Alert archive / Florida / Tornado Warnings in 2016

Tornado Warning 1, NWS Key West, FL

January 15, 2016Monroe County, Florida

NWS Key West, FL issued this tornado warning at Jan 15, 2016, 3:28 PM EST 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
Jan 15, 2016, 3:28 PM EST (20:28 UTC)
Expired
Jan 15, 2016, 3:42 PM EST
In force
14 min
Issued by
NWS Key West, FL
Area
Storm-based polygon

County Monroe County, FL

The radar

The Key West radar (KBYX), 72 km from the middle of the area, began a volume at 20:31 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 (KEYW), launched 12:00Z, 8.5 hours before the alert went out and 74 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 2016-01-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 224 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 2016-01-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 291 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
224 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
773 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
291 m²/s²
0-3 km storm-relative helicity
313 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.8

Open this sounding in Storm Lab

The text

As transmitted.

479 
WFUS52 KKEY 152028
TORKEY
FLC087-152100-
/O.NEW.KKEY.TO.W.0001.160115T2028Z-160115T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KEY WEST FL
328 PM EST FRI JAN 15 2016

THE NATIONAL WEATHER SERVICE IN KEY WEST HAS ISSUED A

* TORNADO WARNING FOR...
  MIDDLE KEYS IN MONROE COUNTY IN FLORIDA...

* UNTIL 400 PM EST

* AT 327 PM EST...A TORNADO WAS REPORTED NEAR MARATHON. DOPPLER RADAR
  SHOWED THIS TORNADO MOVING NORTHEAST AT 25 TO 30 MPH.

* LOCATIONS IMPACTED INCLUDE...MARATHON AND KEY COLONY BEACH  
  
THIS INCLUDES US 1 BETWEEN MILE MARKERS 51 AND 58. 

LAT...LON 2472 8108 2472 8107 2474 8104 2473 8104
      2474 8099 2475 8100 2476 8099 2475 8098
      2478 8094 2476 8096 2477 8093 2474 8098
      2473 8101 2472 8102 2471 8107
TIME...MOT...LOC 2027Z 240DEG 29KT 2473 8103 

$$

04
1 follow-up statement
241 
WWUS52 KKEY 152042
SVSKEY

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KEY WEST FL
342 PM EST FRI JAN 15 2016

FLC087-152052-
/O.CAN.KKEY.TO.W.0001.000000T0000Z-160115T2100Z/
MIDDLE KEYS IN MONROE FL-
342 PM EST FRI JAN 15 2016

...THE TORNADO WARNING FOR MIDDLE KEYS IN MONROE COUNTY IS
CANCELLED...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 2472 8108 2472 8107 2474 8104 2473 8104
      2474 8099 2475 8100 2476 8099 2475 8098
      2478 8094 2476 8096 2477 8093 2474 8098
      2473 8101 2472 8102 2471 8107
TIME...MOT...LOC 2040Z 240DEG 29KT 2479 8091 

$$

04

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 15, 11:38 AM ESTSpecial Marine WarningKEY52 min
Jan 15, 12:57 PM ESTSpecial Weather StatementKEY48 min
Jan 15, 1:00 PM ESTSpecial Marine WarningKEY60 min
Jan 15, 1:17 PM ESTSpecial Marine WarningKEY58 min
Jan 15, 1:31 PM ESTSpecial Marine WarningKEY59 min
Jan 15, 2:15 PM ESTSpecial Marine WarningKEY60 min
Jan 15, 2:37 PM ESTSpecial Marine WarningKEY68 min
Jan 15, 2:43 PM ESTSpecial Weather StatementKEY32 min
Jan 15, 2:53 PM ESTSpecial Marine WarningKEY52 min
Jan 15, 3:13 PM ESTSpecial Marine WarningKEY62 min
Jan 15, 3:15 PM ESTSpecial Weather StatementKEY45 min
Jan 15, 3:19 PM ESTSpecial Marine WarningKEY56 min
Jan 15, 3:53 PM ESTSpecial Marine WarningKEY67 min
Jan 15, 3:54 PM ESTSpecial Marine WarningKEY66 min
Jan 15, 4:27 PM ESTSpecial Marine WarningKEY63 min

Nearby

Tornado Warnings in Florida, 2016Every tornado warning in 2016Tornadoes in 2016

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.