Alert archive / Mississippi / Flash Flood Warnings in 1989

Flash Flood Warning 23, NWS Jackson, MS

July 1, 1989Washington County, Mississippi

NWS Jackson, MS issued this flash flood warning at Jul 1, 1989, 8:46 PM CDT for Washington County, Mississippi. It was in force for 119 min.

The area

The counties it named.

The facts

Issued
Jul 1, 1989, 8:46 PM CDT (01:46 UTC)
Expired
Jul 1, 1989, 10:45 PM CDT
In force
119 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Washington County, MS

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 1.8 hours before the alert went out and 195 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, Little Rock, AR at 00:00Z on 1989-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Little Rock, AR at 00:00Z on 1989-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 square meters per square second.1939Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3621 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 1, 3:20 PM CDT, 5 hours 26 minutes before
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Special weather statement, Jul 1, 4:37 PM CDT, 4 hours 9 minutes before
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Special weather statement, Jul 1, 5:36 PM CDT, 3 hours 10 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 Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 1, 8:59 PM CDTFlash Flood WarningJANSunflower2 hr
Jul 1, 10:56 PM CDTFlash Flood WarningJANWashington2 hr
Jul 2, 12:43 AM CDTFlash Flood WarningJANHumphreys2 hr
Jul 2, 4:48 PM CDTFlash Flood WarningJANAdams117 min
Jul 2, 4:48 PM CDTSevere Thunderstorm WarningJANAdams57 min
Jul 2, 4:53 PM CDTFlash Flood WarningJANAmite, Franklin87 min

Nearby

Flash Flood Warnings in Mississippi, 1989Every flash flood warning in 1989

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.