Severe Thunderstorm Warning 23, NWS Miami, FL

Area Forecast Discussion...UPDATED
National Weather Service Miami FL
147 PM EDT Mon Apr 4 2022

.AVIATION(18Z TAFS)...

Showers and storms continue to develop along stalled frontal
boundary. Sea breezes and outflow boundaries will allow for
additional development. VCTS this afternoon for all terminals.
Periods of MVFR or even IFR are possible in and around showers and
thunderstorms and will be handled with amendments and TEMPOs. At
KAPF, winds will shift around to the southwest in the afternoon as a
Gulf breeze develops. Light winds overnight. Breezy at times gusty
southerly winds tomorrow, with lower overall convective coverage.

&&

.PREV DISCUSSION... (Issued 916 AM EDT Mon Apr 4 2022)

UPDATE...
A few showers and storms along the east coast or just offshore so
far this morning. Bulk of activity has been near Palm Beach County
and to the south over the upper keys. Hi-res model guidance
continues to be very variable this morning with how much
development occurs over the east coast before the seabreeze
develops this afternoon, as well as location of just onshore or
offshore. However, the potential for streaming showers to effect
a localized area remain possible. With high rainfall rates, these
streamers could produce locally heavy rainfall that may lead to
flooding. Therefore, the Weather Prediction center continues to
have a Marginal risk of excessive rainfall for the east coast.

A frontal boundary remains across the region with an unsettled
weather pattern once again this afternoon. The 12Z MFL sounding
shows that the atmosphere is conducive for the potential of strong
to severe storms this afternoon. Mid-level lapse rates around
6.5-7C/km, 500mb temps around -12C along with 20-30 knots of bulk
shear will allow for upward growth of storms. Scattered showers
and storms will form along the frontal boundary and the sea
breezes this afternoon. Given the favorable parameters, the Storm
Prediction Center has placed most of South Florida in a marginal
risk for severe weather. Main hazards will be strong to damaging
winds, hail up to 1 inch, and heavy downpours. Can not rule out an
isolated tornado along boundary or sea breeze interactions.

A few adjustments in the forecast to account for latest radar
trends and current observations.

PREV DISCUSSION... (Issued 741 AM EDT Mon Apr 4 2022)

AVIATION(12Z TAFS)...
Mainly VFR conditions to start the taf period. Winds will
increase out of the east southeast by mid-morning. Hi-res models
are having trouble depicting location of convection this morning
and afternoon. For now carrying VCSH then VCTS later this morning
and afternoon. Periods of MVFR or even IFR are possible in and
around showers and thunderstorms and will be handled with
amendments and TEMPOs. At KAPF, winds will shift around to the
southwest in the afternoon as a Gulf breeze develops. Light winds
overnight.

PREV DISCUSSION... (Issued 317 AM EDT Mon Apr 4 2022)

SHORT TERM (Today through Tuesday)...

Latest sfc analyses and model data keep a semi-stationary,
decaying front just off the southern tip of the Florida peninsula
and into the Florida Keys today. Meanwhile, model consensus
depicts high pressure building over the SE CONUS, Which will
influence our synoptic flow and veer it more to the SE today.

With this synoptic scenario in place, expect still abundant
moisture to linger over SoFlo, and combine with daytime
heating/sea breeze boundaries for another round of scattered to
numerous showers and thunderstorms. Better chances for the east
coast metro areas will be in the morning, then shifting over the
interior and west coast areas in the afternoon. Latest model
sounding data still depict 500 mb temps in the -11 to -12 degrees
celsius, which will support vertical development of a few strong
cells, especially this afternoon. SPC latest outlook places most
of the area again in the marginal level for risk of severe
weather. Main hazards will be gusty winds, hail, and heavy
downpours.

Models also show the remnants of the front finally moving away
from the area late Tuesday, as a trough pushes across the SE
CONUS. This will briefly lower POPs across SoFlo with coverage
mainly isolated. It will also enhance the southerly flow across
the area, with breezy periods expected in the afternoon.

Warm temps continue each day with daytime highs in the low-mid
80s near the coast, and in the upper 70s inland.

