Alert archive / Mississippi / Flash Flood Warnings in 2018

Flash Flood Warning 2, NWS New Orleans, LA

April 14, 2018Saint Tammany Parish, Louisiana; Hancock County, Pearl River County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Apr 14, 2018, 12:11 PM CDT for Saint Tammany Parish, Louisiana; Hancock County, Pearl River County, Mississippi. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 14, 2018, 12:11 PM CDT (17:11 UTC)
Expired
Apr 14, 2018, 3:15 PM CDT
In force
3 hr
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Flood severity
None

Counties Saint Tammany Parish, LA, Hancock County, MS, Pearl River County, MS

What was reported inside it

TimeReportWhereRemark
Apr 14, 2:00 PM CDTFLASH FLOODKiln, MSMULTIPLE ROADS FLOODED AROUND KILN AND TO THE NORTH OF KILN IN HANCOCK COUNTY.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 5.2 hours before the alert went out and 29 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-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2018-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1802 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2018-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 222 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1802 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
534 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
222 m²/s²
0-3 km storm-relative helicity
293 m²/s²
Significant tornado parameter
1.6
Supercell composite
12.6

Open this sounding in Storm Lab

The text

As transmitted.

271 
WGUS54 KLIX 141711
FFWLIX
LAC103-MSC045-109-142015-
/O.NEW.KLIX.FF.W.0002.180414T1711Z-180414T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New Orleans LA
1211 PM CDT SAT APR 14 2018

The National Weather Service in New Orleans has issued a

* Flash Flood Warning for...
  Central St. Tammany Parish in southeastern Louisiana...
  Hancock County in southern Mississippi...
  Pearl River County in southern Mississippi...

* Until 315 PM CDT.

* At 1211 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to two inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Slidell, Picayune, Poplarville, Diamondhead, Pearl River, Sun,
  Kiln, Pearlington, Lacombe, Crossroads, Shoreline Park, Stennis
  Space Center, Bush, Mcneil and Slidell Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3090 8934 3043 8934 3018 8950 3018 8961
      3016 8966 3018 8968 3017 8972 3025 8987
      3026 8998 3030 8999 3034 9005 3067 8988
      3067 8984 3076 8983 3083 8978 3100 8971
      3100 8963

$$

TD
1 follow-up statement
691 
WGUS74 KLIX 142009
FFSLIX

Flash Flood Statement
National Weather Service New Orleans LA
309 PM CDT SAT APR 14 2018

LAC103-MSC045-109-142019-
/O.EXP.KLIX.FF.W.0002.000000T0000Z-180414T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
St. Tammany LA-Hancock MS-Pearl River MS-
309 PM CDT SAT APR 14 2018

...THE FLASH FLOOD WARNING FOR CENTRAL ST. TAMMANY PARISH...HANCOCK
AND PEARL RIVER COUNTIES WILL EXPIRE AT 315 PM CDT...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.

LAT...LON 3090 8934 3043 8934 3018 8950 3018 8961
      3016 8966 3018 8968 3017 8972 3025 8987
      3026 8998 3030 8999 3034 9005 3067 8988
      3067 8984 3076 8983 3083 8978 3100 8971
      3100 8963

