Alert archive / Alabama / Flash Flood Warnings in 2016

Flash Flood Warning 18, NWS Mobile, AL

April 1, 2016Baldwin County, Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at Apr 1, 2016, 8:44 AM CDT for Baldwin County, Mobile County, Alabama. It was in force for 2 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
Apr 1, 2016, 8:44 AM CDT (13:44 UTC)
Expired
Apr 1, 2016, 10:45 AM CDT
In force
2 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Baldwin County, AL, Mobile County, AL

The radar

The Mobile radar (KMOB), 24 km from the middle of the area, began a volume at 13:45 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 12:00Z, 1.7 hours before the alert went out and 172 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 2016-04-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1826 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 2016-04-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.1939587897117Sfc1 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
1826 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
467 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
152 m²/s²
Significant tornado parameter
1.9
Supercell composite
7.0

Open this sounding in Storm Lab

The text

As transmitted.

170 
WGUS54 KMOB 011344
FFWMOB
ALC003-097-011545-
/O.NEW.KMOB.FF.W.0018.160401T1344Z-160401T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
844 AM CDT FRI APR 1 2016

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN BALDWIN COUNTY IN SOUTHWESTERN ALABAMA...
  MOBILE COUNTY IN SOUTHWESTERN ALABAMA...

* UNTIL 1045 AM CDT

* AT 838 AM CDT...THUNDERSTORMS PRODUCING VERY HEAVY RAIN EXTENDED
  ALONG A LINE FROM JUST NORTHWEST OF THE MOBILE REGIONAL AIRPORT TO
  STOCKTON.  BETWEEN 1 AND 2 INCHES OF RAIN HAVE ALREADY FALLEN
  ACROSS MOBILE AND BALDWIN COUNTIES THIS MORNING.  AN ADDITIONAL 2
  INCHES WILL BE POSSIBLE THROUGH LATE MORNING AS ADDITIONAL
  THUNDERSTORMS MOVE TO THE WARNED AREA FROM SOUTHEAST MISSISSIPPI.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MOBILE...PRICHARD...SARALAND...BAY MINETTE...SPANISH FORT...SATSUMA...
  CHICKASAW...CREOLA...MIDTOWN MOBILE...DOWNTOWN MOBILE...TILLMANS
  CORNER...THEODORE...REGIONAL AIRPORT IN WEST MOBILE...GRAND BAY...I65
  AND AL 59...I65 AND I165...I10 AND I65...CHUNCHULA...I65 AND CR 47 AND
  I65 AND AL 287.

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 3047 8840 3097 8842 3112 8762 3096 8759
      3089 8762 3079 8789 3063 8791 3063 8792
      3075 8792 3065 8793 3072 8797 3074 8803
      3067 8802 3067 8803 3075 8804 3074 8805
      3066 8803 3055 8808

$$

BUTTS
1 follow-up statement
306 
WGUS74 KMOB 011556
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1056 AM CDT FRI APR 1 2016

ALC003-097-011602-
/O.EXP.KMOB.FF.W.0018.000000T0000Z-160401T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BALDWIN AL-MOBILE AL-
1056 AM CDT FRI APR 1 2016

...THE FLASH FLOOD WARNING EXPIRED AT 1045 AM CDT FOR NORTHWESTERN
BALDWIN AND MOBILE COUNTIES...

SHOWERS AND THUNDERSTORMS FROM CENTRAL MOBILE COUNTY INTO
NORTHWESTERN BALDWIN COUNTY ARE NO LONGER EXPECTED TO RESULT IN
FLASH FLOODING.  THEREFORE...THE FLASH FLOOD WARNING WAS ALLOWED TO
EXPIRE.

SHOWERS AND THUNDERSTORMS...SOME WITH LOCALLY HEAVY RAINFALL...WILL
CONTINUE AFFECTING THE REGION THROUGH THE AFTERNOON.  SOME PONDING
OF WATER IN LOW-LYING AND FLOOD PRONE AREAS MAY CONTINUE TO BE SEEN.

STAY TUNED FOR FURTHER UPDATES FROM YOUR NATIONAL WEATHER SERVICE IN
MOBILE.

