Alert archive / Florida / Tornado Warnings in 2022

Tornado Warning 3, NWS Key West, FL

September 27, 2022Monroe County, Florida

NWS Key West, FL issued this tornado warning at Sep 27, 2022, 6:44 AM EDT for Monroe County, Florida. It was in force for 31 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 27, 2022, 6:44 AM EDT (10:44 UTC)
Expired
Sep 27, 2022, 7:15 AM EDT
In force
31 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), 73 km from the middle of the area, began a volume at 10:47 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 00:00Z, 10.7 hours before the alert went out and 99 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 00:00Z on 2022-09-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 211 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, Miami, FL at 00:00Z on 2022-09-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 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
211 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
897 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
128 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

347 
WFUS52 KKEY 271044
TORKEY
FLC087-271115-
/O.NEW.KKEY.TO.W.0003.220927T1044Z-220927T1115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Key West FL
644 AM EDT Tue Sep 27 2022

The National Weather Service in Key West has issued a

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

* Until 715 AM EDT.
    
* At 643 AM EDT, a severe thunderstorm capable of producing a 
  tornado was located over Plantation Key, or 13 miles southwest of 
  Key Largo, moving northwest at 25 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 includes US 1 between mile markers 85 and 93. 

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.

&&

LAT...LON 2493 8055 2491 8058 2496 8063 2506 8052
      2499 8048
TIME...MOT...LOC 1043Z 149DEG 20KT 2496 8056 

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

$$

JAM
1 follow-up statement
681 
WWUS52 KKEY 271105
SVSKEY

Severe Weather Statement
National Weather Service Key West FL
705 AM EDT Tue Sep 27 2022

FLC087-271115-
/O.EXP.KKEY.TO.W.0003.000000T0000Z-220927T1115Z/
Upper Keys in Monroe FL-
705 AM EDT Tue Sep 27 2022

...THE TORNADO WARNING FOR UPPER KEYS IN MONROE COUNTY WILL EXPIRE AT
715 AM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

LAT...LON 2493 8055 2491 8058 2496 8063 2506 8052
      2499 8048
TIME...MOT...LOC 1105Z 149DEG 20KT 2504 8061 

$$

TW

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 26, 8:55 PM EDTFlood WatchKEYMonroe32 hr
Sep 26, 9:47 PM EDTAreal Flood AdvisoryKEYMonroe3 hr
Sep 26, 10:50 PM EDTSpecial Weather StatementKEY25 min
Sep 27, 12:23 AM EDTSpecial Marine WarningKEY37 min
Sep 27, 12:27 AM EDTTornado WarningKEYMonroe20 min
Sep 27, 1:32 AM EDTSpecial Marine WarningKEY28 min
Sep 27, 1:56 AM EDTSpecial Marine WarningKEY34 min
Sep 27, 2:02 AM EDTSpecial Marine WarningKEY14 min
Sep 27, 2:08 AM EDTSpecial Marine WarningKEY37 min
Sep 27, 2:10 AM EDTTornado Warning Tornado observedKEYMonroe35 min
Sep 27, 2:51 AM EDTSpecial Marine WarningKEY24 min
Sep 27, 3:22 AM EDTAreal Flood AdvisoryKEYMonroe4 hr
Sep 27, 3:50 AM EDTSpecial Marine WarningKEY25 min
Sep 27, 4:13 AM EDTSpecial Marine WarningKEY32 min
Sep 27, 4:59 AM EDTSpecial Marine WarningKEY31 min
Sep 27, 5:13 AM EDTSmall Craft AdvisoryKEY12 hr
Sep 27, 6:45 AM EDTSpecial Marine WarningKEY30 min
Sep 27, 7:23 AM EDTSpecial Marine WarningKEY18 min
Sep 27, 7:25 AM EDTSpecial Marine WarningKEY20 min
Sep 27, 7:38 AM EDTSpecial Marine WarningKEY27 min
Sep 27, 7:52 AM EDTAreal Flood AdvisoryKEYMonroe7 hr
Sep 27, 8:06 AM EDTSpecial Marine WarningKEY8 min
Sep 27, 8:12 AM EDTSpecial Marine WarningKEY18 min
Sep 27, 8:21 AM EDTSpecial Marine WarningKEY25 min
Sep 27, 11:19 AM EDTSpecial Marine WarningKEY10 min

Nearby

Tornado Warnings in Florida, 2022Every tornado warning in 2022Tornadoes in 2022

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.