Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 55, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Aug 3, 2021, 7:06 PM EDT for Broward County, Palm Beach County, Florida. It was in force for 39 min. 4 reports 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, 7:06 PM EDT (23:06 UTC)
- Expired
- Aug 3, 2021, 7:45 PM EDT
- In force
- 39 min
- Issued by
- NWS Miami, FL
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Broward County, FL, Palm Beach County, FL
The radar
The Miami radar (KAMX), 125 km from the middle of the area, began a volume at 23:07 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, 7:29 PM EDT | TSTM WND GST 43 | 4 Wnw Boynton Beach, FL | A THUNDERSTORM PRODUCED A WIND GUST OF 43 MPH AT PARK VISTA COMMUNITY HIGH SCHOOL. |
| Aug 3, 7:38 PM EDT | TSTM WND GST 40 | 2 Ese Haverhill, FL | A THUNDERSTORM PRODUCED A WIND GUST OF 40 MPH AT WEST PALM BEACH INTERNATIONAL AIRPORT. |
| Aug 3, 7:45 PM EDT | TSTM WND GST 40 | 2 Nw West Palm Beach, FL | A THUNDERSTORM PRODUCED A WIND GUST OF 40 MPH AT MESONET STATION DW4888 IN WEST PALM BEACH. |
| Aug 3, 7:47 PM EDT | TSTM WND GST 44 | 2 N Boca Raton, FL | A THUNDERSTORM PRODUCED A WIND GUST OF 44 MPH AT AWOS STATION KBCT IN BOCA RATON. |
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, 11.1 hours before the alert went out and 100 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.
839
WUUS52 KMFL 032306
SVRMFL
FLC011-099-032345-
/O.NEW.KMFL.SV.W.0055.210803T2306Z-210803T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Miami FL
706 PM EDT Tue Aug 3 2021
The National Weather Service in Miami has issued a
* Severe Thunderstorm Warning for...
Northern Broward County in southeastern Florida...
Eastern Palm Beach County in southeastern Florida...
* Until 745 PM EDT.
* At 706 PM EDT, severe thunderstorms were located along a line
extending from near Palm Beach Gardens to near Mission Bay, moving
northeast at 25 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
West Palm Beach, Boca Raton, Deerfield Beach, Boynton Beach and
Delray Beach.
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.
&&
LAT...LON 2631 8003 2631 8042 2690 8037 2696 8019
2696 8014 2697 8014 2697 8003
TIME...MOT...LOC 2306Z 241DEG 20KT 2681 8017 2641 8028
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
$$
SBThe 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, 7:25 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, 7:43 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Miami-Dade | 32 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.