Alert archive / Mississippi / Flash Flood Warnings in 2021

Flash Flood Warning 105, NWS New Orleans, LA

August 30, 2021Pearl River County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Aug 30, 2021, 5:43 AM CDT for Pearl River County, Mississippi. It was in force for 5 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
Aug 30, 2021, 5:43 AM CDT (10:43 UTC)
Expired
Aug 30, 2021, 10:45 AM CDT
In force
5 hr
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Flood severity
None

County Pearl River County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 10.7 hours before the alert went out and 85 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 00:00Z on 2021-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 25 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2021-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.1939587897Sfc1 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
25 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
679 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

286 
WGUS54 KLIX 301043
FFWLIX
MSC109-301345-
/O.NEW.KLIX.FF.W.0105.210830T1043Z-210830T1345Z/
/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
543 AM CDT Mon Aug 30 2021

The National Weather Service in New Orleans has issued a

* Flash Flood Warning for...
  Northeastern Pearl River County in southern Mississippi...

* Until 845 AM CDT.

* At 543 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 3 and 6 inches of rain 
  have fallen. Additional rainfall amounts of 2 to 5 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  mainly rural areas of Northeastern Pearl River County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3100 8934 3092 8934 3091 8957 3100 8958
      3100 8955 3101 8955 3101 8950 3100 8950
      3100 8948 3098 8948 3098 8943 3101 8942
      3101 8935 3100 8935

FLASH FLOOD...RADAR INDICATED

$$
1 follow-up statement
866 
WGUS54 KLIX 301324
FFWLIX
MSC109-301545-
/O.EXT.KLIX.FF.W.0105.000000T0000Z-210830T1545Z/
/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
824 AM CDT Mon Aug 30 2021

The National Weather Service in New Orleans has extended the

* Flash Flood Warning for...
  Northeastern Pearl River County in southern Mississippi...

* Until 1045 AM CDT.

* At 824 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 5 and 7 inches of rain 
  have fallen. Additional rainfall amounts of 2 to 4 inches are 
  possible in the warned area. Flash flooding is already occurring.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  mainly rural areas of Northeastern Pearl River County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3100 8934 3092 8934 3091 8957 3100 8958
      3100 8955 3101 8955 3101 8950 3100 8950
      3100 8948 3098 8948 3098 8943 3101 8942
      3101 8935 3100 8935

FLASH FLOOD...RADAR INDICATED

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 8:22 PM CDTTornado WarningLIXHancock, Pearl River38 min
Aug 29, 9:04 PM CDTTornado WarningLIXHancock, Harrison, Pearl River26 min
Aug 29, 9:05 PM CDTRiver Flood WarningLIXHancock, Pearl River12 days
Aug 29, 9:05 PM CDTRiver Flood WarningLIXPike, Walthall38 hr
Aug 29, 9:05 PM CDTRiver Flood WarningLIXHancock, Pearl River11 days
Aug 29, 9:06 PM CDTRiver Flood WarningLIXJackson9 days
Aug 29, 9:32 PM CDTTornado WarningLIXHancock, Pearl River13 min
Aug 29, 9:36 PM CDTTornado WarningLIXHancock, Harrison, Pearl River24 min
Aug 29, 10:01 PM CDTTornado WarningLIXHancock, Harrison, Pearl River14 min
Aug 29, 10:34 PM CDTTornado WarningLIXHancock, Harrison, Pearl River41 min
Aug 29, 11:45 PM CDTTornado WarningLIXHancock, Harrison31 min
Aug 30, 12:41 AM CDTTornado WarningLIXHarrison, Jackson49 min
Aug 30, 2:39 AM CDTFlash Flood Warning Considerable damage threatLIXHancock, Harrison, Jackson, Pearl River9 hr
Aug 30, 2:47 AM CDTTornado WarningLIXHarrison, Jackson47 min
Aug 30, 2:55 AM CDTFlash Flood Warning Considerable damage threatLIXAmite, Pike, Walthall5 hr
Aug 30, 2:55 AM CDTTornado WarningLIXJackson65 min
Aug 30, 3:55 AM CDTFlash Flood WarningLIXAmite, Pike, Walthall5 hr
Aug 30, 4:11 AM CDTFlash Flood WarningLIXHarrison, Jackson8 hr
Aug 30, 7:28 AM CDTTornado WarningLIXJackson22 min
Aug 30, 7:37 AM CDTTornado WarningLIXHarrison23 min
Aug 30, 8:02 AM CDTTornado WarningLIXHarrison, Jackson28 min
Aug 30, 9:30 AM CDTTornado WarningLIXJackson60 min
Aug 30, 10:53 AM CDTAreal Flood WarningLIXHancock, Pearl River35 hr
Aug 30, 11:04 AM CDTAreal Flood WarningLIXPearl River, Pike, Walthall35 hr
Aug 30, 11:17 AM CDTTornado WarningLIXJackson28 min
Aug 30, 11:34 AM CDTAreal Flood WarningLIXHancock, Harrison, Jackson, Pearl River34 hr
Aug 30, 12:33 PM CDTFlash Flood Warning EmergencyConsiderable damage threatLIXHarrison, Jackson3 hr
Aug 30, 2:57 PM CDTHeat AdvisoryLIXPearl River26 hr
Aug 30, 3:51 PM CDTAreal Flood WarningLIXHarrison, Jackson30 hr

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.