Alert archive / Alabama / Flash Flood Warnings in 2021

Flash Flood Warning 29, NWS Birmingham, AL

June 11, 2021Pickens County, Alabama

NWS Birmingham, AL issued this flash flood warning at Jun 11, 2021, 1:37 PM CDT for Pickens County, Alabama. 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 11, 2021, 1:37 PM CDT (18:37 UTC)
Expired: Jun 11, 2021, 4:00 PM CDT
In force: 2 hr
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Flood severity: None

County Pickens County, AL

The radar

The Columbus AFB radar (KGWX), 86 km from the middle of the area, began a volume at 18:38 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

Birmingham, AL (KBMX), launched 12:00Z, 6.6 hours before the alert went out and 109 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: 576 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 651 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 110 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

100 
WGUS54 KBMX 111837
FFWBMX
ALC107-112000-
/O.NEW.KBMX.FF.W.0029.210611T1837Z-210611T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
137 PM CDT Fri Jun 11 2021

The National Weather Service in Birmingham has issued a

* Flash Flood Warning for...
  East Central Pickens County in west central Alabama...

* Until 300 PM CDT.

* At 137 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. Additional rainfall amounts of 2 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...
  Gordo, Reform, Carrollton, Owens, Kirk and Pioneer.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3328 8817 3341 8807 3329 8784 3315 8784
      3314 8785 3314 8786 3314 8788 3313 8788
      3313 8790 3312 8791 3312 8792 3312 8793
      3319 8809

FLASH FLOOD...RADAR INDICATED

$$

25/Owen

1 follow-up statement

026 
WGUS54 KBMX 111943
FFWBMX
ALC107-112100-
/O.EXT.KBMX.FF.W.0029.000000T0000Z-210611T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
243 PM CDT Fri Jun 11 2021

The National Weather Service in Birmingham has extended the

* Flash Flood Warning for...
  East Central Pickens County in west central Alabama...

* Until 400 PM CDT.

* At 243 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. Additional rainfall amounts of 2 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...
  Gordo, Reform, Carrollton, Owens, Kirk and Pioneer.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3328 8817 3341 8807 3329 8784 3315 8784
      3314 8785 3314 8786 3314 8788 3313 8788
      3313 8790 3312 8791 3312 8792 3312 8793
      3319 8809

FLASH FLOOD...RADAR INDICATED

$$

25/Owen

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 9:46 AM CDT	Areal Flood Advisory	BMX	Tuscaloosa	3 hr
Jun 11, 10:47 AM CDT	Flash Flood Warning	BMX	Tuscaloosa	118 min
Jun 11, 12:10 PM CDT	Special Weather Statement	BMX	Pickens	65 min
Jun 11, 12:18 PM CDT	Special Weather Statement	BMX	Tuscaloosa	42 min
Jun 11, 12:47 PM CDT	Flash Flood Warning	BMX	Tuscaloosa	3 hr
Jun 11, 12:52 PM CDT	Areal Flood Advisory	BMX	Pickens	3 hr
Jun 11, 2:14 PM CDT	Special Weather Statement	BMX	Greene	31 min
Jun 11, 2:25 PM CDT	Areal Flood Advisory	BMX	Greene, Hale, Pickens	4 hr
Jun 11, 2:45 PM CDT	Special Weather Statement	BMX	Macon	45 min
Jun 11, 3:17 PM CDT	Special Weather Statement	BMX	Tallapoosa	28 min
Jun 11, 3:32 PM CDT	Areal Flood Advisory	BMX	Lamar	3 hr
Jun 11, 3:36 PM CDT	Special Weather Statement	BMX	Marion	39 min
Jun 11, 3:45 PM CDT	Special Weather Statement	BMX	Marion	30 min
Jun 11, 3:49 PM CDT	Special Weather Statement	BMX	Russell	26 min
Jun 11, 4:45 PM CDT	Special Weather Statement	BMX	Winston	45 min
Jun 11, 5:16 PM CDT	Special Weather Statement	BMX	Marion	44 min
Jun 11, 5:17 PM CDT	Special Weather Statement	BMX	Lamar	28 min

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.