Alert archive / Florida / Flash Flood Warnings in 2021

Flash Flood Warning 80, NWS Mobile, AL

September 15, 2021Escambia County, Florida; Baldwin County, Alabama

NWS Mobile, AL issued this flash flood warning at Sep 15, 2021, 1:46 PM CDT for Escambia County, Florida; Baldwin County, Alabama. It was in force for 6 hr. 4 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
Sep 15, 2021, 1:46 PM CDT (18:46 UTC)
Expired
Sep 15, 2021, 7:45 PM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Baldwin County, AL, Escambia County, FL

The radar

The Mobile radar (KMOB), 85 km from the middle of the area, began a volume at 18:48 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
Sep 15, 2:45 PM CDTFLASH FLOOD1 W Lillian, ALFAST MOVING WATER OVER HIGHWAY 98 IN LILLIAN IS WASHING CARS OFF THE ROAD. A RESCUE HAD TO BE PERFORMED AT THE LILLIAN POST OFFICE DUE TO A PERSON BEING STUCK IN THEIR VEHICLE DUE TO FLOOD WATERS. COUNTY ROAD 99 AT PEARSON BRANCH BRIDGE IS ALSO CLOSED DUE TO F
Sep 15, 3:30 PM CDTFLASH FLOOD3 Wsw Myrtle Grove, FLSOCIAL MEDIA PICTURES OF STREETS FLOODED IN THE SHANGRI-LA NEIGHBORHOOD OFF OF HIGHWAY 98. TIME ESTIMATED.
Sep 15, 3:35 PM CDTFLASH FLOODPensacola, FLSEVERAL ROADS IN DOWNTOWN PENSACOLA ARE IMPASSABLE.
Sep 15, 3:40 PM CDTFLASH FLOOD1 Nne Myrtle Grove, FLSOCIAL MEDIA PICTURES OF A FLOODING PARKING LOT WITH WATER UP TO THE TOP OF TIRES.

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, 6.8 hours before the alert went out and 221 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 2021-09-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 84 joules per kilogram.LCLLFCEL10008507005003002001001 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 2021-09-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 square meters per square second.1939Sfc1 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
84 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
695 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
285 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

885 
WGUS54 KMOB 151846
FFWMOB
ALC003-FLC033-160045-
/O.NEW.KMOB.FF.W.0080.210915T1846Z-210916T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
146 PM CDT Wed Sep 15 2021

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Southeastern Baldwin County in southwestern Alabama...
  South Central Escambia County in northwestern Florida...

* Until 745 PM CDT.

* At 146 PM CDT, Doppler radar indicated bands of showers and 
  thunderstorms producing very heavy rain across the warned area. 
  Between 3 and 5 inches of rain with isolated higher totals have 
  fallen across much of southern Escambia county and southeastern 
  Baldwin county. Additional showers and storms capable of producing 
  torrential rainfall will continue to move into the warned area 
  through this afternoon. 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...
  Pensacola, Ferry Pass, Brent, West Pensacola, Ensley, Warrington, 
  Goulding, Lillian, Myrtle Grove, Perdido Beach, Millview, Ramsey 
  Beach, Bellview, Avondale, Beach Haven, Pleasant Grove, Paradise 
  Beach, Perdido Heights, Pine Forest and Brownsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3026 8755 3031 8753 3032 8753 3036 8754
      3043 8753 3051 8745 3060 8740 3055 8722
      3055 8713 3041 8717 3032 8727

FLASH FLOOD...RADAR INDICATED

$$

21/CLL
1 follow-up statement
696 
WGUS74 KMOB 151951
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
251 PM CDT Wed Sep 15 2021

ALC003-FLC033-160045-
/O.CON.KMOB.FF.W.0080.000000T0000Z-210916T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Baldwin AL-Escambia FL-
251 PM CDT Wed Sep 15 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM CDT THIS 
EVENING FOR SOUTHEASTERN BALDWIN AND SOUTH CENTRAL ESCAMBIA 
COUNTIES...

At 251 PM CDT, Doppler radar indicated bands of very heavy rain 
moving across the warned area. Between 4 and 6 inches of rain with 
isolated higher totals have already fallen across much of southern 
Escambia county and southeastern Baldwin county. At 246 PM CDT, 
Baldwin county emergency management officials reported significant 
flash flooding on Highway 98 in Lillian with cars being washed away.

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...
  Pensacola, Ferry Pass, Brent, West Pensacola, Ensley, Warrington, 
  Goulding, Lillian, Myrtle Grove, Perdido Beach, Millview, Ramsey 
  Beach, Bellview, Avondale, Beach Haven, Pleasant Grove, Paradise 
  Beach, Perdido Heights, Pine Forest and Brownsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3026 8755 3031 8753 3032 8753 3036 8754
      3043 8753 3051 8745 3060 8740 3055 8722
      3055 8713 3041 8717 3032 8727

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

$$

21/CLL

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 15, 8:58 AM CDTAreal Flood AdvisoryMOBEscambia4 hr
Sep 15, 10:43 AM CDTRip Current StatementMOBEscambia, Okaloosa, Santa Rosa64 hr
Sep 15, 1:16 PM CDTAreal Flood AdvisoryMOBEscambia, Okaloosa, Santa Rosa4 hr
Sep 15, 2:16 PM CDTSpecial Weather StatementMOBEscambia44 min
Sep 15, 3:12 PM CDTRiver Flood WarningMOBOkaloosa44 hr
Sep 15, 3:15 PM CDTRiver Flood WarningMOBOkaloosa, Santa Rosa19 hr
Sep 15, 3:17 PM CDTRiver Flood WarningMOBEscambia29 hr
Sep 15, 4:00 PM CDTSpecial Weather StatementMOBOkaloosa45 min
Sep 15, 4:33 PM CDTAreal Flood WarningMOBEscambia9 hr
Sep 15, 4:46 PM CDTSpecial Weather StatementMOBOkaloosa44 min
Sep 15, 5:21 PM CDTAreal Flood AdvisoryMOBOkaloosa, Santa Rosa114 min
Sep 14, 7:17 PM CDTSpecial Marine WarningMOB28 min
Sep 14, 8:12 PM CDTRiver Flood WarningMOBBaldwin38 hr
Sep 15, 4:21 AM CDTSpecial Marine WarningMOB39 min
Sep 15, 8:33 AM CDTSpecial Marine WarningMOB87 min
Sep 15, 10:11 AM CDTFlash Flood WarningMOBMobile6 hr
Sep 15, 11:00 AM CDTSpecial Marine WarningMOB90 min
Sep 15, 11:16 AM CDTSpecial Weather StatementMOBMobile44 min
Sep 15, 12:30 PM CDTFlash Flood WarningMOBBaldwin6 hr
Sep 15, 2:03 PM CDTSpecial Marine WarningMOB87 min
Sep 15, 3:20 PM CDTSpecial Marine WarningMOB85 min
Sep 15, 3:21 PM CDTRiver Flood WarningMOBBaldwin6 hr
Sep 15, 4:48 PM CDTSpecial Marine WarningMOB57 min

Nearby

Flash Flood Warnings in Florida, 2021Flash Flood Warnings in Alabama, 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.