Alert archive / Mississippi / Flash Flood Warnings in 2021

Flash Flood Warning 60, NWS New Orleans, LA

June 21, 2021Jackson County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Jun 21, 2021, 10:27 PM CDT for Jackson County, Mississippi. It was in force for 93 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 21, 2021, 10:27 PM CDT (03:27 UTC)
Expired: Jun 22, 2021, 12:00 AM CDT
In force: 93 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Flood severity: None

County Jackson County, MS

The radar

The Mobile radar (KMOB), 42 km from the middle of the area, began a volume at 03:29 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.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 3.5 hours before the alert went out and 114 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: 55 J/kg
Mixed-layer CIN: -129 J/kg
Mixed-layer LCL: 1096 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -47 m²/s²
0-3 km storm-relative helicity: -57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

881 
WGUS54 KLIX 220327
FFWLIX
MSC059-220500-
/O.NEW.KLIX.FF.W.0060.210622T0327Z-210622T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New Orleans LA
1027 PM CDT Mon Jun 21 2021

The National Weather Service in New Orleans has issued a

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

* Until midnight CDT.

* At 1027 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. The expected rainfall rate is 1 
  to 1.5 inches in 1 hour. Additional rainfall amounts of 1 to 2 
  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...
  Moss Point, Escatawpa, Gautier, Helena and Hickory Hills.

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.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 3035 8870 3041 8868 3050 8852 3051 8852
      3053 8841 3039 8839 3038 8841 3037 8840
      3035 8840 3036 8843 3036 8845 3033 8845
      3033 8851 3035 8858 3037 8859 3036 8859
      3037 8862

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

$$

PG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 7:56 PM CDT	Flood Watch	LIX	Pearl River	6 min
Jun 21, 8:05 PM CDT	Flash Flood Watch	LIX	Pearl River	23 hr
Jun 21, 8:36 PM CDT	Special Weather Statement	LIX	Amite, Wilkinson	54 min
Jun 21, 8:48 PM CDT	Special Weather Statement	LIX	Hancock	42 min
Jun 21, 9:01 PM CDT	Severe Thunderstorm Warning	LIX	Amite, Wilkinson	29 min
Jun 21, 9:31 PM CDT	Severe Thunderstorm Warning	LIX	Amite, Wilkinson	44 min
Jun 21, 9:33 PM CDT	Special Weather Statement	LIX	Harrison	42 min
Jun 21, 9:44 PM CDT	Flash Flood Warning	LIX	Hancock, Harrison	2 hr
Jun 21, 10:09 PM CDT	Special Weather Statement	LIX	Jackson	36 min
Jun 22, 6:00 AM CDT	River Flood Warning	LIX	Harrison	69 hr
Jun 22, 6:02 AM CDT	River Flood Warning	LIX	Harrison	47 hr
Jun 22, 9:39 AM CDT	River Flood Warning	LIX	Jackson	4 days
Jun 22, 5:10 PM CDT	Areal Flood Advisory	LIX	Harrison, Jackson	2 hr
Jun 22, 6:14 PM CDT	Flash Flood Warning	LIX	Harrison, Jackson	108 min
Jun 22, 6:32 PM CDT	Special Weather Statement	LIX	Harrison	28 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.