Alert archive / Florida / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 26, NWS Miami, FL

April 30, 2023Broward County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Apr 30, 2023, 10:33 AM EDT for Broward County, Florida. It was in force for 5 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 30, 2023, 10:33 AM EDT (14:33 UTC)
Expired: Apr 30, 2023, 10:38 AM EDT
In force: 5 min
Issued by: NWS Miami, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Broward County, FL

The radar

The Miami radar (KAMX), 60 km from the middle of the area, began a volume at 14:33 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 30, 5:03 AM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 2.6 hours before the alert went out and 40 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1671 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 822 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Miami, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 30, 10:20 AM EDT, 13 minutes earlier.

Area forecast discussion, Apr 30, 10:20 AM EDT, 13 minutes before

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Hazardous weather outlook, Apr 30, 5:09 AM EDT, 5 hours 24 minutes before

Hazardous Weather Outlook
National Weather Service Miami FL
509 AM EDT Sun Apr 30 2023

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
010915-
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-
509 AM EDT Sun Apr 30 2023

...Tornado Watch in Effect Through Early This Afternoon...
...High Risk of Rip Currents Gulf Coast Beaches...
...High Wind Advisory for East Coast Locations...

This Hazardous Weather Outlook is for Atlantic, Biscayne Bay, South
Florida, Gulf of Mexico and Lake Okeechobee.

.DAY ONE...Today and tonight.

Thunderstorms: scattered to numerous thunderstorms will be possible
today across South Florida. A severe weather watch is in effect for
all South Florida. The strongest storms could contain damaging wind
gusts, hail, excessive lightning, and a brief tornado.

Tornadoes: a tornado watch is in effect for all South Florida until 2
pm this afternoon.

Rip currents: A high risk of rip currents is in effect for all
beaches of Collier county, and a moderate risk continues over the
east coast beaches.

Wind: a wind advisory is in effect for locations near the east coast
of south Florida. Wind speeds are expected in the 15 to 25 mph range
with gusts up to 40 mph.

Marine: Marine will remain hazardous today across all local waters.
A Small Craft Advisory is in effect through this evening for all
local waters and a Gale Warning will begin this morning through
this evening for outer Atlantic waters. Expect seas 6-8 feet this
morning for Gulf waters and 5-7 feet across Atlantic waters.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No significant hazards are expected for the rest of the week.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report high wind, hail, and
flooding to the National Weather Service forecast office in Miami
while following all local, state, and CDC guidelines.

In the hours before

Special weather statement, Apr 30, 7:13 AM EDT, 3 hours 20 minutes before

Special Weather Statement
National Weather Service Miami FL
713 AM EDT Sun Apr 30 2023

FLZ063-301145-
Glades FL-
713 AM EDT Sun Apr 30 2023

...A strong thunderstorm will impact portions of eastern Glades
County through 745 AM EDT...

At 713 AM EDT, National Weather Service meteorologists were tracking
a strong thunderstorm capable of producing a funnel cloud over
Lakeport, moving east at 45 mph.

HAZARD...Funnel clouds and wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Funnel clouds occasionally touch down and produce tornadoes
         or waterspouts. Gusty winds could knock down tree limbs and
         blow around unsecured objects.

Locations impacted include...
Lakeport, Buckhead Ridge, Brighton Seminole Reservation and Indian
Prairie Canal Mouth.

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.

A Tornado Watch remains in effect until 200 PM EDT for southern
Florida.

&&

LAT...LON 2720 8094 2719 8091 2717 8090 2717 8088
      2714 8087 2720 8083 2718 8080 2713 8079
      2706 8085 2700 8087 2695 8099 2694 8100
      2686 8128 2703 8132 2703 8127 2712 8127
      2712 8117 2721 8117 2721 8094
TIME...MOT...LOC 1113Z 254DEG 38KT 2701 8113

FUNNEL CLOUD...POSSIBLE
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

Kelly

Special weather statement, Apr 30, 7:15 AM EDT, 3 hours 18 minutes before

Special Weather Statement
National Weather Service Miami FL
715 AM EDT Sun Apr 30 2023

FLZ063-066-069-070-301200-
Coastal Collier County FL-Hendry FL-Inland Collier County FL-
Glades FL-
715 AM EDT Sun Apr 30 2023

...A strong thunderstorm will impact portions of northwestern Collier
and western Hendry Counties through 800 AM EDT...

At 715 AM EDT, National Weather Service meteorologists were tracking
a strong thunderstorm capable of producing a funnel cloud over Bonita
Springs, moving east at 45 mph.

HAZARD...Funnel clouds, wind gusts of 50 to 55 mph, and half inch
         hail.

SOURCE...Radar indicated.

