Alert archive / Alabama / Flash Flood Warnings in 2021

Flash Flood Warning 26, NWS Birmingham, AL

June 10, 2021Pickens County, Alabama

NWS Birmingham, AL issued this flash flood warning at Jun 10, 2021, 5:37 AM CDT for Pickens 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: Jun 10, 2021, 5:37 AM CDT (10:37 UTC)
Expired: Jun 10, 2021, 11:30 AM CDT
In force: 6 hr
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Flood severity: None

County Pickens County, AL

The radar

The Columbus AFB radar (KGWX), 93 km from the middle of the area, began a volume at 10:36 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 00:00Z, 10.6 hours before the alert went out and 122 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: 50 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 867 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: -23 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

785 
WGUS54 KBMX 101037
FFWBMX
ALC107-101630-
/O.NEW.KBMX.FF.W.0026.210610T1037Z-210610T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
537 AM CDT Thu Jun 10 2021

The National Weather Service in Birmingham has issued a

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

* Until 1130 AM CDT.

* At 537 AM 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...
  Aliceville, Pickensville, Memphis, McMullen, Garden, Johnston 
  Lake, Bevill Lock And Dam, Benevola, George Downer Airport, 
  Dillburg, Cochrane and Gainesville Lake Campground.

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 3326 8831 3323 8790 3313 8789 3311 8794
      3308 8797 3307 8801 3306 8803 3305 8803
      3306 8804 3304 8803 3304 8804 3305 8807
      3304 8808 3304 8815 3303 8814 3302 8816
      3300 8817 3299 8834

FLASH FLOOD...RADAR INDICATED

$$

32/Davis

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 4:32 AM CDT	Areal Flood Advisory	BMX	Pickens	3 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.