Alert archive / Mississippi / Flash Flood Warnings in 2021

Flash Flood Warning 3, NWS Mobile, AL

March 16, 2021Wayne County, Mississippi

NWS Mobile, AL issued this flash flood warning at Mar 16, 2021, 3:51 PM CDT for Wayne County, Mississippi. It was in force for 6 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: Mar 16, 2021, 3:51 PM CDT (20:51 UTC)
Expired: Mar 16, 2021, 9:45 PM CDT
In force: 6 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

County Wayne County, MS

The radar

The Mobile radar (KMOB), 117 km from the middle of the area, began a volume at 20:53 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

Jackson, MS (KJAN), launched 12:00Z, 8.9 hours before the alert went out and 153 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: 812 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 660 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

347 
WGUS54 KMOB 162051
FFWMOB
MSC153-170245-
/O.NEW.KMOB.FF.W.0003.210316T2051Z-210317T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
351 PM CDT Tue Mar 16 2021

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Wayne County in southeastern Mississippi...

* Until 945 PM CDT.

* At 351 PM CDT, Doppler radar and automated rain gauges indicated 
  thunderstorms producing heavy rain across the warned area. Between 
  2 and 5 inches of rain have fallen. Additional rainfall amounts of 
  1 to 3 inches are possible in the warned area. Flash flooding is 
  ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar and automated gauges.

  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...
  Waynesboro, Clara, Buckatunna, Woodwards, West King, Boice, 
  Whistler, Winchester, Hiwannee, Chicora, Denham, Hollis Creek, 
  Strengthford, Eucutta, Gretna, Belmont and Lightsey.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3153 8845 3143 8894 3182 8894 3185 8865
      3189 8847

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

CGAL

1 follow-up statement

914 
WGUS74 KMOB 170034
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
734 PM CDT Tue Mar 16 2021

MSC153-170245-
/O.CON.KMOB.FF.W.0003.000000T0000Z-210317T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wayne MS-
734 PM CDT Tue Mar 16 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM CDT THIS 
EVENING FOR WAYNE COUNTY...

At 734 PM CDT, Thunderstorms have greatly decreased across the 
warned area. However, flash flooding is likely still ongoing. There 
are additional showers beginning to develop and this will be very 
closely monitored throughout the duration of the warning.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar and automated gauges.

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...
  Waynesboro, Clara, Buckatunna, Woodwards, West King, Boice, 
  Whistler, Winchester, Hiwannee, Chicora, Denham, Hollis Creek, 
  Strengthford, Eucutta, Gretna, Belmont and Lightsey.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3153 8845 3143 8894 3182 8894 3185 8865
      3189 8847

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 16, 11:28 AM CDT	Flash Flood Watch	MOB	Wayne	12 hr
Mar 16, 4:53 PM CDT	Wind Advisory	MOB	George, Greene, Perry, Stone, Wayne	28 hr
Mar 16, 5:07 PM CDT	Special Weather Statement	MOB	Wayne	38 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.