LONG TERM (Wednesday through Sunday)...

Models show prevailing zonal flow aloft on Wednesday, while
enough remnant moisture lingers across SoFlo. This should be
enough for a few afternoon showers to develop. Meanwhile, a mid
level trough is shown on latest long range solutions moving
eastward across the E CONUS, with an associated sfc front pushing
into the east GOMEX and the west coast of Florida. The convection
ahead of this front will bring another round of increasing
showers/t-storms on Thursday. Models show fair agreement in
pushing this front across the state, with a cooling trend in its
wake beginning Friday night and through the weekend. The situation
will continue to be closely monitored, and the forecast will
continue to be adjusted accordingly.

MARINE...

Winds will gradually shift to a more easterly flow today and
increase into the 10 to 15 kt range as the remnants of a front
dissipate over the southern waters. Potential for thunderstorms
remain in place during the next couple of days, with Brief periods
of rough seas and gusty winds will accompany any storm that
forms. High pressure shifting well east of Florida turn winds to
the southwest during the latter part of the week ahead of another
cold front moving into Florida. Seas will be generally 3 feet or
less outside of showers and thunderstorms, building slightly
Thursday as SW winds increase some.

BEACHES...

The threat of rip currents will increase to moderate today for all
the Atlantic beaches as easterly flow re-establishes. But it
should be short-lived as the threat decreases for the east coast
metro areas as the winds become more southerly for the middle to
end of this week.

&&

.PRELIMINARY POINT TEMPS/POPS...
Miami            73  86  76  88 /  40  20  10  20
West Kendall     71  87  74  91 /  30  20  10  20
Opa-Locka        72  87  75  89 /  40  20  10  20
Homestead        72  85  75  88 /  30  20  10  20
Fort Lauderdale  72  85  76  88 /  40  20  10  20
N Ft Lauderdale  71  84  75  87 /  40  30  10  30
Pembroke Pines   71  86  74  88 /  40  20  10  20
West Palm Beach  70  84  73  88 /  40  40  10  40
Boca Raton       71  84  74  87 /  40  30  10  30
Naples           71  88  76  89 /  20  10  10  10

&&

.MFL WATCHES/WARNINGS/ADVISORIES...
FL...None.
AM...None.
GM...None.
&&

Update/Aviation...Kelly

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Hazardous Weather Outlook for South Florida
National Weather Service Miami FL
938 AM EDT Mon Apr 4 2022

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
050745-
Lake Okeechobee-Biscayne Bay-
Coastal waters from Jupiter Inlet to Deerfield Beach FL out 20 NM-
Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM-
Waters from Jupiter Inlet to Deerfield Beach FL from 20 to 60 NM-
Waters from Deerfield Beach to Ocean Reef FL from 20 to 60 NM
excluding the territorial waters of Bahamas-Glades-Hendry-
Inland Palm Beach-Metro Palm Beach-Coastal Collier-Inland Collier-
Inland Broward-Metro Broward-Inland Miami-Dade-Metro Miami-Dade-
Mainland Monroe-Coastal Palm Beach-Coastal Broward-Coastal Miami-
Dade-Far South Miami-Dade-
Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM-
Coastal waters from East Cape Sable to Chokoloskee FL out 20 NM-
Waters from Chokoloskee to Bonita Beach FL from 20 to 60 NM-
938 AM EDT Mon Apr 4 2022

...Marginal Risk for Severe Storms Today...
...Localized Flooding Possible...

This hazardous weather outlook is for South Florida.

.DAY ONE...TODAY AND TONIGHT

Thunderstorms: Isolated to scattered showers and thunderstorms will
be possible today. Strong to Severe storms will be possible.
Strongest activity may produce strong to damaging winds, hail, and
locally heavy rainfall.

Hail: The strongest thunderstorms could contain hail up to the size
of quarters.

Wind: The strongest thunderstorms could contain wind gusts of greater
than 58 mph.

Tornadoes: An isolated tornado is possible with any of the strongest
storms.

Flooding: Heavy downpours from thunderstorms could lead to localized
flooding.

