Alert archive / Alabama / Flash Flood Warnings in 2024

Flash Flood Warning 9, NWS Mobile, AL

May 13, 2024Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at May 13, 2024, 11:41 PM CDT for Mobile County, Alabama. It was in force for 3 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: May 13, 2024, 11:41 PM CDT (04:41 UTC)
Expired: May 14, 2024, 2:45 AM CDT
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

County Mobile County, AL

The radar

The Mobile radar (KMOB), 16 km from the middle of the area, began a volume at 04:41 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, 4.7 hours before the alert went out and 163 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: 632 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 513 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 6.1

Open this sounding in Storm Lab

The text

As transmitted.

885 
WGUS54 KMOB 140441
FFWMOB
ALC097-140745-
/O.NEW.KMOB.FF.W.0009.240514T0441Z-240514T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
1141 PM CDT Mon May 13 2024

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Central Mobile County in southwestern Alabama...

* Until 245 AM CDT.

* At 1141 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen over the past couple hours. 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...
  Midtown Mobile, Downtown Mobile, Prichard, Tillmans Corner, 
  Chickasaw, I10 And I65, I65 And I165, Tacon, Mertz, Neshota, 
  Navco, Forest Hill, Plateau, West Hill, Whistler, North Mobile, 
  Wheelerville, Eight Mile and Mann.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3061 8820 3072 8819 3080 8809 3076 8802
      3075 8802 3074 8801 3073 8801 3072 8801
      3071 8800 3068 8800 3068 8801 3068 8802
      3060 8804 3057 8811 3058 8819

FLASH FLOOD...RADAR INDICATED

$$

Black

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 9:49 PM CDT	Areal Flood Advisory	MOB	Mobile	3 hr
May 13, 10:47 PM CDT	Special Weather Statement	MOB	Mobile	58 min
May 13, 10:55 PM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
May 13, 11:15 PM CDT	Special Marine Warning	MOB		90 min
May 14, 12:28 AM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
May 14, 12:33 AM CDT	Special Marine Warning	MOB		117 min
May 14, 12:44 AM CDT	Special Marine Warning	MOB		2 hr
May 14, 2:00 AM CDT	Special Marine Warning	MOB		90 min
May 14, 2:18 AM CDT	Gale Warning	MOB		7 hr
May 14, 2:18 AM CDT	Small Craft Advisory	MOB		15 hr
May 14, 2:32 AM CDT	Wind Advisory	MOB	Baldwin, Mobile	6 hr
May 14, 5:23 AM CDT	River Flood Warning	MOB	Baldwin	17 hr
May 14, 5:25 AM CDT	River Flood Warning	MOB	Baldwin	37 hr

Nearby

Flash Flood Warnings in Alabama, 2024 Every flash flood warning in 2024

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.