Alert archive / Alabama / Flash Flood Warnings in 2017

Flash Flood Warning 69, NWS Mobile, AL

August 30, 2017Baldwin County, Alabama; Escambia County, Florida

NWS Mobile, AL issued this flash flood warning at Aug 30, 2017, 7:41 AM CDT for Baldwin County, Alabama; Escambia County, Florida. It was in force for 3 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
Aug 30, 2017, 7:41 AM CDT (12:41 UTC)
Expired
Aug 30, 2017, 10:45 AM CDT
In force
3 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), 73 km from the middle of the area, began a volume at 12:42 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, 8:05 AM CDTFLASH FLOODOrange Beach, ALMULTIPLE ROAD CLOSURES DUE TO FLASH FLOODING IN ORANGE BEACH VIA SOCIAL MEDIA.
Aug 30, 8:50 AM CDTFLASH FLOODElberta, ALREPORT OF WATER OVER FRANK RD BETWEEN CR 95 AND CR87. REPORT VIA SOCIAL MEDIA.
Aug 30, 8:50 AM CDTFLASH FLOODFoley, ALREPORT OF WATER OVER THE ROAD AT THE INTERSECTION OF CR65 AND CR12. WATER OVER THE ROAD AT CR16 AND WEST NALL. WATER OVER THE ROAD AT CR49 AND BEASLEY RD. REPORTS VIA SOCIAL MEDIA.
Aug 30, 8:50 AM CDTFLASH FLOODLillian, ALREPORT OF WATER OVER THE ROAD AT THE INTERSECTION OF CR91 AND GRAFTON RD.ANOTHER REPORT OF WATER OVER CR93 BETWEEN SUNSET DR AND FAIRCLOTH RD. REPORTS VIA SOCIAL MEDIA.

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, 0.7 hours before the alert went out and 208 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 2017-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1853 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 2017-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 270 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
1853 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
550 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
270 m²/s²
0-3 km storm-relative helicity
310 m²/s²
Significant tornado parameter
2.2
Supercell composite
13.7

Open this sounding in Storm Lab

The text

As transmitted.

470 
WGUS54 KMOB 301241
FFWMOB
ALC003-FLC033-301545-
/O.NEW.KMOB.FF.W.0069.170830T1241Z-170830T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
741 AM CDT WED AUG 30 2017

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 1045 AM CDT

* At 740 AM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to three inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Gulf Shores, Foley, Orange Beach, Lillian, Bon Secour, Perdido
  Beach and Elberta.

Additional rainfall amounts of 2 to 4 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 3056 8740 3029 8739 3022 8777 3038 8776

$$
2 follow-up statements
419 
WGUS74 KMOB 301441
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
941 AM CDT WED AUG 30 2017

ALC003-FLC033-301545-
/O.CON.KMOB.FF.W.0069.000000T0000Z-170830T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Baldwin AL-Escambia FL-
941 AM CDT WED AUG 30 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 AM CDT FOR
SOUTHEASTERN BALDWIN AND SOUTH CENTRAL ESCAMBIA COUNTIES...

At 935 AM CDT, weather observation networks indicate between 4 and 6 
inches of rain have fallen across southern Baldwin County and the 
Perdido Bay area since early this morning. Copious amounts of rain 
have resulted in the closure of several roads around Gulf Shores 
this morning. Doppler radar shows thunderstorms continuing over the 
region, with an additional 1.5 inches of rain possible through 1030 
am along Alabama Highway 59 between Foley and the coast. This will 
likely result in additional ponding of water on area roadways and 
other low spots.

Some locations that will experience flooding include...
Gulf Shores, Foley, Orange Beach, Lillian, Bon Secour, Perdido Beach
and Elberta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

Additional statements will be issued as conditions warrant.

&&

LAT...LON 3056 8740 3029 8739 3022 8777 3038 8776

$$

Butts
550 
WGUS74 KMOB 301546
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
1046 AM CDT WED AUG 30 2017

ALC003-FLC033-301555-
/O.EXP.KMOB.FF.W.0069.000000T0000Z-170830T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Baldwin AL-Escambia FL-
1046 AM CDT WED AUG 30 2017

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN BALDWIN AND SOUTH CENTRAL
ESCAMBIA COUNTIES HAS EXPIRED...

The heaviest rainfall has ended across southern Baldwin and adjacent 
areas of Escambia County Florida. Please continue to heed any 
remaining road closures.

Additional statements will be issued as conditions warrant.

