Alert archive / Florida / Areal Flood Advisories in 2020

Areal Flood Advisory 21, NWS Key West, FL

October 1, 2020Monroe County, Florida

NWS Key West, FL issued this areal flood advisory at Oct 1, 2020, 11:04 PM EDT for Monroe County, Florida. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Oct 1, 2020, 11:04 PM EDT (03:04 UTC)
Expired
Oct 2, 2020, 12:04 AM EDT
In force
60 min
Issued by
NWS Key West, FL
Area
Storm-based polygon

County Monroe County, FL

The radar

The Miami radar (KAMX), 51 km from the middle of the area, began a volume at 03:05 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.

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 Key West, FL wrote its last area forecast discussion before this areal flood advisory went out at Oct 1, 10:20 PM EDT, 44 minutes earlier.

Area forecast discussion, Oct 1, 10:20 PM EDT, 44 minutes before
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Hazardous weather outlook, Oct 1, 4:05 AM EDT, 18 hours 59 minutes before
Hazardous Weather Outlook
National Weather Service Key West FL
405 AM EDT Thu Oct 1 2020

FLZ076>078-GMZ031>035-042>044-052>055-072>075-020815-
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-
405 AM EDT Thu Oct 1 2020

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

.DAY ONE...TODAY AND TONIGHT

Isolated to scattered thunderstorms will be possible today and
tonight, with a better chance tonight. The primary thunderstorm
hazards will be cloud to surface lightning strikes, locally gusty
winds and localized heavy rainfall, especially overnight tonight.
In addition, conditions will remain marginally favorable for
waterspouts.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Showers and thunderstorms are likely from Friday through at least
Sunday. The heaviest rainfall is expected to occur between
Friday and Saturday night. Widespread rainfall amounts between
three to seven inches are expected at this time, although there
remains some uncertainty in the exact rainfall totals. The
combination of heavy rainfall and high astronomical tides may lead
to periods of localized flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Local storm report, Oct 1, 6:16 PM EDT, 4 hours 48 minutes before
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Local storm report, Oct 1, 8:27 PM EDT, 2 hours 37 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 2, 6:15 AM EDTAreal Flood AdvisoryKEYMonroe3 hr
Oct 2, 4:55 PM EDTSpecial Marine WarningKEY27 min

Nearby

Areal Flood Advisories in Florida, 2020Every areal flood advisory in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.