Alert archive / North Dakota / Flash Flood Watches in 2020

Flash Flood Watch 1, NWS Bismarck, ND

June 7, 2020Dickey County, LaMoure County, McIntosh County, North Dakota

NWS Bismarck, ND issued this flash flood watch at Jun 7, 2020, 5:23 PM CDT for Dickey County, LaMoure County, McIntosh County, North Dakota. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Jun 7, 2020, 5:23 PM CDT (22:23 UTC)
Expired
Jun 8, 2020, 2:41 AM CDT
In force
9 hr
Issued by
NWS Bismarck, ND
Flood severity
None

Counties Dickey County, ND, LaMoure County, ND, McIntosh County, ND

The radar

The Aberdeen radar (KABR), 91 km from the middle of the area, began a volume at 22:23 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.

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.4 hours before the alert went out and 151 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-pSkew-T log-p diagram, Aberdeen, SD at 12:00Z on 2020-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1690 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 12:00Z on 2020-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 539 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1690 J/kg
Mixed-layer CIN
-147 J/kg
Mixed-layer LCL
1215 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
539 m²/s²
0-3 km storm-relative helicity
503 m²/s²
Significant tornado parameter
1.5
Supercell composite
17.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 flash flood watch went out at Jun 7, 4:31 PM CDT, 52 minutes earlier.

Area forecast discussion, Jun 7, 4:31 PM CDT, 52 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, Jun 7, 2:43 PM CDT, 2 hours 40 minutes before
Hazardous Weather Outlook
National Weather Service Bismarck ND
243 PM CDT Sun Jun 7 2020

NDZ001-002-009-081945-
Divide-Burke-Williams-
243 PM CDT Sun Jun 7 2020

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

.DAY ONE...This Afternoon and Tonight

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

NDZ003>005-010>013-017>023-031>036-040>046-081945-
Renville-Bottineau-Rolette-Mountrail-Ward-McHenry-Pierce-McKenzie-
Dunn-Mercer-Oliver-McLean-Sheridan-Wells-Golden Valley-Billings-
Stark-Morton-Burleigh-Kidder-Slope-Hettinger-Grant-Bowman-Adams-
Sioux-Emmons-
243 PM CDT Sun Jun 7 2020 /143 PM MDT Sun Jun 7 2020/

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

.DAY ONE...This Afternoon and Tonight

Isolated to scattered severe thunderstorms are possible across
portions of west and central North Dakota late this afternoon and
evening. The main hazards will be large hail up to two inches in
diameter and damaging wind gusts up to 70 mph.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters will be needed.

NDZ025-037-047-048-050-051-081945-
Foster-Stutsman-Logan-La Moure-McIntosh-Dickey-
243 PM CDT Sun Jun 7 2020

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

.DAY ONE...This Afternoon and Tonight

Numerous severe thunderstorms are expected across the southern
James River Valley late this afternoon and evening. The main
hazards will be a few tornadoes, destructive hail up to baseball
size, and destructive wind gusts up to 80 mph. Very heavy rainfall
is also likely with the storms.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters will be needed.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 8:04 PM CDTWind AdvisoryBISBurke, Divide, McKenzie, Mountrail, Renville, Williams87 min
Jun 6, 8:40 PM CDTSevere Thunderstorm WarningBISAdams, Bowman, Hettinger, Slope65 min
Jun 6, 9:35 PM CDTSevere Thunderstorm WarningBISGrant, Sioux55 min
Jun 6, 9:47 PM CDTSevere Thunderstorm WarningBISAdams, Hettinger, Slope, Stark58 min
Jun 6, 10:24 PM CDTSevere Thunderstorm WarningBISGrant, Morton, Sioux51 min
Jun 6, 11:09 PM CDTSpecial Weather StatementBISMcLean, Mercer, Oliver51 min
Jun 6, 11:10 PM CDTSpecial Weather StatementBISMorton50 min
Jun 6, 11:42 PM CDTSpecial Weather StatementBISWard48 min
Jun 6, 11:59 PM CDTSpecial Weather StatementBISMcLean, Sheridan, Wells46 min
Jun 7, 12:11 AM CDTSevere Thunderstorm WarningBISMcHenry, Ward49 min
Jun 7, 12:39 AM CDTSevere Thunderstorm WarningBISBottineau, McHenry, Pierce, Rolette32 min
Jun 7, 6:04 PM CDTSevere Thunderstorm WarningBISMcIntosh56 min
Jun 7, 6:28 PM CDTSevere Thunderstorm WarningBISBurleigh, Kidder47 min
Jun 7, 6:44 PM CDTTornado Warning Tornado observedBISMcIntosh31 min
Jun 7, 6:48 PM CDTSevere Thunderstorm WarningBISEmmons, Kidder, Logan57 min

Nearby

Flash Flood Watches in North Dakota, 2020Every flash flood watch 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; radar from the NEXRAD Level II archive.