Alert archive / Florida / Flash Flood Watches in 2016

Flash Flood Watch 4, NWS Mobile, AL

March 26, 2016Baldwin County, Mobile County, Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this flash flood watch at Mar 26, 2016, 7:46 AM CDT for Baldwin County, Mobile County, Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Mar 26, 2016, 7:46 AM CDT (12:46 UTC)
Expired
Mar 26, 2016, 1:14 PM CDT
In force
5 hr
Issued by
NWS Mobile, AL
Flood severity
None

Counties Baldwin County, AL, Mobile County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL

The radar

The Mobile radar (KMOB), 82 km from the middle of the area, began a volume at 12:49 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, 0.8 hours before the alert went out and 227 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 2016-03-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2016-03-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 square meters per square second.1939587897Sfc1 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
1673 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

286 
WGUS64 KMOB 261246
FFAMOB

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE MOBILE AL
746 AM CDT SAT MAR 26 2016

...FLASH FLOOD WATCH NOW IN EFFECT FOR THE COASTAL COUNTIES THROUGH 4
PM CDT THIS AFTERNOON...

.THUNDERSTORMS HAVE INCREASED IN COVERAGE FROM THE SOUTHEAST LOUISIANA
COAST TO ACROSS THE MISSISSIPPI SOUND AND THE ALABAMA...NORTHWEST
FLORIDA COASTAL WATERS OVER THE PAST COUPLE HOURS. STORMS HAVE
DEVELOPED NORTHWARD ACROSS THE WATCH AREA AND HAVE A HISTORY OF
DEPOSITING LOCALLY HEAVY RAINS. ADDITIONAL HEAVY RAIN OVER THE
COASTAL WATERS IS ALSO LIFTING NORTHWARD INTO THE WATCH AREA. THE
WATCH AREA ALSO EXPERIENCED HEAVY RAINS BACK ON THURSDAY. THUS...SOIL
MOISTURE IS HIGH AND TODAYS HEAVY RAINFALL WILL LIKELY LEAD TO
FLOODING.

ALZ263>266-FLZ201>206-262100-
/O.NEW.KMOB.FF.A.0004.160326T1246Z-160326T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOBILE CENTRAL-BALDWIN CENTRAL-MOBILE COASTAL-BALDWIN COASTAL-
ESCAMBIA INLAND-ESCAMBIA COASTAL-SANTA ROSA INLAND-
SANTA ROSA COASTAL-OKALOOSA INLAND-OKALOOSA COASTAL-
INCLUDING THE CITIES OF...MOBILE...PRICHARD...THEODORE...DAPHNE...
FAIRHOPE...FOLEY...SPANISH FORT...BAYOU LA BATRE...
DAUPHIN ISLAND...GRAND BAY...GULF SHORES...CENTURY...MOLINO...
ENSLEY...PENSACOLA...JAY...MILTON...GULF BREEZE...CRESTVIEW...
DESTIN...EGLIN AFB...FORT WALTON BEACH...NICEVILLE...SEMINOLE...
VALPARAISO...WRIGHT
746 AM CDT SAT MAR 26 2016

...FLASH FLOOD WATCH IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WATCH FOR PORTIONS OF SOUTHWEST ALABAMA AND 
  NORTHWEST FLORIDA...INCLUDING THE FOLLOWING AREAS...IN 
  SOUTHWEST ALABAMA...BALDWIN CENTRAL...BALDWIN COASTAL...MOBILE 
  CENTRAL AND MOBILE COASTAL. IN NORTHWEST FLORIDA...ESCAMBIA 
  COASTAL...ESCAMBIA INLAND...OKALOOSA COASTAL...OKALOOSA 
  INLAND...SANTA ROSA COASTAL AND SANTA ROSA INLAND. 

