Severe Thunderstorm Warning 87, NWS Melbourne, FL

Area Forecast Discussion
National Weather Service Melbourne FL
315 PM EDT Fri Jun 27 2025

...New KEY MESSAGES, DISCUSSION, MARINE...

.KEY MESSAGES...
Issued at 315 PM EDT Fri Jun 27 2025

- An active weather pattern persists into next week, with a
  Marginal Risk (1/5) for severe weather today.

- Hot temperatures and increasing humidity will lead to peak heat
  indices 100 to 105 degrees. Proper precautions should be taken
  to prevent heat-related illnesses. Look before you lock!

- Moderate risk of rip currents continues at area beaches through
  the weekend.

&&

.DISCUSSION...
Issued at 315 PM EDT Fri Jun 27 2025

Current-Tonight...Convection has developed along much of the east
central Florida coast this afternoon, with outflow boundaries from
the convection helping to propagate further development inland.
This is forecast to continue over the next several hours, with
increasing coverage of showers and storms anticipated across the
interior. While storms have so far remained sub-severe, the area
does continue to remain under a Marginal Risk (1/5) for severe
weather. The 15Z XMR sounding showed MLCAPE up to 2000 J/kg and
modest low-level lapse rates (7.1 C/km), with prevailing southwest
steering flow winds. Gusty winds and lightning continue to be the
primary concerns, with small hail possible in stronger storms.
Shear and SRH remains unfavorable, though brief funnel cloud or
tornado development cannot be ruled out along boundary collisions.
Activity is forecast to diminish into the overnight hours, with
ongoing activity anticipated across the offshore waters. Lows
overnight in the low to mid 70s.

This Weekend...An active summertime weather pattern is forecast to
persist across east central Florida through the weekend. The
Atlantic ridge extends westward towards the peninsula, remaining
draped across central Florida. Prevailing south-southwest flow will
continue to bring moisture northward across the peninsula, with
PWATs up to 2 inches possible locally. The east coast sea breeze is
forecast to develop each afternoon, struggling to move inland due to
west-southwest winds aloft. Showers and storms are anticipated to
develop along the sea breeze, with an eventual sea breeze collision
across the eastern half of Florida coinciding with the greatest
coverage each day. 500 mb temperatures remain around -8 to -7C, with
modest low-level lapse rates continuing to help support convective
development. Storm threats continue to be lightning strikes, gusty
winds up to 50 mph, small hail, and heavy downpours. Minor flooding
in some spots may be possible, particularly where showers and storms
have little movement and in places that have received sufficient
rainfall from previous days. Any activity that develops is forecast
to diminish into the overnight hours, with showers and storms
continuing across the local Atlantic waters. Outside of convection,
temperatures reach the low 90s on Saturday, and the upper 80s to low
90s on Sunday. Peak heat indices are forecast to reach 100 to 103 on
Saturday, remaining in the upper 90s on Sunday. Lows stay near
normal in the low to mid 70s.

Next Week (previous modified)...The Atlantic ridge axis remains
draped over the local area early next week, then is forecast to
drift southward through late week. Meanwhile, the second upper level
low meanders around the Florida peninsula and the eastern Gulf. A
summer-time pattern will, therefore, continue, with south to
southwesterly winds supporting a continued collision over the
forecast area. High coverage of afternoon/evening showers and storms
is expected to continue through the holiday and towards the end of
the week, with PoPs 60-70% each day. Heat will remain a concern due
to humid conditions and heat indices 100-105 degrees. Residents and
visitors should continue to use caution if spending prolonged
periods outside.

&&

.MARINE...
Issued at 315 PM EDT Fri Jun 27 2025

The Atlantic high is forecast to remain generally in place,
resulting in favorable boating conditions across the local
Atlantic waters outside of convection. Southwesterly winds remain
below 15 knots each day, becoming more southeasterly each
afternoon along the coast as the east coast sea breeze develops
and attempts to move inland. Seas stay between 1 to 3 feet through
the weekend and into next week. The persistent southwest flow will
lead to offshore-moving showers and storms developing in the
afternoons along the sea breeze, with ongoing activity forecast
across the offshore waters during the overnight hours. Any storms
that develop may be capable of producing frequent lightning
strikes, wind gusts in excess of 34 knots, small hail, and heavy
downpours.

.AVIATION...
(18Z TAFs)
Issued at 135 PM EDT Fri Jun 27 2025

Convection has fired off along the coast, with TEMPOs in effect
through 20Z for reduced VIS and CIGs due to TSRA. Coverage of
showers and storms are forecast to to increase across the interior
through the remainder of this afternoon, with TEMPOs across the
interior terminals from 18 to 24Z. Activity is forecast to
diminish after 02Z across the area. Winds become light and
variable to calm overnight, picking back up out of the SW after
15Z across the interior terminals and DAB. From TIX southward, the
east coast sea breeze slowly develops, with winds becoming more
onshore from 15Z and beyond. VCTS possible along the sea breeze as
it develops, with increasing coverage forecast across the interior
once again in the afternoon.

