Alert archive / Florida / Coastal Flood Statements in 2015

Coastal Flood Statement 13, NWS Key West, FL

October 22, 2015Monroe County, Florida

NWS Key West, FL issued this coastal flood statement at Oct 22, 2015, 1:10 PM EDT for Monroe County, Florida. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Oct 22, 2015, 1:10 PM EDT (17:10 UTC)
Expired: Oct 22, 2015, 5:00 PM EDT
In force: 4 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 17:08 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, 5.2 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: 146 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 812 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 14 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.

883 
WHUS42 KKEY 221710
CFWKEY

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE KEY WEST FL
110 PM EDT THU OCT 22 2015

FLZ076-222100-
/O.NEW.KKEY.CF.S.0013.151022T1710Z-151022T2100Z/
MONROE UPPER KEYS-
110 PM EDT THU OCT 22 2015

...MINOR COASTAL FLOODING PERSISTS IN THE UPPER KEYS...

* COASTAL FLOODING...COASTAL FLOODING WILL PERSIST IN SOME BAYSIDE OF
  COMMUNITIES OF THE UPPER KEYS LATE THIS AFTERNOON. WATER LEVELS
  WILL AVERAGE AROUND ONE FOOT ABOVE PREDICTED TIDES.

* TIMING...OBSERVED WATER LEVELS WILL BE HIGHEST DURING TIMES OF HIGH
  TIDE LATE THIS AFTERNOON...AS WELL AS ONCE AGAIN SEVERAL HOURS
  BEFORE SUNRISE FRIDAY MORNING. COASTAL FLOODING MAY PERSIST IN
  SOME BAYSIDE COMMUNITIES OF THE UPPER KEYS INTO THE UPCOMING
  WEEKEND.

* IMPACTS...THE PRIMARY HAZARD WILL BE SALTWATER FLOODING OF THE
  LOWEST ELEVATION STREETS. SOME STORM DRAINS WILL OVERFLOW...AND
  SOME DOCKS AND SEAWALLS WILL BE OVER-TOPPED.

$$

DAF

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 22, 4:02 AM EDT	Coastal Flood Statement	KEY	Monroe	8 hr

Nearby

Coastal Flood Statements in Florida, 2015 Every coastal flood statement in 2015

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.