Alert archive / Florida / Tornado Warnings in 2005

Tornado Warning 21, NWS EYW

October 24, 2005Monroe County, Florida

NWS EYW issued this tornado warning at Oct 24, 2005, 12:38 AM EDT for Monroe County, Florida. It was in force for 52 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: Oct 24, 2005, 12:38 AM EDT (04:38 UTC)
Expired: Oct 24, 2005, 1:30 AM EDT
In force: 52 min
Issued by: NWS EYW
Area: Counties, with a storm outline in the text

County Monroe County, FL

The radar

The Key West radar (KBYX), 33 km from the middle of the area, began a volume at 04:42 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.

Issued	Product	Office	Lasted
Oct 23, 9:25 PM EDT	Tornado Watch	SPC	14 hr

The nearest sounding before it

Key West, FL (KEYW), launched 00:00Z, 4.6 hours before the alert went out and 34 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2004 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 681 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 253 m²/s²
0-3 km storm-relative helicity: 315 m²/s²
Significant tornado parameter: 3.2
Supercell composite: 27.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

821 
WFUS52 KEYW 240439
TOREYW
FLC087-240530-
/O.NEW.KEYW.TO.W.0021.051024T0438Z-051024T0530Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KEY WEST FL
1238 AM EDT MON OCT 24 2005

THE NATIONAL WEATHER SERVICE IN KEY WEST HAS ISSUED A

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

* UNTIL 130 AM EDT

* AT 1236 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  VIOLENT WATERSPOUT 22 MILES SOUTH OF RAMROD KEY...MOVING NORTH AT
  70 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  BIG PINE KEY...LITTLE TORCH KEY...RAMROD KEY AND MIDDLE TORCH KEY
  BY 1255 AM EDT
  BIG TORCH KEY BY 100 AM EDT

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.  STAY
AWAY FROM WINDOWS.

TORNADOES ASSOCIATED WITH TROPICAL CYCLONES MOVE RAPIDLY...ARE OFTEN
WRAPPED IN HEAVY RAIN...AND ARE DIFFICULT TO SEE OR HEAR UNTIL THEY
ARE VERY CLOSE. SEEK SAFE SHELTER IMMEDIATELY!

A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 1100 AM EDT MONDAY
MORNING FOR FLORIDA.

LAT...LON 2425 8147 2424 8128 2495 8124 2496 8149

$$

LK

The office that day

Everything else NWS EYW issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 23, 10:08 PM EDT	Tornado Warning	EYW		22 min
Oct 24, 5:30 PM EDT	Wind Advisory	EYW	Monroe	6 hr

Nearby

Tornado Warnings in Florida, 2005 Every tornado warning in 2005 Tornadoes in 2005

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.