Alert archive / Florida / Tornado Warnings in 2024

Tornado Warning 2, NWS Key West, FL

February 4, 2024Monroe County, Florida

NWS Key West, FL issued this tornado warning at Feb 4, 2024, 11:17 AM EST for Monroe County, Florida. It was in force for 9 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
Feb 4, 2024, 11:17 AM EST (16:17 UTC)
Expired
Feb 4, 2024, 11:26 AM EST
In force
9 min
Issued by
NWS Key West, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Monroe County, FL

The radar

The Miami radar (KAMX), 35 km from the middle of the area, began a volume at 16:19 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 4, 7:12 AM ESTTornado WatchSPC6 hr

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 4.3 hours before the alert went out and 55 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 2024-02-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 2024-02-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1136 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
194 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

607 
WFUS52 KKEY 041617
TORKEY
FLC087-041645-
/O.NEW.KKEY.TO.W.0002.240204T1617Z-240204T1645Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Key West FL
1117 AM EST Sun Feb 4 2024

The National Weather Service in Key West has issued a

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

* Until 1145 AM EST.
    
* At 1117 AM EST, a severe thunderstorm capable of producing a
  tornado was located over Ocean Reef, or near Turkey Point, moving
  northeast at 45 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.

* This dangerous storm will be near...
  Ocean Reef around 1120 AM EST.

Other locations impacted by this tornadic thunderstorm include North
Key Largo.

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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 2530 8025 2527 8028 2529 8031 2532 8029
      2533 8028 2533 8027 2534 8028 2534 8027
      2535 8027 2535 8026 2534 8025 2533 8026
      2532 8025
TIME...MOT...LOC 1617Z 220DEG 38KT 2532 8026 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

CLR
1 follow-up statement
438 
WWUS52 KKEY 041626
SVSKEY

Severe Weather Statement
National Weather Service Key West FL
1126 AM EST Sun Feb 4 2024

FLC087-041636-
/O.CAN.KKEY.TO.W.0002.000000T0000Z-240204T1645Z/
Upper Keys in Monroe FL-
1126 AM EST Sun Feb 4 2024

...THE TORNADO WARNING FOR UPPER KEYS IN MONROE COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 200 PM EST for Florida.

LAT...LON 2530 8025 2527 8028 2529 8031 2532 8029
      2533 8028 2533 8027 2534 8028 2534 8027
      2535 8027 2535 8026 2534 8025 2533 8026
      2532 8025
TIME...MOT...LOC 1623Z 220DEG 38KT 2540 8019 

$$

CLR

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 3, 10:13 PM ESTGale WatchKEY30 hr
Feb 4, 7:08 AM ESTSpecial Marine WarningKEY67 min
Feb 4, 7:42 AM ESTSpecial Marine WarningKEY33 min
Feb 4, 8:04 AM ESTSpecial Marine WarningKEY33 min
Feb 4, 8:34 AM ESTSpecial Marine WarningKEY56 min
Feb 4, 8:36 AM ESTSpecial Marine WarningKEY24 min
Feb 4, 8:50 AM ESTSevere Thunderstorm WarningKEYMonroe40 min
Feb 4, 9:20 AM ESTSpecial Marine WarningKEY55 min
Feb 4, 9:25 AM ESTSpecial Weather StatementKEY35 min
Feb 4, 9:34 AM ESTTornado WarningKEYMonroe26 min
Feb 4, 9:51 AM ESTSpecial Weather StatementKEY39 min
Feb 4, 10:16 AM ESTSpecial Marine WarningKEY59 min
Feb 4, 10:20 AM ESTSpecial Weather StatementKEY40 min
Feb 4, 10:26 AM ESTSpecial Marine WarningKEY64 min
Feb 4, 10:57 AM ESTSpecial Marine WarningKEY63 min
Feb 4, 11:53 AM ESTSpecial Marine WarningKEY67 min

Nearby

Tornado Warnings in Florida, 2024Every tornado warning in 2024Tornadoes in 2024

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.