Alert archive / Florida / Tornado Warnings in 2009

Tornado Warning 7, NWS Miami, FL

December 5, 2009Collier County, Florida

NWS Miami, FL issued this tornado warning at Dec 5, 2009, 2:13 AM EST for Collier County, Florida. It was in force for 30 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
Dec 5, 2009, 2:13 AM EST (07:13 UTC)
Expired
Dec 5, 2009, 2:43 AM EST
In force
30 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

County Collier County, FL

The radar

The Miami radar (KAMX), 71 km from the middle of the area, began a volume at 07:15 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
Dec 5, 12:48 AM ESTTornado WatchSPC8 hr

The nearest sounding before it

Miami, FL (KMFL), launched 00:00Z, 7.2 hours before the alert went out and 71 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 2009-12-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1617 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 2009-12-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.19395878Sfc1 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
1617 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
763 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.7

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KMFL 050713
TORMFL
FLC021-050800-
/O.NEW.KMFL.TO.W.0007.091205T0713Z-091205T0800Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
213 AM EST SAT DEC 5 2009

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL COLLIER COUNTY IN SOUTHWEST FLORIDA...

* UNTIL 300 AM EST

* AT 209 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER
  SOUTHEASTERN COLLIER COUNTY A FEW MILES NORTH OF US
  41 JUST NORTHWEST OF OASIS RANGER STATION...MOVING NORTHEAST AT 20 MPH.

  THIS STORM IS ALSO CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS
  OF 70 MPH.

* THE TORNADO WILL BE NEAR...
  RURAL SOUTHEASTERN COLLIER COUNTY
  RURAL EASTERN COLLIER COUNTY
  AND SURROUNDING COMMUNITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE NEAR THE PATH OF A TORNADO...SEEK SHELTER IN A STURDY
BUILDING ON THE LOWEST FLOOR...AWAY FROM OUTSIDE WALLS AND WINDOWS.
GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND STAY AWAY FROM WINDOWS.

TORNADOES ARE ESPECIALLY DANGEROUS AT NIGHT BECAUSE THEY ARE HARD TO
SEE. TAKE COVER NOW IF YOU WAIT UNTIL YOU SEE OR HEAR IT COMING...IT
MAY BE TOO LATE TO GET TO A SAFE PLACE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. LEAVE MOBILE HOMES AND VEHICLES FOR
REINFORCED SHELTER. STAY AWAY FROM WINDOWS.

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO 
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM EST SATURDAY MORNING
FOR SOUTHERN FLORIDA.

&&

LAT...LON 2613 8088 2592 8088 2586 8107 2597 8113
TIME...MOT...LOC 0711Z 243DEG 18KT 2592 8109

$$

BAXTER
1 follow-up statement
733 
WWUS52 KMFL 050743
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
243 AM EST SAT DEC 5 2009

FLC021-050752-
/O.CAN.KMFL.TO.W.0007.000000T0000Z-091205T0800Z/
COLLIER FL-
243 AM EST SAT DEC 5 2009

...THE TORNADO WARNING FOR EAST CENTRAL COLLIER COUNTY IS
CANCELLED...

NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE TORNADO HAS MOVED 
OUT OF THE WARNED AREA AND WEAKENED. THUS THE TORNADO WARNING HAS 
BEEN CANCELLED.

HOWEVER...THUNDERSTORMS REMAIN IN THE AREA. FREQUENT 
LIGHTNING...GUSTY WINDS TO 50 MPH...VERY HEAVY RAINFALL AND SMALL 
HAIL ARE STILL POSSIBLE. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL 
MEDIA FOR THE LATEST UPDATES.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM EST SATURDAY MORNING
FOR SOUTHERN FLORIDA.

LAT...LON 2613 8088 2592 8088 2586 8107 2597 8113
TIME...MOT...LOC 0742Z 243DEG 18KT 2599 8094

$$

BAXTER

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 4, 9:28 PM ESTSpecial Marine WarningMFL62 min
Dec 4, 10:32 PM ESTSpecial Marine WarningMFL88 min
Dec 4, 11:37 PM ESTSpecial Weather StatementMFLCollier53 min
Dec 5, 12:07 AM ESTSpecial Marine WarningMFL68 min
Dec 5, 12:40 AM ESTSpecial Weather StatementMFLCollier50 min
Dec 5, 2:33 AM ESTSpecial Weather StatementMFLBroward42 min
Dec 5, 2:59 AM ESTSpecial Weather StatementMFLPalm Beach31 min
Dec 5, 3:19 AM ESTSpecial Weather StatementMFLPalm Beach26 min
Dec 5, 3:21 AM ESTSpecial Weather StatementMFLBroward24 min
Dec 5, 3:42 AM ESTSpecial Weather StatementMFLBroward33 min
Dec 5, 3:53 AM ESTSpecial Marine WarningMFL37 min
Dec 5, 4:13 AM ESTSpecial Marine WarningMFL62 min
Dec 5, 4:15 AM ESTSpecial Weather StatementMFLBroward45 min
Dec 5, 4:48 AM ESTSpecial Weather StatementMFLPalm Beach27 min
Dec 5, 7:18 AM ESTSpecial Marine WarningMFL46 min
Dec 5, 8:40 AM ESTSpecial Marine WarningMFL65 min
Dec 5, 9:42 AM ESTSpecial Marine WarningMFL2 hr
Dec 5, 10:10 AM ESTSpecial Weather StatementMFLHendry50 min
Dec 5, 10:36 AM ESTSmall Craft Advisory for WindsMFL17 hr
Dec 5, 11:44 AM ESTSpecial Marine WarningMFL45 min
Dec 5, 12:05 PM ESTSpecial Weather StatementMFLCollier25 min

Nearby

Tornado Warnings in Florida, 2009Every tornado warning in 2009Tornadoes in 2009

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.