Alert archive / Alabama / Flash Flood Warnings in 2021

Flash Flood Warning 60, NWS Mobile, AL

August 30, 2021George County, Greene County, Perry County, Mississippi; 4 counties in Alabama

NWS Mobile, AL issued this flash flood warning at Aug 30, 2021, 3:24 AM CDT for George County, Greene County, Perry County, Mississippi; 4 counties in Alabama. It was in force for 6 hr. 2 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
Aug 30, 2021, 3:24 AM CDT (08:24 UTC)
Expired
Aug 30, 2021, 9:20 AM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Baldwin County, AL, Clarke County, AL, Mobile County, AL, Washington County, AL, George County, MS, Greene County, MS, Perry County, MS

The radar

The Mobile radar (KMOB), 38 km from the middle of the area, began a volume at 08:26 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

TimeReportWhereRemark
Aug 30, 9:00 AM CDTFLASH FLOOD2 Se Basin, MSVIDEO OF FLASH FLOODING RELAYED VIA SOCIAL MEDIA. WATER COMPLETELY COVERING ELLIS HODGE ROAD. TIME ESTIMATED.
Aug 30, 9:00 AM CDTFLASH FLOOD4 Ne Rosinton, ALFLAT ROCK CREEK CUT THROUGH RIVER ROAD CREATING A WASHOUT 8 TO 10 FEET DEEP.

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

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 8.4 hours before the alert went out and 186 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-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 2021-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 25 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2021-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
25 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
679 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

027 
WGUS54 KMOB 300824
FFWMOB
ALC003-025-097-129-MSC039-041-111-301430-
/O.NEW.KMOB.FF.W.0060.210830T0824Z-210830T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
324 AM CDT Mon Aug 30 2021

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Baldwin County in southwestern Alabama...
  Southwestern Clarke County in southwestern Alabama...
  Mobile County in southwestern Alabama...
  Southern Washington County in southwestern Alabama...
  George County in southeastern Mississippi...
  Greene County in southeastern Mississippi...
  Southeastern Perry County in southeastern Mississippi...

* Until 930 AM CDT Monday.

* At 324 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across 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...
  Midtown Mobile, Downtown Mobile, Prichard, Daphne, Tillmans 
  Corner, Fairhope, Saraland, Gulf Shores, Bay Minette, Foley, 
  Theodore, Chickasaw, Satsuma, Orange Beach, Spanish Fort, Grand 
  Bay, Robertsdale, Citronelle, Lucedale and Bayou La Batre.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3143 8897 3145 8775 3134 8772 3136 8776
      3131 8778 3130 8771 3093 8761 3087 8763
      3080 8757 3032 8745 3032 8750 3031 8743
      3028 8753 3028 8755 3025 8742 3020 8748
      3016 8837 3074 8841 3073 8871

FLASH FLOOD...RADAR INDICATED

$$
2 follow-up statements
770 
WGUS74 KMOB 301157
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
657 AM CDT Mon Aug 30 2021

ALC003-025-097-129-MSC039-041-111-301430-
/O.CON.KMOB.FF.W.0060.000000T0000Z-210830T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Baldwin AL-Clarke AL-Mobile AL-Washington AL-George MS-Greene MS-
Perry MS-
657 AM CDT Mon Aug 30 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 AM CDT THIS 
MORNING FOR BALDWIN, SOUTHWESTERN CLARKE, MOBILE, SOUTHERN 
WASHINGTON, GEORGE, GREENE AND SOUTHEASTERN PERRY COUNTIES...

At 657 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across 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...
  Midtown Mobile, Downtown Mobile, Prichard, Daphne, Tillmans 
  Corner, Fairhope, Saraland, Gulf Shores, Bay Minette, Foley, 
  Theodore, Chickasaw, Satsuma, Orange Beach, Spanish Fort, Grand 
  Bay, Robertsdale, Citronelle, Lucedale and Bayou La Batre.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3143 8897 3145 8775 3134 8772 3136 8776
      3131 8778 3130 8771 3093 8761 3087 8763
      3080 8757 3032 8745 3032 8750 3031 8743
      3028 8753 3028 8755 3025 8742 3020 8748
      3016 8837 3074 8841 3073 8871

FLASH FLOOD...RADAR INDICATED

$$
235 
WGUS74 KMOB 301420
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
920 AM CDT Mon Aug 30 2021

ALC003-025-097-129-MSC039-041-111-301430-
/O.CAN.KMOB.FF.W.0060.000000T0000Z-210830T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Baldwin AL-Clarke AL-Mobile AL-Washington AL-George MS-Greene MS-
Perry MS-
920 AM CDT Mon Aug 30 2021

...FLASH FLOOD WARNING FOR BALDWIN, SOUTHWESTERN CLARKE, MOBILE, 
SOUTHERN WASHINGTON, GEORGE, GREENE AND SOUTHEASTERN PERRY COUNTIES 
HAS BEEN REPLACED WITH A FLOOD WARNING...