LAT...LON 3047 8840 3097 8842 3112 8762 3096 8759
      3089 8762 3079 8789 3063 8791 3063 8792
      3075 8792 3065 8793 3072 8797 3074 8803
      3067 8802 3067 8803 3075 8804 3074 8805
      3066 8803 3055 8808

$$

BUTTS

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 7:28 PM CDTSpecial Weather StatementMOBWilcox32 min
Mar 31, 8:43 PM CDTAreal Flood AdvisoryMOBChoctaw32 min
Mar 31, 8:55 PM CDTSpecial Weather StatementMOBChoctaw65 min
Mar 31, 9:20 PM CDTSevere Thunderstorm WarningMOBChoctaw25 min
Apr 1, 12:05 AM CDTSpecial Weather StatementMOBChoctaw40 min
Apr 1, 12:39 AM CDTSpecial Weather StatementMOBChoctaw51 min
Apr 1, 12:56 AM CDTSpecial Weather StatementMOBChoctaw49 min
Apr 1, 1:39 AM CDTSpecial Weather StatementMOBWilcox51 min
Apr 1, 2:19 AM CDTSpecial Weather StatementMOBWilcox41 min
Apr 1, 2:32 AM CDTSevere Thunderstorm WarningMOBMonroe, Wilcox28 min
Apr 1, 3:24 AM CDTSpecial Weather StatementMOBConecuh, Monroe51 min
Apr 1, 3:53 AM CDTSpecial Weather StatementMOBConecuh52 min
Apr 1, 4:09 AM CDTSpecial Weather StatementMOBButler, Crenshaw51 min
Apr 1, 4:28 AM CDTSmall Craft AdvisoryMOB54 hr
Apr 1, 4:52 AM CDTSpecial Weather StatementMOBCrenshaw53 min
Apr 1, 5:41 AM CDTSevere Thunderstorm WarningMOBCovington49 min
Apr 1, 7:20 AM CDTAreal Flood AdvisoryMOBBaldwin, Mobile115 min
Apr 1, 7:44 AM CDTSpecial Weather StatementMOBBaldwin46 min
Apr 1, 8:27 AM CDTSpecial Weather StatementMOBEscambia48 min
Apr 1, 8:53 AM CDTSpecial Weather StatementMOBConecuh, Monroe67 min
Apr 1, 9:13 AM CDTSpecial Weather StatementMOBEscambia47 min
Apr 1, 9:24 AM CDTSpecial Weather StatementMOBCovington36 min
Apr 1, 9:36 AM CDTAreal Flood AdvisoryMOBEscambia114 min
Apr 1, 9:47 AM CDTSpecial Weather StatementMOBButler43 min
Apr 1, 10:05 AM CDTSpecial Marine WarningMOB55 min
Apr 1, 10:06 AM CDTRiver Flood WarningMOBDallas, Monroe, Wilcox3 days
Apr 1, 10:06 AM CDTRiver Flood WarningMOBClarke, Monroe, Wilcox5 days
Apr 1, 10:31 AM CDTAreal Flood AdvisoryMOBBaldwin, Mobile119 min
Apr 1, 10:43 AM CDTAreal Flood AdvisoryMOBConecuh, Covington3 hr
Apr 1, 11:33 AM CDTFlash Flood WarningMOBConecuh, Covington, Escambia3 hr
Apr 1, 12:50 PM CDTAreal Flood AdvisoryMOBBaldwin115 min
Apr 1, 12:56 PM CDTSpecial Marine WarningMOB64 min
Apr 1, 1:51 PM CDTSpecial Marine WarningMOB54 min
Apr 1, 1:54 PM CDTRiver Flood WarningMOBCovington3 days
Apr 1, 1:59 PM CDTRiver Flood WarningMOBCovington, Escambia55 hr
Apr 1, 2:09 PM CDTSpecial Marine WarningMOB51 min
Apr 1, 3:05 PM CDTSpecial Marine WarningMOB85 min
Apr 1, 4:05 PM CDTSpecial Marine WarningMOB25 min
Apr 1, 4:23 PM CDTAreal Flood AdvisoryMOBBaldwin, Covington, Escambia6 hr
Apr 1, 4:31 PM CDTSpecial Marine WarningMOB89 min
Apr 1, 5:41 PM CDTFlash Flood WarningMOBBaldwin, Mobile6 hr
Apr 1, 6:10 PM CDTSpecial Marine WarningMOB95 min
Apr 1, 6:22 PM CDTAreal Flood AdvisoryMOBBaldwin, Clarke, Mobile, Monroe, Washington6 hr
Apr 1, 6:33 PM CDTSpecial Weather StatementMOBBaldwin, Mobile42 min
Apr 1, 6:50 PM CDTAreal Flood AdvisoryMOBConecuh, Covington, Escambia3 hr
Apr 1, 6:59 PM CDTSpecial Marine WarningMOB61 min

Nearby

Flash Flood Warnings in Alabama, 2016Every flash flood warning in 2016

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.