LAT...LON 3056 8740 3029 8739 3022 8777 3038 8776

$$

Butts

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 7:32 PM CDTFlash Flood WarningMOBMobile4 hr
Aug 29, 8:01 PM CDTRiver Flood WarningMOBBaldwin41 hr
Aug 29, 8:03 PM CDTRiver Flood WarningMOBBaldwin63 hr
Aug 29, 8:07 PM CDTRiver Flood WarningMOBBaldwin3 days
Aug 30, 1:36 AM CDTSpecial Marine WarningMOB54 min
Aug 30, 1:59 AM CDTSpecial Marine WarningMOB91 min
Aug 30, 2:31 AM CDTSpecial Marine WarningMOB59 min
Aug 30, 2:41 AM CDTSpecial Marine WarningMOB64 min
Aug 30, 2:52 AM CDTAreal Flood AdvisoryMOBMobile3 hr
Aug 30, 3:28 AM CDTSpecial Marine WarningMOB92 min
Aug 30, 3:42 AM CDTSpecial Weather StatementMOBMobile48 min
Aug 30, 3:44 AM CDTSpecial Marine WarningMOB2 hr
Aug 30, 4:07 AM CDTSpecial Weather StatementMOBBaldwin38 min
Aug 30, 4:14 AM CDTSpecial Weather StatementMOBBaldwin46 min
Aug 30, 4:15 AM CDTWind AdvisoryMOBBaldwin, Mobile38 hr
Aug 30, 4:18 AM CDTSevere Thunderstorm WarningMOBBaldwin42 min
Aug 30, 4:21 AM CDTTornado WarningMOBBaldwin24 min
Aug 30, 4:59 AM CDTSpecial Marine WarningMOB2 hr
Aug 30, 5:06 AM CDTAreal Flood AdvisoryMOBBaldwin3 hr
Aug 30, 5:31 AM CDTAreal Flood AdvisoryMOBBaldwin3 hr
Aug 30, 5:38 AM CDTSpecial Marine WarningMOB82 min
Aug 30, 6:35 AM CDTAreal Flood AdvisoryMOBBaldwin3 hr
Aug 30, 6:55 AM CDTSpecial Marine WarningMOB2 hr
Aug 30, 7:07 AM CDTCoastal Flood AdvisoryMOBBaldwin, Mobile35 hr
Aug 30, 7:07 AM CDTHigh Surf AdvisoryMOBBaldwin, Mobile35 hr
Aug 30, 7:23 AM CDTAreal Flood AdvisoryMOBMobile3 hr
Aug 30, 7:32 AM CDTFlash Flood WarningMOBMobile3 hr
Aug 30, 8:30 AM CDTAreal Flood AdvisoryMOBBaldwin3 hr
Aug 30, 8:51 AM CDTSpecial Marine WarningMOB114 min
Aug 30, 12:33 PM CDTSevere Thunderstorm WarningMOBMobile42 min
Aug 30, 12:45 PM CDTSpecial Marine WarningMOB90 min
Aug 30, 12:52 PM CDTRiver Flood WarningMOBEscambia63 hr
Aug 30, 12:54 PM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile66 min
Aug 30, 12:59 PM CDTTornado WarningMOBWashington22 min
Aug 30, 1:06 PM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile, Washington39 min
Aug 30, 1:17 PM CDTRiver Flood WarningMOBCovington, Escambia48 hr
Aug 30, 1:30 PM CDTRiver Flood WarningMOBMobile42 hr
Aug 30, 1:46 PM CDTSpecial Weather StatementMOBWashington44 min
Aug 30, 1:59 PM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile46 min
Aug 30, 3:01 PM CDTSpecial Weather StatementMOBMobile29 min
Aug 30, 3:12 PM CDTSpecial Weather StatementMOBBaldwin48 min
Aug 30, 3:17 PM CDTSpecial Marine WarningMOB58 min
Aug 30, 3:28 PM CDTSpecial Weather StatementMOBMonroe47 min
Aug 30, 3:35 PM CDTSpecial Marine WarningMOB85 min
Aug 30, 3:56 PM CDTSpecial Weather StatementMOBMonroe64 min
Aug 30, 4:14 PM CDTSpecial Marine WarningMOB31 min
Aug 30, 4:20 PM CDTTornado WarningMOBBaldwin25 min
Aug 30, 4:39 PM CDTSpecial Weather StatementMOBCovington66 min
Aug 30, 4:53 PM CDTSpecial Marine WarningMOB97 min
Aug 30, 4:58 PM CDTSpecial Weather StatementMOBCrenshaw47 min
Aug 30, 5:10 PM CDTSpecial Weather StatementMOBButler50 min
Aug 30, 5:15 PM CDTTornado WarningMOBCrenshaw45 min
Aug 30, 5:45 PM CDTSpecial Weather StatementMOBEscambia45 min
Aug 30, 6:51 PM CDTTornado WarningMOBWashington39 min
Aug 29, 8:12 PM CDTRiver Flood WarningMOBOkaloosa3 days
Aug 30, 5:49 AM CDTSpecial Weather StatementMOBEscambia41 min
Aug 30, 6:36 AM CDTSpecial Weather StatementMOBSanta Rosa39 min
Aug 30, 6:59 AM CDTSpecial Weather StatementMOBEscambia46 min
Aug 30, 7:07 AM CDTFlash Flood WarningMOBEscambia3 hr
Aug 30, 7:36 AM CDTSpecial Weather StatementMOBSanta Rosa39 min
Aug 30, 7:54 AM CDTFlash Flood WarningMOBSanta Rosa3 hr
Aug 30, 9:55 AM CDTFlash Flood WarningMOBOkaloosa, Santa Rosa3 hr
Aug 30, 10:08 AM CDTFlash Flood WarningMOBEscambia, Santa Rosa112 min
Aug 30, 11:02 AM CDTAreal Flood AdvisoryMOBSanta Rosa3 hr
Aug 30, 11:27 AM CDTRiver Flood WarningMOBOkaloosa, Santa Rosa3 days
Aug 30, 4:11 PM CDTSpecial Weather StatementMOBEscambia49 min

Nearby

Flash Flood Warnings in Alabama, 2017Flash Flood Warnings in Florida, 2017Every flash flood warning in 2017

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.