Alert archive / Florida / Special Weather Statements in 2021
Special Weather Statement, NWS Miami, FL
NWS Miami, FL issued this special weather statement at Dec 19, 2021, 3:47 AM EST for Palm Beach County, Florida. It was in force for 28 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
- Dec 19, 2021, 3:47 AM EST (08:47 UTC)
- Expired
- Dec 19, 2021, 4:15 AM EST
- In force
- 28 min
- Issued by
- NWS Miami, FL
- Hail
- 0.00 in
- Wind
- 40
County Palm Beach County, FL
The radar
The Miami radar (KAMX), 105 km from the middle of the area, began a volume at 08:50 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 00:00Z, 8.8 hours before the alert went out and 79 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
- 1194 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 822 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
733
WWUS82 KMFL 190847
SPSMFL
Special Weather Statement
National Weather Service Miami FL
347 AM EST Sun Dec 19 2021
FLZ068-168-190915-
Coastal Palm Beach County FL-Metro Palm Beach County FL-
347 AM EST Sun Dec 19 2021
...A strong thunderstorm will impact portions of southeastern Palm
Beach County through 415 AM EST...
At 346 AM EST, National Weather Service meteorologists were tracking
a strong thunderstorm capable of producing a funnel cloud over Delray
Beach, moving north at 20 mph.
HAZARD...Funnel clouds and winds in excess of 40 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...
West Palm Beach, Boca Raton, Boynton Beach, Delray Beach, Lake Worth,
Palm Beach, Highland Beach, Ocean Ridge, Greenacres, Palm Springs,
Lantana, Atlantis, Haverhill, Cloud Lake, Palm Beach International
Airport, Village Of Golf, Golden Lakes, Gun Club Estates, Royal Palm
Estates and Lake Belvedere Estates.
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.
This activity was also developing in an environment favorable for the
formation of funnel clouds. Stay tuned to NOAA weather radio and
local media for additional updates and possible warnings.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 2635 7998 2638 8018 2672 8017 2667 7987
TIME...MOT...LOC 0846Z 189DEG 19KT 2645 8007
FUNNEL CLOUD...POSSIBLE
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
$$
RAGThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 19, 2:43 AM EST | Special Marine Warning | MFL | 47 min | |
| Dec 19, 2:49 AM EST | Special Weather Statement | MFL | Palm Beach | 41 min |
| Dec 19, 3:29 AM EST | Special Marine Warning | MFL | 46 min | |
| Dec 19, 3:57 AM EST | Areal Flood Advisory | MFL | Palm Beach | 2 hr |
| Dec 19, 4:29 AM EST | Special Marine Warning | MFL | 61 min | |
| Dec 19, 5:58 AM EST | Areal Flood Advisory | MFL | Broward, Palm Beach | 2 hr |
| Dec 19, 6:53 AM EST | Special Weather Statement | MFL | Miami-Dade | 52 min |
| Dec 19, 7:48 AM EST | Special Weather Statement | MFL | Miami-Dade | 42 min |
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.