Alert archive / Florida / Special Weather Statements in 2024

Special Weather Statement, NWS Melbourne, FL

July 20, 2024Volusia County, Florida

NWS Melbourne, FL issued this special weather statement at Jul 20, 2024, 5:28 PM EDT for Volusia County, Florida. It was in force for 32 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
Jul 20, 2024, 5:28 PM EDT (21:28 UTC)
Expired
Jul 20, 2024, 6:00 PM EDT
In force
32 min
Issued by
NWS Melbourne, FL
Hail
0.00 in
Wind
50

County Volusia County, FL

The radar

The Melbourne radar (KMLB), 126 km from the middle of the area, began a volume at 21:29 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

Jacksonville, FL (KJAX), launched 12:00Z, 9.5 hours before the alert went out and 161 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, Jacksonville, FL at 12:00Z on 2024-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1297 joules per kilogram.LCLLFCEL10008507005003002001001 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, Jacksonville, FL at 12:00Z on 2024-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.1939Sfc1 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
1297 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
787 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
62 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 Jul 20, 2:12 PM EDT, 3 hours 16 minutes earlier.

Area forecast discussion, Jul 20, 2:12 PM EDT, 3 hours 16 minutes before
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Hazardous weather outlook, Jul 20, 4:46 AM EDT, 12 hours 42 minutes before
Hazardous Weather Outlook
National Weather Service Melbourne FL
446 AM EDT Sat Jul 20 2024

AMZ550-552-555-570-572-575-FLZ041-044>046-053-058-141-144-154-159-
164-247-254-259-264-347-447-547-647-747-210000-
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-Osceola-Okeechobee-Coastal Volusia-
Southern Lake-Coastal Indian River-Coastal Saint Lucie-
Coastal Martin-Inland Northern Brevard-Inland Indian River-
Inland Saint Lucie-Inland Martin-Mainland Northern Brevard-
Northern Brevard Barrier Islands-Inland Southern Brevard-
Mainland Southern Brevard-Southern Brevard Barrier Islands-
446 AM EDT Sat Jul 20 2024

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

.THUNDERSTORM IMPACT...
Scattered to numerous showers and storms are forecast across the
area this afternoon and evening. Initial development will be
along the coast with the developing east coast sea breeze early
this afternoon, with this activity increasing in coverage across
the interior from mid afternoon through early evening. Greatest
coverage is forecast to occur across and northwest of the I-4
corridor later in the day. Some stronger storms will be possible,
producing frequent lightning strikes, gusty winds to 40 to 45 mph,
small hail and locally heavy rainfall.

.EXCESSIVE RAINFALL IMPACT...
Any stronger or persistent storms will be capable of producing
locally heavy rainfall of 2 to 4 inches, especially across
northern portions of east central Florida where greatest storm
coverage is forecast later this afternoon. This may lead to
minor flooding of urban and poor drainage areas.

.EXCESSIVE HEAT IMPACT...
Highs in the low to mid 90s and humid conditions will produce
peak heat index values of 103 to 107 this afternoon. This will
lead to a Moderate to Major Heat Risk across the area today.
Those spending extended periods of time outside are encouraged to
protect themselves from the sun and the heat by taking frequent
breaks in the shade or an air conditioned building and remaining
well hydrated.

.RIP CURRENT AND SURF IMPACT...
A Moderate Risk of rip currents will exist at all east central
Florida beaches today. Always swim near a lifeguard and never
enter the ocean alone.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.
Drier air moving into the area Sunday may lower storm coverage
tomorrow. However, deeper moisture across the area into early
this week will again lead to higher rain chances on Monday and
Tuesday, with scattered to numerous lightning storms possible each
afternoon and evening. Greatest coverage will be across the
interior where boundary collisions between the sea breeze and
outflow boundaries are forecast to occur. Storms will be capable
of producing frequent lightning strikes, gusty winds, and locally
heavy rainfall.

Hot and humid conditions will continue through early this week,
with highs in the low to mid 90s and peak heat index values around
102 to 107. This will continue to produce a Moderate to Major Heat
Risk across east central Florida.

At least a Moderate risk of dangerous rip currents will continue at
area beaches Sunday through early this week.

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

Weitlich

In the hours before

Special weather statement, Jul 20, 1:24 PM EDT, 4 hours 4 minutes before
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Special weather statement, Jul 20, 5:28 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Melbourne FL
528 PM EDT Sat Jul 20 2024

FLZ041-202200-
Inland Volusia FL-
528 PM EDT Sat Jul 20 2024

...A STRONG THUNDERSTORM WILL IMPACT CENTRAL VOLUSIA COUNTY THROUGH
600 PM EDT...

At 528 PM EDT, Doppler radar was tracking a strong thunderstorm over
DeLand Airport, or near DeLeon Springs, moving north at 20 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Daytona Beach, DeLand, Barberville, DeLeon Springs, and DeLand
Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or hard-topped vehicle. Remember, when
thunder roars, go indoors!

&&

LAT...LON 2903 8118 2902 8139 2918 8148 2923 8119
TIME...MOT...LOC 2128Z 161DEG 18KT 2909 8129

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

Schaper

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 8:09 PM EDTSpecial Weather StatementMLBFlagler51 min
Jul 19, 8:21 PM EDTSpecial Weather StatementMLBLake24 min
Jul 19, 8:44 PM EDTSpecial Weather StatementMLBLake31 min
Jul 19, 9:16 PM EDTSpecial Weather StatementMLBVolusia44 min
Jul 20, 1:24 PM EDTSpecial Weather StatementMLBSaint Lucie36 min
Jul 20, 7:00 PM EDTSpecial Weather StatementMLBVolusia45 min
Jul 20, 7:07 PM EDTSpecial Weather StatementMLBFlagler38 min
Jul 20, 7:20 PM EDTSpecial Weather StatementMLBLake25 min
Jul 20, 7:42 PM EDTSpecial Weather StatementMLBLake, Volusia63 min

Nearby

Special Weather Statements in Florida, 2024Every special weather statement in 2024

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.