Alert archive / Nebraska / Flash Flood Warnings in 1993

Flash Flood Warning 39, NWS Omaha, NE

July 22, 1993Nemaha County, Otoe County, Nebraska

NWS Omaha, NE issued this flash flood warning at Jul 22, 1993, 8:45 PM CDT for Nemaha County, Otoe County, Nebraska. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jul 22, 1993, 8:45 PM CDT (01:45 UTC)
Expired
Jul 23, 1993, 12:45 AM CDT
In force
4 hr
Issued by
NWS Omaha, NE
Area
Whole counties

Counties Nemaha County, NE, Otoe County, NE

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.8 hours before the alert went out and 95 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, Omaha, NE at 00:00Z on 1993-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2002 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, Omaha, NE at 00:00Z on 1993-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 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
2002 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
664 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
160 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.5

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

Local storm report, Jul 22, 8:21 PM CDT, 24 minutes before
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Local storm report, Jul 22, 8:22 PM CDT, 23 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.
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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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The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 22, 7:02 PM CDTFlash Flood WarningOAXOtoe4 hr
Jul 22, 7:12 PM CDTFlash Flood WarningOAXCass4 hr
Jul 22, 7:19 PM CDTSevere Thunderstorm WarningOAXOtoe56 min
Jul 22, 7:26 PM CDTTornado WarningOAXOtoe64 min
Jul 22, 8:32 PM CDTSevere Thunderstorm WarningOAXOtoe58 min
Jul 22, 8:54 PM CDTSevere Thunderstorm WarningOAXNemaha66 min
Jul 22, 10:37 PM CDTSevere Thunderstorm WarningOAXOtoe38 min
Jul 22, 11:15 PM CDTFlash Flood WarningOAXCass, Otoe4 hr
Jul 23, 2:55 AM CDTFlash Flood WarningOAXLancaster6 hr
Jul 23, 3:00 AM CDTFlash Flood WarningOAXCass, Sarpy, Saunders4 hr
Jul 23, 6:56 AM CDTFlash Flood WarningOAXCass, Saunders2 hr
Jul 23, 8:51 AM CDTFlash Flood WarningOAXCass2 hr
Jul 23, 10:00 AM CDTFlash Flood WarningOAXOtoe2 hr
Jul 22, 8:18 PM CDTFlash Flood WarningOAXFremont57 min
Jul 22, 8:18 PM CDTSevere Thunderstorm WarningOAXFremont57 min
Jul 22, 9:27 PM CDTFlash Flood WarningOAXFremont2 hr
Jul 23, 3:00 AM CDTFlash Flood WarningOAXFremont, Mills, Montgomery, Page4 hr

Nearby

Flash Flood Warnings in Nebraska, 1993Every flash flood warning in 1993

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.