IMPACT...Funnel clouds occasionally touch down and produce tornadoes
         or waterspouts. Gusty winds could knock down tree limbs and
         blow around unsecured objects.

Locations impacted include...
Naples, Labelle, Ave Maria, Golden Gate Estates, Immokalee, Naples
Park, Felda, Orangetree, Golden Gate, Port La Belle, Big Corkscrew
Island, Vineyards, North Naples, East Naples, Pelican Bay, Corkscrew
Swamp Sanctuary, Bunker Hill, Quail Creek Estate, Keri and Lake
Trafford.

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.

A Tornado Watch remains in effect until 200 PM EDT for southern and
southwestern Florida.

&&

LAT...LON 2633 8184 2633 8182 2632 8182 2632 8166
      2642 8166 2642 8156 2677 8157 2677 8138
      2633 8125 2612 8184
TIME...MOT...LOC 1115Z 254DEG 38KT 2632 8182

FUNNEL CLOUD...POSSIBLE
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...55 MPH

Kelly

Special weather statement, Apr 30, 8:49 AM EDT, 1 hour 44 minutes before

Special Weather Statement
National Weather Service Miami FL
849 AM EDT Sun Apr 30 2023

FLZ066-067-069>071-073-075-301330-
Inland Broward County FL-Coastal Collier County FL-Hendry FL-
Inland Collier County FL-Mainland Monroe FL-
Inland Palm Beach County FL-Inland Miami-Dade County FL-
849 AM EDT Sun Apr 30 2023

...Strong thunderstorms will impact portions of southeastern Collier,
northern Mainland Monroe, northern Miami-Dade, southeastern Hendry,
Broward and southwestern Palm Beach Counties through 930 AM EDT...

At 849 AM EDT, National Weather Service meteorologists were tracking
strong thunderstorms capable of producing a funnel cloud along a line
extending from near Big Cypress Seminole Reservation to Chokoloskee.
Movement was east at 35 mph.

HAZARD...Funnel clouds, wind gusts of 50 to 55 mph, and penny size
         hail.

SOURCE...Radar indicated.

IMPACT...Funnel clouds occasionally touch down and produce tornadoes
         or waterspouts. Gusty winds could knock down tree limbs and
         blow around unsecured objects.

Locations impacted include...
Chokoloskee, Everglades City, Plantation Island, Carnestown,
Dade-Collier Training Airport, Rotenberger Wildlife Refuge,
Miccosukee Service Plaza, Holey Land Wildlife Refuge, Big Cypress
Seminole Reservation, Intersection Alligator Alley And Miami Canal,
Big Cypress National Preserve, Miccosukee Indian Reservation,
Fortymile Bend, Loxahatchee NWR and West Broward Rec. Area On
Alligator Alley.

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.

A Tornado Watch remains in effect until 200 PM EDT for southern,
southeastern and southwestern Florida.

&&

LAT...LON 2576 8079 2577 8142 2579 8144 2579 8145
      2635 8111 2661 8037
TIME...MOT...LOC 1249Z 262DEG 31KT 2632 8104 2584 8135

FUNNEL CLOUD...POSSIBLE
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...55 MPH

CWC

Special weather statement, Apr 30, 9:30 AM EDT, 1 hour 3 minutes before

Special Weather Statement
National Weather Service Miami FL
930 AM EDT Sun Apr 30 2023

FLZ067-068-070>073-075-174-301415-
Inland Broward County FL-Inland Collier County FL-Mainland Monroe FL-
Metro Broward County FL-Far South Miami-Dade County FL-
Inland Palm Beach County FL-Inland Miami-Dade County FL-
Metro Palm Beach County FL-
930 AM EDT Sun Apr 30 2023

...Strong thunderstorms will impact portions of southeastern Collier,
Mainland Monroe, northern Miami-Dade, Broward and southeastern Palm
Beach Counties through 1015 AM EDT...

At 929 AM EDT, National Weather Service meteorologists were tracking
strong thunderstorms capable of producing a funnel cloud along a line
extending from near Holey Land Wildlife Refuge to Wilderness
Waterway. Movement was east at 35 mph.

HAZARD...Funnel clouds, wind gusts of 50 to 55 mph, and half inch
         hail.

SOURCE...Radar indicated.

IMPACT...Funnel clouds occasionally touch down and produce tornadoes
         or waterspouts. Gusty winds could knock down tree limbs and
         blow around unsecured objects.

