Alert archive / Louisiana / Flash Flood Watches in 2014
Flash Flood Watch 10, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood watch at Jul 18, 2014, 6:18 AM CDT for 11 parishes in Louisiana; 5 counties in Mississippi. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Jul 18, 2014, 6:18 AM CDT (11:18 UTC)
- Expired
- Jul 18, 2014, 3:32 PM CDT
- In force
- 9 hr
- Issued by
- NWS New Orleans, LA
- Flood severity
- None
Counties Assumption Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Iberville Parish, LA, Pointe Coupee Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS, Pearl River County, MS, Pike County, MS, Walthall County, MS, Wilkinson County, MS
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 11.3 hours before the alert went out and 238 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
- 1236 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 761 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 145 m²/s²
- 0-3 km storm-relative helicity
- 225 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 5.4
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS New Orleans, LA wrote its last area forecast discussion before this flash flood watch went out at Jul 18, 3:25 AM CDT, 2 hours 53 minutes earlier.
Area forecast discussion, Jul 18, 3:25 AM CDT, 2 hours 53 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>Hazardous weather outlook, Jul 18, 4:16 AM CDT, 2 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>In the hours before
Special weather statement, Jul 18, 6:08 AM CDT, 10 minutes before
LAZ034-046>050-181300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 608 AM CDT FRI JUL 18 2014 ...AN AREA OF MODERATE TO HEAVY RAIN MOVING EAST AFFECTING ASCENSION PARISH...WEST BATON ROUGE PARISH...POINTE COUPEE PARISH...EAST BATON ROUGE PARISH...LIVINGSTON PARISH...IBERVILLE PARISH... AT 603 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA OF MODERATE TO HEAVY RAIN ALONG A LINE EXTENDING FROM ZACHARY TO 9 MILES SOUTHEAST OF PLAQUEMINE...MOVING EAST AT 15 MPH. RAINFALL WILL AFFECT AREAS IN AND AROUND...BATON ROUGE AIRPORT...GARDERE...BATON ROUGE...WESTMINSTER...OAK HILLS PLACE...GREENWELL SPRING...PRAIRIEVILLE...DENHAM SPRINGS...WATSON AND WALKER HEAVY RAIN WILL ALSO RESULT IN REDUCED VISIBILITY ALONG INTERSTATE 10 AND 12. DRIVERS TRAVELING THROUGH THE IMPACTED AREAS SHOULD EXERCISE CAUTION. SOME PONDING OF WATER WILL ALSO BE POSSIBLE ON LOW LYING ROADWAYS AND IN AREAS OF POOR DRAINAGE. THIS IS ALSO DURING THE MORNING COMMUTE DRIVERS SHOULD ALLOW FOR EXTRA TIME TO REACH DESTINATIONS. BE PREPARED TO TAKE QUICK ACTION IF A WARNING IS ISSUED. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE LOCAL MEDIA OUTLETS FOR FURTHER DETAILS OR UPDATES FROM THE NATIONAL WEATHER SERVICE. MJH
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 11:22 AM CDT | Special Marine Warning | LIX | 38 min | |
| Jul 18, 11:55 AM CDT | Special Marine Warning | LIX | 50 min | |
| Jul 18, 12:01 PM CDT | Special Marine Warning | LIX | 29 min | |
| Jul 18, 12:02 PM CDT | Special Marine Warning | LIX | 28 min | |
| Jul 18, 12:36 PM CDT | Special Marine Warning | LIX | 39 min | |
| Jul 18, 12:44 PM CDT | Areal Flood Advisory | LIX | Assumption | 2 hr |
| Jul 18, 1:31 PM CDT | Special Marine Warning | LIX | 59 min | |
| Jul 18, 1:37 PM CDT | Special Marine Warning | LIX | 68 min | |
| Jul 18, 4:09 PM CDT | Special Marine Warning | LIX | 66 min | |
| Jul 18, 4:15 PM CDT | Special Marine Warning | LIX | 60 min | |
| Jul 18, 5:12 PM CDT | Special Marine Warning | LIX | 63 min | |
| Jul 18, 6:14 PM CDT | Special Marine Warning | LIX | 2 hr |
Nearby
Flash Flood Watches in Louisiana, 2014Flash Flood Watches in Mississippi, 2014Every flash flood watch in 2014
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.