Alert archive / Ohio / Flash Flood Warnings in 1992

Flash Flood Warning 30, NWS Wilmington, OH

July 30, 1992Butler County, Ohio

NWS Wilmington, OH issued this flash flood warning at Jul 30, 1992, 8:46 PM EDT for Butler County, Ohio. It was in force for 74 min.

The area

The counties it named.

The facts

Issued: Jul 30, 1992, 8:46 PM EDT (00:46 UTC)
Expired: Jul 30, 1992, 10:00 PM EDT
In force: 74 min
Issued by: NWS Wilmington, OH
Area: Whole counties

County Butler County, OH

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 00:00Z, 0.8 hours before the alert went out and 61 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: 823 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 566 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 264 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 2.9

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 30, 6:37 PM EDT, 2 hours 9 minutes before

OHZ006-007-009-011-310045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBUS OH
636 PM EDT THU JUL 30 1992

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF CENTRAL OHIO
THROUGH 10 PM EDT.

A FLOOD WATCH IS ALSO IN EFFECT FOR ALL OF CENTRAL OHIO FOR TONIGHT
AND FRIDAY.

AT 635 PM NATIONAL WEATHER SERVICE RADAR INDICATED A LARGE AREA OF
SHOWERS AND THUNDERSTORMS COVERING MOST OF NORTHERN AND WESTERN OHIO.
ALL THE PRECIPITATION WAS MOVING NORTHEAST AT 30 MILES AN HOUR AND
WILL MOVE INTO CENTRAL OHIO BY 7 PM AND INTO THE COLUMBUS METROPOLITAN
AREA BY 8 PM.

THESE SHOWERS AND THUNDERSTORMS PRODUCED RAINFALL AMOUNTS OF 1 TO 2
INCHES OVER EASTCENTRAL INDIANA AND WESTCENTRAL OHIO BETWEEN 4 AND 6
PM. NUMEROUS REPORTS OF FLOODING HAVE ALSO BEEN REPORTED WITH THESE
STORMS.

ALL THE STORMS MOVING INTO CENTRAL OHIO HAVE THE POTENTIAL TO PRODUCE
DAMAGING WINDS...LARGE HAIL...FREQUENT LIGHTNING AND TORRENTIAL
DOWNPOURS.

THE GROUND REMAINS SATURATED OVER MOST OF CENTRAL OHIO AND THE
ADDITIONAL RAINFALL WILL CAUSE PONDING OF WATER ON ROADWAYS AND
STANDING WATER IN LOW LYING AREAS.

PEOPLE THROUGHOUT CENTRAL OHIO SHOULD BE PREPARED TO ACT QUICKLY AND
MOVE TOB HIGHER GROUND IF FLOODING IS OBSERVED OR A WARNING IS ISSUED.
LISTEN TO NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMATION.

SMITH

Special weather statement, Jul 30, 6:50 PM EDT, 1 hour 56 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>

Special weather statement, Jul 30, 7:51 PM EDT, 55 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>

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 30, 9:20 PM EDT	Flash Flood Warning	ILN	Ashland, Richland	100 min

Nearby

Flash Flood Warnings in Ohio, 1992 Every flash flood warning in 1992

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.