Alert archive / Alabama / Flash Flood Warnings in 2016

Flash Flood Warning 12, NWS Mobile, AL

March 11, 2016Choctaw County, Alabama

NWS Mobile, AL issued this flash flood warning at Mar 11, 2016, 9:42 AM CST for Choctaw 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
Mar 11, 2016, 9:42 AM CST (15:42 UTC)
Expired
Mar 11, 2016, 3:45 PM CST
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Choctaw County, AL

The radar

The Mobile radar (KMOB), 148 km from the middle of the area, began a volume at 15:43 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
Mar 11, 10:13 AM CSTFLASH FLOOD2 E Gilbertown, ALWATER FLOWING OVER THE ROADWAY ON MOSLEY BRIDGE ROAD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 3.7 hours before the alert went out and 182 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, Birmingham, AL at 12:00Z on 2016-03-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2016-03-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -26 square meters per square second.19395878Sfc1 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
1377 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

609 
WGUS54 KMOB 111542
FFWMOB
ALC023-112145-
/O.NEW.KMOB.FF.W.0012.160311T1542Z-160311T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
942 AM CST FRI MAR 11 2016

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 345 PM CST FRIDAY

* AT 940 AM CST...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE WARNED
  AREA. ADDITIONAL FLASH FLOODING IS EXPECTED.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BUTLER...LISMAN...SILAS...PENNINGTON...GILBERTOWN...TOXEY AND
  NEEDHAM. 

ADDITIONAL RAINFALL AMOUNTS OF 3 TO 5 INCHES ARE POSSIBLE IN THE
WARNED AREA THROUGH EARLY AFTERNOON. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF NEEDED MOVE TO HIGHER GROUND NOW! ACT QUICKLY TO PROTECT YOUR
LIFE.

IF YOU ENCOUNTER FLOODED ROADS...TURN AROUND...DON'T DROWN! MOST FLOOD
DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 3231 8795 3228 8802 3218 8801 3209 8804
      3205 8812 3201 8811 3198 8806 3195 8808
      3195 8812 3193 8809 3193 8805 3191 8813
      3182 8818 3175 8814 3176 8810 3170 8809
      3170 8846 3191 8847 3230 8842 3231 8818

$$
1 follow-up statement
080 
WGUS74 KMOB 112110
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
310 PM CST FRI MAR 11 2016

ALC023-112116-
/O.CAN.KMOB.FF.W.0012.000000T0000Z-160311T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHOCTAW AL-
310 PM CST FRI MAR 11 2016

...THE FLASH FLOOD WARNING FOR CHOCTAW COUNTY IS CANCELLED...

...CHOCTAW COUNTY IS UNDER AN AREAL FLOOD WARNING UNTIL EARLY
SATURDAY AFTERNOON...

 THE FLOODING IN CHOCTAW COUNTY IS NOW MORE OF A GENERAL
INUNDATION TYPE OF FLOODING...WHICH MEANS A MORE WIDESPREAD FLOODING
WITH SLOWER RISES. PLEASE CONTINUE TO HEED ANY REMAINING ROAD
CLOSURES AND STAY AWAY FROM SMALL CREEKS AND LOW LYING AREAS. PLEASE
DO NOT ALSO FORGET THAT MAJOR RIVERS ARE STILL RISING!


LAT...LON 3231 8795 3228 8802 3218 8801 3209 8804
      3205 8812 3201 8811 3198 8806 3195 8808
      3195 8812 3193 8809 3193 8805 3191 8813
      3182 8818 3175 8814 3176 8810 3170 8809
      3170 8846 3191 8847 3230 8842 3231 8818

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 10, 7:36 PM CSTRiver Flood WarningMOBChoctaw, Clarke, Washington11 days
Mar 10, 7:36 PM CSTRiver Flood WarningMOBChoctaw, Clarke, Washington11 days
Mar 10, 8:19 PM CSTAreal Flood AdvisoryMOBChoctaw3 hr
Mar 10, 9:16 PM CSTFlash Flood WarningMOBChoctaw3 hr
Mar 10, 10:52 PM CSTAreal Flood WarningMOBChoctaw9 hr
Mar 11, 7:34 AM CSTAreal Flood WarningMOBChoctaw, Washington6 hr
Mar 11, 8:15 AM CSTSevere Thunderstorm WarningMOBMobile, Washington30 min
Mar 11, 8:42 AM CSTAreal Flood AdvisoryMOBMobile3 hr
Mar 11, 8:45 AM CSTSpecial Weather StatementMOBMobile60 min
Mar 11, 8:55 AM CSTSpecial Marine WarningMOB65 min
Mar 11, 9:20 AM CSTSpecial Marine WarningMOB55 min
Mar 11, 9:28 AM CSTFlash Flood WarningMOBMobile, Washington6 hr
Mar 11, 9:41 AM CSTSpecial Weather StatementMOBBaldwin, Mobile, Washington64 min
Mar 11, 9:59 AM CSTSpecial Marine WarningMOB61 min
Mar 11, 10:42 AM CSTAreal Flood AdvisoryMOBBaldwin3 hr
Mar 11, 10:45 AM CSTSpecial Weather StatementMOBBaldwin45 min
Mar 11, 10:50 AM CSTAreal Flood AdvisoryMOBClarke4 hr
Mar 11, 10:58 AM CSTSpecial Marine WarningMOB62 min
Mar 11, 11:04 AM CSTFlash Flood WarningMOBBaldwin, Mobile6 hr
Mar 11, 11:22 AM CSTFlash Flood WarningMOBClarke6 hr
Mar 11, 11:29 AM CSTSpecial Weather StatementMOBBaldwin61 min
Mar 11, 11:59 AM CSTSpecial Marine WarningMOB61 min
Mar 11, 12:16 PM CSTAreal Flood AdvisoryMOBBaldwin4 hr
Mar 11, 2:14 PM CSTAreal Flood WarningMOBChoctaw, Clarke, Washington24 hr
Mar 11, 3:54 PM CSTAreal Flood WarningMOBMobile12 hr

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.