Alert archive / Florida / Flash Flood Warnings in 2021

Flash Flood Warning 56, NWS Mobile, AL

August 29, 2021Escambia County, Florida

NWS Mobile, AL issued this flash flood warning at Aug 29, 2021, 4:28 PM CDT for Escambia County, Florida. It was in force for 6 hr. 1 report 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 29, 2021, 4:28 PM CDT (21:28 UTC)
Expired
Aug 29, 2021, 10:30 PM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Escambia County, FL

What was reported inside it

TimeReportWhereRemark
Aug 29, 4:41 PM CDTFLASH FLOOD1 Sw Bellview, FLIMPASSABLE ROADWAYS IN THE AREA OF BLUE ANGEL PARKWAY AND CERNY ROADS.

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, 9.5 hours before the alert went out and 222 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 2021-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 12:00Z on 2021-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -55 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3256 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-55 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.3

Open this sounding in Storm Lab

The text

As transmitted.

835 
WGUS54 KMOB 292128
FFWMOB
FLC033-300330-
/O.NEW.KMOB.FF.W.0056.210829T2128Z-210830T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
428 PM CDT Sun Aug 29 2021

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  South Central Escambia County in northwestern Florida...

* Until 1030 PM CDT Sunday.

* At 428 PM 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...
  West Pensacola, Warrington, Myrtle Grove, Ramsey Beach, Millview, 
  Bellview, Avondale, Beach Haven, Pleasant Grove and Beulah.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3049 8744 3049 8743 3050 8743 3050 8744
      3051 8745 3054 8744 3056 8737 3034 8722
      3032 8734 3042 8742 3042 8741 3042 8740
      3044 8740 3045 8739 3045 8741 3047 8743

FLASH FLOOD...RADAR INDICATED

$$
2 follow-up statements
101 
WGUS74 KMOB 300028
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
728 PM CDT Sun Aug 29 2021

FLC033-300330-
/O.CON.KMOB.FF.W.0056.000000T0000Z-210830T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Escambia FL-
728 PM CDT Sun Aug 29 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT THIS 
EVENING FOR SOUTH CENTRAL ESCAMBIA COUNTY...

At 728 PM 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...
  West Pensacola, Warrington, Myrtle Grove, Ramsey Beach, Millview, 
  Bellview, Avondale, Beach Haven, Pleasant Grove and Beulah.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3049 8744 3049 8743 3050 8743 3050 8744
      3051 8745 3054 8744 3056 8737 3034 8722
      3032 8734 3042 8742 3042 8741 3042 8740
      3044 8740 3045 8739 3045 8741 3047 8743

FLASH FLOOD...RADAR INDICATED

$$
184 
WGUS74 KMOB 300338
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
1038 PM CDT Sun Aug 29 2021

FLC033-300348-
/O.EXP.KMOB.FF.W.0056.000000T0000Z-210830T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Escambia FL-
1038 PM CDT Sun Aug 29 2021

...FLASH FLOOD WARNING HAS EXPIRED FOR SOUTH CENTRAL ESCAMBIA 
COUNTY...

The heavy rain has ended and the warning has been allowed to expire. 
Please continue to heed remaining road closures.

A Flash Flood Watch remains in effect until 1200 PM CDT Tuesday for 
Portions of Alabama. Portions of northwest Florida. Portions of 
southeast Mississippi.

LAT...LON 3049 8744 3049 8743 3050 8743 3050 8744
      3051 8745 3054 8744 3056 8737 3034 8722
      3032 8734 3042 8742 3042 8741 3042 8740
      3044 8740 3045 8739 3045 8741 3047 8743

$$

DRE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 9:51 PM CDTSevere Thunderstorm WarningMOBEscambia39 min
Aug 29, 12:53 AM CDTSpecial Weather StatementMOBSanta Rosa52 min
Aug 29, 1:27 AM CDTSpecial Weather StatementMOBEscambia48 min
Aug 29, 1:30 AM CDTWind AdvisoryMOBEscambia, Okaloosa, Santa Rosa57 hr
Aug 29, 8:41 AM CDTTornado WarningMOBEscambia36 min
Aug 29, 9:18 AM CDTAreal Flood AdvisoryMOBEscambia3 hr
Aug 29, 10:03 AM CDTSpecial Weather StatementMOBEscambia, Okaloosa, Santa Rosa87 min
Aug 29, 10:06 AM CDTFlash Flood WarningMOBEscambia6 hr
Aug 29, 10:14 AM CDTRiver Flood WarningMOBEscambia5 days
Aug 29, 10:35 AM CDTAreal Flood AdvisoryMOBEscambia3 hr
Aug 29, 11:11 AM CDTFlash Flood WarningMOBEscambia6 hr
Aug 29, 1:46 PM CDTSpecial Weather StatementMOBEscambia, Okaloosa, Santa Rosa89 min
Aug 29, 3:45 PM CDTTornado WarningMOBEscambia45 min
Aug 29, 5:25 PM CDTFlash Flood WarningMOBEscambia, Santa Rosa6 hr

Nearby

Flash Flood Warnings in Florida, 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.