Alert archive / Alabama / Flash Flood Warnings in 2020

Flash Flood Warning 7, NWS Mobile, AL

April 23, 2020Escambia County, Alabama

NWS Mobile, AL issued this flash flood warning at Apr 23, 2020, 8:30 AM CDT for Escambia County, Alabama. It was in force for 4 hr. 3 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
Apr 23, 2020, 8:30 AM CDT (13:30 UTC)
Expired
Apr 23, 2020, 12:30 PM CDT
In force
4 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Escambia County, AL

The radar

The Mobile radar (KMOB), 106 km from the middle of the area, began a volume at 13:33 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
Apr 23, 10:09 AM CDTFLASH FLOODAtmore, ALFLASH FLOODING OCCURRING IN ATMORE. ROADS BLOCKED OFF DUE TO THE FLOODING.
Apr 23, 10:15 AM CDTFLASH FLOOD4 Se Sardine, ALFLOODING FROM A POND ON UPPER CREEK ROAD IN FLOMATON. REPORT FROM SOCIAL MEDIA.
Apr 23, 10:45 AM CDTFLASH FLOODBrewton, ALFLASH FLOODING OCCURRING IN BREWTON. ROADS FLOODED.

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 12:00Z, 1.5 hours before the alert went out and 253 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 12:00Z on 2020-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2572 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2020-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 424 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
2572 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
498 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
424 m²/s²
0-3 km storm-relative helicity
449 m²/s²
Significant tornado parameter
7.7
Supercell composite
25.5

Open this sounding in Storm Lab

The text

As transmitted.

523 
WGUS54 KMOB 231330
FFWMOB
ALC053-231630-
/O.NEW.KMOB.FF.W.0007.200423T1330Z-200423T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
830 AM CDT Thu Apr 23 2020

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Escambia County in south central Alabama...

* Until 1130 AM CDT.

* At 829 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...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Atmore, Brewton, Flomaton, McCullough, East Brewton, Pollard, 
  Riverview, I65 And AL 113, I65 And AL 21, I65 And CR 1, Poarch 
  Creek Reservation, Hammac, Foshee, Osaka, Pineview, Welka, 
  Wallace, Wahl, Appleton and Stanley Crossroads.

LAT...LON 3118 8761 3125 8713 3122 8682 3100 8681
      3100 8762

FLASH FLOOD...RADAR INDICATED

$$

DRE
2 follow-up statements
862 
WGUS74 KMOB 231505
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
1005 AM CDT Thu Apr 23 2020

ALC053-231630-
/O.CON.KMOB.FF.W.0007.000000T0000Z-200423T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Escambia AL-
1005 AM CDT Thu Apr 23 2020

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 AM CDT THIS 
MORNING FOR ESCAMBIA COUNTY...

At 1001 AM CDT, Doppler radar indicated thunderstorms producing 
heavy rain across the warned area. Between 2 and 6 inches of rain 
have fallen over the past three hours, and 4.2 inches of rain was 
reported at Atmore.  The Brewton area is estimated to have received 
4 or more inches of rain.  Flash flooding is ongoing or expected to 
begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Doppler radar.

IMPACT...Flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other
         drainage and low lying areas.

Some locations that will experience flash flooding include...
  Atmore, Brewton, Flomaton, McCullough, East Brewton, Pollard, 
  Riverview, I65 And AL 113, I65 And AL 21, I65 And CR 1, Poarch 
  Creek Reservation, Hammac, Foshee, Osaka, Pineview, Welka, 
  Wallace, Wahl, Appleton and Stanley Crossroads.

LAT...LON 3118 8761 3125 8713 3122 8682 3100 8681
      3100 8762

FLASH FLOOD...RADAR INDICATED

$$

DRE
514 
WGUS54 KMOB 231622
FFWMOB
ALC053-231730-
/O.EXT.KMOB.FF.W.0007.000000T0000Z-200423T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
1122 AM CDT Thu Apr 23 2020

The National Weather Service in Mobile has extended the

* Flash Flood Warning for...
  Escambia County in south central Alabama...

