Alert archive / Florida / Special Marine Warnings in 2020

Special Marine Warning 621, NWS Miami, FL

October 16, 2020

NWS Miami, FL issued this special marine warning at Oct 16, 2020, 4:55 PM EDT. It was in force for 95 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 16, 2020, 4:55 PM EDT (20:55 UTC)
Expired: Oct 16, 2020, 6:30 PM EDT
In force: 95 min
Issued by: NWS Miami, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 34.0 mph

What forecasters said that day

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

NWS Miami, FL wrote its last area forecast discussion before this special marine warning went out at Oct 16, 4:42 PM EDT, 13 minutes earlier.

Area forecast discussion, Oct 16, 4:42 PM EDT, 13 minutes before

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Hazardous weather outlook, Oct 16, 9:09 AM EDT, 7 hours 46 minutes before

Hazardous Weather Outlook for South Florida...UPDATED
National Weather Service Miami FL
909 AM EDT Fri Oct 16 2020

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
170115-
Lake Okeechobee-Biscayne Bay-
Coastal waters from Jupiter Inlet to Deerfield Beach FL out 20 NM-
Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM-
Waters from Jupiter Inlet to Deerfield Beach FL from 20 to 60 NM-
Waters from Deerfield Beach to Ocean Reef FL from 20 to 60 NM
excluding the territorial waters of Bahamas-Glades-Hendry-
Inland Palm Beach-Metro Palm Beach-Coastal Collier-Inland Collier-
Inland Broward-Metro Broward-Inland Miami-Dade-Metro Miami-Dade-
Mainland Monroe-Coastal Palm Beach-Coastal Broward-Coastal Miami-
Dade-Far South Miami-Dade-
Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM-
Coastal waters from East Cape Sable to Chokoloskee FL out 20 NM-
Waters from Chokoloskee to Bonita Beach FL from 20 to 60 NM-
909 AM EDT Fri Oct 16 2020

...GUSTY WINDS IN THUNDERSTORMS POSSIBLE TODAY...
...LOCALIZED URBAN FLOODING WILL BE POSSIBLE...
...MINOR COASTAL FLOODING DURING HIGH TIDES...

This hazardous weather outlook is for South Florida.

.DAY ONE...TODAY AND TONIGHT

Thunderstorms: Scattered to numerous showers and thunderstorms will
be possible, primarily across the eastern portions of South Florida
and the Lake Okeechobee region. The strongest storms will be capable
of frequent cloud to ground lightning, gusty winds, heavy rainfall,
and localized flooding.

Coastal Flooding: Higher than normal tides (highest predicted tides
of the year) could lead to minor coastal flooding around the periods
of high tide.

Rip Currents: There is a moderate risk of rip currents at the
Atlantic Coast beaches.

Flooding: Locally heavy rainfall, especially in areas that see salt
water intrusion from higher than normal tides, could lead to
flooding of urban and/or poorly drained areas.

Wind: Wind gusts up to 45 mph may be possible in the strongest
thunderstorms this afternoon and evening.

Waterspouts: A few waterspouts cannot be ruled out across the local
waters.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

Higher than normal tides (highest predicted tides of the year) could
lead to minor coastal flooding through the forecast period.

Shower and thunderstorm chances and associated hazards continue late
week as a cold front stalls near the Lake region. Breezy easterly
winds are expected this weekend which may lead to hazardous marine
and boating conditions along with an increase in the threat of rip
currents along the east coast beaches of South Florida.

.SPOTTER INFORMATION STATEMENT...

Widespread spotter activation is not anticipated, however individual
spotters are encouraged to report high wind, hail, waterspouts, and
flooding to the National Weather Service forecast office in Miami.
Please relay any information about observed severe weather to the NWS
while following all local, state, and CDC guidelines.

For more information...visit the National Weather Service in
Miami website at www.weather.gov/miami.

