Alert archive / Alabama / Flash Flood Warnings in 2021

Flash Flood Warning 31, NWS Birmingham, AL

June 19, 2021Jefferson County, Alabama

NWS Birmingham, AL issued this flash flood warning at Jun 19, 2021, 9:06 PM CDT for Jefferson County, Alabama. It was in force for 5 hr. 16 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 19, 2021, 9:06 PM CDT (02:06 UTC)
Expired: Jun 20, 2021, 2:00 AM CDT
In force: 5 hr
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Flood severity: None

County Jefferson County, AL

The radar

The Birmingham radar (KBMX), 33 km from the middle of the area, began a volume at 02:06 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.

What was reported inside it

Time	Report	Where	Remark
Jun 19, 9:28 PM CDT	FLASH FLOOD	1 Ese Dolomite, AL	FLASH FLOODING ALONG ALLISON-BONNET MEMORIAL DRIVE NEAR I-59. STRANDED CARS.
Jun 19, 9:30 PM CDT	FLASH FLOOD	1 Sse Forestdale, AL	* 1 FATAL * A MAN WAS WASHED AWAY IN FLOOD WATERS NEAR PEBBLE CREEK PKWY AND HWY 78 IN FORESTDALE.
Jun 19, 9:45 PM CDT	FLASH FLOOD	1 Ssw Tarrant, AL	SEVERAL ROADS FLOODED IN TARRANT.
Jun 19, 9:50 PM CDT	FLASH FLOOD	1 Sse Forestdale, AL	FLOODING OVER ROAD ALONG PEBBLE CREEK PKWY.
Jun 19, 9:50 PM CDT	FLASH FLOOD	1 Ssw Kingston, AL	MULTIPLE CARS STUCK IN FLOODWATER AT 1ST AVE N. AND 41ST ST. N.
Jun 19, 10:12 PM CDT	FLASH FLOOD	1 Nw Midfield, AL	SEVERAL FEET OF WATER OVER GRASSELLI RD. FLOODING ALSO REPORTED ON SEVERAL OTHER STREETS IN THE MIDFIELD/FAIRFIELD AREA.
Jun 19, 10:23 PM CDT	FLASH FLOOD	1 Ssw Vulcan Park, AL	WATER RESCUE (CAR) ONGOING NEAR INTERSECTION OF VALLEY AVE AND CLERMONT DR.
Jun 19, 10:27 PM CDT	FLASH FLOOD	Forestdale, AL	PD REPORTS MULTIPLE ROADS FLOODED, SOME IMPASSABLE, THROUGHOUT THE CITY.
Jun 19, 10:56 PM CDT	FLASH FLOOD	1 Nw Ketona Lakes, AL	WATER RESCUE FROM CAR. REPORTED THAT PERSON DROVE AROUND POLICE BARRICADE.
Jun 19, 11:06 PM CDT	FLASH FLOOD	Midfield, AL	DR MARTIN LUTHER KING DR AT AARON ARONOV DR IS IMPASSABLE. APPROXIMATELY 2 FT OF WATER FLOWING DOWN THE ROADWAY.
Jun 19, 11:11 PM CDT	FLASH FLOOD	1 Nnw Ketona Lakes, AL	PORTION OF PINE HILL RD AND BLACK CREEK RD IS IMPASSABLE.
Jun 19, 11:25 PM CDT	FLASH FLOOD	Ensley, AL	FD CONDUCTING WATER RESCUES NEAR THE INTERSECTION OF 22ND ST AND AVE L.
Jun 19, 11:53 PM CDT	FLASH FLOOD	Tarrant, AL	POLICE BLOCKING OFF SPRINGDALE RD NEAR SPRINGDALE LN DUE TO FLOODING.
Jun 19, 11:57 PM CDT	FLASH FLOOD	1 Ssw Mountain Brook, AL	MOUNTAIN BROOK PKWY IS IMPASSABLE BETWEEN GUILFORD RD AND SOUTHWOOD RD.
Jun 20, 12:04 AM CDT	FLASH FLOOD	2 Ene Midfield, AL	APARTMENT COMPLEX FLOODED ON LEE COURT SW.
Jun 20, 12:27 AM CDT	FLASH FLOOD	1 Nw Bjcc, AL	CARS STALLED IN FLOOD WATERS UP TO HEADLIGHTS AT 16TH ST N AND 20TH AVE N.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 2.1 hours before the alert went out and 31 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: 380 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 475 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 190 m²/s²
0-3 km storm-relative helicity: 231 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

511 
WGUS54 KBMX 200206
FFWBMX
ALC073-200515-
/O.NEW.KBMX.FF.W.0031.210620T0206Z-210620T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
906 PM CDT Sat Jun 19 2021

The National Weather Service in Birmingham has issued a

* Flash Flood Warning for...
  Jefferson County in central Alabama...

