Alert archive / Mississippi / Flash Flood Warnings in 2017

Flash Flood Warning 27, NWS Mobile, AL

June 20, 2017George County, Stone County, Mississippi; Baldwin County, Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at Jun 20, 2017, 10:16 PM CDT for George County, Stone County, Mississippi; Baldwin County, Mobile County, Alabama. 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
Jun 20, 2017, 10:16 PM CDT (03:16 UTC)
Expired
Jun 21, 2017, 4:15 AM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Baldwin County, AL, Mobile County, AL, George County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 8 km from the middle of the area, began a volume at 03:19 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
Jun 21, 12:18 AM CDTFLASH FLOOD1 E Gulf Shores, ALWATER PARTIALLY 3-6 INCHES UP ON THE TIRES OF CARS IN THE PARKING LOT OF THE CASTAWAYS CONDOMINIUM COMPLEX. VIDEO FROM 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 00:00Z, 3.3 hours before the alert went out and 153 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 2017-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 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 00:00Z on 2017-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 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
18 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
541 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
-21 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

506 
WGUS54 KMOB 210316
FFWMOB
ALC003-097-MSC039-131-210915-
/O.NEW.KMOB.FF.W.0027.170621T0316Z-170621T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
1016 PM CDT TUE JUN 20 2017

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Mobile County in southwestern Alabama...
  Baldwin County in southwestern Alabama...
  George County in southeastern Mississippi...
  Stone County in southeastern Mississippi...

* Until 415 AM CDT Wednesday

* At 1014 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to two inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Midtown Mobile, Downtown Mobile, Prichard, Daphne, Tillmans Corner,
  Fairhope, Saraland, Gulf Shores, Bay Minette, Foley, Theodore,
  Chickasaw, Satsuma, Orange Beach, Spanish Fort, Grand Bay, Wiggins,
  Robertsdale, Citronelle and Lucedale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3021 8838 3074 8841 3073 8888 3068 8889
      3065 8934 3091 8932 3091 8884 3100 8883
      3100 8843 3111 8843 3117 8799 3114 8787
      3122 8786 3124 8762 3087 8763 3072 8749
      3034 8742 3028 8753 3031 8740 3026 8739

$$
1 follow-up statement
072 
WGUS74 KMOB 210750
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
250 AM CDT WED JUN 21 2017

ALC003-097-MSC039-131-210915-
/O.CON.KMOB.FF.W.0027.000000T0000Z-170621T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mobile AL-Baldwin AL-George MS-Stone MS-
250 AM CDT WED JUN 21 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 AM CDT FOR
MOBILE...BALDWIN...GEORGE AND STONE COUNTIES...

At 243 AM CDT, thunderstorms producing heavy rainfall continue to 
move across the warned area. Doppler radar estimates show widespread 
rainfall amounts between 2 and 4 inches have fallen since mid-
evening Tuesday. An additional 1 to 2 inches may be seen in spots 
through sunrise. Flash flooding is expected to begin shortly.

Some locations that will experience flooding include...
Midtown Mobile, Downtown Mobile, Prichard, Daphne, Tillmans Corner,
Fairhope, Saraland, Gulf Shores, Bay Minette, Foley, Theodore,
Chickasaw, Satsuma, Orange Beach, Spanish Fort, Grand Bay, Wiggins,
Robertsdale, Citronelle and Lucedale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Additional statements will be issued as conditions warrant.

