Alert archive / Louisiana / Flash Flood Watches in 2019
Flash Flood Watch 2, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood watch at Apr 17, 2019, 3:28 PM CDT for 8 parishes in Louisiana; 4 counties in Mississippi. It took effect at Apr 18, 2019, 7:00 AM CDT. It was in force for 14 hr.
The area
The counties it named.
The facts
- Issued
- Apr 17, 2019, 3:28 PM CDT (20:28 UTC)
- In effect from
- Apr 18, 2019, 7:00 AM CDT
- Expired
- Apr 18, 2019, 9:13 PM CDT
- In force
- 14 hr
- Issued by
- NWS New Orleans, LA
- Flood severity
- None
Counties East Baton Rouge Parish, LA, East Feliciana Parish, LA, Pointe Coupee Parish, LA, Saint Helena Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS, Pike County, MS, Walthall County, MS, Wilkinson County, MS
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 8.5 hours before the alert went out and 130 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 962 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Apr 17, 3:53 AM CDT, 11 hours 35 minutes earlier.
Area forecast discussion, Apr 17, 3:53 AM CDT, 11 hours 35 minutes before
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</html>Hazardous weather outlook, Apr 17, 1:52 PM CDT, 1 hour 36 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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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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</html>The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 3:44 PM CDT | Small Craft Advisory | LIX | 66 hr |
Nearby
Flash Flood Watches in Louisiana, 2019Flash Flood Watches in Mississippi, 2019Every flash flood watch in 2019
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.