Alert archive / Florida / Special Weather Statements in 2018

Special Weather Statement, NWS Melbourne, FL

September 3, 2018Seminole County, Florida

NWS Melbourne, FL issued this special weather statement at Sep 3, 2018, 4:12 PM EDT for Seminole County, Florida. It was in force for 33 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: Sep 3, 2018, 4:12 PM EDT (20:12 UTC)
Expired: Sep 3, 2018, 4:45 PM EDT
In force: 33 min
Issued by: NWS Melbourne, FL

County Seminole County, FL

The radar

The Melbourne radar (KMLB), 63 km from the middle of the area, began a volume at 20:12 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, 8.2 hours before the alert went out and 48 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: 1251 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 864 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

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 Sep 3, 3:31 PM EDT, 41 minutes earlier.

Area forecast discussion, Sep 3, 3:31 PM EDT, 41 minutes before

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Hazardous weather outlook, Sep 3, 12:31 PM EDT, 3 hours 41 minutes before

Hazardous Weather Outlook...CORRECTED
National Weather Service Melbourne FL
1231 PM EDT Mon Sep 3 2018

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-040000-
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 County-
Northern Lake County-Orange-Seminole-Southern Brevard County-
Osceola-Indian River-Okeechobee-St. Lucie-Martin-
Coastal Volusia County-Southern Lake County-
Northern Brevard County-
1231 PM EDT Mon Sep 3 2018

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

.THUNDERSTORM IMPACT...
Deep moisture across east central Florida and breezy onshore flow to
the north of Tropical Storm Gordon at mid day will allow numerous
showers and scattered lightning storms to develop into late
afternoon and track west northwest 30 mph. Activity will initially
develop across the Atlantic and then track toward the interior
this afternoon. Locally heavy rainfall amounts to 1 to 2 inches,
gusty winds up to 45 to 50 mph and occasional cloud to ground
lightning strikes can be expected.

.FLOOD IMPACT...
Locally heavy rainfall amounts will be possible with showers and
storms that train onshore into late afternoon. Minor flooding of
low-lying and poor drainage areas will be possible in locations
that see repeated rounds of showers and storms.

.RIP CURRENT IMPACT...
Rough surf conditions will prevail today due to a breezy onshore
flow and an increasing ocean swell. A moderate rip current risk
will continue today. Only enter the ocean near a lifeguard and
never swim alone.

.MARINE THUNDERSTORM GUST IMPACT...
Gusty winds up to 35 to 45 knots will occur in numerous showers
and scattered thunderstorms over the local Atlantic waters, the
intracoastal waterways, and over inland lakes. Storm motion will
be to the west northwest at 30 mph.

.WATERSPOUT IMPACT...
Numerous showers and scattered lightning storms across the
Atlantic waters mainly south of Cape Canaveral will have a very
low but discernible risk to produce waterspouts as they move
toward the nearshore Atlantic waters into the afternoon hours.

.WIND AND SEA IMPACT...
Easterly winds to 15 to 20 knots will produce rough chop over the
open Atlantic with 4 to 5 foot seas with dominant periods around 6
seconds. Small craft operators should exercise caution.

.RIVER FLOOD IMPACT...
The Saint Johns River at Geneva will remain above action stage and
the river level at Astor will remain near action stage this week.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
Steady easterly winds will continue across the region through the
week. Scattered to numerous thunderstorms are expected each day.
The primary storm threats will be frequent lightning strikes and
gusty winds. Local heavy downpours also will produce ponding of
water on roadways and in other poorly drained areas.

.SPOTTER INFORMATION STATEMENT...
Spotters are requested to monitor the weather and self activate
if needed.

Volkmer/Bragaw

In the hours before

Local storm report, Sep 3, 1:57 PM EDT, 2 hours 15 minutes before

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Local storm report, Sep 3, 2:36 PM EDT, 1 hour 36 minutes before

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Local storm report, Sep 3, 3:01 PM EDT, 1 hour 11 minutes before

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Special weather statement, Sep 3, 3:04 PM EDT, 1 hour 8 minutes before

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Special weather statement, Sep 3, 3:39 PM EDT, 33 minutes before

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Special weather statement, Sep 3, 4:12 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
Sep 3, 4:41 AM EDT	Special Marine Warning	MLB		49 min
Sep 3, 5:02 AM EDT	Special Weather Statement	MLB	Brevard	43 min
Sep 3, 11:18 AM EDT	Beach Hazards Statement	MLB	Volusia	9 hr
Sep 3, 11:32 AM EDT	Special Marine Warning	MLB		88 min
Sep 3, 11:42 AM EDT	Special Weather Statement	MLB	Martin, Okeechobee	48 min
Sep 3, 11:51 AM EDT	Special Weather Statement	MLB	Indian River	39 min
Sep 3, 12:24 PM EDT	Special Weather Statement	MLB	Indian River, Okeechobee, Saint Lucie	66 min
Sep 3, 12:27 PM EDT	Special Weather Statement	MLB	Osceola	63 min
Sep 3, 1:00 PM EDT	Special Marine Warning	MLB		2 hr
Sep 3, 1:04 PM EDT	Special Weather Statement	MLB	Lake	56 min
Sep 3, 1:15 PM EDT	Severe Thunderstorm Warning	MLB	Osceola	30 min
Sep 3, 1:30 PM EDT	Special Weather Statement	MLB	Indian River	45 min
Sep 3, 1:52 PM EDT	Areal Flood Advisory	MLB	Indian River	98 min
Sep 3, 2:57 PM EDT	Special Marine Warning	MLB		2 hr
Sep 3, 3:04 PM EDT	Special Weather Statement	MLB	Lake, Volusia	41 min
Sep 3, 3:39 PM EDT	Special Weather Statement	MLB	Brevard	36 min
Sep 3, 4:02 PM EDT	Special Marine Warning	MLB		118 min

Nearby

Special Weather Statements in Florida, 2018 Every special weather statement in 2018

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.