Alert archive / Florida / Special Weather Statements in 2021
Special Weather Statement, NWS Miami, FL
NWS Miami, FL issued this special weather statement at Aug 15, 2021, 4:02 PM EDT for Miami-Dade County, Florida. It was in force for 43 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
- Aug 15, 2021, 4:02 PM EDT (20:02 UTC)
- Expired
- Aug 15, 2021, 4:45 PM EDT
- In force
- 43 min
- Issued by
- NWS Miami, FL
- Hail
- 0.00 in
- Wind
- 40
- Spout
- Possible
County Miami-Dade County, FL
The radar
The Miami radar (KAMX), 51 km from the middle of the area, began a volume at 20:05 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 nearest sounding before it
Miami, FL (KMFL), launched 12:00Z, 8.0 hours before the alert went out and 77 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
- 755 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 977 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
177
WWUS82 KMFL 152002
SPSMFL
Special Weather Statement
National Weather Service Miami FL
402 PM EDT Sun Aug 15 2021
FLZ174-152045-
Far South Miami-Dade County FL-
402 PM EDT Sun Aug 15 2021
...A strong thunderstorm will impact portions of southern Miami-Dade
County through 445 PM EDT...
At 400 PM EDT, National Weather Service meteorologists were tracking
a strong thunderstorm capable of producing a waterspout over Florida
Bay, 11 miles west of Key Largo, moving north at 10 mph.
HAZARD...Waterspouts and winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Waterspouts can easily overturn boats and create locally
hazardous waters. Gusty winds could knock down tree limbs
and blow around unsecured objects.
Locations impacted include...
Mahogany Hammock.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Funnel clouds can touch down and produce waterspouts. Although
typically weak and short lived, a landfalling waterspout can cause
property damage and serious injury.
Persons participating in outdoor activities should seek sturdy
shelter until this storm passes. Open shelters found in parks,
beaches, or golf courses offer no protection from the dangers of
lightning.
&&
LAT...LON 2517 8067 2514 8070 2516 8074 2514 8074
2534 8085 2538 8057 2521 8053 2521 8057
2524 8055 2524 8057 2518 8061 2518 8062
2519 8061 2520 8061 2518 8066 2518 8063
2514 8065
TIME...MOT...LOC 2000Z 162DEG 10KT 2512 8061
WATERSPOUT...POSSIBLE
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
$$
Hadi/RAGThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 8:04 PM EDT | Special Marine Warning | MFL | 41 min | |
| Aug 14, 8:06 PM EDT | Special Weather Statement | MFL | Collier | 39 min |
| Aug 14, 8:18 PM EDT | Special Weather Statement | MFL | Monroe | 42 min |
| Aug 14, 8:34 PM EDT | Areal Flood Advisory | MFL | Miami-Dade | 3 hr |
| Aug 14, 8:54 PM EDT | Special Weather Statement | MFL | Monroe | 51 min |
| Aug 14, 8:58 PM EDT | Areal Flood Advisory | MFL | Collier | 3 hr |
| Aug 14, 9:02 PM EDT | Special Weather Statement | MFL | Miami-Dade | 43 min |
| Aug 14, 9:03 PM EDT | Special Marine Warning | MFL | 42 min | |
| Aug 14, 9:30 PM EDT | Special Marine Warning | MFL | 45 min | |
| Aug 14, 9:39 PM EDT | Special Weather Statement | MFL | Broward, Collier | 51 min |
| Aug 14, 9:42 PM EDT | Special Marine Warning | MFL | 63 min | |
| Aug 14, 9:51 PM EDT | Special Weather Statement | MFL | Miami-Dade | 39 min |
| Aug 14, 9:58 PM EDT | Special Marine Warning | MFL | 32 min | |
| Aug 14, 10:07 PM EDT | Special Marine Warning | MFL | 38 min | |
| Aug 14, 10:26 PM EDT | Special Weather Statement | MFL | Hendry, Palm Beach | 49 min |
| Aug 14, 11:22 PM EDT | Special Weather Statement | MFL | Glades | 38 min |
| Aug 14, 11:38 PM EDT | Special Marine Warning | MFL | 52 min | |
| Aug 15, 1:13 AM EDT | Special Marine Warning | MFL | 47 min | |
| Aug 15, 1:16 AM EDT | Special Marine Warning | MFL | 44 min | |
| Aug 15, 1:17 AM EDT | Special Weather Statement | MFL | Miami-Dade | 28 min |
| Aug 15, 1:19 AM EDT | Special Marine Warning | MFL | 56 min | |
| Aug 15, 1:21 AM EDT | Special Weather Statement | MFL | Miami-Dade | 39 min |
| Aug 15, 1:49 AM EDT | Special Weather Statement | MFL | Miami-Dade | 41 min |
| Aug 15, 3:06 AM EDT | Special Weather Statement | MFL | Collier | 24 min |
| Aug 15, 4:29 AM EDT | Special Marine Warning | MFL | 46 min | |
| Aug 15, 7:26 AM EDT | Special Weather Statement | MFL | Miami-Dade | 34 min |
| Aug 15, 3:35 PM EDT | Special Marine Warning | MFL | 55 min | |
| Aug 15, 4:25 PM EDT | Special Marine Warning | MFL | 65 min | |
| Aug 15, 5:10 PM EDT | Special Weather Statement | MFL | Miami-Dade | 50 min |
| Aug 15, 5:25 PM EDT | Special Marine Warning | MFL | 65 min | |
| Aug 15, 6:34 PM EDT | Special Marine Warning | MFL | 56 min | |
| Aug 15, 7:28 PM EDT | Special Marine Warning | MFL | 2 hr |
Nearby
Special Weather Statements in Florida, 2021Every special weather statement 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; radar from the NEXRAD Level II archive.