Waterspouts: A few waterspouts will be possible in association with
showers and thunderstorms across the local waters and Lake Okeechobee.

Rip Currents: A moderate risk of rip currents at Atlantic Beaches

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

Shower and thunderstorm chances will begin decreasing on Tuesday, with
a little drier conditions establishing by Wednesday. Then another front
approaches the area in the Thursday/Friday timeframe, and brings
increasing chances for showers and thunderstorms.

.SPOTTER INFORMATION STATEMENT...

Widespread spotter activation is not anticipated, however,
individual spotters are encouraged to report high winds, hail, and
flooding to the National Weather Service Forecast Office in Miami.

For more information...visit the National Weather Service in
Miami website at www.weather.gov/miami.

Special Weather Statement
National Weather Service Miami FL
146 PM EDT Mon Apr 4 2022

FLZ067-068-071-072-168-172-041815-
Inland Broward County FL-Coastal Broward County FL-
Coastal Palm Beach County FL-Metro Broward County FL-
Inland Palm Beach County FL-Metro Palm Beach County FL-
146 PM EDT Mon Apr 4 2022

...A strong thunderstorm will impact portions of northern Broward and
southeastern Palm Beach Counties through 215 PM EDT...

At 146 PM EDT, National Weather Service meteorologists were tracking
a strong thunderstorm over Godfrey Road, or over Coral Springs,
moving northeast at 20 mph.

HAZARD...Winds in excess of 30 mph and pea size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Fort Lauderdale, Coral Springs, Pompano Beach, Plantation, Sunrise,
Boca Raton, Deerfield Beach, Delray Beach, Tamarac, Margate,
Lighthouse Point, Highland Beach, Lauderhill, Coconut Creek, Oakland
Park, North Lauderdale, Lauderdale Lakes, Parkland, Hillsboro Beach
and Mission Bay.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These winds can down small tree limbs and branches, and blow around
unsecured small objects. Seek shelter in a safe building until the
storm passes.

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 2614 8021 2612 8030 2616 8037 2653 8025
      2638 7998
TIME...MOT...LOC 1746Z 227DEG 17KT 2628 8024

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...30 MPH

SB

Special Weather Statement
National Weather Service Miami FL
212 PM EDT Mon Apr 4 2022

FLZ073-173-174-041915-
Far South Miami-Dade County FL-Inland Miami-Dade County FL-
Coastal Miami Dade County FL-
212 PM EDT Mon Apr 4 2022

...Strong thunderstorms will impact portions of southern Miami-Dade
County through 315 PM EDT...

At 212 PM EDT, National Weather Service meteorologists were tracking
strong thunderstorms along a line extending from Turkey Point to near
Royal Palm Ranger to near Pa-Hay-
Okee Overlook. Movement was northeast at 10 mph.

HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Homestead, Homestead Miami Speedway, Black Point, Homestead General
Airport, The Redland, Florida City, Homestead Base, Naranja,
Princeton, Royal Palm Ranger, Leisure City, Goulds, Homestead
Bayfront Park and Everglades National Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These winds can down small tree limbs and branches, and blow around
unsecured small objects. Seek shelter in a safe building until the
storm passes.

Funnel clouds occasionally touch down and produce tornadoes or
waterspouts. Move indoors and stay away from windows.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Miami. You can also share your report with NWS Miami on
Facebook and Twitter.

&&

LAT...LON 2554 8027 2558 8047 2560 8064 2540 8080
      2530 8061 2531 8036
TIME...MOT...LOC 1812Z 234DEG 7KT 2539 8034 2538 8056 2546 8076

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH

Baxter

Special Weather Statement
National Weather Service Miami FL
225 PM EDT Mon Apr 4 2022

FLZ066-067-041900-
Hendry FL-Inland Palm Beach County FL-
225 PM EDT Mon Apr 4 2022

...A strong thunderstorm will impact portions of northeastern Hendry
and west central Palm Beach Counties through 300 PM EDT...

At 225 PM EDT, National Weather Service meteorologists were tracking
a strong thunderstorm 10 miles southwest of Lake Harbor, moving east
at 10 mph.

