Alert archive / Florida / Flash Flood Warnings in 2017

Flash Flood Warning 74, NWS Mobile, AL

October 7, 2017Escambia County, Florida; Baldwin County, Alabama

NWS Mobile, AL issued this flash flood warning at Oct 7, 2017, 9:52 PM CDT for Escambia County, Florida; Baldwin County, Alabama. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Oct 7, 2017, 9:52 PM CDT (02:52 UTC)
Expired
Oct 8, 2017, 3:45 AM 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), 41 km from the middle of the area, began a volume at 02:53 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.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 2.9 hours before the alert went out and 181 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 2017-10-08Temperature 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 00:00Z on 2017-10-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -81 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
601 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-81 m²/s²
0-3 km storm-relative helicity
-6 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

107 
WGUS54 KMOB 080252
FFWMOB
ALC003-FLC033-080845-
/O.NEW.KMOB.FF.W.0074.171008T0252Z-171008T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
952 PM CDT SAT OCT 7 2017

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Baldwin County in southwestern Alabama...
  Western Escambia County in northwestern Florida...

* Until 345 AM CDT

* At 951 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Three to four inches of rain 
  have already fallen. Flash flooding is already occurring on the 
  Fort Morgan Penisula...and is expected to expand inland as the 
  heavy rains move inland.

* Some locations that will experience flooding include...
  Daphne, Fairhope, Gulf Shores, Foley, Orange Beach, Spanish Fort,
  Robertsdale, Point Clear, Loxley, Lillian, Magnolia Springs,
  Stapleton, Bon Secour, Summerdale, Silverhill, Perdido Beach and
  Elberta.

Additional rainfall amounts of three are possible in the warned area.

LAT...LON 3020 8800 3036 8800 3081 8798 3082 8795
      3083 8794 3088 8749 3029 8737

$$
2 follow-up statements
872 
WGUS74 KMOB 080356
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
1056 PM CDT SAT OCT 7 2017

ALC003-FLC033-080845-
/O.CON.KMOB.FF.W.0074.000000T0000Z-171008T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Baldwin AL-Escambia FL-
1056 PM CDT SAT OCT 7 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM CDT FOR
BALDWIN AND WESTERN ESCAMBIA COUNTIES...

At 1053 PM CDT, Doppler radar indicated bands of heavy rain 
streaming north across the warned area. Four to five inches of rain 
have already fallen. Flash flooding is occurring on the Fort Morgan 
peninsula and is expected to begin shortly if not already occurring.

Some locations that will experience flooding include...
Daphne, Fairhope, Foley, Orange Beach, Spanish Fort, Robertsdale,
Point Clear, Loxley, Lillian, Magnolia Springs, Stapleton, Bon
Secour, Summerdale, Silverhill, Perdido Beach and Elberta.

Additional rainfall amounts of two to four are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3022 8800 3081 8798 3083 8794 3088 8749
      3030 8737 3026 8760

$$
357 
WGUS74 KMOB 080737
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
237 AM CDT SUN OCT 8 2017

ALC003-FLC033-080845-
/O.CON.KMOB.FF.W.0074.000000T0000Z-171008T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Baldwin AL-Escambia FL-
237 AM CDT SUN OCT 8 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM CDT FOR
BALDWIN AND WESTERN ESCAMBIA COUNTIES...

At 235 AM CDT, Doppler radar indicated rain across the warned area, 
and is decreasing in rainfall rates. Up to five inches of rain have 
already fallen. Flash flooding is expected, if not already occurring.

Some locations that will experience flooding include...
Daphne, Fairhope, Foley, Orange Beach, Spanish Fort, Robertsdale,
Point Clear, Loxley, Lillian, Magnolia Springs, Stapleton, Bon
Secour, Summerdale, Silverhill, Perdido Beach and Elberta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3022 8800 3081 8798 3083 8794 3088 8749
      3030 8737 3026 8760

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 7, 9:13 PM CDTTornado WarningMOBEscambia32 min
Oct 7, 11:01 PM CDTFlash Flood WarningMOBEscambia6 hr
Oct 7, 11:46 PM CDTFlash Flood WarningMOBEscambia, Santa Rosa6 hr
Oct 8, 12:58 AM CDTTornado WarningMOBOkaloosa32 min
Oct 8, 1:18 AM CDTTornado WarningMOBOkaloosa27 min
Oct 8, 2:06 AM CDTFlash Flood WarningMOBOkaloosa, Santa Rosa7 hr
Oct 8, 3:41 AM CDTAreal Flood WarningMOBEscambia6 hr
Oct 8, 4:58 AM CDTAreal Flood WarningMOBEscambia6 hr
Oct 8, 5:37 AM CDTAreal Flood WarningMOBEscambia, Santa Rosa6 hr
Oct 8, 10:06 AM CDTRiver Flood WarningMOBOkaloosa45 hr
Oct 8, 10:14 AM CDTRiver Flood WarningMOBOkaloosa, Santa Rosa63 hr
Oct 8, 10:20 AM CDTHigh Surf AdvisoryMOBEscambia, Okaloosa, Santa Rosa21 hr
Oct 8, 11:09 AM CDTAreal Flood WarningMOBOkaloosa, Santa Rosa6 hr
Oct 7, 7:23 PM CDTSpecial Marine WarningMOB67 min
Oct 7, 7:28 PM CDTTornado WarningMOBBaldwin, Mobile, Washington47 min
Oct 7, 7:28 PM CDTTornado WarningMOBBaldwin, Mobile32 min
Oct 7, 7:33 PM CDTSpecial Marine WarningMOB57 min
Oct 7, 8:11 PM CDTTornado WarningMOBWashington20 min
Oct 7, 8:21 PM CDTSpecial Marine WarningMOB54 min
Oct 7, 9:18 PM CDTSpecial Marine WarningMOB57 min
Oct 7, 9:27 PM CDTTornado WarningMOBBaldwin48 min
Oct 7, 9:43 PM CDTTornado WarningMOBBaldwin32 min
Oct 7, 10:39 PM CDTSpecial Marine WarningMOB36 min
Oct 8, 1:31 AM CDTFlash Flood WarningMOBChoctaw, Clarke, Conecuh, Monroe, Washington, Wilcox6 hr
Oct 8, 2:53 AM CDTFlash Flood WarningMOBButler, Conecuh, Covington, Monroe, Wilcox6 hr
Oct 8, 3:51 AM CDTAreal Flood WarningMOBMobile6 hr
Oct 8, 4:46 AM CDTFlash Flood WarningMOBButler, Wilcox4 hr
Oct 8, 6:15 AM CDTFlash Flood WarningMOBButler, Covington, Crenshaw3 hr
Oct 8, 7:20 AM CDTAreal Flood WarningMOBChoctaw, Clarke, Conecuh, Monroe, Washington, Wilcox6 hr
Oct 8, 8:13 AM CDTSmall Craft AdvisoryMOB17 hr
Oct 8, 10:19 AM CDTRiver Flood WarningMOBMobile11 hr

Nearby

Flash Flood Warnings in Florida, 2017Flash Flood Warnings in Alabama, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.