Alert archive / Florida / Coastal Flood Statements in 2022

Coastal Flood Statement 19, NWS Key West, FL

September 29, 2022Monroe County, Florida

NWS Key West, FL issued this coastal flood statement at Sep 29, 2022, 3:59 PM EDT for Monroe County, Florida. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Sep 29, 2022, 3:59 PM EDT (19:59 UTC)
Expired
Sep 30, 2022, 3:58 AM EDT
In force
12 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 20:05 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

Tampa Bay, FL (KTBW), launched 12:00Z, 8.0 hours before the alert went out and 281 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, Tampa Bay, FL at 12:00Z on 2022-09-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Tampa Bay, FL at 12:00Z on 2022-09-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 244 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
618 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
244 m²/s²
0-3 km storm-relative helicity
305 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Key West, FL wrote its last area forecast discussion before this coastal flood statement went out at Sep 29, 3:17 PM EDT, 42 minutes earlier.

Area forecast discussion, Sep 29, 3:17 PM EDT, 42 minutes before
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Hazardous weather outlook, Sep 29, 4:43 AM EDT, 11 hours 16 minutes before
Hazardous Weather Outlook
National Weather Service Key West FL
443 AM EDT Thu Sep 29 2022

FLZ076>078-GMZ031>035-042>044-052>055-072>075-300930-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
Bayside and Gulf side from Craig Key to west end of Seven Mile
Bridge-
Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out
and beyond 5 fathoms-
Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel-
Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
Straits of Florida from Ocean Reef to Craig Key out 20 NM-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge out 20 NM-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal out 20 NM-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas out 20 NM-
Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge 20 to 60 NM out-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal 20 to 60 NM out-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas 20 to 60 NM out-
443 AM EDT Thu Sep 29 2022

This Hazardous Weather Outlook is for the Florida Keys and
adjacent coastal waters.

.DAY ONE...Today and tonight.

...Coastal Food Warning in Effect for the Upper Keys...

Significant coastal flooding will continue in Bayside communities
of Key Largo today and tonight. With persistent west to northwest
winds, these areas will see very high water levels of 2 to 3 feet
above normal tides continue, with little if any relief at low
tide.

A Small Craft Advisory is posted for all Keys coastal waters
today, due to west to northwest winds near 20 knots, and seas as
high as 7 to 11 feet across the Straits of Florida and offshore
Gulf waters. Winds are expected to drop below 20 knots tonight,
but seas will remain around 7 feet across parts of the offshore
Gulf waters and Lower Straits.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Coastal flooding will likely persist across the Bayside
communities of Key Largo on Friday, and possibly into the weekend,
with only slow improvement expected as the excess water will be
slow to drain back out of eastern Florida Bay.

Seas around 7 feet may linger across the offshore Gulf waters on
Friday morning.

Otherwise, no hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Sep 29, 3:26 PM EDT, 33 minutes before
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Local storm report, Sep 29, 3:57 PM EDT, 2 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 29, 3:57 AM EDTCoastal Flood AdvisoryKEYMonroe24 hr

Nearby

Coastal Flood Statements in Florida, 2022Every coastal flood statement in 2022

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.