&&

LAT...LON 3021 8838 3074 8841 3073 8888 3068 8889
      3065 8934 3091 8932 3091 8884 3100 8883
      3100 8843 3111 8843 3117 8799 3114 8787
      3122 8786 3124 8762 3087 8763 3072 8749
      3034 8742 3028 8753 3031 8740 3026 8739

$$

Butts

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 4:15 AM CDTFlash Flood WarningMOBGeorge, Stone12 hr
Jun 21, 9:01 AM CDTTornado WarningMOBStone37 min
Jun 21, 9:29 AM CDTRiver Flood WarningMOBPerry5 days
Jun 21, 12:35 PM CDTAreal Flood WarningMOBGeorge, Greene, Perry, Stone, Wayne24 hr
Jun 21, 3:37 PM CDTSpecial Weather StatementMOBStone38 min
Jun 21, 3:46 PM CDTFlash Flood WarningMOBGeorge, Greene, Perry, Stone, Wayne6 hr
Jun 21, 4:03 PM CDTTornado WarningMOBGreene17 min
Jun 21, 5:51 PM CDTFlash Flood WarningMOBGreene, Wayne6 hr
Jun 20, 8:12 PM CDTSpecial Marine WarningMOB2 hr
Jun 20, 8:19 PM CDTCoastal Flood WarningMOBBaldwin, Mobile50 hr
Jun 20, 8:23 PM CDTAreal Flood AdvisoryMOBBaldwin, Mobile3 hr
Jun 20, 10:07 PM CDTSpecial Marine WarningMOB113 min
Jun 20, 11:44 PM CDTSpecial Marine WarningMOB2 hr
Jun 21, 1:43 AM CDTSpecial Marine WarningMOB2 hr
Jun 21, 3:12 AM CDTSpecial Marine WarningMOB2 hr
Jun 21, 3:47 AM CDTSpecial Marine WarningMOB118 min
Jun 21, 5:44 AM CDTSpecial Marine WarningMOB2 hr
Jun 21, 8:38 AM CDTRiver Flood WarningMOBEscambia48 hr
Jun 21, 8:38 AM CDTRiver Flood WarningMOBEscambia61 hr
Jun 21, 8:38 AM CDTRiver Flood WarningMOBEscambia67 hr
Jun 21, 8:38 AM CDTRiver Flood WarningMOBEscambia12 days
Jun 21, 8:38 AM CDTRiver Flood WarningMOBCovington, Escambia3 days
Jun 21, 10:14 AM CDTAreal Flood AdvisoryMOBBaldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 4 more6 hr
Jun 21, 11:06 AM CDTFlash Flood WarningMOBButler, Conecuh, Covington, Escambia6 hr
Jun 21, 12:05 PM CDTFlash Flood WarningMOBBaldwin, Clarke, Conecuh, Escambia, Monroe, Washington6 hr
Jun 21, 2:29 PM CDTTornado WarningMOBBaldwin46 min
Jun 21, 2:44 PM CDTTornado WarningMOBEscambia30 min
Jun 21, 2:46 PM CDTTornado WarningMOBBaldwin59 min
Jun 21, 2:56 PM CDTSpecial Weather StatementMOBMobile34 min
Jun 21, 2:59 PM CDTSpecial Marine WarningMOB2 hr
Jun 21, 3:10 PM CDTTornado WarningMOBBaldwin25 min
Jun 21, 3:53 PM CDTTornado WarningMOBBaldwin52 min
Jun 21, 3:57 PM CDTSpecial Marine WarningMOB2 hr
Jun 21, 4:02 PM CDTRiver Flood WarningMOBMobile3 days
Jun 21, 4:17 PM CDTTornado WarningMOBEscambia43 min
Jun 21, 4:28 PM CDTSpecial Marine WarningMOB92 min
Jun 21, 4:52 PM CDTSevere Thunderstorm WarningMOBMobile38 min
Jun 21, 5:04 PM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile86 min
Jun 21, 5:42 PM CDTSpecial Marine WarningMOB63 min
Jun 21, 5:48 PM CDTSevere Thunderstorm WarningMOBBaldwin44 min
Jun 21, 5:51 PM CDTSpecial Marine WarningMOB114 min
Jun 21, 6:10 PM CDTSevere Thunderstorm WarningMOBBaldwin26 min
Jun 21, 6:43 PM CDTSpecial Marine WarningMOB2 hr
Jun 21, 6:45 PM CDTTornado WarningMOBCovington45 min

Nearby

Flash Flood Warnings in Mississippi, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.