Alert archive / Alabama / Flash Flood Warnings in 2021

Flash Flood Warning 96, NWS Mobile, AL

October 4, 2021Butler County, Conecuh County, Alabama

NWS Mobile, AL issued this flash flood warning at Oct 4, 2021, 9:41 PM CDT for Butler County, Conecuh County, Alabama. 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: Oct 4, 2021, 9:41 PM CDT (02:41 UTC)
Expired: Oct 5, 2021, 3:45 AM CDT
In force: 6 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties Butler County, AL, Conecuh County, AL

The radar

The Ft Rucker radar (KEOX), 114 km from the middle of the area, began a volume at 02:44 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 2.7 hours before the alert went out and 264 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: 682 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 959 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 17 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

390 
WGUS54 KMOB 050241
FFWMOB
ALC013-035-050845-
/O.NEW.KMOB.FF.W.0096.211005T0241Z-211005T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
941 PM CDT Mon Oct 4 2021

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Butler County in south central Alabama...
  Central Conecuh County in south central Alabama...

* Until 345 AM CDT Tuesday.

* At 941 PM CDT, Doppler radar indicated bandS of showers and 
  thunderstorms producing very heavy rainfall and repeatedly moving 
  across the warned area. Between 2 and 3 inches of rain have 
  already fallen. Excessive runoff from additional torrential 
  downpours is expected to result in flash flooding.

  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...
  Greenville, Evergreen, Georgiana, McKenzie, I65 And US 84, 
  Chapman, East Chapman, Avant, Starlington, Bolling, Brushy Creek, 
  Providence, Shell, Mount Olive, Garland, Odom Crossroads, 
  Shacklesville, Wald, Grace and Industry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3152 8670 3146 8670 3140 8707 3153 8715
      3169 8700 3195 8662 3194 8645 3185 8645
      3184 8644 3183 8645 3167 8645 3166 8646
      3165 8650 3156 8650 3152 8662

FLASH FLOOD...RADAR INDICATED

$$

21/CLL

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 4, 7:51 PM CDT	Areal Flood Advisory	MOB	Baldwin, Clarke, Monroe, Washington	114 min
Oct 4, 8:46 PM CDT	Areal Flood Advisory	MOB	Baldwin, Conecuh, Escambia, Monroe	3 hr
Oct 4, 8:59 PM CDT	Areal Flood Advisory	MOB	Butler, Conecuh, Covington, Crenshaw	3 hr
Oct 4, 10:46 PM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Oct 4, 11:37 PM CDT	Flash Flood Warning	MOB	Baldwin	6 hr
Oct 5, 1:38 AM CDT	Areal Flood Advisory	MOB	Butler, Conecuh, Covington, Crenshaw, Escambia	4 hr
Oct 5, 2:28 AM CDT	Areal Flood Advisory	MOB	Covington	3 hr
Oct 5, 4:17 PM CDT	Areal Flood Advisory	MOB	Conecuh, Escambia	3 hr
Oct 5, 4:51 PM CDT	Flash Flood Warning	MOB	Conecuh, Escambia	6 hr
Oct 5, 5:53 PM CDT	Areal Flood Advisory	MOB	Butler, Conecuh, Covington, Escambia, Monroe	4 hr
Oct 5, 6:57 PM CDT	Flash Flood Warning	MOB	Conecuh, Covington, Escambia	6 hr

Nearby

Flash Flood Warnings in Alabama, 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.