Alert archive / New York / Flash Flood Warnings in 1999
Flash Flood Warning 43, NWS New York, NY
NWS New York, NY issued this flash flood warning at Sep 8, 1999, 3:31 PM EDT for Orange County, Rockland County, New York; Passaic County, New Jersey. It was in force for 119 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
- Sep 8, 1999, 3:31 PM EDT (19:31 UTC)
- Expired
- Sep 8, 1999, 5:30 PM EDT
- In force
- 119 min
- Issued by
- NWS New York, NY
- Area
- Whole counties
Counties Passaic County, NJ, Orange County, NY, Rockland County, NY
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 7.5 hours before the alert went out and 119 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.
- Mixed-layer CAPE
- 807 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 582 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
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.
NWS New York, NY wrote its last area forecast discussion before this flash flood warning went out at Sep 8, 10:29 AM EDT, 5 hours 2 minutes earlier.
Area forecast discussion, Sep 8, 10:29 AM EDT, 5 hours 2 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 New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 6:35 AM EDT | Flash Flood Warning | OKX | Suffolk | 2 hr |
| Sep 8, 1:47 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 58 min |
| Sep 8, 9:09 AM EDT | Flash Flood Warning | OKX | Naugatuck Valley Planning Region | 61 min |
Nearby
Flash Flood Warnings in New York, 1999Flash Flood Warnings in New Jersey, 1999Every flash flood 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.