Alert archive / Mississippi / Flash Flood Warnings in 2023

Flash Flood Warning 4, NWS Mobile, AL

January 4, 20234 counties in Mississippi

NWS Mobile, AL issued this flash flood warning at Jan 4, 2023, 2:05 AM CST for 4 counties in 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: Jan 4, 2023, 2:05 AM CST (08:05 UTC)
Expired: Jan 4, 2023, 8:15 AM CST
In force: 6 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties George County, MS, Greene County, MS, Perry County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 73 km from the middle of the area, began a volume at 08:05 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, 8.1 hours before the alert went out and 96 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: 2160 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 510 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 212 m²/s²
0-3 km storm-relative helicity: 227 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 9.8

Open this sounding in Storm Lab

The text

As transmitted.

396 
WGUS54 KMOB 040805
FFWMOB
MSC039-041-111-131-041415-
/O.NEW.KMOB.FF.W.0004.230104T0805Z-230104T1415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
205 AM CST Wed Jan 4 2023

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Western George County in southeastern Mississippi...
  Southern Greene County in southeastern Mississippi...
  Southern Perry County in southeastern Mississippi...
  Stone County in southeastern Mississippi...

* Until 815 AM CST Wednesday.

* At 205 AM CST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen in a short amount of time. 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.

  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...
  Wiggins, Lucedale, Leakesville, Perkinston, McHenry, Deep Creek, 
  Benndale, Barbara, Avent, Dale, Ramsey Springs, Leaf, Oak Grove, 
  Whites Crossing, Progress, Crossroads, Merrill, Big Level, Bexley 
  and Bond.

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 3098 8914 3124 8844 3101 8843 3087 8867
      3073 8880 3074 8888 3068 8888 3068 8923
      3065 8924 3065 8934 3091 8934 3091 8914

FLASH FLOOD...RADAR INDICATED

$$

RD

1 follow-up statement

188 
WGUS74 KMOB 041419
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
819 AM CST Wed Jan 4 2023

MSC039-041-111-131-041429-
/O.EXP.KMOB.FF.W.0004.000000T0000Z-230104T1415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
George MS-Greene MS-Perry MS-Stone MS-
819 AM CST Wed Jan 4 2023

...FLASH FLOOD WARNING HAS EXPIRED FOR WESTERN GEORGE, SOUTHERN 
GREENE AND STONE COUNTIES...

The heavy rain has ended. Additional flash flooding is no longer 
expected. Please continue to heed remaining road closures.

LAT...LON 3098 8914 3124 8844 3101 8843 3087 8867
      3073 8880 3074 8888 3068 8888 3068 8923
      3065 8924 3065 8934 3091 8934 3091 8914

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 3, 6:02 PM CST	Severe Thunderstorm Warning	MOB	Wayne	20 min
Jan 3, 7:33 PM CST	Severe Thunderstorm Warning	MOB	Wayne	42 min
Jan 3, 8:14 PM CST	Severe Thunderstorm Warning	MOB	Wayne	46 min
Jan 3, 10:48 PM CST	Tornado Warning	MOB	Wayne	42 min
Jan 3, 10:50 PM CST	Areal Flood Advisory	MOB	Wayne	6 hr
Jan 3, 10:57 PM CST	Special Weather Statement	MOB	Greene, Perry	48 min
Jan 3, 11:16 PM CST	Areal Flood Advisory	MOB	Greene, Perry, Wayne	6 hr
Jan 3, 11:27 PM CST	Severe Thunderstorm Warning	MOB	Greene, Perry, Wayne	48 min
Jan 3, 11:56 PM CST	Severe Thunderstorm Warning	MOB	Greene, Wayne	34 min
Jan 4, 12:03 AM CST	Special Weather Statement	MOB	Perry, Stone	42 min
Jan 4, 12:24 AM CST	Flash Flood Warning	MOB	Greene, Perry, Wayne	6 hr
Jan 4, 12:41 AM CST	Areal Flood Advisory	MOB	George, Greene, Perry, Stone	6 hr
Jan 4, 12:45 AM CST	Special Weather Statement	MOB	Greene, Stone	45 min
Jan 4, 12:54 AM CST	Severe Thunderstorm Warning	MOB	Greene, Perry	51 min
Jan 4, 1:31 AM CST	Special Weather Statement	MOB	Stone	59 min
Jan 4, 2:47 AM CST	Special Weather Statement	MOB	George	58 min
Jan 4, 8:24 AM CST	River Flood Warning	MOB	George, Greene, Perry	4 days
Jan 4, 8:26 AM CST	River Flood Warning	MOB	George, Greene, Wayne	5 days
Jan 4, 8:28 AM CST	River Flood Warning	MOB	George, Greene, Jackson	49 hr

Nearby

Flash Flood Warnings in Mississippi, 2023 Every flash flood warning in 2023

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.