Alert archive / Mississippi / Flash Flood Warnings in 2021

Flash Flood Warning 113, NWS New Orleans, LA

September 6, 2021Wilkinson County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Sep 6, 2021, 8:09 AM CDT for Wilkinson County, Mississippi. 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 outline as issued.

The facts

Issued
Sep 6, 2021, 8:09 AM CDT (13:09 UTC)
Expired
Sep 6, 2021, 10:15 AM CDT
In force
2 hr
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Flood severity
None

County Wilkinson County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 1.2 hours before the alert went out and 166 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, Jackson, MS at 12:00Z on 2021-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 838 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, Jackson, MS at 12:00Z on 2021-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.1939Sfc1 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
838 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
589 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

355 
WGUS54 KLIX 061309
FFWLIX
MSC157-061515-
/O.NEW.KLIX.FF.W.0113.210906T1309Z-210906T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New Orleans LA
Issued by National Weather Service Lake Charles LA
809 AM CDT Mon Sep 6 2021

The National Weather Service in New Orleans has issued a

* Flash Flood Warning for...
  Central Wilkinson County in southern Mississippi...

* Until 1015 AM CDT.

* At 808 AM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Flash flooding is ongoing.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  IMPACT...Flooding of small creeks and streams, urban areas, 
           highways, streets and underpasses as well as other 
           drainage and low lying areas.

* Some locations that will experience flooding include...
  Woodville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3129 9109 3102 9110 3103 9144 3130 9143

FLASH FLOOD...RADAR INDICATED

$$

Stigger/87
1 follow-up statement
575 
WGUS74 KLIX 061517
FFSLIX

Flash Flood Statement
National Weather Service New Orleans LA
Issued by National Weather Service Lake Charles LA
1017 AM CDT Mon Sep 6 2021

MSC157-061527-
/O.EXP.KLIX.FF.W.0113.000000T0000Z-210906T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wilkinson MS-
1017 AM CDT Mon Sep 6 2021

...FLASH FLOOD WARNING HAS EXPIRED FOR EASTERN WILKINSON COUNTY...

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

LAT...LON 3129 9109 3102 9110 3103 9144 3130 9143

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 4:00 AM CDTFlash Flood WatchLIXAmite, Pearl River, Pike, Walthall, Wilkinson17 hr
Sep 6, 7:17 AM CDTSpecial Weather StatementLIXWilkinson28 min
Sep 6, 7:45 AM CDTSpecial Weather StatementLIXWilkinson15 min
Sep 6, 7:59 AM CDTSpecial Weather StatementLIXAmite16 min
Sep 6, 8:38 AM CDTSpecial Weather StatementLIXAmite67 min
Sep 6, 9:39 AM CDTSpecial Weather StatementLIXWalthall36 min
Sep 6, 12:39 PM CDTSpecial Weather StatementLIXJackson36 min
Sep 6, 12:51 PM CDTSpecial Weather StatementLIXHarrison24 min
Sep 6, 1:20 PM CDTSpecial Weather StatementLIXJackson25 min

Nearby

Flash Flood Warnings in Mississippi, 2021Every flash flood warning in 2021

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.