LAT...LON 3143 8897 3145 8775 3134 8772 3136 8776
      3131 8778 3130 8771 3093 8761 3087 8763
      3080 8757 3032 8745 3032 8750 3031 8743
      3028 8753 3028 8755 3025 8742 3020 8748
      3016 8837 3074 8841 3073 8871

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 7:07 PM CDTTornado WarningMOBGeorge25 min
Aug 29, 11:30 PM CDTFlash Flood WarningMOBStone6 hr
Aug 30, 12:29 AM CDTFlash Flood WarningMOBGeorge, Perry, Stone6 hr
Aug 30, 3:39 AM CDTTornado WarningMOBGeorge, Greene, Perry20 min
Aug 30, 6:05 AM CDTFlash Flood WarningMOBStone4 hr
Aug 30, 6:20 AM CDTFlash Flood WarningMOBGeorge, Greene, Perry, Stone5 hr
Aug 30, 9:20 AM CDTAreal Flood WarningMOBGeorge, Greene, Perry8 hr
Aug 30, 2:32 PM CDTTornado WarningMOBWayne21 min
Aug 30, 5:19 PM CDTAreal Flood WarningMOBGeorge14 hr
Aug 30, 6:28 PM CDTSpecial Weather StatementMOBGeorge47 min
Aug 29, 8:19 PM CDTRiver Flood WarningMOBEscambia49 hr
Aug 29, 8:21 PM CDTRiver Flood WarningMOBCovington, Escambia38 hr
Aug 29, 8:35 PM CDTRiver Flood WarningMOBBaldwin30 hr
Aug 29, 11:27 PM CDTSpecial Marine WarningMOB93 min
Aug 30, 12:13 AM CDTSpecial Marine WarningMOB47 min
Aug 30, 12:59 AM CDTSpecial Marine WarningMOB2 hr
Aug 30, 4:03 AM CDTSpecial Marine WarningMOB117 min
Aug 30, 6:42 AM CDTFlash Flood WarningMOBBaldwin, Escambia5 hr
Aug 30, 6:46 AM CDTSpecial Marine WarningMOB119 min
Aug 30, 8:29 AM CDTFlash Flood WarningMOBConecuh, Escambia, Monroe4 hr
Aug 30, 8:32 AM CDTFlash Flood WarningMOBEscambia4 hr
Aug 30, 8:40 AM CDTTornado WarningMOBConecuh, Escambia50 min
Aug 30, 9:00 AM CDTFlash Flood WarningMOBClarke, Conecuh, Escambia, Monroe, Wilcox4 hr
Aug 30, 9:12 AM CDTFlash Flood WarningMOBConecuh, Escambia4 hr
Aug 30, 10:26 AM CDTFlash Flood WarningMOBMobile6 hr
Aug 30, 10:51 AM CDTSpecial Marine WarningMOB54 min
Aug 30, 10:55 AM CDTTornado WarningMOBMobile, Washington25 min
Aug 30, 11:47 AM CDTFlash Flood WarningMOBClarke, Washington5 hr
Aug 30, 11:57 AM CDTFlash Flood WarningMOBBaldwin, Clarke, Mobile, Washington5 hr
Aug 30, 12:03 PM CDTFlash Flood WarningMOBEscambia75 min
Aug 30, 12:23 PM CDTTornado Warning Tornado observedMOBBaldwin, Mobile21 min
Aug 30, 12:30 PM CDTTornado Warning Tornado observedMOBBaldwin, Clarke, Mobile, Washington45 min
Aug 30, 1:08 PM CDTTornado Warning Tornado observedMOBClarke52 min
Aug 30, 1:39 PM CDTTornado Warning Tornado observedMOBClarke, Wilcox39 min
Aug 30, 3:57 PM CDTSpecial Marine WarningMOB48 min
Aug 30, 4:11 PM CDTCoastal Flood WarningMOBBaldwin, Mobile14 hr
Aug 30, 4:18 PM CDTSpecial Marine WarningMOB87 min
Aug 30, 4:20 PM CDTSpecial Marine WarningMOB85 min
Aug 30, 5:05 PM CDTSpecial Weather StatementMOBCovington55 min
Aug 30, 5:29 PM CDTSpecial Marine WarningMOB91 min
Aug 30, 6:46 PM CDTSpecial Marine WarningMOB89 min

Nearby

Flash Flood Warnings in Alabama, 2021Flash Flood Warnings in Mississippi, 2021Every 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.