Alert archive / Florida / Special Weather Statements in 2021
Special Weather Statement, NWS Miami, FL
NWS Miami, FL issued this special weather statement at Sep 21, 2021, 1:21 PM EDT for Collier 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
- Sep 21, 2021, 1:21 PM EDT (17:21 UTC)
- Expired
- Sep 21, 2021, 2:00 PM EDT
- In force
- 39 min
- Issued by
- NWS Miami, FL
- Hail
- 0.00 in
- Wind
- 40
County Collier County, FL
The radar
The Miami radar (KAMX), 155 km from the middle of the area, began a volume at 17:21 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, 5.4 hours before the alert went out and 157 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
- 2184 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 793 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -58 m²/s²
- 0-3 km storm-relative helicity
- -21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
616
WWUS82 KMFL 211721
SPSMFL
Special Weather Statement
National Weather Service Miami FL
121 PM EDT Tue Sep 21 2021
FLZ069-070-211800-
Coastal Collier County FL-Inland Collier County FL-
121 PM EDT Tue Sep 21 2021
...A strong thunderstorm will impact portions of west central Collier
County through 200 PM EDT...
At 121 PM EDT, National Weather Service meteorologists were tracking
a strong thunderstorm capable of producing a funnel cloud over North
Naples, or near Bonita Springs. This storm was nearly stationary.
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...
Naples, Golden Gate Estates, Naples Park, Naples Manor, Golden Gate,
East Naples, Lely Resort, West Toll Gate On Alligator Alley,
Vineyards, North Naples, Pelican Bay, Lely and Quail Creek Estate.
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.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 2633 8185 2633 8182 2632 8182 2632 8167
2608 8161 2607 8181 2627 8185
TIME...MOT...LOC 1721Z 327DEG 2KT 2625 8176
FUNNEL CLOUD...POSSIBLE
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
$$
WeinmanThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 9:52 PM EDT | Areal Flood Advisory | MFL | Palm Beach | 113 min |
| Sep 21, 7:54 AM EDT | Areal Flood Advisory | MFL | Palm Beach | 3 hr |
| Sep 21, 8:43 AM EDT | Areal Flood Advisory | MFL | Palm Beach | 2 hr |
| Sep 21, 9:22 AM EDT | Areal Flood Advisory | MFL | Palm Beach | 93 min |
| Sep 21, 1:10 PM EDT | Areal Flood Advisory | MFL | Collier | 3 hr |
| Sep 21, 1:12 PM EDT | Special Marine Warning | MFL | 63 min | |
| Sep 21, 1:17 PM EDT | Special Marine Warning | MFL | 58 min | |
| Sep 21, 4:17 PM EDT | Special Weather Statement | MFL | Hendry | 43 min |
| Sep 21, 4:58 PM EDT | Areal Flood Advisory | MFL | Broward, Hendry, Palm Beach | 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.