$$

32

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 14, 4:24 AM CDTGale WarningLIX26 hr
Apr 14, 4:24 AM CDTSmall Craft AdvisoryLIX54 hr
Apr 14, 4:24 AM CDTWind AdvisoryLIXSaint Bernard, Saint John the Baptist12 hr
Apr 14, 6:18 AM CDTSpecial Weather StatementLIXPointe Coupee, West Feliciana27 min
Apr 14, 6:30 AM CDTTornado WarningLIXPointe Coupee15 min
Apr 14, 6:36 AM CDTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana54 min
Apr 14, 6:58 AM CDTSevere Thunderstorm WarningLIXEast Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Helena, West Baton Rouge and 1 more62 min
Apr 14, 7:31 AM CDTTornado WarningLIXEast Feliciana, Saint Helena44 min
Apr 14, 7:55 AM CDTSevere Thunderstorm WarningLIXEast Feliciana, Saint Helena, Tangipahoa50 min
Apr 14, 7:57 AM CDTTornado WarningLIXEast Baton Rouge, East Feliciana, Livingston, Saint Helena, West Baton Rouge48 min
Apr 14, 8:01 AM CDTSevere Thunderstorm WarningLIXAscension, Assumption, East Baton Rouge, Iberville, Lafourche, Livingston and 3 more59 min
Apr 14, 8:03 AM CDTTornado WarningLIXSaint Helena, Tangipahoa42 min
Apr 14, 8:18 AM CDTTornado WarningLIXAscension, East Baton Rouge, Livingston, Tangipahoa42 min
Apr 14, 8:22 AM CDTTornado WarningLIXSaint Helena, Tangipahoa38 min
Apr 14, 8:30 AM CDTSevere Thunderstorm WarningLIXEast Baton Rouge, Livingston, Saint Helena, Tangipahoa, Washington45 min
Apr 14, 8:45 AM CDTSevere Thunderstorm WarningLIXLivingston, Saint Helena, Saint Tammany, Tangipahoa, Washington45 min
Apr 14, 8:49 AM CDTTornado WarningLIXSaint Tammany, Tangipahoa, Washington41 min
Apr 14, 8:55 AM CDTTornado WarningLIXTangipahoa, Washington35 min
Apr 14, 9:00 AM CDTSevere Thunderstorm WarningLIXAscension, Assumption, Lafourche, Livingston, Saint Charles, Saint James and 3 more45 min
Apr 14, 9:03 AM CDTSpecial Marine WarningLIX42 min
Apr 14, 9:22 AM CDTSevere Thunderstorm WarningLIXAssumption, Lafourche, Terrebonne38 min
Apr 14, 9:27 AM CDTTornado WarningLIXAssumption, Lafourche, Saint James33 min
Apr 14, 9:30 AM CDTSevere Thunderstorm WarningLIXSaint Tammany, Tangipahoa, Washington45 min
Apr 14, 9:42 AM CDTSpecial Marine WarningLIX93 min
Apr 14, 9:44 AM CDTSevere Thunderstorm WarningLIXAssumption, Lafourche, Livingston, Saint Charles, Saint James, Saint John the Baptist and 1 more46 min
Apr 14, 9:51 AM CDTAreal Flood AdvisoryLIXAscension, Assumption, East Baton Rouge, East Feliciana, Iberville, Lafourche and 8 more3 hr
Apr 14, 10:14 AM CDTAreal Flood AdvisoryLIXSaint John the Baptist, Saint Tammany, Tangipahoa, Washington3 hr
Apr 14, 10:17 AM CDTAreal Flood AdvisoryLIXJefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles and 3 more3 hr
Apr 14, 10:21 AM CDTSpecial Weather StatementLIXSaint Tammany84 min
Apr 14, 10:26 AM CDTSevere Thunderstorm WarningLIXJefferson, Lafourche, Orleans, Saint Charles, Saint John the Baptist, Terrebonne49 min
Apr 14, 10:34 AM CDTSpecial Marine WarningLIX86 min
Apr 14, 10:52 AM CDTTornado Warning Tornado observedLIXSaint Tammany12 min
Apr 14, 11:11 AM CDTSpecial Marine WarningLIX94 min
Apr 14, 11:16 AM CDTSpecial Weather StatementLIXLafourche, Orleans, Terrebonne44 min
Apr 14, 11:37 AM CDTSevere Thunderstorm WarningLIXSaint Tammany22 min
Apr 14, 12:04 PM CDTSpecial Weather StatementLIXOrleans41 min
Apr 14, 12:13 PM CDTFlash Flood WarningLIXJefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles and 1 more3 hr
Apr 14, 12:28 PM CDTSpecial Marine WarningLIX92 min
Apr 14, 12:37 PM CDTSpecial Marine WarningLIX38 min
Apr 14, 12:54 PM CDTSpecial Marine WarningLIX96 min
Apr 14, 1:05 PM CDTSpecial Weather StatementLIXPlaquemines85 min
Apr 14, 2:26 PM CDTSpecial Marine WarningLIX2 hr
Apr 14, 2:39 PM CDTSpecial Weather StatementLIXSaint Bernard51 min
Apr 14, 3:16 PM CDTAreal Flood AdvisoryLIXJefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles and 1 more3 hr
Apr 14, 4:27 PM CDTSpecial Weather StatementLIXOrleans63 min
Apr 14, 4:33 PM CDTSpecial Marine WarningLIX87 min
Apr 14, 5:32 PM CDTSpecial Marine WarningLIX88 min
Apr 14, 5:35 PM CDTSpecial Marine WarningLIX115 min
Apr 14, 7:13 AM CDTTornado WarningLIXAmite, Wilkinson47 min
Apr 14, 7:59 AM CDTSevere Thunderstorm WarningLIXAmite, Pike61 min
Apr 14, 9:01 AM CDTTornado WarningLIXWalthall29 min
Apr 14, 11:39 AM CDTTornado WarningLIXPearl River22 min
Apr 14, 12:33 PM CDTSpecial Weather StatementLIXHancock, Harrison42 min
Apr 14, 1:07 PM CDTSpecial Weather StatementLIXHarrison53 min
Apr 14, 1:25 PM CDTFlash Flood WarningLIXHancock, Harrison, Jackson9 hr
Apr 14, 1:50 PM CDTSpecial Weather StatementLIXHarrison55 min
Apr 14, 2:06 PM CDTTornado WarningLIXHarrison11 min
Apr 14, 2:42 PM CDTSpecial Weather StatementLIXHarrison63 min
Apr 14, 3:43 PM CDTSpecial Weather StatementLIXJackson62 min
Apr 14, 4:46 PM CDTSpecial Weather StatementLIXHarrison59 min
Apr 14, 5:53 PM CDTSpecial Weather StatementLIXJackson67 min
Apr 14, 6:16 PM CDTTornado WarningLIXJackson29 min

Nearby

Flash Flood Warnings in Mississippi, 2018Flash Flood Warnings in Louisiana, 2018Every flash flood warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.