Alert archive / Florida / Special Weather Statements in 2018

Special Weather Statement, NWS Melbourne, FL

October 10, 2018Lake County, Florida

NWS Melbourne, FL issued this special weather statement at Oct 10, 2018, 5:14 PM EDT for Lake County, Florida. It was in force for 31 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
Oct 10, 2018, 5:14 PM EDT (21:14 UTC)
Expired
Oct 10, 2018, 5:45 PM EDT
In force
31 min
Issued by
NWS Melbourne, FL

County Lake County, FL

The radar

The Melbourne radar (KMLB), 141 km from the middle of the area, began a volume at 21:15 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, 9.2 hours before the alert went out and 131 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, Cape Canaveral, FL at 12:00Z on 2018-10-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1125 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, Cape Canaveral, FL at 12:00Z on 2018-10-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 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
1125 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
816 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
69 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 Oct 10, 4:17 PM EDT, 57 minutes earlier.

Area forecast discussion, Oct 10, 4:17 PM EDT, 57 minutes before
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Hazardous weather outlook, Oct 10, 5:01 AM EDT, 12 hours 13 minutes before
Hazardous Weather Outlook
National Weather Service Melbourne FL
501 AM EDT Wed Oct 10 2018

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-102115-
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-
501 AM EDT Wed Oct 10 2018

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

.THUNDERSTORM IMPACT...
Hurricane Michael continues to advance northward in the northern
Gulf and is expected to make landfall this afternoon in the FL
Panhandle. Peripheral squall like showers and storms will move
north across east central FL today. These showers and storms will
be capable of producing dangerous lightning strikes, wind gusts of
40 to 50 MPH and heavy rainfall in a short period of time,
leading to accumulations of 1 inch with locally higher amounts
that may contribute to flooding of low areas.

An isolated tornado or two is possible in these squalls north and
west of Interstate 4 where a marginal risk of severe weather is
forecast. An isolated waterspout over the Atlantic waters is also
possible.

Shower and storm motion will be to the north/northwest at 30 to 35
mph as Hurricane Michael pushes northward through this afternoon.

.RIP CURRENT IMPACT...
Gusty southeast winds and long period swell will produce a
Moderate Risk for rip currents. Rip current activity will be
present all day, but is highest in the hours surrounding low tide,
which occurs in the mid afternoon today. Always swim in sight of a
lifeguard and never swim alone.

.MARINE THUNDERSTORM GUST IMPACT...
Gusty showers and storms associated with the outer rainbands of
Hurricane Michael will be capable of producing wind gusts over 35
knots today over inland lakes, the Intracoastal and open Atlantic
waters. Mariners should keep watch for quick moving showers from
the south and seek safe harbor when skies look threatening.

.WIND AND SEA IMPACT...
Poor to hazardous boating conditions continue today with south to
southeast winds of 15 to 20 knots producing seas of 6 to 8 feet
over the coastal waters. A Small Craft Advisory remains in effect
for nearshore waters north of Sebastian Inlet and for all offshore
zones. Small craft should still exercise caution south of
Sebastian for seas of 5 to 6 feet and SE winds 10 to 15 knots.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
Hurricane Michael will move quickly to the northeast after
landfall, approaching the Mid Atlantic by late Thursday. Coverage
of showers and storms will decrease through the weekend as dry air
moves in behind a weak frontal boundary.

Hazardous beach and boating conditions will slowly diminish
through late week as Michael lifts to the northeast.

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

Smith

In the hours before

Local storm report, Oct 10, 4:10 PM EDT, 1 hour 4 minutes before
PRELIMINARY LOCAL STORM REPORT
National Weather Service Melbourne FL
410 PM EDT WED OCT 10 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0406 PM     TSTM WND GST     SANFORD AIRPORT         28.78N 81.24W
10/10/2018  M47 MPH          SEMINOLE           FL   ASOS

            ASOS AT SANFORD AIRPORT MEASURED PEAK GUST OF 47 MPH OR
            41 KNOTS FROM THE SOUTHWEST.

&&

KR
Special weather statement, Oct 10, 4:10 PM EDT, 1 hour 4 minutes before
Special Weather Statement
National Weather Service Melbourne FL
410 PM EDT WED OCT 10 2018

FLZ041-046-141-102045-
Coastal Volusia FL-Seminole FL-Inland Volusia FL-
410 PM EDT WED OCT 10 2018

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL SEMINOLE AND CENTRAL
VOLUSIA COUNTIES UNTIL 445 PM EDT...

At 409 PM EDT, Doppler radar was tracking a strong thunderstorm near
Sanford, moving north at 40 mph. At 406 PM EDT a 47 mph wind gust
was observed at the Sanford Airport.

Wind gusts of 50 mph will be possible with this storm.

Locations impacted include...
Deltona, Port Orange, Sanford, DeLand and New Smyrna Beach.

LAT...LON 2870 8117 2876 8134 2916 8122 2908 8101
TIME...MOT...LOC 2009Z 197DEG 33KT 2881 8122

Rodriguez
Special weather statement, Oct 10, 4:37 PM EDT, 37 minutes before
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Local storm report, Oct 10, 4:51 PM EDT, 23 minutes before
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Local storm report, Oct 10, 5:04 PM EDT, 10 minutes before
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Special weather statement, Oct 10, 5:14 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 10, 4:30 AM EDTBeach Hazards StatementMLBVolusia15 hr
Oct 10, 2:59 PM EDTSpecial Weather StatementMLBOrange31 min
Oct 10, 3:30 PM EDTSpecial Weather StatementMLBOrange30 min
Oct 10, 4:02 PM EDTSpecial Weather StatementMLBVolusia28 min
Oct 10, 4:10 PM EDTSpecial Weather StatementMLBVolusia35 min
Oct 10, 4:33 PM EDTSpecial Marine WarningMLB87 min
Oct 10, 4:37 PM EDTSpecial Weather StatementMLBVolusia23 min

Nearby

Special Weather Statements in Florida, 2018Every 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.