Alert archive / Florida / Tornado Warnings in 2021

Tornado Warning 2, NWS Key West, FL

July 24, 2021Monroe County, Florida

NWS Key West, FL issued this tornado warning at Jul 24, 2021, 3:01 PM EDT for Monroe County, Florida. It was in force for 14 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 24, 2021, 3:01 PM EDT (19:01 UTC)
Expired
Jul 24, 2021, 3:15 PM EDT
In force
14 min
Issued by
NWS Key West, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Monroe County, FL

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 7.0 hours before the alert went out and 96 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.

Skew-T log-pSkew-T log-p diagram, Miami, FL at 12:00Z on 2021-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 875 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 2021-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
875 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
1024 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

054 
WFUS52 KKEY 241901
TORKEY
FLC087-241915-
/O.NEW.KKEY.TO.W.0002.210724T1901Z-210724T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Key West FL
301 PM EDT Sat Jul 24 2021

The National Weather Service in Key West has issued a

* Tornado Warning for...
  Upper Keys in Monroe County in Florida...

* Until 315 PM EDT..

* At 300 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Plantation, or 11 miles southwest of Key Largo,
  moving southeast at 10 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Key Largo, Plantation, Windley Key and Islamorada. 

This includes US 1 between mile markers 85 and 96. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Waterspouts that move onshore are dangerous and can be deadly. If
threatening weather approaches, SEEK SHELTER IMMEDIATELY!

&&

LAT...LON 2493 8055 2490 8060 2498 8061 2506 8052
      2508 8049 2503 8044
TIME...MOT...LOC 1900Z 332DEG 8KT 2499 8054 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

NB

The office that day

Everything else NWS Key West, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 24, 2:14 PM EDTSpecial Marine WarningKEY31 min
Jul 24, 2:25 PM EDTSpecial Marine WarningKEY65 min
Jul 24, 2:37 PM EDTTornado WarningKEYMonroe23 min
Jul 24, 2:47 PM EDTSpecial Marine WarningKEY15 min
Jul 24, 4:03 PM EDTSpecial Marine WarningKEY45 min

Nearby

Tornado Warnings in Florida, 2021Every tornado warning in 2021Tornadoes 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.