Alert archive / Alabama / Flash Flood Warnings in 2016

Flash Flood Warning 35, NWS Mobile, AL

September 5, 2016Baldwin County, Alabama

NWS Mobile, AL issued this flash flood warning at Sep 5, 2016, 9:35 AM CDT for Baldwin County, Alabama. It was in force for 3 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
Sep 5, 2016, 9:35 AM CDT (14:35 UTC)
Expired
Sep 5, 2016, 12:30 PM CDT
In force
3 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 54 km from the middle of the area, began a volume at 14:37 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, 2.6 hours before the alert went out and 176 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 2016-09-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1407 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 2016-09-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 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
1407 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
659 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
-2 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

691 
WGUS54 KMOB 051435
FFWMOB
ALC003-051730-
/O.NEW.KMOB.FF.W.0035.160905T1435Z-160905T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
935 AM CDT MON SEP 5 2016

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 1230 PM CDT

* AT 930 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ALONG A LINE FROM WEEKS BAY, SOUTHEAST TOWARD GASQUE,
  AND EXTENDING INTO THE GULF OF MEXICO FOR MORE THAN 20 MILES.
  DOPPLER RADAR AND OBSERVATIONAL NETWORKS INDICATED BETWEEN 3 AND 4
  INCHES OF RAIN HAS FALLEN OVER THE PAST 3 HOURS, WITH 1.5 TO 2
  INCHES FALLING SINCE 8 AM.  WITH HEAVY RAIN EXPECTED TO CONTINUE
  OVER THE SAME AREA FOR THE NEXT SEVERAL HOURS, FLASH FLOODING IS
  EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  GULF SHORES...FOLEY...MAGNOLIA SPRINGS...BON SECOUR...
  SUMMERDALE AND FORT MORGAN.

ADDITIONAL RAINFALL AMOUNTS OF MORE THAN 2 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.

&&

LAT...LON 3022 8804 3029 8799 3026 8788 3029 8778
      3040 8792 3046 8792 3050 8768 3023 8761
      3022 8783

$$

BUTTS
1 follow-up statement
880 
WGUS74 KMOB 051614
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1114 AM CDT MON SEP 5 2016

ALC003-051730-
/O.CON.KMOB.FF.W.0035.000000T0000Z-160905T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BALDWIN AL-
1114 AM CDT MON SEP 5 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT FOR
SOUTHWESTERN BALDWIN COUNTY...

AT 1113 AM CDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
THUNDERSTORMS PRODUCING HEAVY RAIN OVER THE WARNED AREA. THREE TO
FOUR INCHES OF RAIN HAVE FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN
SHORTLY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
GULF SHORES...FOLEY...MAGNOLIA SPRINGS...BON SECOUR...
SUMMERDALE AND FORT MORGAN.

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO 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.

&&

LAT...LON 3022 8804 3029 8799 3026 8788 3029 8778
      3040 8792 3046 8792 3050 8768 3023 8761
      3022 8783

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 5, 7:50 AM CDTAreal Flood AdvisoryMOBBaldwin3 hr
Sep 5, 10:30 AM CDTSpecial Marine WarningMOB60 min
Sep 5, 11:17 AM CDTSpecial Marine WarningMOB58 min
Sep 5, 11:54 AM CDTSpecial Marine WarningMOB66 min
Sep 5, 12:28 PM CDTFlash Flood WarningMOBBaldwin6 hr
Sep 5, 1:38 PM CDTSpecial Marine WarningMOB67 min
Sep 5, 1:46 PM CDTSpecial Marine WarningMOB29 min
Sep 5, 1:50 PM CDTSpecial Weather StatementMOBBaldwin25 min
Sep 5, 1:56 PM CDTSpecial Weather StatementMOBMobile49 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.