Alert archive / Louisiana / Flash Flood Warnings in 2022

Flash Flood Warning 46, NWS Lake Charles, LA

December 11, 2022Acadia Parish, Jefferson Davis Parish, Saint Landry Parish, Louisiana

NWS Lake Charles, LA issued this flash flood warning at Dec 11, 2022, 4:26 AM CST for Acadia Parish, Jefferson Davis Parish, Saint Landry Parish, Louisiana. It was in force for 2 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: Dec 11, 2022, 4:26 AM CST (10:26 UTC)
Expired: Dec 11, 2022, 6:30 AM CST
In force: 2 hr
Issued by: NWS Lake Charles, LA
Area: Storm-based polygon
Flood severity: None

Counties Acadia Parish, LA, Jefferson Davis Parish, LA, Saint Landry Parish, LA

The radar

The Lake Charles radar (KLCH), 83 km from the middle of the area, began a volume at 10:27 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 10.4 hours before the alert went out and 81 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: 354 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 782 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.1

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 Lake Charles, LA wrote its last area forecast discussion before this flash flood warning went out at Dec 11, 4:02 AM CST, 24 minutes earlier.

Area forecast discussion, Dec 11, 4:02 AM CST, 24 minutes before

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Hazardous weather outlook, Dec 10, 4:07 PM CST, 12 hours 19 minutes before

Hazardous Weather Outlook
National Weather Service Lake Charles LA
407 PM CST Sat Dec 10 2022

LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262-112215-
Vernon-Rapides-Avoyelles-Beauregard-Allen-Evangeline-St. Landry-
Calcasieu-Jefferson Davis-Acadia-Lafayette-Upper St. Martin-
Vermilion-Iberia-St. Mary-Lower St. Martin-West Cameron-East Cameron-
Tyler-Hardin-Jefferson-Orange-Northern Jasper-Northern Newton-
Southern Jasper-Southern Newton-
407 PM CST Sat Dec 10 2022

This Hazardous Weather Outlook is for central Louisiana, south
central Louisiana, southwest Louisiana, west central Louisiana and
southeast Texas.

.DAY ONE...This afternoon and tonight.

Patchy to areas of fog will be possible tonight but a weak cold
frontal passage late tonight into Sunday should limit dense fog.

Scattered to numerous showers and storms will develop late this
evening and increase through the overnight hours. There is a
marginal risk of severe storms across southeast Texas and southwest
Louisiana north of I-10, with isolated damaging wind gusts and weak
tornadoes the primary threats. In addition, there is a Marginal Risk
for excessive rainfall that could produce minor flooding of urban and
low lying areas across southeast Texas north of I-10.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Showers and storms will be ongoing Sunday morning as a weak front
moves east through the area. A Marginal Risk for severe weather,
primarily isolated damaging wind gusts, will be possible across
portions of southern and central Louisiana north of I-10.

A strong storm system aloft with an associated surface cold front
will lead to widespread showers and thunderstorms from Tuesday into
Wednesday. At this time, there is a chance that a few of the storms
could be severe with all modes of severe weather possible. Heavy
rains leading to localized flooding will also be possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

GMZ430-432-435-450-452-455-470-472-475-112215-
Sabine Lake-Calcasieu Lake-Vermilion Bay-
Coastal waters from Cameron LA to High Island TX out 20 NM-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
Coastal waters from Lower Atchafalaya River to Intracoastal City LA
out 20 NM-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM-
Coastal waters from Lower Atchafalaya River to Intracoastal City LA
from 20 to 60 NM-
407 PM CST Sat Dec 10 2022

This Hazardous Weather Outlook is for the Gulf of Mexico and the
coastal lakes and bays of the Gulf of Mexico.

.DAY ONE...This afternoon and tonight.

Patchy to areas of fog can be expected. A few pockets of dense fog
will be possible but dense fog not expected to be widespread.