* Until 1215 AM CDT.

* At 906 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 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...
  Birmingham, Hoover, Vestavia Hills, Bessemer, Homewood, Pelham, 
  Mountain Brook, Trussville, Helena, Hueytown, Gardendale, 
  Irondale, Leeds, Moody, Fairfield, Fultondale, Center Point, 
  Pleasant Grove, Clay and Pinson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3347 8667 3342 8672 3342 8675 3337 8678
      3336 8683 3333 8683 3333 8688 3325 8698
      3325 8707 3328 8707 3331 8716 3340 8725
      3359 8708 3382 8673 3377 8665 3377 8654
      3366 8653 3347 8660

FLASH FLOOD...RADAR INDICATED

$$

87/Grantham

2 follow-up statements

077 
WGUS74 KBMX 200249
FFSBMX

Flash Flood Statement
National Weather Service Birmingham AL
949 PM CDT Sat Jun 19 2021

ALC073-200515-
/O.CON.KBMX.FF.W.0031.000000T0000Z-210620T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jefferson AL-
949 PM CDT Sat Jun 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT SUNDAY 
FOR JEFFERSON COUNTY...

At 949 PM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 2 and 4 inches of rain have 
fallen. Additional rainfall amounts of 1 to 3 inches are possible in 
the warned area. Flash flooding is already occurring.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Radar.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Birmingham, Hoover, Vestavia Hills, Bessemer, Homewood, Pelham, 
  Mountain Brook, Trussville, Helena, Hueytown, Gardendale, 
  Irondale, Leeds, Moody, Fairfield, Fultondale, Center Point, 
  Pleasant Grove, Clay and Pinson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3347 8667 3342 8672 3342 8675 3337 8678
      3336 8683 3333 8683 3333 8688 3325 8698
      3325 8707 3328 8707 3331 8716 3340 8725
      3359 8708 3382 8673 3377 8665 3377 8654
      3366 8653 3347 8660

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

87/Grantham

586 
WGUS54 KBMX 200431
FFWBMX
ALC073-200700-
/O.EXT.KBMX.FF.W.0031.000000T0000Z-210620T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Birmingham AL
1131 PM CDT Sat Jun 19 2021

The National Weather Service in Birmingham has extended the

* Flash Flood Warning for...
  Jefferson County in central Alabama...

* Until 200 AM CDT.

* At 1131 PM CDT, Emergency Management and Law Enforcement reported 
  thunderstorms producing heavy rain across the warned area. Between 
  3 and 4 inches of rain have fallen. Additional rainfall amounts of 
  1 to 2 inches are possible in the warned area. Flash flooding is 
  already occurring.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Emergency Management reported.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Birmingham, Hoover, Vestavia Hills, Bessemer, Homewood, Pelham, 
  Mountain Brook, Trussville, Helena, Hueytown, Gardendale, 
  Irondale, Leeds, Moody, Fairfield, Fultondale, Center Point, 
  Pleasant Grove, Clay and Pinson.

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 3347 8667 3342 8672 3342 8675 3337 8678
      3336 8683 3333 8683 3333 8688 3325 8698
      3325 8707 3328 8707 3331 8716 3340 8725
      3359 8708 3382 8673 3377 8665 3377 8654
      3366 8653 3347 8660

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

40/Sizemore

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 8:53 PM CDT	Areal Flood Advisory	BMX	Jefferson, Shelby	3 hr
Jun 19, 9:53 PM CDT	Flash Flood Warning	BMX	Cherokee	3 hr
Jun 19, 11:29 PM CDT	Special Weather Statement	BMX	Bullock, Macon, Pike	46 min
Jun 19, 11:53 PM CDT	Areal Flood Advisory	BMX	Blount	3 hr
Jun 20, 12:15 AM CDT	Special Weather Statement	BMX	Barbour, Russell	45 min
Jun 20, 1:05 AM CDT	Areal Flood Warning	BMX	Tuscaloosa	7 hr
Jun 20, 1:12 AM CDT	Areal Flood Warning	BMX	Cherokee	6 hr
Jun 20, 1:15 AM CDT	Areal Flood Advisory	BMX	Etowah	4 hr
Jun 20, 1:57 AM CDT	Areal Flood Advisory	BMX	Barbour	2 hr
Jun 20, 2:00 AM CDT	Flash Flood Warning	BMX	Jefferson	3 hr
Jun 20, 4:16 AM CDT	Areal Flood Warning	BMX	Cherokee	32 hr
Jun 20, 10:06 AM CDT	River Flood Warning	BMX	Greene, Hale, Marengo	5 days

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.