Special Weather Statement, NWS Melbourne, FL

Area Forecast Discussion
National Weather Service Melbourne FL
1113 AM EDT Sun Jun 13 2021

.UPDATE...
An earlier start to convection this morning than yesterday.
Scattered showers are currently moving across northern parts of east
central Florida, mainly from Orlando northward, moving eastward
around 15 to 20 mph. Additional showers and lightning storms have
formed north of Tampa along the west coast of Florida, and are moving
eastward around 15 mph. These additional showers and storms are
expected to move across the local area from northern Osceola
county northward through the morning. Current model guidance
shows 2 potential rounds of convection today. The first round will
be this morning, mainly impacting areas from northern Brevard and
northern Osceola northward as the upper-level trough digs south
and the stationary boundary slowly moves closer to the Space
Coast. The second round is expected in the afternoon and will
persist through early evening, mainly impacting the coast and
across the north as collisions between outflow boundaries from
previous storms and the sea breeze occur. Timing of convection
this afternoon may be a little tricky, but for now the model
guidance is indicating from 2 PM to 8 PM will be the likeliest
times for storms. Forecast soundings show PW values of 1.8-2.0
inches, with a fairly moist mid layer across the north, and lower
PW values (1.5-1.7 inches) and a fairly dry mid layer across the
south, further indicating the main areas for convection will be
across the north today. Main impacts from storms today will be
heavy rain, frequent cloud- to- ground lightning, gusty winds up
to 45 mph, and small hail.

Another warm day for east central Florida with afternoon highs in
the low 90s under partly to mostly cloudy skies. Overnight lows will
be in the low to mid 70s under mostly cloudy skies.

&&

.Aviation... Scattered showers and lightning storms this morning,
mainly from MCO northward. Included a Tempo group starting 14/16Z
for 3SM TSRA first starting at KLEE and then moving eastward through
time. Brief MVFR ceilings this morning as a broad cu deck is
filtering down from the north, mainly from TIX northward. Winds
today will be SW 5-10 KT, with a sea breeze developing late across
coastal terminals before veering once again to the SW around 5 KT
overnight. A second round of showers and storms expected this
afternoon, starting around 18Z. Included Tempo groups around 22Z for
3SM TSRA for all TAF sites. VFR conditions outside of convection.

&&

.Marine...
Scattered showers this morning, mainly from Brevard northward as the
upper-level trough digs south and the stationary boundary slowly
moves closer to the Space Coast. Current buoy 41009 observations
show seas are 2 ft with winds around 12KT. Another round of showers
and storms are expected this afternoon, with cell movement from the
west, moving eastward around 15-20KT. Winds will be S/SW around 10
KT this morning before backing to S/SSE around 12 KT from Brevard
southward as the sea breeze develops this afternoon. Winds will then
veer back to S/SW overnight and decrease to around 10KT. Seas are
expected to remain 2-3ft through today and overnight.

&&

.PRELIMINARY POINT TEMPS/POPS...
DAB  92  72  89  72 /  60  40  70  30
MCO  92  74  90  73 /  70  30  70  30
MLB  93  74  90  74 /  50  40  70  30
VRB  94  73  91  73 /  40  30  70  30
LEE  90  75  87  75 /  60  30  70  30
SFB  92  74  90  74 /  70  40  70  30
ORL  92  76  90  75 /  70  30  70  30
FPR  94  72  91  73 /  40  20  70  30

&&

.MLB WATCHES/WARNINGS/ADVISORIES...
FL...None.
AM...None.
&&

Watson/Kelly

Hazardous Weather Outlook
National Weather Service Melbourne FL
1100 AM EDT Sun Jun 13 2021

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-132000-
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-Southern Brevard-Osceola-Indian River-
Okeechobee-St. Lucie-Martin-Coastal Volusia-Southern Lake-Northern
Brevard-
1100 AM EDT Sun Jun 13 2021

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

.THUNDERSTORM IMPACT...
An earlier start to scattered lightning storms today as they move
East around 20 mph across east central Florida from late this
morning through the afternoon. The primary threats in the stronger
storms will be gusty winds up to 50 mph, frequent lightning strikes
and heavy rain. If threatening weather approaches or thunder is
heard, seek shelter in an enclosed building or automobile. Picnic
shelters and porches offer no protection from the dangers of
lightning.

.FLOOD IMPACT...
Storms will be capable of producing torrential downpours of 1 to
2 inches in a 60 to 90 minute period, which may produce ponding or
temporary poor drainage flooding of poorly drained roads, urban
and low lying areas. Flooding is also possible over areas where
training of thunderstorms occur.

.EXCESSIVE HEAT IMPACT...
Peak heat index values between 102 and 104 degrees is forecast over
much of east central Florida. Remember to drink plenty of water and
take frequent breaks from spending time outside for prolonged
periods of time.

.RIP CURRENT IMPACT...
There is a moderate risk for life-threatening rip currents at all
Central Florida Atlantic beaches.

.MARINE THUNDERSTORM GUST IMPACT...
A few stronger storms may produce wind gusts to around 45 knots on
inland lakes, as well as the intracoastal and nearshore Atlantic
waters today. Boaters should watch for storms approaching from the
west.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.
Scattered-to-numerous thunderstorms are forecast each afternoon
and early evening, with the activity increasing in coverage today
into early next week. A few stronger storms will be possible each
day, with cloud-to-ground lightning strikes, gusty winds and
torrential downpours. Offshore moving storms will also pose a
threat for locally higher winds and seas to mariners. A moderate
risk of rip currents will also continue.

