Alert archive / Mississippi / Flash Flood Warnings in 2021

Flash Flood Warning 53, NWS New Orleans, LA

June 19, 2021Jackson County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Jun 19, 2021, 3:37 AM CDT for Jackson County, Mississippi. It was in force for 4 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: Jun 19, 2021, 3:37 AM CDT (08:37 UTC)
Expired: Jun 19, 2021, 7:30 AM CDT
In force: 4 hr
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Flood severity: None

County Jackson County, MS

The radar

The Mobile radar (KMOB), 48 km from the middle of the area, began a volume at 08:39 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

Time	Report	Where	Remark
Jun 19, 5:15 AM CDT	FLASH FLOOD	Pascagoula, MS	NUMEROUS STREETS IMPASSABLE ACROSS JACKSON COUNTY. AT LEAST 2 RESCUES OF PERSONS STRANDED IN FLOODED VEHICLES.

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, 8.6 hours before the alert went out and 105 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: 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.

523 
WGUS54 KLIX 190837
FFWLIX
MSC059-191230-
/O.NEW.KLIX.FF.W.0053.210619T0837Z-210619T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in New Orleans has issued a

* Flash Flood Warning for...
  Jackson County in southern Mississippi...

* Until 730 AM CDT.

* At 337 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 inches of rain 
  have fallen. The expected rainfall rate is 1.5 to 2.5 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...
  Ocean Springs, Moss Point, Escatawpa, St. Martin, Gautier, 
  Vancleave, Hickory Hills, Wade, Helena, Big Point, Hurley, Gulf 
  Park Estates, Gulf Hills and Latimer.

This includes the following Interstates...
	Interstate 10 in Mississippi between mile markers 48 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 3038 8877 3043 8885 3043 8888 3074 8888
      3074 8841 3039 8839 3038 8841 3035 8839
      3036 8844 3032 8848 3032 8850 3035 8851
      3035 8858 3037 8859 3036 8859 3037 8860
      3036 8861 3034 8873 3037 8879 3038 8885

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1.5-2.5 INCHES IN 1 HOUR

$$

TE

1 follow-up statement

141 
WGUS74 KLIX 190939
FFSLIX

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

MSC059-191230-
/O.CON.KLIX.FF.W.0053.000000T0000Z-210619T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jackson MS-
439 AM CDT Sat Jun 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 AM CDT THIS 
MORNING FOR JACKSON COUNTY...

At 439 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 3 and 5 inches of rain have 
fallen. The expected rainfall rate is 1.5 to 2.5 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...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...
  Ocean Springs, Moss Point, Escatawpa, St. Martin, Gautier, 
  Vancleave, Hickory Hills, Wade, Helena, Big Point, Hurley, Gulf 
  Park Estates, Gulf Hills and Latimer.

This includes the following Interstates...
	Interstate 10 in Mississippi between mile markers 48 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 3038 8877 3043 8885 3043 8888 3074 8888
      3074 8841 3039 8839 3038 8841 3035 8839
      3036 8844 3032 8848 3032 8850 3035 8851
      3035 8858 3037 8859 3036 8859 3037 8860
      3036 8861 3034 8873 3037 8879 3038 8885

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...1.5-2.5 INCHES IN 1 HOUR

$$

TE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 9:52 PM CDT	Areal Flood Advisory	LIX	Hancock, Harrison	30 min
Jun 18, 10:22 PM CDT	Flash Flood Warning	LIX	Hancock, Harrison	5 hr
Jun 18, 11:23 PM CDT	Tornado Warning	LIX	Hancock, Harrison	22 min
Jun 18, 11:39 PM CDT	Tornado Warning	LIX	Harrison, Jackson	9 min
Jun 18, 11:40 PM CDT	Areal Flood Advisory	LIX	Hancock, Harrison, Jackson, Pearl River	64 min
Jun 18, 11:46 PM CDT	Tornado Warning	LIX	Hancock	14 min
Jun 19, 12:37 AM CDT	Tornado Warning	LIX	Hancock, Harrison	23 min
Jun 19, 12:44 AM CDT	Flash Flood Warning	LIX	Hancock, Harrison, Jackson, Pearl River	4 hr
Jun 19, 12:52 AM CDT	Areal Flood Advisory	LIX	Pearl River	4 hr
Jun 19, 12:53 AM CDT	Tornado Warning	LIX	Harrison	8 min
Jun 19, 1:52 AM CDT	Flash Flood Warning	LIX	Pearl River	4 hr
Jun 19, 2:56 AM CDT	River Flood Warning	LIX	Hancock	41 hr
Jun 19, 5:08 AM CDT	Tornado Warning	LIX	Jackson	37 min

Nearby

Flash Flood Warnings in Mississippi, 2021 Every 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.