Alert archive / Florida / Coastal Flood Statements in 2012

Coastal Flood Statement 3, NWS Key West, FL

October 17, 2012Monroe County, Florida

NWS Key West, FL issued this coastal flood statement at Oct 17, 2012, 4:24 AM EDT for Monroe County, Florida. It took effect at Oct 17, 2012, 8:00 AM EDT. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued: Oct 17, 2012, 4:24 AM EDT (08:24 UTC)
In effect from: Oct 17, 2012, 8:00 AM EDT
Expired: Oct 18, 2012, 5:00 AM EDT
In force: 21 hr
Issued by: NWS Key West, FL

County Monroe County, FL

The radar

The Miami radar (KAMX), 51 km from the middle of the area, began a volume at 08:24 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 00:00Z, 8.4 hours before the alert went out and 69 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1891 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 767 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: -15 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

172 
WHUS42 KKEY 170824
CFWKEY

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE KEY WEST FL
424 AM EDT WED OCT 17 2012

FLZ076>078-180900-
/O.NEW.KKEY.CF.S.0003.121017T1200Z-121018T0900Z/
MONROE UPPER KEYS-MONROE MIDDLE KEYS-MONROE LOWER KEYS-
424 AM EDT WED OCT 17 2012

...MINOR COASTAL FLOODING AT HIGH TIDES THROUGH TONIGHT...

* COASTAL FLOODING...ASTRONOMICAL HIGH TIDES COMBINED WITH ABOVE
  NORMAL WATER LEVELS WILL RESULT IN MINIMAL COASTAL FLOODING OF LOW
  LYING AREAS IN THE FLORIDA KEYS AROUND THE TIME OF HIGH TIDE TODAY
  AND TONIGHT. WATER LEVELS SHOULD PEAK AT ABOUT 2.1 FEET ABOVE MEAN
  SEA LEVEL...WITH THE HIGHEST WATER VALUES ANTICIPATED IN THE LOWER
  KEYS DURING THE LATE EVENING HIGH TIDE.

* TIMING...AT KEY WEST...THE HIGHER HIGH TIDE WILL OCCUR AT 1139 PM
  TONIGHT. AT VACA CUT...THE HIGHER HIGH TIDE WILL OCCUR AT 321 AM
  EARLY THURSDAY MORNING. AT WHALE HARBOR CHANNEL...HIGH TIDES WILL
  OCCUR AT 1055 AM THIS MORNING AND 1106 PM TONIGHT.

* IMPACTS...THE PRIMARY HAZARD WILL BE MINOR STREET FLOODING OF A FEW
  INCHES IN DEPTH ON THE LOWEST ELEVATION STREETS...MAINLY IN THE
  LOWER KEYS. NO SIGNIFICANT COASTAL FLOODING IS EXPECTED. IN
  ADDITION...MAXIMUM TIDAL CURRENT SPEEDS WILL APPROACH 3 KNOTS IN
  SOME CHANNELS BETWEEN TIMES OF HIGH AND LOW TIDE. A FEW OF THE
  CHANNELS WITH THE HIGHEST CURRENT SPEED INCLUDE MOSER
  CHANNEL...BAHIA HONDA CHANNEL...AND THE KEY WEST SHIPPING CHANNEL
  NEAR FORT ZACHARY TAYLOR STATE PARK.

PLEASE REPORT OBSERVED TIDAL FLOODING TO YOUR FLORIDA KEYS NATIONAL
WEATHER SERVICE OFFICE AT 305-295-1316 EXTENSION 3.

ADDITIONAL COASTAL FLOOD STATEMENTS WILL BE ISSUED AS NEEDED.

$$

JACOBSON

Nearby

Coastal Flood Statements in Florida, 2012 Every coastal flood statement 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.