In the hours before

Special weather statement, Oct 16, 3:38 PM EDT, 1 hour 17 minutes before

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Special weather statement, Oct 16, 3:59 PM EDT, 56 minutes before

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Special weather statement, Oct 16, 4:05 PM EDT, 50 minutes before

Special Weather Statement
National Weather Service Miami FL
405 PM EDT Fri Oct 16 2020

FLZ073-074-173-174-162100-
Metropolitan Miami Dade FL-Far South Miami-Dade County FL-
Inland Miami-Dade County FL-Coastal Miami Dade County FL-
405 PM EDT Fri Oct 16 2020

...SIGNIFICANT WEATHER ADVISORY FOR METRO MIAMI-DADE COUNTY UNTIL
500 PM EDT...

* At 405 PM EDT, National Weather Service meteorologists were
  tracking strong thunderstorms along a line extending from near
  Intersection Krome And U.S. 27 to near The Redland to near Ocean
  Reef. Movement was northeast at 5 TO 10 mph.

* Small hail, funnel clouds, and winds in excess of 45 mph possible
  with these storms.

* Locations impacted include...
  Miami, Hialeah, Miramar, Miami Beach, Homestead, Coral Gables, Key
  Biscayne, South Miami, Surfside, Homestead General Airport, Miami
  Gardens, Turkey Point, Virginia Key, Homestead Miami Speedway,
  Black Point, The Redland, Kendall, North Miami, Doral and North
  Miami Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Miami on Facebook and
Twitter.

&&

LAT...LON 2537 8015 2531 8024 2533 8026 2535 8027
      2534 8027 2529 8033 2530 8039 2528 8041
      2526 8040 2527 8042 2526 8042 2551 8059
      2592 8050 2596 8045 2597 8010 2563 8009
      2560 8013 2552 8009
TIME...MOT...LOC 2005Z 214DEG 10KT 2590 8045 2558 8053 2533 8034

BAXTER

Local storm report, Oct 16, 4:43 PM EDT, 12 minutes before

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Special weather statement, Oct 16, 4:50 PM EDT, 5 minutes before

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Special weather statement, Oct 16, 4:53 PM EDT, 2 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 16, 7:23 AM EDT	Areal Flood Advisory	MFL	Broward, Miami-Dade	112 min
Oct 16, 8:50 AM EDT	Special Marine Warning	MFL		55 min
Oct 16, 9:42 AM EDT	Special Marine Warning	MFL		63 min
Oct 16, 1:57 PM EDT	Special Weather Statement	MFL	Monroe	48 min
Oct 16, 2:23 PM EDT	Special Weather Statement	MFL	Collier	52 min
Oct 16, 2:32 PM EDT	Special Weather Statement	MFL	Broward	28 min
Oct 16, 2:38 PM EDT	Special Weather Statement	MFL	Monroe	52 min
Oct 16, 3:18 PM EDT	Rip Current Statement	MFL	Broward, Miami-Dade, Palm Beach	13 days
Oct 16, 3:23 PM EDT	Special Weather Statement	MFL	Miami-Dade	52 min
Oct 16, 3:38 PM EDT	Special Weather Statement	MFL	Miami-Dade	52 min
Oct 16, 3:50 PM EDT	Special Marine Warning	MFL		55 min
Oct 16, 3:59 PM EDT	Special Weather Statement	MFL	Collier	46 min
Oct 16, 4:05 PM EDT	Special Weather Statement	MFL	Miami-Dade	55 min
Oct 16, 4:13 PM EDT	Special Marine Warning	MFL		62 min
Oct 16, 4:50 PM EDT	Special Weather Statement	MFL	Collier	40 min
Oct 16, 4:53 PM EDT	Special Weather Statement	MFL	Miami-Dade	52 min
Oct 16, 4:55 PM EDT	Areal Flood Advisory	MFL	Collier	110 min
Oct 16, 5:02 PM EDT	Special Weather Statement	MFL	Hendry	43 min
Oct 16, 5:07 PM EDT	Areal Flood Advisory	MFL	Broward, Miami-Dade	3 hr
Oct 16, 5:31 PM EDT	Special Weather Statement	MFL	Hendry	44 min
Oct 16, 6:02 PM EDT	Special Marine Warning	MFL		88 min

Nearby

Special Marine Warnings in Florida, 2020 Every special marine warning 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.