Alert archive / Mississippi / Flash Flood Warnings in 2021

Flash Flood Warning 51, NWS New Orleans, LA

June 19, 2021Saint Tammany Parish, Louisiana; 4 counties in Mississippi

NWS New Orleans, LA issued this flash flood warning at Jun 19, 2021, 12:44 AM CDT for Saint Tammany Parish, Louisiana; 4 counties in Mississippi. It was in force for 4 hr. 3 reports 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
Jun 19, 2021, 12:44 AM CDT (05:44 UTC)
Expired
Jun 19, 2021, 4:45 AM CDT
In force
4 hr
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Flood severity
None

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

The radar

The Mobile radar (KMOB), 81 km from the middle of the area, began a volume at 05:46 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.

What was reported inside it

TimeReportWhereRemark
Jun 19, 1:32 AM CDTFLOOD6 Wnw Biloxi, MSROAD FLOODING OCCURRING NEAR BILOXI.
Jun 19, 2:14 AM CDTFLASH FLOODKiln, MSNUMEROUS ROADS CLOSED AND IMPASSABLE DUE TO HIGH WATER. A FEW HIGH WATER RESCUES NECESSARY WHERE PEOPLE DROVE AROUND BARRICADES.
Jun 19, 4:00 AM CDTFLASH FLOOD4 Nnw Gulfport, MSFLASH FLOODING REPORTED AT THE PALM APARTMENTS IN GULFPORT.

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 00:00Z, 5.7 hours before the alert went out and 67 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 2021-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 174 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 2021-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 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
174 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
572 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
124 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted.

241 
WGUS54 KLIX 190544
FFWLIX
LAC103-MSC045-047-059-109-190945-
/O.NEW.KLIX.FF.W.0051.210619T0544Z-210619T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New Orleans LA
1244 AM CDT Sat Jun 19 2021

The National Weather Service in New Orleans has issued a

* Flash Flood Warning for...
  Northeastern St. Tammany Parish in southeastern Louisiana...
  Northern Hancock County in southern Mississippi...
  Harrison County in southern Mississippi...
  Jackson County in southern Mississippi...
  Southern Pearl River County in southern Mississippi...

* Until 445 AM CDT.

* At 1244 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen. The expected rainfall rate is 1 to 2 inches in 1 
  hour. Additional rainfall amounts of 3 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...
  Gulfport, Biloxi, Ocean Springs, Long Beach, Moss Point, Picayune, 
  St. Martin, Diamondhead, Escatawpa, Gautier, D'iberville, Sun, 
  Lyman, Saucier, Latimer, Gulf Hills, Kiln, Gulf Park Estates, 
  Vancleave and Hickory Hills.

This includes the following Interstates...
	Interstate 110 in Mississippi between mile markers 3 and 4.
	Interstate 59 in Mississippi between mile markers 1 and 15.
	Interstate 10 in Mississippi between mile markers 21 and 76.
	Interstate 59 in Louisiana between mile markers 8 and 11.

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 3042 9001 3066 9000 3065 8924 3068 8923
      3068 8888 3074 8888 3074 8841 3037 8840
      3032 8850 3035 8851 3037 8859 3035 8874
      3043 8885 3043 8899 3042 8901 3040 8886
      3038 8907 3031 8929 3034 8927 3040 8930

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR

$$

TE
2 follow-up statements
628 
WGUS74 KLIX 190706
FFSLIX

Flash Flood Statement
National Weather Service New Orleans LA
206 AM CDT Sat Jun 19 2021

LAC103-190716-
/O.CAN.KLIX.FF.W.0051.000000T0000Z-210619T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
St. Tammany LA-
206 AM CDT Sat Jun 19 2021

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN ST. TAMMANY 
PARISH...

Flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

A Flash Flood Watch remains in effect until 700 AM CDT Sunday for 
portions of southeast Louisiana and Mississippi.