* Until 1230 PM CDT.

* At 1121 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. 5 to 7 inches of rain have 
  fallen, with an additional 1 inch possible over the next hour. 
  Flash flooding is already occurring.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  IMPACT...Flooding of small creeks and streams, urban areas, 
           highways, streets and underpasses as well as other 
           drainage and low lying areas.

* Some locations that will experience flooding include...
  Atmore, Brewton, Flomaton, McCullough, East Brewton, Pollard,
  Riverview, I65 And CR 1, I65 And AL 113, I65 And AL 21 and Poarch
  Creek Reservation.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3118 8761 3125 8713 3122 8682 3100 8681
      3100 8762

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1 INCH IN 1 HOUR

$$

JLH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 23, 3:37 AM CDTSpecial Weather StatementMOBChoctaw53 min
Apr 23, 4:26 AM CDTSevere Thunderstorm WarningMOBChoctaw49 min
Apr 23, 4:55 AM CDTTornado WarningMOBChoctaw, Clarke50 min
Apr 23, 5:12 AM CDTSevere Thunderstorm WarningMOBChoctaw, Clarke, Washington, Wilcox48 min
Apr 23, 5:19 AM CDTTornado WarningMOBChoctaw, Washington12 min
Apr 23, 5:57 AM CDTSevere Thunderstorm WarningMOBButler, Clarke, Conecuh, Monroe, Wilcox48 min
Apr 23, 6:03 AM CDTSevere Thunderstorm WarningMOBMobile, Washington42 min
Apr 23, 6:11 AM CDTTornado WarningMOBMobile34 min
Apr 23, 6:41 AM CDTTornado WarningMOBBaldwin, Mobile49 min
Apr 23, 6:50 AM CDTSevere Thunderstorm WarningMOBBaldwin, Escambia, Mobile40 min
Apr 23, 7:10 AM CDTTornado WarningMOBBaldwin, Escambia39 min
Apr 23, 7:35 AM CDTSevere Thunderstorm WarningMOBEscambia55 min
Apr 23, 7:41 AM CDTSevere Thunderstorm WarningMOBMobile49 min
Apr 23, 7:59 AM CDTFlash Flood WarningMOBBaldwin, Mobile, Washington3 hr
Apr 23, 8:12 AM CDTSevere Thunderstorm WarningMOBConecuh, Covington, Crenshaw, Escambia63 min
Apr 23, 8:38 AM CDTTornado WarningMOBCovington34 min
Apr 23, 9:48 AM CDTCoastal Flood AdvisoryMOBBaldwin, Mobile9 hr
Apr 23, 10:27 AM CDTSevere Thunderstorm WarningMOBConecuh, Covington, Escambia43 min
Apr 23, 10:28 AM CDTFlash Flood WarningMOBConecuh, Covington, Escambia3 hr
Apr 23, 11:27 AM CDTSpecial Marine WarningMOB93 min
Apr 23, 11:59 AM CDTSpecial Marine WarningMOB46 min
Apr 23, 12:32 PM CDTAreal Flood WarningMOBEscambia6 hr
Apr 23, 12:51 PM CDTSpecial Marine WarningMOB114 min
Apr 23, 1:12 PM CDTSpecial Marine WarningMOB2 hr
Apr 23, 1:29 PM CDTSevere Thunderstorm WarningMOBBaldwin46 min
Apr 23, 1:32 PM CDTSpecial Marine WarningMOB88 min
Apr 23, 2:21 PM CDTSpecial Marine WarningMOB114 min
Apr 23, 3:36 PM CDTSevere Thunderstorm WarningMOBChoctaw39 min
Apr 23, 4:17 PM CDTSevere Thunderstorm WarningMOBChoctaw43 min
Apr 23, 4:26 PM CDTSevere Thunderstorm WarningMOBWashington22 min
Apr 23, 4:52 PM CDTSevere Thunderstorm WarningMOBWilcox38 min

Nearby

Flash Flood Warnings in Alabama, 2020Every flash flood warning in 2020

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.