Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 56, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Aug 3, 2021, 7:43 PM EDT for Broward County, Miami-Dade County, Florida. It was in force for 32 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 3, 2021, 7:43 PM EDT (23:43 UTC)
- Expired
- Aug 3, 2021, 8:15 PM EDT
- In force
- 32 min
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Broward County, FL, Miami-Dade County, FL
The radar
The Miami radar (KAMX), 53 km from the middle of the area, began a volume at 23:46 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 3, 7:50 PM EDT | TSTM WND GST 40 | 2 Nw Miami, FL | A THUNDERSTORM PRODUCED A WIND GUST OF 40 MPH AT MESONET STATION 0235W NEAR MIAMI. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Miami, FL (KMFL), launched 12:00Z, 11.7 hours before the alert went out and 27 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
- 1794 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 932 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
837
WUUS52 KMFL 032343
SVRMFL
FLC011-086-040015-
/O.NEW.KMFL.SV.W.0056.210803T2343Z-210804T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Miami FL
743 PM EDT Tue Aug 3 2021
The National Weather Service in Miami has issued a
* Severe Thunderstorm Warning for...
Northern Miami-Dade County in southeastern Florida...
Broward County in southeastern Florida...
* Until 815 PM EDT.
* At 743 PM EDT, severe thunderstorms were located along a line
extending from Coconut Creek to Miami Springs, moving east at 20
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Miami, Hialeah, Fort Lauderdale, Pembroke Pines and Hollywood.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
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.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.
&&
LAT...LON 2630 8008 2596 8010 2569 8020 2569 8032
2630 8026
TIME...MOT...LOC 2343Z 257DEG 16KT 2628 8016 2581 8028
HAIL...<.75IN
WIND...60MPH
$$
AR1 follow-up statement
876
WWUS52 KMFL 040006
SVSMFL
Severe Weather Statement
National Weather Service Miami FL
806 PM EDT Tue Aug 3 2021
FLC011-086-040016-
/O.EXP.KMFL.SV.W.0056.000000T0000Z-210804T0015Z/
Miami-Dade FL-Broward FL-
806 PM EDT Tue Aug 3 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN MIAMI-DADE AND
BROWARD COUNTIES WILL EXPIRE AT 815 PM EDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with these thunderstorms.
LAT...LON 2630 8008 2596 8010 2569 8020 2569 8032
2630 8026
TIME...MOT...LOC 0006Z 270DEG 16KT 2627 8006 2580 8018
$$
ARThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 9:55 PM EDT | Special Weather Statement | MFL | Hendry | 50 min |
| Aug 2, 10:48 PM EDT | Special Weather Statement | MFL | Collier | 42 min |
| Aug 3, 8:38 AM EDT | Special Marine Warning | MFL | 25 min | |
| Aug 3, 11:37 AM EDT | Special Weather Statement | MFL | Broward | 38 min |
| Aug 3, 11:43 AM EDT | Special Weather Statement | MFL | Broward | 32 min |
| Aug 3, 12:14 PM EDT | Special Weather Statement | MFL | Broward | 61 min |
| Aug 3, 12:22 PM EDT | Severe Thunderstorm Warning | MFL | Broward | 23 min |
| Aug 3, 12:35 PM EDT | Special Marine Warning | MFL | 40 min | |
| Aug 3, 12:39 PM EDT | Areal Flood Advisory | MFL | Broward | 111 min |
| Aug 3, 1:08 PM EDT | Special Weather Statement | MFL | Palm Beach | 37 min |
| Aug 3, 1:14 PM EDT | Special Marine Warning | MFL | 46 min | |
| Aug 3, 1:40 PM EDT | Special Marine Warning | MFL | 35 min | |
| Aug 3, 1:55 PM EDT | Areal Flood Advisory | MFL | Broward | 2 hr |
| Aug 3, 2:53 PM EDT | Special Weather Statement | MFL | Hendry | 37 min |
| Aug 3, 4:15 PM EDT | Special Weather Statement | MFL | Collier | 60 min |
| Aug 3, 4:36 PM EDT | Areal Flood Advisory | MFL | Collier | 54 min |
| Aug 3, 5:07 PM EDT | Special Weather Statement | MFL | Glades | 38 min |
| Aug 3, 5:10 PM EDT | Special Marine Warning | MFL | 35 min | |
| Aug 3, 5:13 PM EDT | Special Weather Statement | MFL | Collier, Hendry | 47 min |
| Aug 3, 5:56 PM EDT | Special Weather Statement | MFL | Collier | 49 min |
| Aug 3, 6:00 PM EDT | Areal Flood Advisory | MFL | Miami-Dade | 4 hr |
| Aug 3, 6:07 PM EDT | Special Weather Statement | MFL | Broward | 38 min |
| Aug 3, 6:41 PM EDT | Special Weather Statement | MFL | Broward, Palm Beach | 34 min |
| Aug 3, 7:05 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Miami-Dade | 40 min |
| Aug 3, 7:06 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Palm Beach | 39 min |
| Aug 3, 7:25 PM EDT | Areal Flood Advisory | MFL | Broward, Miami-Dade | 2 hr |
| Aug 3, 7:26 PM EDT | Special Marine Warning | MFL | 64 min | |
| Aug 3, 7:37 PM EDT | Areal Flood Advisory | MFL | Broward, Miami-Dade | 113 min |
| Aug 3, 7:50 PM EDT | Areal Flood Advisory | MFL | Palm Beach | 115 min |
| Aug 3, 7:50 PM EDT | Special Weather Statement | MFL | Palm Beach | 40 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.