LAT...LON 3066 8984 3065 8924 3068 8923 3068 8888
      3074 8888 3074 8841 3037 8840 3032 8850
      3037 8859 3035 8874 3043 8885 3043 8893
      3042 8901 3040 8886 3038 8907 3031 8929
      3034 8927 3040 8930 3041 8968 3056 8980

$$

MSC045-047-059-109-190945-
/O.CON.KLIX.FF.W.0051.000000T0000Z-210619T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hancock MS-Harrison MS-Jackson MS-Pearl River MS-
206 AM CDT Sat Jun 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 AM CDT EARLY THIS 
MORNING FOR NORTHERN HANCOCK, HARRISON, JACKSON AND SOUTHERN PEARL 
RIVER COUNTIES...

At 206 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 2 and 5 inches of rain have 
fallen. The expected rainfall rate is 1 to 2.5 inches in 1 hour. 
Additional rainfall amounts of 2 to 4 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...
  Gulfport, Biloxi, Ocean Springs, Long Beach, Moss Point, Picayune, 
  St. Martin, Diamondhead, Escatawpa, Gautier, D'iberville, Lyman, 
  Saucier, Latimer, Gulf Hills, Gulf Park Estates, Vancleave, 
  Hickory Hills, Kiln and Wade.

This includes the following Interstates...
	Interstate 110 in Mississippi between mile markers 3 and 4.
	Interstate 59 in Mississippi between mile markers 1 and 15.
	Interstate 10 in Mississippi between mile markers 21 and 76.

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 3066 8984 3065 8924 3068 8923 3068 8888
      3074 8888 3074 8841 3037 8840 3032 8850
      3037 8859 3035 8874 3043 8885 3043 8893
      3042 8901 3040 8886 3038 8907 3031 8929
      3034 8927 3040 8930 3041 8968 3056 8980

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2.5 INCHES IN 1 HOUR

$$

TE
623 
WGUS74 KLIX 190717
FFSLIX

Flash Flood Statement
National Weather Service New Orleans LA
217 AM CDT Sat Jun 19 2021

MSC059-190727-
/O.CAN.KLIX.FF.W.0051.000000T0000Z-210619T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jackson MS-
217 AM CDT Sat Jun 19 2021

...FLASH FLOOD WARNING IS CANCELLED FOR JACKSON COUNTY...

Flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

A Flash Flood Watch remains in effect until 700 AM CDT Sunday for 
portions of southeast Louisiana and Mississippi.

LAT...LON 3066 8984 3065 8925 3068 8923 3068 8888
      3043 8888 3042 8901 3040 8886 3038 8907
      3031 8929 3034 8927 3040 8930 3041 8968
      3045 8968 3050 8975 3056 8980 3062 8982
      3064 8981

$$

MSC045-047-109-190945-
/O.CON.KLIX.FF.W.0051.000000T0000Z-210619T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hancock MS-Harrison MS-Pearl River MS-
217 AM CDT Sat Jun 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 AM CDT EARLY THIS 
MORNING FOR NORTHERN HANCOCK, HARRISON AND SOUTHERN PEARL RIVER 
COUNTIES...

At 217 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 3 and 6 inches of rain have 
fallen. The expected rainfall rate is 2 to 3 inches in 1 hour. 
Additional rainfall amounts of 2 to 5 inches are possible in the 
warned area. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Radar.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Gulfport, Biloxi, Long Beach, Picayune, Diamondhead, St. Martin, 
  D'iberville, Kiln, Lyman, Saucier, Latimer and Gulfport Airport.

This includes the following Interstates...
	Interstate 110 in Mississippi between mile markers 3 and 4.
	Interstate 59 in Mississippi between mile markers 1 and 15.
	Interstate 10 in Mississippi between mile markers 21 and 47.

