Alert archive / Florida / Coastal Flood Statements in 2011

Coastal Flood Statement 3, NWS Key West, FL

November 10, 2011Monroe County, Florida

NWS Key West, FL issued this coastal flood statement at Nov 10, 2011, 4:21 AM EST for Monroe County, Florida. It took effect at Nov 10, 2011, 6:00 PM EST. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Nov 10, 2011, 4:21 AM EST (09:21 UTC)
In effect from: Nov 10, 2011, 6:00 PM EST
Expired: Nov 10, 2011, 11:00 PM EST
In force: 5 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 09:25 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, 9.4 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: 21 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1163 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 35 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.

385 
WHUS42 KKEY 100921
CFWKEY

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE KEY WEST FL
421 AM EST THU NOV 10 2011

FLZ076>078-110400-
/O.NEW.KKEY.CF.S.0003.111110T2300Z-111111T0400Z/
MONROE UPPER KEYS-MONROE MIDDLE KEYS-MONROE LOWER KEYS-
421 AM EST THU NOV 10 2011

...MINOR COASTAL FLOODING POSSIBLE AT HIGH TIDE THIS EVENING...

THE COMBINATION OF ASTRONOMICAL HIGH TIDES ASSOCIATED WITH THE FULL
MOON...AND ABOVE NORMAL WATER LEVELS OFTEN OBSERVED IN THE FLORIDA
KEYS DURING THE FALL MONTHS...WILL RESULT IN MINOR COASTAL FLOODING
OF LOW LYING AREAS IN THE FLORIDA KEYS AROUND THE TIME OF HIGH TIDE
THIS EVENING. MINOR STREET FLOODING OF A FEW INCHES DEPTH IS EXPECTED
OVER THE LOWEST ELEVATION STREETS IN THE FLORIDA KEYS. HOWEVER...NO
SIGNIFICANT FLOODING IS EXPECTED.

WATER LEVELS DURING THE HIGH TIDE THIS MORNING WILL BE SEVERAL INCHES
LOWER THAN THOSE EXPECTED DURING THE EVENING HIGH TIDE...AND SHOULD
NOT CAUSE ANY FLOODING ISSUES.

AT KEY WEST HARBOR...WATER LEVELS ARE EXPECTED TO PEAK AROUND 2 FEET
ABOVE MEAN SEA LEVEL DURING THE EVENING HIGH TIDE...WHICH OCCURS AT
901 PM. 

AT VACA CUT...THE EVENING HIGH TIDE WILL OCCUR AT 750 PM.

AT WHALE HARBOR CHANNEL...THE EVENING HIGH TIDE WILL OCCUR AT 820 PM.

PLEASE REPORT COASTAL FLOODING TO YOUR FLORIDA KEYS NATIONAL
WEATHER SERVICE OFFICE. DIAL 305-295-1316 EXTENSION 3.

ADDITIONAL COASTAL FLOOD STATEMENTS WILL BE ISSUED AS NEEDED.

$$

JACOBSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 9, 7:16 PM EST	Coastal Flood Statement	KEY	Monroe	3 hr

Nearby

Coastal Flood Statements in Florida, 2011 Every coastal flood statement in 2011

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.