Locations impacted include...
Coral Springs, Weston, Parkland, Loop Road Ee Center, Dade-
Collier Training Airport, Shark Valley Obs Tower, Intersection I-
75 And U.S. 27, Pa-Hay-
Okee Overlook, Miccosukee Service Plaza, Wilderness Waterway, Mile
Marker 30 On Alligator Alley, Everglades National Park, Intersection
Alligator Alley And Miami Canal, Fortymile Bend, Miccosukee Indian
Reservation, East Toll Gate On Alligator Alley, Big Cypress National
Preserve, Loxahatchee NWR and West Broward Rec. Area On Alligator
Alley.

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.

A Tornado Watch remains in effect until 200 PM EDT for southeastern
and southwestern Florida.

&&

LAT...LON 2652 8017 2538 8081 2548 8118 2561 8129
      2639 8077
TIME...MOT...LOC 1329Z 284DEG 19KT 2637 8067 2565 8118

FUNNEL CLOUD...POSSIBLE
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...55 MPH

CWC

Special weather statement, Apr 30, 10:00 AM EDT, 33 minutes before

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Special weather statement, Apr 30, 10:14 AM EDT, 19 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 29, 9:27 PM EDT	Special Weather Statement	MFL	Glades	48 min
Apr 29, 10:18 PM EDT	Special Marine Warning	MFL		42 min
Apr 29, 10:49 PM EDT	Special Weather Statement	MFL	Monroe	26 min
Apr 29, 10:57 PM EDT	Special Marine Warning	MFL		33 min
Apr 29, 11:26 PM EDT	Special Weather Statement	MFL	Monroe	34 min
Apr 30, 12:10 AM EDT	Special Weather Statement	MFL	Miami-Dade	35 min
Apr 30, 12:30 AM EDT	Special Weather Statement	MFL	Miami-Dade	45 min
Apr 30, 4:22 AM EDT	Rip Current Statement	MFL	Collier	40 hr
Apr 30, 5:41 AM EDT	Special Marine Warning	MFL		94 min
Apr 30, 6:37 AM EDT	Tornado Warning	MFL	Glades	23 min
Apr 30, 6:51 AM EDT	Special Marine Warning	MFL		54 min
Apr 30, 7:00 AM EDT	Tornado Warning	MFL	Glades	15 min
Apr 30, 7:01 AM EDT	Special Marine Warning	MFL		89 min
Apr 30, 7:13 AM EDT	Special Weather Statement	MFL	Glades	32 min
Apr 30, 7:15 AM EDT	Special Weather Statement	MFL	Collier	45 min
Apr 30, 7:28 AM EDT	Tornado Warning	MFL	Glades	17 min
Apr 30, 7:41 AM EDT	Severe Thunderstorm Warning	MFL	Collier, Glades, Hendry	34 min
Apr 30, 7:45 AM EDT	Special Marine Warning	MFL		60 min
Apr 30, 8:06 AM EDT	Severe Thunderstorm Warning	MFL	Broward, Collier, Glades, Hendry, Palm Beach	24 min
Apr 30, 8:12 AM EDT	Tornado Warning	MFL	Collier, Hendry	17 min
Apr 30, 8:31 AM EDT	Severe Thunderstorm Warning	MFL	Hendry, Palm Beach	44 min
Apr 30, 8:33 AM EDT	Special Marine Warning	MFL		27 min
Apr 30, 8:40 AM EDT	Special Marine Warning	MFL		95 min
Apr 30, 8:49 AM EDT	Special Weather Statement	MFL	Broward	41 min
Apr 30, 9:01 AM EDT	Special Marine Warning	MFL		59 min
Apr 30, 9:11 AM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	49 min
Apr 30, 9:19 AM EDT	Tornado Warning	MFL	Palm Beach	26 min
Apr 30, 9:30 AM EDT	Special Weather Statement	MFL	Broward, Monroe	45 min
Apr 30, 9:31 AM EDT	Tornado Warning	MFL	Palm Beach	28 min
Apr 30, 10:00 AM EDT	Special Weather Statement	MFL	Palm Beach	30 min
Apr 30, 10:01 AM EDT	Special Marine Warning	MFL		59 min
Apr 30, 10:14 AM EDT	Special Weather Statement	MFL	Broward, Miami-Dade	46 min
Apr 30, 10:19 AM EDT	Severe Thunderstorm Warning	MFL	Broward	26 min
Apr 30, 10:36 AM EDT	Special Marine Warning	MFL		54 min
Apr 30, 10:55 AM EDT	Special Marine Warning	MFL		65 min
Apr 30, 10:56 AM EDT	Special Weather Statement	MFL	Broward	34 min
Apr 30, 11:29 AM EDT	Special Marine Warning	MFL		61 min
Apr 30, 11:36 AM EDT	Special Marine Warning	MFL		54 min
Apr 30, 6:13 PM EDT	Small Craft Advisory	MFL		14 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2023 Every severe thunderstorm warning in 2023

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.