Alert archive / Louisiana / Flash Flood Warnings in 2023

Flash Flood Warning 14, NWS New Orleans, LA

February 16, 20238 parishes in Louisiana; Amite County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Feb 16, 2023, 4:51 PM CST for 8 parishes in Louisiana; Amite County, Mississippi. It was in force for 117 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: Feb 16, 2023, 4:51 PM CST (22:51 UTC)
Expired: Feb 16, 2023, 6:48 PM CST
In force: 117 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Flood severity: None

Counties East Baton Rouge Parish, LA, East Feliciana Parish, LA, Iberville Parish, LA, Livingston Parish, LA, Pointe Coupee Parish, LA, Saint Helena Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.9 hours before the alert went out and 144 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: 592 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 503 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 322 m²/s²
0-3 km storm-relative helicity: 367 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.2

Open this sounding in Storm Lab

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 Orleans, LA wrote its last area forecast discussion before this flash flood warning went out at Feb 16, 4:29 PM CST, 22 minutes earlier.

Area forecast discussion, Feb 16, 4:29 PM CST, 22 minutes before

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In the hours before

Special weather statement, Feb 16, 11:41 AM CST, 5 hours 10 minutes before

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Special weather statement, Feb 16, 2:57 PM CST, 1 hour 54 minutes before

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<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.
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      <p id="message2">
        Please try again in a few minutes.
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        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 New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 15, 8:56 PM CST	Marine Dense Fog Advisory	LIX		12 hr
Feb 16, 3:59 AM CST	Dense Fog Advisory	LIX	Ascension, Assumption, Jefferson, Livingston, Orleans, Plaquemines and 5 more	4 hr
Feb 16, 3:59 AM CST	Gale Watch	LIX		12 hr
Feb 16, 8:32 AM CST	Special Weather Statement	LIX	Pointe Coupee, West Feliciana	28 min
Feb 16, 8:59 AM CST	Special Weather Statement	LIX	West Feliciana	31 min
Feb 16, 9:30 AM CST	Special Weather Statement	LIX	East Feliciana	45 min
Feb 16, 11:39 AM CST	Flash Flood Warning	LIX	East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Helena, West Baton Rouge and 1 more	2 hr
Feb 16, 11:41 AM CST	Special Weather Statement	LIX	East Feliciana, Saint Helena	34 min
Feb 16, 11:51 AM CST	Areal Flood Advisory	LIX	Tangipahoa	3 hr
Feb 16, 1:23 PM CST	Areal Flood Advisory	LIX	East Feliciana, Saint Helena, Tangipahoa, Washington	112 min
Feb 16, 2:00 PM CST	Areal Flood Advisory	LIX	East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Helena, West Baton Rouge and 1 more	45 min
Feb 16, 2:57 PM CST	Special Weather Statement	LIX	Washington	33 min
Feb 16, 4:06 PM CST	Areal Flood Advisory	LIX	East Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee, Saint Helena and 2 more	45 min
Feb 16, 5:07 PM CST	Special Weather Statement	LIX	Tangipahoa	23 min
Feb 15, 6:36 PM CST	Special Weather Statement	LIX	Wilkinson	24 min

Nearby

Flash Flood Warnings in Louisiana, 2023 Flash Flood Warnings in Mississippi, 2023 Every flash flood warning in 2023

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.