Alert archive / Florida / Special Weather Statements in 2017

Special Weather Statement, NWS Melbourne, FL

June 16, 2017Orange County, Florida

NWS Melbourne, FL issued this special weather statement at Jun 16, 2017, 2:27 PM EDT for Orange County, Florida. It was in force for 63 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 16, 2017, 2:27 PM EDT (18:27 UTC)
Expired
Jun 16, 2017, 3:30 PM EDT
In force
63 min
Issued by
NWS Melbourne, FL

County Orange County, FL

The radar

The Melbourne radar (KMLB), 67 km from the middle of the area, began a volume at 18:29 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 6.5 hours before the alert went out and 90 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 2017-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 15 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 2017-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 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
15 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
980 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-6 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 Jun 16, 9:15 AM EDT, 5 hours 12 minutes earlier.

Area forecast discussion, Jun 16, 9:15 AM EDT, 5 hours 12 minutes before
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Hazardous weather outlook, Jun 16, 10:55 AM EDT, 3 hours 32 minutes before
Hazardous Weather Outlook
National Weather Service Melbourne FL
1055 AM EDT Fri Jun 16 2017

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-170200-
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-
1055 AM EDT Fri Jun 16 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

.THUNDERSTORM IMPACT...
A moist and unstable air mass remains in place over central Florida,
with numerous showers already having formed over western Florida
late this morning. As this activity along and ahead of the west
coast sea breeze moves northeast at around 10 MPH into the central
and eastern peninsula, it will further increase in coverage as well
as intensity becoming widespread as it interacts with showers and
storms that are expected to form along local sea and lake breezes.

The main storm hazards will be cloud to ground lightning strikes and
torrential rainfall, especially within stronger storms. A few wind
gusts to 30 or 40 MPH will also be possible.

.FLOOD IMPACT...
Some of today's storms will be able to produce torrential downpours
of 2 to 3 inches in a 60 to 90 minute period. This will result in
considerable water ponding on roadways and other poorly drained and
low lying areas.

.MARINE THUNDERSTORM GUST IMPACT...
Numerous showers and thunderstorms will occur over land this
afternoon, with the activity pushing northeast at 10 knots into
the nearshore Atlantic waters. In addition to hazardous lightning
strikes, there is a chance for wind gusts to around 35 knots.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.
Moist conditions will remain in place into the middle of next
week. Little, if any, interruption to the pattern of numerous
afternoon showers and thunderstorms is expected. The highest
coverage will shift to the western half of the peninsula early
next week.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated. Rainfall observers are
requested to report measured rain amounts of three inches or
greater to the National Weather Service in Melbourne.

Bragaw/Cristaldi

In the hours before

Local storm report, Jun 16, 9:52 AM EDT, 4 hours 35 minutes before
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Special weather statement, Jun 16, 2:27 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Melbourne FL
227 PM EDT FRI JUN 16 2017

FLZ045-053-161930-
Osceola FL-Orange FL-
227 PM EDT FRI JUN 16 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ORANGE AND
NORTHWESTERN OSCEOLA COUNTIES UNTIL 330 PM EDT...

At 226 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Conway to Oak Ridge to West Lake Toho to near
Poinciana to near Lake Wales. Movement was east at 15 mph.

Wind gusts of 40 to 45 mph will be possible with these storms.

Locations impacted include...
Orlando, Kissimmee, Saint Cloud, Wedgefield and Azalea Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2819 8152 2823 8148 2848 8147 2856 8133
      2854 8103 2846 8107 2822 8109 2813 8120
      2784 8123 2784 8126 2785 8127 2786 8130
      2795 8134 2800 8142 2806 8146 2801 8138
      2808 8135 2809 8145 2814 8146 2814 8152
TIME...MOT...LOC 1826Z 271DEG 11KT 2850 8131 2848 8140 2824 8141 2814
8152 2796 8153

Cristaldi

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 3:16 PM EDTSpecial Weather StatementMLBBrevard, Seminole89 min
Jun 16, 3:20 PM EDTSpecial Marine WarningMLB115 min
Jun 16, 3:54 PM EDTAreal Flood AdvisoryMLBBrevard, Volusia2 hr
Jun 16, 4:05 PM EDTSpecial Weather StatementMLBBrevard, Indian River, Okeechobee55 min
Jun 16, 4:14 PM EDTSpecial Marine WarningMLB91 min
Jun 16, 4:41 PM EDTAreal Flood AdvisoryMLBBrevard94 min
Jun 16, 5:17 PM EDTSpecial Weather StatementMLBIndian River, Saint Lucie58 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.