Scattered showers and storms are expected to increase late this
evening and overnight as a weak front moves into the area. Stronger
storms will be capable of producing gusty winds and heavy rainfall.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Periods of fog will be possible through early next week, mainly from
evening to late morning. By Tuesday into Wednesday, an approaching
strong storm system aloft with an associated surface cold front will
lead to widespread showers and thunderstorms. At this time, there is
a chance that a few of the storms could be severe with all modes of
severe weather possible. Heavy rains will also be possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Dec 10, 10:57 PM CST, 5 hours 29 minutes before

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Special weather statement, Dec 10, 11:17 PM CST, 5 hours 9 minutes before

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Special weather statement, Dec 10, 11:25 PM CST, 5 hours 1 minute before

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Special weather statement, Dec 11, 3:15 AM CST, 1 hour 11 minutes before

Special Weather Statement
National Weather Service Lake Charles LA
315 AM CST Sun Dec 11 2022

LAZ033-045-110945-
St. Landry LA-Upper St. Martin LA-
315 AM CST Sun Dec 11 2022

...Strong thunderstorms will impact portions of north central St.
Martin and northeastern St. Landry Parishes through 345 AM CST...

At 315 AM CST, Doppler radar was tracking strong thunderstorms along
a line extending from near Melville to near Port Barre. Movement was
east at 45 mph.

HAZARD...Wind gusts of 50 to 55 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Krotz Springs, Leonville, Melville, Palmetto and Port Barre.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3044 9204 3075 9192 3078 9177 3076 9175
      3074 9176 3070 9173 3067 9173 3066 9175
      3063 9174 3061 9176 3056 9176 3051 9173
      3051 9175 3050 9176 3050 9170 3044 9164
TIME...MOT...LOC 0915Z 260DEG 38KT 3071 9178 3051 9193

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...55 MPH

Stigger/87

The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 10, 8:30 PM CST	Marine Dense Fog Advisory	LCH		14 hr
Dec 10, 10:19 PM CST	Special Weather Statement	LCH	Calcasieu	41 min
Dec 10, 11:17 PM CST	Special Weather Statement	LCH	Vernon	58 min
Dec 10, 11:25 PM CST	Special Weather Statement	LCH	Jefferson Davis	65 min
Dec 11, 1:49 AM CST	Flash Flood Warning	LCH	Acadia, Evangeline, Saint Landry	3 hr
Dec 11, 2:08 AM CST	Severe Thunderstorm Warning	LCH	Evangeline, Saint Landry	23 min
Dec 11, 2:40 AM CST	Flash Flood Warning	LCH	Avoyelles, Saint Landry	2 hr
Dec 11, 2:49 AM CST	Severe Thunderstorm Warning Considerable damage threat	LCH	Saint Landry	26 min
Dec 11, 3:15 AM CST	Special Weather Statement	LCH	Saint Landry	30 min
Dec 11, 5:35 AM CST	Flash Flood Warning	LCH	Allen, Evangeline, Jefferson Davis, Saint Landry	55 min
Dec 11, 5:44 AM CST	Special Weather Statement	LCH	Calcasieu, Cameron	31 min
Dec 11, 5:59 AM CST	Special Marine Warning	LCH		24 min
Dec 11, 6:12 AM CST	Special Weather Statement	LCH	Jefferson Davis	33 min
Dec 11, 6:28 AM CST	Flash Flood Warning	LCH	Acadia, Allen, Evangeline, Jefferson Davis, Saint Landry	3 hr
Dec 11, 9:51 AM CST	River Flood Warning	LCH	Acadia, Evangeline, Saint Landry	7 days
Dec 11, 9:51 AM CST	River Flood Warning	LCH	Calcasieu	21 days
Dec 11, 9:51 AM CST	River Flood Warning	LCH	Calcasieu	6 days
Dec 10, 8:30 PM CST	Special Weather Statement	LCH	Tyler	30 min
Dec 10, 8:57 PM CST	Flash Flood Warning	LCH	Jasper, Tyler	3 hr
Dec 10, 9:33 PM CST	Special Weather Statement	LCH	Tyler	42 min
Dec 10, 10:50 PM CST	Flash Flood Warning	LCH	Jasper, Newton, Tyler	3 hr
Dec 10, 10:57 PM CST	Special Weather Statement	LCH	Jasper, Newton	33 min

Nearby

Flash Flood Warnings in Louisiana, 2022 Every flash flood warning in 2022

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; radar from the NEXRAD Level II archive.