Alert archive / Mississippi / Flash Flood Warnings in 2021

Flash Flood Warning 59, NWS New Orleans, LA

June 21, 2021Hancock County, Harrison County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Jun 21, 2021, 9:44 PM CDT for Hancock County, Harrison 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: Jun 21, 2021, 9:44 PM CDT (02:44 UTC)
Expired: Jun 21, 2021, 11:45 PM CDT
In force: 2 hr
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Flood severity: None

Counties Hancock County, MS, Harrison County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 2.7 hours before the alert went out and 40 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.

920 
WGUS54 KLIX 220244
FFWLIX
MSC045-047-220445-
/O.NEW.KLIX.FF.W.0059.210622T0244Z-210622T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in New Orleans has issued a

* Flash Flood Warning for...
  Central Hancock County in southern Mississippi...
  Northern Harrison County in southern Mississippi...

* Until 1145 PM CDT.

* At 944 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. The expected rainfall rate is 1 
  to 2 inches in 1 hour. 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, highways,
           streets and underpasses as well as other poor drainage
           and low-lying areas.

* Some locations that will experience flash flooding include...
  Gulfport, Diamondhead, Kiln, Lyman, Saucier and Stennis Space 
  Center.

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 3039 8934 3029 8958 3041 8966 3050 8955
      3057 8954 3063 8945 3065 8901 3055 8897

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 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, 10:09 PM CDT	Special Weather Statement	LIX	Jackson	36 min
Jun 21, 10:27 PM CDT	Flash Flood Warning	LIX	Jackson	93 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.