Alert archive / Alabama / Flash Flood Warnings in 2021

Flash Flood Warning 43, NWS Mobile, AL

July 15, 2021Wilcox County, Alabama

NWS Mobile, AL issued this flash flood warning at Jul 15, 2021, 8:36 PM CDT for Wilcox 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: Jul 15, 2021, 8:36 PM CDT (01:36 UTC)
Expired: Jul 16, 2021, 2:45 AM CDT
In force: 6 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

County Wilcox County, AL

The radar

The Birmingham radar (KBMX), 138 km from the middle of the area, began a volume at 01:38 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 00:00Z, 1.6 hours before the alert went out and 138 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: 1139 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 1445 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 0 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

308 
WGUS54 KMOB 160136
FFWMOB
ALC131-160745-
/O.NEW.KMOB.FF.W.0043.210716T0136Z-210716T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
836 PM CDT Thu Jul 15 2021

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Southeastern Wilcox County in south central Alabama...

* Until 245 AM CDT Friday.

* At 836 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 inches of rain 
  have fallen. The expected rainfall rate is 2.5 to 3.5 inches in 1 
  hour. 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...
  Darlington, Rosebud, Neenah and Estelle.

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 3199 8721 3191 8719 3194 8707 3197 8702
      3202 8704

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...2.5-3.5 INCHES IN 1 HOUR

$$

JMM

2 follow-up statements

760 
WGUS74 KMOB 160347
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
1047 PM CDT Thu Jul 15 2021

ALC131-160745-
/O.CON.KMOB.FF.W.0043.000000T0000Z-210716T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wilcox AL-
1047 PM CDT Thu Jul 15 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 AM CDT FRIDAY FOR 
SOUTHEASTERN WILCOX COUNTY...

At 1047 PM CDT, Doppler radar continues to indicate light to 
moderate rain is still falling over the warned area. Radar estimates 
just over six inches of rain has fallen so far, most of which fell 
in under an hour and a half. It is estimated quite a bit of runoff 
is still occurring and for that reason the warning will remain in 
effect.

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...
  Darlington, Rosebud, Neenah and Estelle.

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 3199 8721 3191 8719 3194 8707 3197 8702
      3202 8704

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...2.5-3.5 INCHES IN 1 HOUR

$$

JMM

802 
WGUS74 KMOB 160739
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
239 AM CDT Fri Jul 16 2021

ALC131-160749-
/O.EXP.KMOB.FF.W.0043.000000T0000Z-210716T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wilcox AL-
239 AM CDT Fri Jul 16 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 245 AM CDT EARLY THIS MORNING 
FOR SOUTHEASTERN WILCOX COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3199 8721 3191 8719 3194 8707 3197 8702
      3202 8704

$$

21/CLL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 7:12 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Monroe	48 min
Jul 15, 7:19 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Monroe, Wilcox	41 min
Jul 15, 7:27 PM CDT	Areal Flood Advisory	MOB	Conecuh, Escambia, Monroe	3 hr
Jul 15, 8:09 PM CDT	Special Weather Statement	MOB	Clarke, Wilcox	66 min
Jul 15, 8:21 PM CDT	Areal Flood Advisory	MOB	Wilcox	3 hr
Jul 15, 10:24 PM CDT	Areal Flood Advisory	MOB	Choctaw	3 hr
Jul 15, 11:26 PM CDT	Areal Flood Advisory	MOB	Choctaw, Washington	3 hr
Jul 16, 10:17 AM CDT	Areal Flood Advisory	MOB	Baldwin	4 hr
Jul 16, 10:54 AM CDT	Flash Flood Warning	MOB	Baldwin	6 hr
Jul 16, 12:01 PM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Jul 16, 12:23 PM CDT	Flash Flood Warning	MOB	Baldwin	3 hr
Jul 16, 1:41 PM CDT	Special Marine Warning	MOB		64 min
Jul 16, 3:04 PM CDT	Areal Flood Advisory	MOB	Clarke, Wilcox	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.