Alert archive / North Dakota / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 64, NWS Bismarck, ND

June 25, 1999Bowman County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 25, 1999, 6:00 PM MDT for Bowman County, North Dakota. It was in force for 60 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 25, 1999, 6:00 PM MDT (00:00 UTC)
Expired: Jun 25, 1999, 7:00 PM MDT
In force: 60 min
Issued by: NWS Bismarck, ND
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Bowman County, ND

What was reported inside it

Time	Report	Where	Remark
Jun 25, 6:25 PM MDT	Hail 1	Bowman, ND
Jun 25, 6:30 PM MDT	Hail 0.75	Scranton, ND

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.0 hours before the alert went out and 228 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: 4959 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1683 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 210 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 25.7

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Jun 25, 2:25 PM MDT, 3 hours 35 minutes earlier.

Area forecast discussion, Jun 25, 2:25 PM MDT, 3 hours 35 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
325 PM CDT FRI JUN 25 1999

CENTRAL NORTH DAKOTA HAS BEEN CAPPED THIS AFTERNOON BUT THE CAP
SHOULD DISSIPATE THIS EVENING.  CAPE IS RUNNING HIGH AND SOME SEVERE
THUNDERSTORMS ARE LIKELY.  THUNDERSTORMS HAVE BEEN DEVELOPING ACROSS
NORTH CENTRAL NORTH DAKOTA WHERE THE CAP IS WEAK...NORTH OF A WARM
FRONT FROM BISMARCK TO GRAND FORKS.  THE STORMS HAVE MOVED RAPIDLY
NORTHEAST.  A SURFACE LOW IN SOUTHWEST NORTH DAKOTA WILL MOVE
EASTWARD SO THAT BY SATURDAY MORNING...WEST AND CENTRAL ND SHOULD
SEE DRIER CONDITIONS AS THE SURFACE FLOW TURNS TO THE WEST. ANY
STRONG ACTIVITY SHOULD BE IN THE EAST PART OF THE STATE.  THE
REMAINDER OF THE WEEKEND WILL BE COOLER WITH WESTERLY SURFACE FLOW
AND STRONG SUBSIDENCE DEVELOPING AT MID LEVELS.

.BIS...NONE.
TSW

In the hours before

Special weather statement, Jun 25, 2:10 PM MDT, 3 hours 50 minutes before

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Special weather statement, Jun 25, 2:10 PM MDT, 3 hours 50 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.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 6:25 PM MDT	Severe Thunderstorm Warning	BIS	Dunn	50 min
Jun 25, 6:30 PM MDT	Severe Thunderstorm Warning	BIS	Adams	60 min
Jun 25, 6:53 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh, Kidder	67 min
Jun 25, 7:24 PM MDT	Severe Thunderstorm Warning	BIS	Grant, Sioux	66 min
Jun 25, 8:03 PM MDT	Severe Thunderstorm Warning	BIS	Morton	42 min
Jun 25, 8:20 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh, Morton	55 min
Jun 25, 8:47 PM MDT	Severe Thunderstorm Warning	BIS	Emmons	58 min
Jun 25, 9:00 PM MDT	Severe Thunderstorm Warning	BIS	Kidder	60 min
Jun 25, 9:13 PM MDT	Severe Thunderstorm Warning	BIS	Logan	62 min
Jun 25, 9:15 PM MDT	Tornado Warning	BIS	Sheridan, Wells	45 min
Jun 25, 9:15 PM MDT	Tornado Warning	BIS	Burleigh	45 min
Jun 25, 9:26 PM MDT	Tornado Warning	BIS	Kidder	34 min
Jun 25, 9:37 PM MDT	Severe Thunderstorm Warning	BIS	Foster, Stutsman	53 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 1999 Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.