Alert archive / Mississippi / Flash Flood Warnings in 2023

Flash Flood Warning 12, NWS New Orleans, LA

February 8, 2023Pike County, Walthall County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Feb 8, 2023, 11:43 PM CST for Pike County, Walthall County, Mississippi. It was in force for 3 hr. 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 8, 2023, 11:43 PM CST (05:43 UTC)
Expired: Feb 9, 2023, 3:10 AM CST
In force: 3 hr
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Flood severity: None

Counties Pike County, MS, Walthall County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 5.7 hours before the alert went out and 114 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: 1259 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 543 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 188 m²/s²
0-3 km storm-relative helicity: 227 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 4.8

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 8, 11:32 PM CST, 11 minutes earlier.

Area forecast discussion, Feb 8, 11:32 PM CST, 11 minutes before

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In the hours before

Local storm report, Feb 8, 9:16 PM CST, 2 hours 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
916 PM CST WED FEB 8 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0711 PM     TSTM WND DMG     4 N SALEM               31.29N 90.11W
02/08/2023                   WALTHALL           MS   EMERGENCY MNGR

            STRUCTURAL DAMAGE TO A CHURCH.

&&

LNN

Special weather statement, Feb 8, 9:55 PM CST, 1 hour 48 minutes before

Special Weather Statement
National Weather Service New Orleans LA
955 PM CST Wed Feb 8 2023

LAZ058>060-082-087-090445-
St. Charles LA-Lower Tangipahoa LA-St. John The Baptist LA-
Upper Jefferson LA-Upper Lafourche LA-
955 PM CST Wed Feb 8 2023

...A strong thunderstorm will impact portions of central St. John The
Baptist, St. Charles, north central Lafourche, northwestern Jefferson
and south central Tangipahoa Parishes through 1045 PM CST...

At 954 PM CST, Doppler radar was tracking a strong thunderstorm over
Des Allemands, or 11 miles southwest of Hahnville, moving northeast
at 60 mph.

HAZARD...Winds in excess of 35 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Hahnville, Laplace, Metairie, Killona, Norco, Paradis, Des Allemands,
Montz, Luling, Boutte, Ama, Bayou Gauche, Destrehan, Taft, New Sarpy,
St. Rose, Edgard and New Orleans Armstrong Airport.

This includes the following Interstates...
 Interstate 10 in Louisiana between mile markers 207 and 224.
 Interstate 55 in Louisiana between mile markers 1 and 16.
 Interstate 310 between mile markers 1 and 11.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

A Tornado Watch remains in effect until 1100 PM CST for southeastern
Louisiana.

&&

LAT...LON 2978 9062 3035 9039 3029 9029 3018 9039
      3010 9037 3006 9018 2966 9050
TIME...MOT...LOC 0354Z 211DEG 51KT 2982 9051

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

JRK

Special weather statement, Feb 8, 10:52 PM CST, 51 minutes before

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Local storm report, Feb 8, 11:18 PM CST, 25 minutes before

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Local storm report, Feb 8, 11:32 PM CST, 11 minutes before

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Local storm report, Feb 8, 11:34 PM CST, 9 minutes before

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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 8, 7:15 PM CST	Severe Thunderstorm Warning	LIX	Pointe Coupee, West Feliciana	60 min
Feb 8, 7:18 PM CST	Tornado Warning	LIX	Livingston, Saint Helena, Tangipahoa	42 min
Feb 8, 7:43 PM CST	Special Marine Warning	LIX		62 min
Feb 8, 7:44 PM CST	Special Marine Warning	LIX		46 min
Feb 8, 8:03 PM CST	River Flood Warning	LIX	Saint Tammany	6 days
Feb 8, 8:05 PM CST	Severe Thunderstorm Warning	LIX	West Feliciana	40 min
Feb 8, 9:14 PM CST	Special Marine Warning	LIX		2 hr
Feb 8, 9:29 PM CST	Flash Flood Warning	LIX	East Baton Rouge, East Feliciana, Livingston, Saint Helena, Tangipahoa, Washington	5 hr
Feb 8, 9:47 PM CST	Flood Watch	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard, Saint John the Baptist, Saint Tammany and 2 more	5 hr
Feb 8, 9:55 PM CST	Special Weather Statement	LIX	Saint Charles	50 min
Feb 8, 10:23 PM CST	Flash Flood Warning	LIX	Saint Tammany, Washington	5 hr
Feb 8, 10:30 PM CST	Flash Flood Warning	LIX	Jefferson, Lafourche, Saint Charles, Saint John the Baptist, Terrebonne	4 hr
Feb 8, 10:45 PM CST	Areal Flood Advisory	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles	29 min
Feb 8, 10:52 PM CST	Special Weather Statement	LIX	Lafourche, Orleans, Saint Charles	23 min
Feb 8, 11:09 PM CST	Flash Flood Warning	LIX	Saint Tammany, Washington	4 hr
Feb 8, 11:11 PM CST	Special Marine Warning	LIX		2 hr
Feb 8, 11:14 PM CST	Flash Flood Warning	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles	4 hr
Feb 8, 11:18 PM CST	Severe Thunderstorm Warning	LIX	Saint Tammany	42 min
Feb 8, 11:37 PM CST	Special Marine Warning	LIX		113 min
Feb 8, 11:50 PM CST	Special Weather Statement	LIX	Orleans	40 min
Feb 9, 12:40 AM CST	Special Marine Warning	LIX		95 min
Feb 9, 12:45 AM CST	Special Marine Warning	LIX		90 min
Feb 9, 12:59 AM CST	River Flood Warning	LIX	Tangipahoa	4 days
Feb 9, 1:01 AM CST	River Flood Warning	LIX	Saint Tammany	21 hr
Feb 9, 2:38 AM CST	Special Marine Warning	LIX		2 hr
Feb 9, 7:21 AM CST	River Flood Warning	LIX	Washington	37 hr
Feb 8, 6:14 PM CST	Special Weather Statement	LIX	Walthall	46 min
Feb 8, 6:23 PM CST	Special Weather Statement	LIX	Amite	37 min
Feb 8, 6:40 PM CST	Tornado Warning	LIX	Pike, Walthall	50 min
Feb 8, 6:56 PM CST	Special Weather Statement	LIX	Wilkinson	34 min
Feb 8, 8:01 PM CST	River Flood Warning	LIX	Pearl River	59 hr
Feb 8, 8:39 PM CST	Flash Flood Warning	LIX	Amite, Pike, Walthall	3 hr
Feb 8, 11:58 PM CST	Special Weather Statement	LIX	Hancock, Harrison	32 min
Feb 9, 1:47 AM CST	River Flood Warning	LIX	Pike, Walthall	41 hr
Feb 9, 1:49 AM CST	River Flood Warning	LIX	Pearl River	40 hr

Nearby

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.