Alert archive / Florida / Special Weather Statements in 2017

Special Weather Statement, NWS Melbourne, FL

July 3, 2017Orange County, Florida

NWS Melbourne, FL issued this special weather statement at Jul 3, 2017, 5:24 PM EDT for Orange County, Florida. It was in force for 51 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 3, 2017, 5:24 PM EDT (21:24 UTC)
Expired
Jul 3, 2017, 6:15 PM EDT
In force
51 min
Issued by
NWS Melbourne, FL

County Orange County, FL

The radar

The Melbourne radar (KMLB), 84 km from the middle of the area, began a volume at 21:24 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, 9.4 hours before the alert went out and 84 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 2017-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1308 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 2017-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -50 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
1308 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
861 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-50 m²/s²
0-3 km storm-relative helicity
-17 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 3, 4:04 PM EDT, 1 hour 20 minutes earlier.

Area forecast discussion, Jul 3, 4:04 PM EDT, 1 hour 20 minutes before
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Hazardous weather outlook, Jul 3, 1:30 PM EDT, 3 hours 54 minutes before
Hazardous Weather Outlook
National Weather Service Melbourne FL
130 PM EDT Mon Jul 3 2017

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-
130 PM EDT Mon Jul 3 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

.THUNDERSTORM IMPACT...
Scattered showers and thunderstorms will develop through the
remainder of the afternoon, first across Lake and Volusia counties
and then spreading south into Seminole, Orange, Osceola, and
Okeechobee counties later this afternoon and evening. Isolated
thunderstorms along the Space and Treasure coasts should remain
inland, generally along and west of Interstate 95.

Storm motion will be slow and erratic once again. Cloud to ground
lightning and torrential rainfall amounts between one and three
inches in a 60 to 90 minute period will be the main storm threats.
Brief wind gusts of 40 to 50 MPH will also be possible in a few
stronger storms over the interior. Whenever skies look threatening,
or you hear thunder, move indoors to safety.

.MARINE THUNDERSTORM GUST IMPACT...
Thunderstorms could produce wind gusts up to 35 knots over large
inland lakes this afternoon.

.RIP CURRENT IMPACT...
Weather and ocean conditions will produce a moderate risk for
dangerous Rip Currents in the surf zone today at central Florida's
Atlantic beaches. The threat will be highest late this afternoon and
toward sunset. Check with the local beach patrol for additional
information about ocean hazards. Always swim within sight of a
lifeguard, and never swim alone.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
Scattered afternoon and early evening showers and lightning
storms are forecast throughout this week. Storm coverage will
remain highest over the interior counties. The primary threats
will be dangerous lightning strikes and locally heavy rainfall,
along with some brief gusty winds.

.SPOTTER INFORMATION STATEMENT...
Skywarn spotter networks are requested to activate should any
warnings be issued. This would likely be confined to Lake, Seminole,
Orange, Volusia and Osceola Counties today.

Cristaldi/Ulrich

In the hours before

Local storm report, Jul 3, 2:50 PM EDT, 2 hours 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MELBOURNE FL
250 PM EDT MON JUL 03 2017

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

0246 PM     TSTM WND GST     DAYTONA BEACH AIRPORT   29.17N 81.07W
07/03/2017  M40 MPH          VOLUSIA            FL   ASOS

            35 KNOT GUST FROM WSW.

&&

PG
Special weather statement, Jul 3, 2:53 PM EDT, 2 hours 31 minutes before
Special Weather Statement
National Weather Service Melbourne FL
253 PM EDT MON JUL 3 2017

FLZ141-031930-
Coastal Volusia County FL-
253 PM EDT MON JUL 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL VOLUSIA COUNTY UNTIL
330 PM EDT...

At 253 PM EDT, Doppler radar was tracking a strong thunderstorm near
Daytona Beach Airport, or near Port Orange, moving southeast at 20
mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Daytona Beach, Port Orange, New Smyrna Beach, Daytona International
Speedway and Daytona Beach Airport.

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.

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 vehicle.

&&

LAT...LON 2916 8118 2920 8106 2898 8088 2892 8109
TIME...MOT...LOC 1853Z 332DEG 19KT 2911 8108

Bragaw
Local storm report, Jul 3, 3:08 PM EDT, 2 hours 16 minutes before
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Special weather statement, Jul 3, 5:24 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
Jul 2, 8:03 PM EDTSpecial Weather StatementMLBSeminole27 min
Jul 2, 8:14 PM EDTSevere Thunderstorm WarningMLBSeminole31 min
Jul 3, 2:53 PM EDTSpecial Weather StatementMLBVolusia37 min
Jul 3, 3:02 PM EDTSevere Thunderstorm WarningMLBVolusia28 min

Nearby

Special Weather Statements in Florida, 2017Every special weather statement in 2017

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.