Alert archive / Florida / Special Weather Statements in 2021
Special Weather Statement, NWS Miami, FL
NWS Miami, FL issued this special weather statement at Jul 20, 2021, 1:51 PM EDT for Palm Beach County, Florida. It was in force for 39 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 20, 2021, 1:51 PM EDT (17:51 UTC)
- Expired
- Jul 20, 2021, 2:30 PM EDT
- In force
- 39 min
- Issued by
- NWS Miami, FL
County Palm Beach County, FL
The radar
The Miami radar (KAMX), 131 km from the middle of the area, began a volume at 17:53 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, 5.9 hours before the alert went out and 106 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
- 2142 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 757 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
744
WWUS82 KMFL 201751
SPSMFL
Special Weather Statement
National Weather Service Miami FL
151 PM EDT Tue Jul 20 2021
FLZ067-068-168-201830-
Coastal Palm Beach County FL-Inland Palm Beach County FL-
Metro Palm Beach County FL-
151 PM EDT Tue Jul 20 2021
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN PALM BEACH COUNTY
UNTIL 230 PM EDT...
* At 150 PM EDT, Doppler radar was tracking a strong thunderstorm
over Palm Beach Gardens, moving north at 30 mph.
* Winds in excess of 45 mph possible with this storm.
* Locations impacted include...
West Palm Beach, Boynton Beach, Delray Beach, Wellington, Jupiter,
Palm Beach Gardens, Lake Worth, Riviera Beach, Palm Beach,
Tequesta, Juno Beach, Ocean Ridge, Greenacres, Royal Palm Beach,
Palm Springs, North Palm Beach, Lantana, Lake Park, Atlantis and
Haverhill.
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.
To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Miami on Facebook and
Twitter.
&&
LAT...LON 2641 8003 2666 8035 2696 8029 2696 8014
2697 8014 2697 8003
TIME...MOT...LOC 1750Z 191DEG 26KT 2685 8018
$$
HALLMANThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 12:45 PM EDT | Areal Flood Advisory | MFL | Broward, Palm Beach | 3 hr |
| Jul 20, 2:20 PM EDT | Special Weather Statement | MFL | Miami-Dade | 40 min |
| Jul 20, 3:03 PM EDT | Special Weather Statement | MFL | Hendry | 42 min |
| Jul 20, 4:04 PM EDT | Flash Flood Warning | MFL | Broward | 99 min |
| Jul 20, 4:37 PM EDT | Areal Flood Advisory | MFL | Broward, Palm Beach | 66 min |
| Jul 20, 4:45 PM EDT | Special Weather Statement | MFL | Broward | 45 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.