Alert archive / North Dakota / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 28, NWS Grand Forks, ND

June 4, 1999Grand Forks County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 4, 1999, 5:14 AM CDT for Grand Forks County, North Dakota. It was in force for 31 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
Jun 4, 1999, 5:14 AM CDT (10:14 UTC)
Expired
Jun 4, 1999, 5:45 AM CDT
In force
31 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Grand Forks County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 45 km from the middle of the area, began a volume at 10:15 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 10.2 hours before the alert went out and 276 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, Bismarck Municip, ND at 00:00Z on 1999-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 59 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, Bismarck Municip, ND at 00:00Z on 1999-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 270 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
59 J/kg
Mixed-layer CIN
-109 J/kg
Mixed-layer LCL
1938 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
270 m²/s²
0-3 km storm-relative helicity
297 m²/s²
Significant tornado parameter
0.0
Supercell composite
9.0

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 Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 4, 3:30 AM CDT, 1 hour 44 minutes earlier.

Area forecast discussion, Jun 4, 3:30 AM CDT, 1 hour 44 minutes before
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In the hours before

Local storm report, Jun 3, 11:15 PM CDT, 5 hours 59 minutes before
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Local storm report, Jun 3, 11:15 PM CDT, 5 hours 59 minutes before
<!doctype html>
<html lang="en">
<head>
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  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
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</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.
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      <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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Local storm report, Jun 4, 3:00 AM CDT, 2 hours 14 minutes before
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  <title>Service Notice</title>
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</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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Special weather statement, Jun 4, 3:10 AM CDT, 2 hours 4 minutes before
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</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>
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</body>
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 3, 7:25 PM CDTSevere Thunderstorm WarningFGFBarnes, Cass35 min
Jun 3, 8:23 PM CDTSevere Thunderstorm WarningFGFEddy32 min
Jun 3, 8:46 PM CDTSevere Thunderstorm WarningFGFGriggs34 min
Jun 3, 8:54 PM CDTSevere Thunderstorm WarningFGFEddy, Nelson36 min
Jun 3, 9:20 PM CDTSevere Thunderstorm WarningFGFGriggs35 min
Jun 3, 9:27 PM CDTSevere Thunderstorm WarningFGFNelson33 min
Jun 3, 9:53 PM CDTSevere Thunderstorm WarningFGFGrand Forks32 min
Jun 4, 1:11 AM CDTSevere Thunderstorm WarningFGFCass, Steele, Traill29 min
Jun 4, 4:04 AM CDTSevere Thunderstorm WarningFGFNelson, Walsh31 min
Jun 4, 4:04 AM CDTSevere Thunderstorm WarningFGFPembina31 min
Jun 4, 4:43 AM CDTSevere Thunderstorm WarningFGFWalsh32 min
Jun 4, 6:16 AM CDTSevere Thunderstorm WarningFGFMarshall34 min
Jun 4, 4:38 PM CDTSevere Thunderstorm WarningFGFPennington32 min
Jun 4, 5:04 PM CDTSevere Thunderstorm WarningFGFBeltrami, Clearwater36 min
Jun 4, 5:21 PM CDTSevere Thunderstorm WarningFGFPolk34 min
Jun 4, 5:37 PM CDTSevere Thunderstorm WarningFGFBeltrami33 min
Jun 4, 5:55 PM CDTSevere Thunderstorm WarningFGFNorman, Polk35 min
Jun 4, 6:30 PM CDTSevere Thunderstorm WarningFGFClearwater, Polk35 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 1999Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.