Alert archive / Florida / Areal Flood Advisories in 2012

Areal Flood Advisory 8, NWS Mobile, AL

March 3, 2012Escambia County, Okaloosa County, Santa Rosa County, Florida

NWS Mobile, AL issued this areal flood advisory at Mar 3, 2012, 9:15 AM CST for Escambia County, Okaloosa County, Santa Rosa County, Florida. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Mar 3, 2012, 9:15 AM CST (15:15 UTC)
Expired
Mar 3, 2012, 12:00 PM CST
In force
3 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon

Counties Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 102 km from the middle of the area, began a volume at 15:15 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 3.3 hours before the alert went out and 259 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, Tallahassee Rgnl, FL at 12:00Z on 2012-03-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 499 joules per kilogram.LCLEL10008507005003002001001 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, Tallahassee Rgnl, FL at 12:00Z on 2012-03-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 257 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
499 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
472 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
257 m²/s²
0-3 km storm-relative helicity
283 m²/s²
Significant tornado parameter
0.9
Supercell composite
4.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Mobile, AL wrote its last area forecast discussion before this areal flood advisory went out at Mar 2, 5:32 PM CST, 15 hours 43 minutes earlier.

Area forecast discussion, Mar 2, 5:32 PM CST, 15 hours 43 minutes before
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Hazardous weather outlook, Mar 2, 4:19 PM CST, 16 hours 56 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MOBILE AL
419 PM CST FRI MAR 2 2012

ALZ051>064-FLZ001>006-MSZ067-075-076-078-079-032230-
CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-
ESCAMBIA-COVINGTON-UPPER MOBILE-UPPER BALDWIN-LOWER MOBILE-
LOWER BALDWIN-INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-WAYNE-PERRY-
GREENE-STONE-GEORGE-
419 PM CST FRI MAR 2 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
ALABAMA...SOUTHWEST ALABAMA...NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS THE REGION THROUGH THIS
EVENING. A FEW STORMS MAY BECOME SEVERE WITH LARGE HAIL...DAMAGING
WINDS...AND ISOLATED TORNADOES. THUNDERSTORMS WILL BECOME MORE
NUMEROUS LATE TONIGHT INTO EARLY SATURDAY MORNING AS A COLD FRONT
ADVANCES ACROSS THE REGION. DAMAGING WINDS...LARGE HAIL AND A FEW
TORNADOES WILL BE POSSIBLE OVERNIGHT. STORMS WILL ALSO BE CAPABLE OF
PRODUCING LOCALLY HEAVY RAINFALL AND LOCALIZED FLOODING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THE SEVERE THREAT WILL END SATURDAY MORNING AS THE COLD FRONT MOVES
THROUGH. OTHERWISE...NO OTHER HAZARDOUS WEATHER IS EXPECTED.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF SKYWARN SEVERE STORM SPOTTER NETWORKS WILL LIKELY BE
REQUESTED THROUGH EARLY SATURDAY MORNING.

GMZ630-650-655-670-675-032230-
MOBILE BAY-
COASTAL WATERS FROM PENSACOLA FL TO PASCAGOULA MS OUT 20 NM-
COASTAL WATERS FROM DESTIN TO PENSACOLA FL OUT 20 NM-
WATERS FROM PENSACOLA FL TO PASCAGOULA MS FROM 20 TO 60 NM-
WATERS FROM DESTIN TO PENSACOLA FL FROM 20 TO 60 NM-
419 PM CST FRI MAR 2 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE COASTAL
WATERS OF ALABAMA AND NORTHWEST FLORIDA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A STRONG COLD FRONT WILL MOVE ACROSS THE MARINE AREA LATE
TONIGHT...BRINGING AN INCREASING CHANCE OF THUNDERSTORMS. INCREASE
IN WIND AND SEAS ARE LIKELY IN THE VICINITY OF THESE STORMS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A SMALL CRAFT ADVISORY IS IN EFFECT NOON SATURDAY THROUGH NOON SUNDAY
FOR STRONG OFFSHORE WINDS BEHIND THE FRONT. SEAS AS HIGH AS 7 TO 9
FEET ARE EXPECTED OVERNIGHT SATURDAY INTO SUNDAY.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 2, 7:47 PM CSTTornado WarningMOBChoctaw26 min
Mar 3, 12:01 AM CSTAreal Flood AdvisoryMOBChoctaw, Clarke, Washington4 hr
Mar 3, 6:26 AM CSTSpecial Marine WarningMOB64 min
Mar 3, 7:22 AM CSTSpecial Marine WarningMOB38 min
Mar 3, 12:46 PM CSTGale WarningMOB20 hr
Mar 3, 12:46 PM CSTSmall Craft AdvisoryMOB20 hr
Mar 3, 2:21 PM CSTFire Weather WatchMOBButler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more17 hr

Nearby

Areal Flood Advisories in Florida, 2012Every areal flood advisory in 2012

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.