Alert archive / Florida / Areal Flood Advisories in 2012

Areal Flood Advisory 2, NWS Miami, FL

February 10, 2012Palm Beach County, Florida

NWS Miami, FL issued this areal flood advisory at Feb 10, 2012, 11:44 AM EST for Palm Beach County, Florida. It was in force for 61 min.

The area

The counties it named.

The facts

Issued
Feb 10, 2012, 11:44 AM EST (16:44 UTC)
Expired
Feb 10, 2012, 12:45 PM EST
In force
61 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 115 km from the middle of the area, began a volume at 16:45 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

Miami, FL (KMFL), launched 12:00Z, 4.7 hours before the alert went out and 93 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, Miami, FL at 12:00Z on 2012-02-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 396 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, Miami, FL at 12:00Z on 2012-02-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 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
396 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
457 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.5

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 Miami, FL wrote its last area forecast discussion before this areal flood advisory went out at Feb 10, 9:53 AM EST, 1 hour 51 minutes earlier.

Area forecast discussion, Feb 10, 9:53 AM EST, 1 hour 51 minutes before
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Hazardous weather outlook, Feb 10, 4:41 AM EST, 7 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA
NATIONAL WEATHER SERVICE MIAMI FL
441 AM EST FRI FEB 10 2012

AMZ610-630-FLZ063-066>075-168-172>174-110045-
LAKE OKEECHOBEE-BISCAYNE BAY-GLADES-HENDRY-INLAND PALM BEACH-
METRO PALM BEACH-COASTAL COLLIER-INLAND COLLIER-INLAND BROWARD-
METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE-MAINLAND MONROE-
COASTAL PALM BEACH-COASTAL BROWARD-COASTAL MIAMI DADE-
FAR SOUTH MIAMI DADE-
441 AM EST FRI FEB 10 2012

...ISOLATED STRONG THUNDERSTORMS POSSIBLE LAKE OKEECHOBEE REGION...
...SLIGHT RISK OF RIP CURRENTS BOTH, WEST AND EAST COASTS...
...COLD TEMPERATURES AND LOW WIND CHILL VALUES SUNDAY THROUGH MONDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...TODAY AND TONIGHT

RIP CURRENTS: THERE IS A SLIGHT RISK OF RIP CURRENTS ALONG BOTH, THE
GULF COAST AND THE ATLANTIC BEACHES.

THUNDERSTORMS: ISOLATED THUNDERSTORMS ARE POSSIBLE ACROSS MOST OF
SOUTH FLORIDA TODAY. A FEW STORMS COULD BECOME STRONG ACROSS THE
LAKE OKEECHOBEE REGION, INCLUDING GLADES, HENDRY AND PALM BEACH
COUNTIES. THE MAIN THREAT WILL BE LOCALLY HEAVY RAIN, STRONG GUSTY
WINDS AND OCCASIONAL LIGHTNING STRIKES.

WINDS: WIND GUSTS TO 40 TO 50 MPH ARE POSSIBLE WITH THE STRONGEST
STORMS, ESPECIALLY ACROSS THE LAKE OKEECHOBEE REGION TODAY.

WATERSPOUTS: NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS COULD
LEAD TO THE DEVELOPMENT OF WATERSPOUTS ACROSS BISCAYNE BAY AND THE
ATLANTIC WATERS TODAY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A COLD FRONT WILL BE MOVING THROUGH SOUTH FLORIDA SATURDAY MORNING.
TEMPERATURES ARE EXPECTED TO DROP INTO THE MID TO UPPER 30S ACROSS
NORTHWESTERN INTERIOR SECTIONS TO THE UPPER 40S TO LOWER 50S ACROSS
THE EAST COAST METRO AREAS ON SATURDAY NIGHT AND SUNDAY NIGHT. WITH
THE WIND INCLUDED, THIS IS FORECAST TO PRODUCE WIND CHILL READINGS
IN THE UPPER 20S TO LOWER 30S ACROSS GLADES AND HENDRY COUNTIES,
MID 30S TO AROUND 40 ACROSS THE REST OF THE INTERIOR AND GULF
COAST, AND LOWER TO MID 40S TO LOWER 50S ACROSS THE EAST COAST
METRO AREAS LATE SATURDAY NIGHT THROUGH SUNDAY MORNING.

MARINE CONDITIONS ARE EXPECTED TO BECOME HAZARDOUS ACROSS ALL THE LOCAL
WATERS ON SATURDAY NIGHT INTO SUNDAY AS NORTHERLY WINDS INCREASE
BEHIND THE COLD FRONT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

FOR MORE INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN
MIAMI WEBSITE AT WWW.WEATHER.GOV/MIAMI.

The office that day

Everything else NWS Miami, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 10, 11:43 AM ESTAreal Flood AdvisoryMFLPalm Beach62 min
Feb 10, 2:56 PM ESTFire Weather WatchMFLBroward, Collier, Miami-Dade, Monroe, Palm Beach37 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.