Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Melbourne, FL

June 23, 2021Osceola County, Florida

NWS Melbourne, FL issued this special weather statement at Jun 23, 2021, 3:57 PM EDT for Osceola County, Florida. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 23, 2021, 3:57 PM EDT (19:57 UTC)
Expired: Jun 23, 2021, 4:45 PM EDT
In force: 48 min
Issued by: NWS Melbourne, FL

County Osceola County, FL

The radar

The Melbourne radar (KMLB), 35 km from the middle of the area, began a volume at 19:59 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 8.0 hours before the alert went out and 61 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: 216 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 913 m above ground
0-6 km bulk shear: 1 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 weather statement went out at Jun 23, 3:51 PM EDT, 6 minutes earlier.

Area forecast discussion, Jun 23, 3:51 PM EDT, 6 minutes before

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Hazardous weather outlook, Jun 23, 11:31 AM EDT, 4 hours 26 minutes before

Hazardous Weather Outlook
National Weather Service Melbourne FL
1131 AM EDT Wed Jun 23 2021

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-232215-
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-
1131 AM EDT Wed Jun 23 2021

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

.THUNDERSTORM IMPACT...
Isolated lightning storms should develop along or just inland from
the coast early this afternoon, sparked by the east coast sea
breeze. Additional lightning storms along the west coast sea
breeze will move east to southeast up to 10 to 15 mph across the
peninsula this afternoon and collide with the east coast sea
breeze over inland east central Florida. Wind gusts near 50 mph
will occur in the stronger storms along with frequent lightning
strikes. An isolated storm may become severe with damaging winds
near 60 mph and hail. If thunder is heard, don't press your luck.
Seek shelter in an enclosed building or automobile.

.FLOOD IMPACT...
A moist and unstable airmass will combine with slower storm
motions to produce a threat for very heavy rain, with 2 to 3
inches possible in just a couple hours this afternoon and early
evening. Temporary flooding is likely for areas that experience
such rain rates, especially urbanized, low lying and poor drainage
locations. Most areas though will receive an inch or less.

.RIP CURRENT IMPACT...
There is a Moderate risk of dangerous, life-threatening rip
currents at all central Florida Atlantic beaches today. Always
swim within sight of a lifeguard, and never enter the surf alone.

.MARINE THUNDERSTORM GUST IMPACT...
Lightning storms will pose a threat to boaters on the inland
lakes, intracoastal and nearshore Atlantic waters this afternoon
and early evening. A few storms will produce wind gusts of 35 to
45 knots and frequent lightning strikes. Storm motions will be
slower and potentially more erratic than previous days, but a
general movement toward the east to southeast is expected.
Isolated storms are possible along the coast south of the Cape
early this afternoon with a higher storm coverage later in the day
over the interior then pushing toward the east coast.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
Scattered to numerous afternoon showers and lightning storms are
forecast. Cloud-to-ground lightning strikes, gusty winds and
torrential downpours will be the main threats with these storms.

The rip current risk will remain Moderate through the weekend.

.SPOTTER INFORMATION STATEMENT...
Spotters should monitor the weather and self activate if needed.

Kelly/Weitlich

In the hours before

Special weather statement, Jun 23, 1:34 PM EDT, 2 hours 23 minutes before

Special Weather Statement
National Weather Service Melbourne FL
134 PM EDT Wed Jun 23 2021

FLZ058-059-064-231830-
St. Lucie FL-Okeechobee FL-Martin FL-
134 PM EDT Wed Jun 23 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN ST. LUCIE...
SOUTHEASTERN OKEECHOBEE AND WESTERN MARTIN COUNTIES UNTIL 230 PM
EDT...

At 134 PM EDT, Doppler radar was tracking a strong thunderstorm over
Indiantown, moving northwest at 10 mph.

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

Locations impacted include...
Indiantown, J And S Fish Camp, Saint Lucie West, Tradition and Port
Mayaca.

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 2700 8062 2708 8066 2711 8066 2716 8071
      2720 8076 2717 8086 2732 8039 2696 8037
      2696 8061
TIME...MOT...LOC 1734Z 151DEG 9KT 2699 8048

Fehling

Special weather statement, Jun 23, 1:46 PM EDT, 2 hours 11 minutes before

Special Weather Statement
National Weather Service Melbourne FL
146 PM EDT Wed Jun 23 2021

FLZ059-064-231830-
St. Lucie FL-Martin FL-
146 PM EDT Wed Jun 23 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ST. LUCIE AND
EASTERN MARTIN COUNTIES UNTIL 230 PM EDT...

At 145 PM EDT, Doppler radar was tracking a strong thunderstorm near
Jonathan Dickinson State Park, or near Hobe Sound. This storm was
nearly stationary.

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

Locations impacted include...
Port Saint Lucie, Walton, Stuart, Tequesta and Jupiter Island.

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 2697 8007 2697 8014 2696 8014 2696 8037
      2732 8039 2737 8021
TIME...MOT...LOC 1745Z 155DEG 4KT 2702 8019

Fehling

Special weather statement, Jun 23, 3:25 PM EDT, 32 minutes before

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Special weather statement, Jun 23, 3:57 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 9:20 PM EDT	Special Marine Warning	MLB		115 min
Jun 23, 1:34 PM EDT	Special Weather Statement	MLB	Martin	56 min
Jun 23, 1:46 PM EDT	Special Weather Statement	MLB	Martin	44 min
Jun 23, 3:25 PM EDT	Special Weather Statement	MLB	Indian River, Martin, Okeechobee, Saint Lucie	65 min
Jun 23, 3:42 PM EDT	Areal Flood Advisory	MLB	Okeechobee	93 min
Jun 23, 5:00 PM EDT	Areal Flood Advisory	MLB	Brevard, Indian River, Osceola	90 min
Jun 23, 5:42 PM EDT	Areal Flood Advisory	MLB	Lake, Orange, Seminole	2 hr
Jun 23, 7:45 PM EDT	Areal Flood Advisory	MLB	Lake, Orange, Seminole, Volusia	90 min

Nearby

Special Weather Statements in Florida, 2021 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.