&&

.PRELIMINARY POINT TEMPS/POPS...
DAB  73  91  73  89 /  30  70  50  70
MCO  74  93  74  90 /  50  70  50  70
MLB  75  90  74  88 /  40  60  50  70
VRB  72  91  71  89 /  30  60  40  70
LEE  74  92  75  89 /  30  70  40  70
SFB  74  93  74  91 /  40  70  50  70
ORL  75  93  75  90 /  50  70  50  70
FPR  71  90  71  88 /  30  60  40  70

&&

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

DISCUSSION...Tollefsen
AVIATION...Tollefsen

Special Weather Statement
National Weather Service Melbourne FL
133 PM EDT Fri Jun 27 2025

FLZ154-254-271815-
Inland Indian River FL-Coastal Indian River FL-
133 PM EDT Fri Jun 27 2025

...A STRONG THUNDERSTORM WILL IMPACT EASTERN INDIAN RIVER COUNTY
THROUGH 215 PM EDT...

At 132 PM EDT, Doppler radar was tracking a strong thunderstorm over
Winter Beach, moving northeast at 5 mph.

HAZARD...Wind gusts up to 50 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Sebastian, Vero Beach, Fellsmere, Indian River Shores, and Vero Beach
South.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Conditions are favorable for the development of brief funnel clouds.
If a funnel cloud is spotted move indoors and report your sighting
to the National Weather Service.

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 hard-topped vehicle. Remember, when
thunder roars, go indoors!

&&

LAT...LON 2759 8054 2774 8061 2785 8041 2761 8031
TIME...MOT...LOC 1732Z 245DEG 4KT 2770 8045

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

Schaper

Special Weather Statement
National Weather Service Melbourne FL
204 PM EDT Fri Jun 27 2025

FLZ154-159-259-271830-
Coastal St. Lucie FL-Inland St. Lucie FL-Coastal Indian River FL-
204 PM EDT Fri Jun 27 2025

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN ST. LUCIE AND
SOUTHEASTERN INDIAN RIVER COUNTIES THROUGH 230 PM EDT...

At 204 PM EDT, Doppler radar was tracking a strong thunderstorm over
Lakewood Park, or near Indrio. This thunderstorm was nearly
stationary.

HAZARD...Wind gusts 40 to 50 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Fort Pierce, Indrio, Fort Pierce Inlet, Vero Beach South, and Queens
Cove.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 hard-topped vehicle. Remember, when
thunder roars, go indoors!

&&

LAT...LON 2743 8026 2741 8049 2756 8053 2756 8048
      2757 8049 2759 8050 2762 8031
TIME...MOT...LOC 1804Z 286DEG 3KT 2753 8041

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

Schaper

Preliminary Local Storm Report
National Weather Service Melbourne FL
239 PM EDT Fri Jun 27 2025

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

0125 PM     Tstm Wnd Gst     5 S Kennedy Space Cente 28.52N 80.64W
06/27/2025  M45 MPH          Brevard            FL   Mesonet

            USSF wind sensor on tower 506 measured a
            peak wind gust of 45MPH/39KT from the
            southeast at 1:25 PM. Earlier, a gust to
            40MPH/35KT occurred at 1:15 PM. Sensor
            elevation is 54 feet.

&&

DKW

Special Weather Statement
National Weather Service Melbourne FL
345 PM EDT Fri Jun 27 2025

FLZ045-053-144-272030-
Osceola FL-Orange FL-Southern Lake County FL-
345 PM EDT Fri Jun 27 2025

...STRONG THUNDERSTORMS WILL IMPACT SOUTHERN LAKE...SOUTHWESTERN
ORANGE AND NORTHWESTERN OSCEOLA COUNTIES THROUGH 430 PM EDT...

At 344 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Auburndale to near Haines City to 11 miles
northeast of Lake Wales to 6 miles southwest of Lake Kissimmee.
Movement was northeast at 30 mph.

HAZARD...Wind gusts up to 50 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Orlando, Kissimmee, Saint Cloud, Bay Lake, and Celebration.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 hard-topped vehicle. Remember, when
thunder roars, go indoors!

&&

LAT...LON 2845 8176 2845 8142 2833 8115 2799 8107
      2786 8130 2794 8135 2795 8134 2804 8146
      2806 8146 2801 8138 2808 8135 2809 8145
      2814 8146 2814 8152 2820 8152 2826 8156
      2826 8166 2835 8166 2835 8179
TIME...MOT...LOC 1944Z 212DEG 28KT 2810 8183 2809 8166 2799 8143 2786
8136

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

Schaper