Pierce, Rolette	57 min
Jul 13, 12:42 PM CDT	Special Weather Statement	BIS	Pierce	48 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; the sounding from the Mesonet's radiosonde archive.