Alert archive / Florida / Special Marine Warnings in 2021

Special Marine Warning 116, NWS Melbourne, FL

July 20, 2021

NWS Melbourne, FL issued this special marine warning at Jul 20, 2021, 3:13 PM EDT. It was in force for 62 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: Jul 20, 2021, 3:13 PM EDT (19:13 UTC)
Expired: Jul 20, 2021, 4:15 PM EDT
In force: 62 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon
Hail: 0.0 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 Melbourne, FL wrote its last area forecast discussion before this special marine warning went out at Jul 20, 10:49 AM EDT, 4 hours 24 minutes earlier.

Area forecast discussion, Jul 20, 10:49 AM EDT, 4 hours 24 minutes before

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Hazardous weather outlook, Jul 20, 12:58 PM EDT, 2 hours 15 minutes before

Hazardous Weather Outlook
National Weather Service Melbourne FL
1258 PM EDT Tue Jul 20 2021

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-210000-
Flagler Beach to Volusia-Brevard County Line 0-20 nm-Volusia-
Brevard County Line to Sebastian Inlet 0-20 nm-
Sebastian Inlet to Jupiter Inlet 0-20 nm-Flagler Beach to Volusia-
Brevard County Line 20-60 nm-Volusia-
Brevard County Line to Sebastian Inlet 20-60 nm-
Sebastian Inlet to Jupiter Inlet 20-60 nm-Inland Volusia-
Northern Lake-Orange-Seminole-Southern Brevard-Osceola-
Indian River-Okeechobee-St. Lucie-Martin-Coastal Volusia-
Southern Lake-Northern Brevard-
1258 PM EDT Tue Jul 20 2021

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

.THUNDERSTORM IMPACT...
Scattered lightning storms will develop from this afternoon along
the east and west coast seabreezes, becoming numerous across the
interior by early evening with some storms also pushing back
toward the east coast this evening. Storm movement will be
generally to the northeast at 5 to 10 mph with slower more erratic
movement on larger boundary collisions. Highest coverage of
lightning storms will be for areas from Brevard and Osceola
counties northward with storms expected to last through the late
evening hours. Frequent lightning and heavy rainfall will be the
main hazards, but gusty winds to around 45 mph may accompany a few
stronger storms.

If threatening weather approaches or thunder is heard, seek
shelter in an enclosed building or automobile.

.FLOOD IMPACT...
With slow storm motion, rainfall amounts may reach 2 to 3 inches
in some spots, especially where larger scale boundary collisions
result in storm motion becoming slower. Higher potential of this
occurring will be across Seminole, Orange, Osceola, and portions
of Brevard county.

.RIP CURRENT IMPACT...
A Moderate risk of dangerous rip currents will exist at the
Atlantic beaches of central Florida. Always swim within sight of
a lifeguard and never swim alone.

.MARINE THUNDERSTORM GUST IMPACT...
Isolated to scattered storms that develop along the east coast
sea breeze from early to late afternoon could drift back toward
the Intracoastal and nearshore Atlantic waters. However, the more
favored areas of storms will be over inland lakes from late this
afternoon through this evening before additional storms push back
toward the coast this evening, especially north of Sebastian
Inlet. Stronger storms today will be capable producing wind gusts
of 35 to 40 knots as well as frequent lightning.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.
Scattered to numerous afternoon lightning storms are expected
each day this week and into the upcoming weekend. Frequent cloud
to ground lightning strikes and heavy rainfall will be the main
threats, but stronger storms may also produce winds gusts of 40 to
50 mph.

.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed this afternoon and tonight.

Negron/Combs

In the hours before

Special weather statement, Jul 20, 2:40 PM EDT, 33 minutes before

Special Weather Statement
National Weather Service Melbourne FL
240 PM EDT Tue Jul 20 2021

FLZ054-059-201930-
St. Lucie FL-Indian River FL-
240 PM EDT Tue Jul 20 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN ST. LUCIE AND
SOUTHEASTERN INDIAN RIVER COUNTIES UNTIL 330 PM EDT...

At 239 PM EDT, Doppler radar was tracking a strong thunderstorm over
Fort Pierce North, or near Fort Pierce, moving north at 20 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Fort Pierce, Vero Beach, Vero Beach South, Fort Pierce Inlet and
Indrio.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2737 8031 2742 8045 2766 8061 2764 8031
      2743 8023
TIME...MOT...LOC 1839Z 183DEG 17KT 2745 8037

Fehling

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 2:10 PM EDT	Special Marine Warning	MLB		65 min
Jul 20, 2:40 PM EDT	Special Weather Statement	MLB	Saint Lucie	50 min
Jul 20, 6:29 PM EDT	Areal Flood Advisory	MLB	Volusia	91 min
Jul 20, 6:44 PM EDT	Special Marine Warning	MLB		2 hr
Jul 20, 7:31 PM EDT	Areal Flood Advisory	MLB	Orange, Seminole	89 min
Jul 20, 7:42 PM EDT	Special Weather Statement	MLB	Orange, Seminole	48 min
Jul 20, 7:55 PM EDT	Areal Flood Advisory	MLB	Seminole, Volusia	95 min

Nearby

Special Marine Warnings in Florida, 2021 Every special marine warning in 2021

Sources

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