* UNTIL 4 PM CDT THIS AFTERNOON

* RAINS OF 2 TO 4 INCHES FROM THURSDAY'S HEAVY RAIN EVENT HAS CAUSED
  SOIL MOISTURE LEVELS TO BE HIGH IN THE WATCH AREA. ADDITIONAL HEAVY
  RAINS OF 2 TO 3 INCHES...LOCALLY HIGHER IN SOME AREAS WILL LIKELY
  LEAD TO RUNOFF PROBLEMS AND AN INCREASED FLOODING THREAT THROUGH
  MID AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$
1 follow-up statement
483 
WGUS64 KMOB 261814
FFAMOB

FLOOD WATCH
NATIONAL WEATHER SERVICE MOBILE AL
114 PM CDT SAT MAR 26 2016

...FLASH FLOOD WATCH FOR TODAY HAS BEEN CANCELLED...

.THE WIDESPREAD HEAVY RAINFALL FROM EARLIER THIS MORNING HAS NOW
MOVED EAST OF THE WATCH AREA...AND ADDITIONAL WIDESPREAD HEAVY
RAINFALL IS NOT EXPECTED THIS AFTERNOON. ISOLATED TO SCATTERED
SHOWERS WILL CONTINUE...BUT THE FLASH FLOODING THREAT FOR TODAY HAS
DIMINISHED. MORE HEAVY RAINFALL WILL LIKELY DEVELOP LATE TONIGHT AND
INTO SUNDAY...AND ANOTHER FLASH FLOOD WATCH MAY BE REQUIRED FOR PARTS
OF THE REGION ON SUNDAY. 

ALZ263>266-FLZ201>206-261915-
/O.CAN.KMOB.FF.A.0004.000000T0000Z-160326T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOBILE CENTRAL-BALDWIN CENTRAL-MOBILE COASTAL-BALDWIN COASTAL-
ESCAMBIA INLAND-ESCAMBIA COASTAL-SANTA ROSA INLAND-
SANTA ROSA COASTAL-OKALOOSA INLAND-OKALOOSA COASTAL-
114 PM CDT SAT MAR 26 2016

...FLASH FLOOD WATCH IS CANCELLED...

THE FLASH FLOOD WATCH FOR PORTIONS OF SOUTHWEST ALABAMA AND
NORTHWEST FLORIDA HAS BEEN CANCELLED. WIDESPREAD HEAVY RAINFALL HAS
ENDED OVER THE WATCH AREA...AND ALTHOUGH THERE WILL BE SOME ISOLATED
TO SCATTERED SHOWERS THROUGH THIS EVENING...THE THREAT OF FLASH
FLOODING FOR TODAY HAS DIMINISHED. 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 26, 5:28 AM CDTSpecial Marine WarningMOB2 hr
Mar 26, 7:31 AM CDTSpecial Weather StatementMOBEscambia29 min
Mar 26, 7:41 AM CDTSpecial Marine WarningMOB2 hr
Mar 26, 8:26 AM CDTSpecial Weather StatementMOBConecuh, Escambia49 min
Mar 26, 9:50 AM CDTSpecial Marine WarningMOB25 min
Mar 26, 10:24 AM CDTSpecial Marine WarningMOB96 min
Mar 26, 12:03 PM CDTSpecial Marine WarningMOB87 min
Mar 26, 3:23 PM CDTSpecial Marine WarningMOB82 min
Mar 26, 4:43 PM CDTSpecial Marine WarningMOB77 min
Mar 26, 4:52 PM CDTSevere Thunderstorm WarningMOBBaldwin53 min
Mar 26, 5:58 PM CDTSpecial Marine WarningMOB92 min
Mar 25, 8:45 PM CDTRiver Flood WarningMOBOkaloosa5 days
Mar 26, 7:02 AM CDTSpecial Weather StatementMOBSanta Rosa28 min
Mar 26, 4:48 PM CDTSpecial Weather StatementMOBEscambia57 min
Mar 26, 5:35 PM CDTSevere Thunderstorm WarningMOBEscambia, Santa Rosa40 min

Nearby

Flash Flood Watches in Florida, 2016Flash Flood Watches in Alabama, 2016Every flash flood watch 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.