HAZARD...Winds in excess of 40 mph and nickel size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Belle Glade, Clewiston, South Bay, Lake Harbor, Okeelanta, Belle
Glade Camp and Harlem.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 2649 8096 2668 8108 2676 8093 2678 8067
      2649 8063
TIME...MOT...LOC 1825Z 260DEG 7KT 2660 8094

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

SB

Special Weather Statement
National Weather Service Miami FL
244 PM EDT Mon Apr 4 2022

FLZ069-070-073-075-174-041945-
Coastal Collier County FL-Inland Collier County FL-
Mainland Monroe FL-Far South Miami-Dade County FL-Inland Miami-
Dade County FL-
244 PM EDT Mon Apr 4 2022

...Strong thunderstorms will impact portions of southeastern Collier,
Mainland Monroe and central Miami-Dade Counties through 345 PM EDT...

At 242 PM EDT, National Weather Service meteorologists were tracking
a developing line of strong thunderstorms from 8 miles north of
Copeland to 10 miles southwest of Big Cypress National Preserve to 9
miles northwest of Everglades National Park to Pa-Hay-Okee Overlook.
Movement was east northeast at 5 to 10 mph.

HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Chokoloskee, Everglades City, Plantation Island, Loop Road Ee Center,
Carnestown, Pa-Hay-
Okee Overlook, Copeland, Wilderness Waterway, Everglades National
Park, Big Cypress National Preserve, Fakahatchee Strand State
Preserve, Jerome and Deep Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These winds can down small tree limbs and branches, and blow around
unsecured small objects. Seek shelter in a safe building until the
storm passes.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Miami. You can also share your report with NWS Miami on
Facebook and Twitter.

&&

LAT...LON 2615 8118 2586 8094 2559 8074 2553 8068
      2532 8075 2550 8115 2581 8139 2614 8148
TIME...MOT...LOC 1842Z 265DEG 10KT 2608 8135 2585 8118 2555 8101 2544
8077

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH

Baxter

Special Weather Statement
National Weather Service Miami FL
300 PM EDT Mon Apr 4 2022

FLZ066-067-041930-
Hendry FL-Inland Palm Beach County FL-
300 PM EDT Mon Apr 4 2022

...A strong thunderstorm will impact portions of east central Hendry
and west central Palm Beach Counties through 330 PM EDT...

At 300 PM EDT, National Weather Service meteorologists were tracking
a strong thunderstorm over Lake Harbor, moving east at 5 mph.

HAZARD...Winds in excess of 40 mph and nickel size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Belle Glade, Pahokee, South Bay, Lake Harbor, Okeelanta, Belle Glade
Camp and Fremd Village-Padgett Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These winds can down small tree limbs and branches, and blow around
unsecured small objects. Seek shelter in a safe building until the
storm passes.

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

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 2649 8088 2657 8099 2669 8100 2676 8087
      2683 8067 2653 8055
TIME...MOT...LOC 1900Z 252DEG 6KT 2666 8079

LIGHTNING...EXCESSIVE
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

SB

Special Weather Statement
National Weather Service Miami FL
310 PM EDT Mon Apr 4 2022

FLZ063-066-041945-
Hendry FL-Glades FL-
310 PM EDT Mon Apr 4 2022

...A strong thunderstorm will impact portions of northwestern Hendry
and southwestern Glades Counties through 345 PM EDT...

At 310 PM EDT, National Weather Service meteorologists were tracking
a strong thunderstorm over Muse, or near Labelle, moving east at 10
mph.

HAZARD...Winds in excess of 40 mph and nickel size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Labelle, Palmdale, Port La Belle, Ortona and Muse.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These winds can down small tree limbs and branches, and blow around
unsecured small objects. Seek shelter in a safe building until the
storm passes.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 2703 8130 2674 8122 2670 8155 2675 8157
      2689 8156 2703 8133
TIME...MOT...LOC 1910Z 260DEG 10KT 2681 8149

LIGHTNING...EXCESSIVE
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

SB