.SPOTTER INFORMATION STATEMENT...
Spotters should monitor the weather and self activate is needed.

SK

Special Weather Statement
National Weather Service Melbourne FL
1237 PM EDT Sun Jun 13 2021

FLZ041-141-131715-
Coastal Volusia FL-Inland Volusia FL-
1237 PM EDT Sun Jun 13 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL and EASTERN VOLUSIA
COUNTY UNTIL 115 PM EDT...

At 1235 PM EDT, Doppler radar was tracking a strong thunderstorm
just west of Daytona International Speedway, or 7 miles southwest of
Daytona Beach, moving east at 20 mph. Additional strong storm near
Deland will also move East.

Wind gusts up to 50 mph will be possible with these storms.

Locations impacted include...
Deltona, Daytona Beach, Port Orange, Ormond Beach and DeLand.

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 2927 8099 2909 8090 2890 8076 2894 8135
      2896 8137 2929 8113
TIME...MOT...LOC 1635Z 275DEG 18KT 2915 8112

Kelly

Special Weather Statement
National Weather Service Melbourne FL
104 PM EDT Sun Jun 13 2021

FLZ045-053-131730-
Osceola FL-Orange FL-
104 PM EDT Sun Jun 13 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN ORANGE AND
NORTHWESTERN OSCEOLA COUNTIES UNTIL 130 PM EDT...

At 103 PM EDT, Doppler radar was tracking a strong thunderstorm over
Hunters Creek, or near Celebration, moving east at 20 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Orlando, Kissimmee, Saint Cloud, Buena Ventura Lakes.

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 2828 8158 2846 8156 2850 8122 2823 8123
TIME...MOT...LOC 1703Z 275DEG 17KT 2836 8147

Kelly

Special Weather Statement
National Weather Service Melbourne FL
136 PM EDT Sun Jun 13 2021

FLZ041-141-147-131830-
Coastal Volusia FL-Northern Brevard County FL-Inland Volusia FL-
136 PM EDT Sun Jun 13 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN BREVARD AND SOUTHEASTERN
VOLUSIA COUNTIES UNTIL 230 PM EDT...

At 135 PM EDT, Doppler radar was tracking a strong thunderstorm near
Scottsmoor, moving east at 20 mph. Additional strong storms will
develop over northern Brevard county then push across the
intracoastal and nearshore Atlantic waters where a Special Marine
Warning is in effect.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Titusville, Cocoa, Cape Canaveral, Oak Hill and Port Saint John.

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 2840 8055 2837 8079 2847 8088 2851 8088
      2851 8091 2854 8094 2854 8093 2859 8094
      2861 8097 2883 8100 2897 8081 2876 8066
      2848 8050 2845 8049
TIME...MOT...LOC 1735Z 272DEG 16KT 2874 8091

Kelly

Special Weather Statement
National Weather Service Melbourne FL
151 PM EDT Sun Jun 13 2021

FLZ045-053-147-131830-
Osceola FL-Northern Brevard County FL-Orange FL-
151 PM EDT Sun Jun 13 2021

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL BREVARD...
SOUTHEASTERN ORANGE AND EASTERN OSCEOLA COUNTIES UNTIL 230 PM EDT...

At 151 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Christmas to near Lake Kissimmee. Movement
was east at 10 mph.

Wind gusts up to 50 mph will be possible with these storms.

Locations impacted include...
Wedgefield, Lone Cabbage Fish Camp, Christmas, Lake Kissimmee and
Holopaw.

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 2804 8136 2807 8136 2807 8135 2809 8136
      2861 8108 2862 8096 2839 8083 2771 8115
      2773 8117 2774 8116 2782 8121 2785 8124
      2786 8130 2792 8131 2794 8135 2795 8134
      2800 8140
TIME...MOT...LOC 1751Z 287DEG 10KT 2858 8104 2793 8134

Kelly

PRELIMINARY LOCAL STORM REPORT
National Weather Service Melbourne FL
212 PM EDT SUN JUN 13 2021

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

0200 PM     TSTM WND GST     3 E HAULOVER CANAL      28.74N 80.70W
06/13/2021  M46 MPH          Brevard            FL   MESONET

            MEASURED THUNDERSTORM WIND GUST AT US SPACE FORCE TOWER
            0019 OUT OF THE NNW 40 KNOTS.

&&

JCP

Special Weather Statement
National Weather Service Melbourne FL
217 PM EDT Sun Jun 13 2021

FLZ045-047-053-147-131900-
Southern Brevard County FL-Osceola FL-Northern Brevard County FL-
Orange FL-
217 PM EDT Sun Jun 13 2021

...SIGNIFICANT WEATHER ADVISORY FOR BREVARD...SOUTHEASTERN ORANGE AND
NORTHEASTERN OSCEOLA COUNTIES UNTIL 300 PM EDT...

At 215 PM EDT, Doppler radar was tracking a strong thunderstorm near
Lone Cabbage Fish Camp, moving east at 20 mph. Additional storms
will move East out of eastern Osceola county near Holpaw and
Kenansville across Brevar county and offshore.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Palm Bay, Melbourne, Titusville, Rockledge and Cocoa.

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 2790 8046 2784 8087 2797 8126 2861 8102
      2862 8097 2867 8097 2880 8084 2879 8084
      2879 8079 2882 8081 2882 8070 2864 8058
      2846 8049 2839 8056 2833 8057 2813 8054
      2796 8046
TIME...MOT...LOC 1815Z 262DEG 19KT 2831 8094

Kelly