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 3066 8984 3065 8925 3068 8923 3068 8888
      3043 8888 3042 8901 3040 8886 3038 8907
      3031 8929 3034 8927 3040 8930 3041 8968
      3045 8968 3050 8975 3056 8980 3062 8982
      3064 8981

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...2-3 INCHES IN 1 HOUR

$$

TE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 7:15 PM CDTAreal Flood AdvisoryLIXJefferson, Orleans, Plaquemines, Saint Bernard101 min
Jun 18, 8:28 PM CDTSpecial Marine WarningLIX32 min
Jun 18, 8:45 PM CDTSpecial Weather StatementLIXSaint Bernard30 min
Jun 18, 9:02 PM CDTSpecial Weather StatementLIXSaint Bernard28 min
Jun 18, 9:24 PM CDTSpecial Marine WarningLIX21 min
Jun 18, 9:32 PM CDTSpecial Weather StatementLIXSaint Bernard13 min
Jun 18, 9:33 PM CDTSpecial Marine WarningLIX28 min
Jun 18, 9:41 PM CDTSpecial Marine WarningLIX34 min
Jun 18, 9:52 PM CDTAreal Flood AdvisoryLIXSaint Tammany30 min
Jun 18, 10:12 PM CDTSpecial Marine WarningLIX33 min
Jun 18, 10:22 PM CDTFlash Flood WarningLIXSaint Tammany5 hr
Jun 18, 10:28 PM CDTSpecial Marine WarningLIX32 min
Jun 18, 10:56 PM CDTSpecial Marine WarningLIX64 min
Jun 18, 10:59 PM CDTSpecial Marine WarningLIX31 min
Jun 18, 11:16 PM CDTSpecial Marine WarningLIX44 min
Jun 18, 11:40 PM CDTAreal Flood AdvisoryLIXSaint Tammany64 min
Jun 18, 11:41 PM CDTSpecial Marine WarningLIX19 min
Jun 18, 11:43 PM CDTSpecial Marine WarningLIX32 min
Jun 18, 11:46 PM CDTTornado WarningLIXSaint Tammany14 min
Jun 19, 12:04 AM CDTSpecial Marine WarningLIX26 min
Jun 19, 12:26 AM CDTSpecial Marine WarningLIX64 min
Jun 19, 12:32 AM CDTSpecial Marine WarningLIX58 min
Jun 19, 12:52 AM CDTAreal Flood AdvisoryLIXWashington4 hr
Jun 19, 1:14 AM CDTSpecial Weather StatementLIXSaint Bernard46 min
Jun 19, 1:17 AM CDTSpecial Marine WarningLIX13 min
Jun 19, 1:30 AM CDTSpecial Marine WarningLIX45 min
Jun 19, 1:47 AM CDTSpecial Marine WarningLIX58 min
Jun 19, 2:09 AM CDTSpecial Marine WarningLIX36 min
Jun 19, 2:27 AM CDTSpecial Marine WarningLIX33 min
Jun 19, 2:33 AM CDTSpecial Weather StatementLIXSaint John the Baptist27 min
Jun 19, 3:26 AM CDTSpecial Marine WarningLIX64 min
Jun 19, 10:15 AM CDTSmall Craft AdvisoryLIX17 hr
Jun 18, 11:23 PM CDTTornado WarningLIXHancock, Harrison22 min
Jun 18, 11:39 PM CDTTornado WarningLIXHarrison, Jackson9 min
Jun 19, 12:37 AM CDTTornado WarningLIXHancock, Harrison23 min
Jun 19, 12:53 AM CDTTornado WarningLIXHarrison8 min
Jun 19, 1:52 AM CDTFlash Flood WarningLIXPearl River4 hr
Jun 19, 2:56 AM CDTRiver Flood WarningLIXHancock41 hr
Jun 19, 3:37 AM CDTFlash Flood WarningLIXJackson4 hr
Jun 19, 5:08 AM CDTTornado WarningLIXJackson37 min

Nearby

Flash Flood Warnings in Mississippi, 2021Flash Flood Warnings in Louisiana, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.