Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 47, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Jul 23, 2021, 4:56 PM EDT for 6 counties in Florida. It was in force for 49 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
- Jul 23, 2021, 4:56 PM EDT (20:56 UTC)
- Expired
- Jul 23, 2021, 5:45 PM EDT
- In force
- 49 min
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Broward County, FL, Collier County, FL, Hendry County, FL, Miami-Dade County, FL, Monroe County, FL, Palm Beach County, FL
The nearest sounding before it
Miami, FL (KMFL), launched 12:00Z, 8.9 hours before the alert went out and 73 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.
- Mixed-layer CAPE
- 1775 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 804 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -43 m²/s²
- 0-3 km storm-relative helicity
- -23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
882 WUUS52 KMFL 232056 SVRMFL FLC011-021-051-086-087-099-232145- /O.NEW.KMFL.SV.W.0047.210723T2056Z-210723T2145Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Miami FL 456 PM EDT Fri Jul 23 2021 The National Weather Service in Miami has issued a * Severe Thunderstorm Warning for... Southeastern Collier County in southwestern Florida... North central Mainland Monroe County in southwestern Florida... Northern Miami-Dade County in southeastern Florida... Southeastern Hendry County in southern Florida... Broward County in southeastern Florida... Southwestern Palm Beach County in southeastern Florida... * Until 545 PM EDT. * At 455 PM EDT, a severe thunderstorm was located near Miccosukee Indian Reservation, or 30 miles east of Ave Maria, moving southeast at 15 mph. HAZARD...60 mph wind gusts and nickel size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Big Cypress Seminole Reservation, Intersection Alligator Alley And Miami Canal, Big Cypress National Preserve, Dade-Collier Training Airport and Miccosukee Indian Reservation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into a small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 2632 8121 2640 8064 2583 8050 2579 8111 TIME...MOT...LOC 2055Z 323DEG 13KT 2619 8098 TORNADO...POSSIBLE HAIL...0.88IN WIND...60MPH $$ RAG
2 follow-up statements
951
WWUS52 KMFL 232134
SVSMFL
Severe Weather Statement
National Weather Service Miami FL
534 PM EDT Fri Jul 23 2021
FLC051-087-099-232143-
/O.CAN.KMFL.SV.W.0047.000000T0000Z-210723T2145Z/
Mainland Monroe FL-Hendry FL-Palm Beach FL-
534 PM EDT Fri Jul 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL MAINLAND
MONROE...SOUTHEASTERN HENDRY AND SOUTHWESTERN PALM BEACH COUNTIES IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 2581 8087 2580 8111 2607 8116 2619 8059
2583 8050
TIME...MOT...LOC 2133Z 322DEG 13KT 2605 8073 2595 8101
$$
FLC011-021-086-232145-
/O.CON.KMFL.SV.W.0047.000000T0000Z-210723T2145Z/
Collier FL-Miami-Dade FL-Broward FL-
534 PM EDT Fri Jul 23 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR SOUTHEASTERN COLLIER...NORTHWESTERN MIAMI-DADE AND WESTERN
BROWARD
COUNTIES...
At 533 PM EDT, severe thunderstorms were located along a line
extending from 9 miles southwest of Intersection Alligator Alley And
Miami Canal to near Big Cypress National Preserve, moving southeast
at 15 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Intersection Alligator Alley And Miami Canal, Big Cypress National
Preserve, Dade-Collier Training Airport and West Broward Rec. Area On
Alligator Alley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into a
small central room in a sturdy structure.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Miami. You can also share your report with NWS Miami on Facebook and
Twitter.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 2581 8087 2580 8111 2607 8116 2619 8059
2583 8050
TIME...MOT...LOC 2133Z 322DEG 13KT 2605 8073 2595 8101
TORNADO...POSSIBLE
HAIL...0.88IN
WIND...60MPH
$$
RAG691
WWUS52 KMFL 232141
SVSMFL
Severe Weather Statement
National Weather Service Miami FL
541 PM EDT Fri Jul 23 2021
FLC011-021-086-232151-
/O.EXP.KMFL.SV.W.0047.000000T0000Z-210723T2145Z/
Collier FL-Miami-Dade FL-Broward FL-
541 PM EDT Fri Jul 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN COLLIER...
WESTERN MIAMI-DADE AND WESTERN BROWARD COUNTIES WILL EXPIRE AT 545
PM EDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with these thunderstorms.
LAT...LON 2581 8087 2580 8111 2607 8116 2619 8059
2583 8050
TIME...MOT...LOC 2141Z 323DEG 13KT 2604 8072 2594 8100
$$
RAGThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 8:08 PM EDT | Special Weather Statement | MFL | Glades | 52 min |
| Jul 22, 10:25 PM EDT | Special Weather Statement | MFL | Hendry | 50 min |
| Jul 23, 9:42 AM EDT | Special Marine Warning | MFL | 63 min | |
| Jul 23, 1:33 PM EDT | Special Weather Statement | MFL | Miami-Dade | 42 min |
| Jul 23, 1:33 PM EDT | Special Weather Statement | MFL | Miami-Dade | 42 min |
| Jul 23, 2:14 PM EDT | Special Weather Statement | MFL | Miami-Dade | 31 min |
| Jul 23, 2:57 PM EDT | Special Weather Statement | MFL | Palm Beach | 63 min |
| Jul 23, 3:03 PM EDT | Special Weather Statement | MFL | Collier | 42 min |
| Jul 23, 3:52 PM EDT | Special Weather Statement | MFL | Palm Beach | 68 min |
| Jul 23, 4:16 PM EDT | Areal Flood Advisory | MFL | Palm Beach | 119 min |
| Jul 23, 4:16 PM EDT | Special Weather Statement | MFL | Broward | 59 min |
| Jul 23, 4:29 PM EDT | Special Weather Statement | MFL | Broward | 46 min |
| Jul 23, 4:40 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Palm Beach | 50 min |
| Jul 23, 4:42 PM EDT | Special Marine Warning | MFL | 93 min | |
| Jul 23, 4:53 PM EDT | Special Weather Statement | MFL | Broward | 52 min |
| Jul 23, 5:17 PM EDT | Special Weather Statement | MFL | Broward | 43 min |
| Jul 23, 5:20 PM EDT | Special Weather Statement | MFL | Palm Beach | 55 min |
| Jul 23, 5:23 PM EDT | Special Marine Warning | MFL | 2 hr | |
| Jul 23, 5:24 PM EDT | Special Weather Statement | MFL | Glades | 66 min |
| Jul 23, 5:47 PM EDT | Areal Flood Advisory | MFL | Broward, Palm Beach | 118 min |
| Jul 23, 5:49 PM EDT | Special Weather Statement | MFL | Broward | 41 min |
| Jul 23, 6:03 PM EDT | Special Weather Statement | MFL | Hendry | 42 min |
| Jul 23, 6:12 PM EDT | Special Weather Statement | MFL | Broward | 48 min |
| Jul 23, 6:20 PM EDT | Special Marine Warning | MFL | 55 min | |
| Jul 23, 6:22 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Miami-Dade | 23 min |
| Jul 23, 6:27 PM EDT | Special Weather Statement | MFL | Palm Beach | 48 min |
| Jul 23, 6:29 PM EDT | Special Weather Statement | MFL | Miami-Dade | 46 min |
| Jul 23, 6:57 PM EDT | Special Weather Statement | MFL | Hendry | 48 min |
| Jul 23, 7:06 PM EDT | Special Weather Statement | MFL | Palm Beach | 39 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2021Every severe thunderstorm warning in 2021
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.