Alert archive / Florida / Tornado Warnings in 2025

Tornado Warning 1, NWS Key West, FL

March 29, 2025Monroe County, Florida

NWS Key West, FL issued this tornado warning at Mar 29, 2025, 3:24 PM EDT for Monroe County, Florida. It was in force for 23 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
Mar 29, 2025, 3:24 PM EDT (19:24 UTC)
Expired
Mar 29, 2025, 3:47 PM EDT
In force
23 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 Key West radar (KBYX), 3 km from the middle of the area, began a volume at 19:27 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

Key West, FL (KNQX), launched 12:00Z, 7.4 hours before the alert went out and 6 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, Key West, FL at 12:00Z on 2025-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 427 joules per kilogram.LCLLFCEL10008507005003002001001 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, Key West, FL at 12:00Z on 2025-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
427 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
713 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
222 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

966 
WFUS52 KKEY 291924
TORKEY
FLC087-292000-
/O.NEW.KKEY.TO.W.0001.250329T1924Z-250329T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Key West FL
324 PM EDT Sat Mar 29 2025

The National Weather Service in Key West has issued a

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

* Until 400 PM EDT.

* At 323 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Geiger Key, or near Big Coppitt Key, moving
  northwest at 15 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...
  Boca Chica, Shark Key, Geiger Key, and Big Coppitt Key around 330 
  PM EDT.

This includes US 1 between mile markers 7 and 13. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to 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.

&&

LAT...LON 2460 8175 2467 8167 2458 8157 2455 8165
TIME...MOT...LOC 1923Z 127DEG 15KT 2455 8159 

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

$$

JAM
1 follow-up statement
360 
WWUS52 KKEY 291947
SVSKEY

Severe Weather Statement
National Weather Service Key West FL
347 PM EDT Sat Mar 29 2025

FLC087-291957-
/O.CAN.KKEY.TO.W.0001.000000T0000Z-250329T2000Z/
Lower Keys in Monroe FL-
347 PM EDT Sat Mar 29 2025

...THE TORNADO WARNING FOR LOWER KEYS IN MONROE COUNTY IS
CANCELLED...

The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

&&

LAT...LON 2460 8175 2467 8167 2458 8157 2455 8165
TIME...MOT...LOC 1946Z 127DEG 15KT 2461 8168 

$$

JAM

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 1:37 PM EDTAreal Flood AdvisoryKEYMonroe3 hr
Mar 29, 3:23 PM EDTSpecial Marine WarningKEY22 min

Nearby

Tornado Warnings in Florida, 2025Every tornado warning in 2025Tornadoes in 2025

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.