Alert archive / Alabama / Flash Flood Warnings in 2016

Flash Flood Warning 36, NWS Mobile, AL

September 5, 2016Baldwin County, Alabama

NWS Mobile, AL issued this flash flood warning at Sep 5, 2016, 12:28 PM CDT for Baldwin County, Alabama. It was in force for 6 hr. 2 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
Sep 5, 2016, 12:28 PM CDT (17:28 UTC)
Expired
Sep 5, 2016, 6:30 PM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 56 km from the middle of the area, began a volume at 17:31 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
Sep 5, 12:44 PM CDTFLOOD2 E Palmetto Beach, ALFT MORGAN FIRE DEPARTMENT REPORTS 4 TO 6 INCHES OF WATER ACROSS HIGHWAY 180/FT MORGAN RD NEAR GASQUE AND AREAS TO THE WEST.
Sep 5, 1:53 PM CDTFLOOD3 W Gulf Shores, ALMULTIPLE REPORTS FROM GULF SHORES AND FORT MORGAN OF 4 TO 6 INCHES OF STANDING WATER ACROSS AREA ROADWAYS.

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, 5.5 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.

773 
WGUS54 KMOB 051728
FFWMOB
ALC003-052330-
/O.NEW.KMOB.FF.W.0036.160905T1728Z-160905T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1228 PM 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 630 PM CDT MONDAY

* AT 1225 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. 4 TO 6 INCHES OF RAIN HAVE
  FALLEN SO FAR OVER SOME AREAS OF THE FORT FORT PENINSULA. FLOODING
  IS EXPECTED TO CONTINUE.

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

ADDITIONAL RAINFALL AMOUNTS OF UP TO 4 INCHES ARE POSSIBLE IN THE
WARNED AREA AS THUNDERSTORMS CONTINUE TO MOVE ONSHORE OVER THE AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3022 8804 3033 8801 3038 8790 3040 8765
      3025 8763 3022 8778

$$
1 follow-up statement
213 
WGUS74 KMOB 052105
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
405 PM CDT MON SEP 5 2016

ALC003-052114-
/O.CAN.KMOB.FF.W.0036.000000T0000Z-160905T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BALDWIN AL-
405 PM CDT MON SEP 5 2016

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN BALDWIN COUNTY IS
CANCELLED...

THE HEAVY RAIN HAS ENDED. ADDITIONAL FLOODING IS NO LONGER EXPECTED
TO POSE A THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD
CLOSURES AND AVOID AREAS WHERE WATER OF UNKNOWN DEPTH COVERS THE
ROADWAYS.

LAT...LON 3022 8804 3033 8801 3038 8790 3040 8765
      3025 8763 3022 8778

$$

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, 9:35 AM CDTFlash Flood WarningMOBBaldwin3 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, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.