Alert archive / Florida / Tornado Warnings in 2009

Tornado Warning 2, NWS Tampa Bay, FL

April 14, 2009Pasco County, Pinellas County, Florida

NWS Tampa Bay, FL issued this tornado warning at Apr 14, 2009, 8:25 AM EDT for Pasco County, Pinellas County, Florida. It was in force for 16 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 14, 2009, 8:25 AM EDT (12:25 UTC)
Expired
Apr 14, 2009, 8:41 AM EDT
In force
16 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon

Counties Pasco County, FL, Pinellas County, FL

The radar

The Tampa radar (KTBW), 60 km from the middle of the area, began a volume at 12:24 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.

What was reported inside it

TimeReportWhereRemark
Apr 14, 8:31 AM EDTTORNADO4 E Holiday, FLTORNADO DAMAGE REPORTED IN TRINITY OAKS SUBDIVISION.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 14, 6:15 AM EDTTornado WatchSPC6 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 0.4 hours before the alert went out and 60 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, Tampa Bay, FL at 12:00Z on 2009-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1552 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, Tampa Bay, FL at 12:00Z on 2009-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 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
1552 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
782 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
201 m²/s²
0-3 km storm-relative helicity
260 m²/s²
Significant tornado parameter
2.3
Supercell composite
13.3

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KTBW 141225
TORTBW
FLC101-103-141300-
/O.NEW.KTBW.TO.W.0002.090414T1225Z-090414T1300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
825 AM EDT TUE APR 14 2009

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN PASCO COUNTY IN FLORIDA.
  NORTHERN PINELLAS COUNTY IN FLORIDA.

* UNTIL 900 AM EDT

* AT 825 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR DUNEDIN...MOVING EAST AT 45 MPH.

* THE TORNADO WILL BE NEAR...
  DUNEDIN.
  PALM HARBOR.
  TARPON SPRINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THE TORNADO GO TO A SMALL INTERIOR ROOM IN
A STRONG AND WELL CONSTRUCTED BUILDING. CARS AND MOBILE HOMES ARE NOT
SAFE IF NO SHELTER IS AVAILABLE...LIE FLAT IN A DITCH OR CULVERT AND
COVER YOUR HEAD WITH YOUR HANDS.

TO REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE PLEASE CALL
813-645-2323.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 PM EDT TUESDAY AFTERNOON
FOR NORTHWESTERN FLORIDA.

&&

LAT...LON 2817 8280 2820 8279 2825 8264 2808 8265
      2800 8283 2808 8284 2809 8282 2804 8280
      2815 8279 2817 8282 2816 8284 2817 8286
TIME...MOT...LOC 1225Z 250DEG 38KT 2808 8283

$$
1 follow-up statement
000 
WWUS52 KTBW 141241
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
841 AM EDT TUE APR 14 2009

FLC101-103-141252-
/O.CAN.KTBW.TO.W.0002.000000T0000Z-090414T1300Z/
PINELLAS FL-PASCO FL-
841 AM EDT TUE APR 14 2009

...THE TORNADO WARNING FOR SOUTHWESTERN PASCO AND NORTHERN PINELLAS
COUNTIES IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 PM EDT TUESDAY AFTERNOON
FOR NORTHWESTERN FLORIDA.

LAT...LON 2817 8280 2820 8279 2825 8264 2808 8265
      2800 8283 2808 8284 2809 8282 2804 8280
      2815 8279 2817 8282 2816 8284 2817 8286
TIME...MOT...LOC 1242Z 250DEG 38KT 2814 8264

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 8:38 PM EDTSpecial Marine WarningTBW82 min
Apr 13, 9:00 PM EDTSpecial Weather StatementTBWLevy60 min
Apr 14, 3:34 AM EDTSpecial Marine WarningTBW26 min
Apr 14, 4:00 AM EDTLake Wind AdvisoryTBWDeSoto, Hardee, Highlands, Pinellas, Polk, Sumter16 hr
Apr 14, 6:57 AM EDTSpecial Marine WarningTBW63 min
Apr 14, 7:11 AM EDTSpecial Weather StatementTBWCitrus, Levy64 min
Apr 14, 7:57 AM EDTSpecial Marine WarningTBW63 min
Apr 14, 8:07 AM EDTSevere Thunderstorm WarningTBWCitrus, Hernando, Levy, Sumter53 min
Apr 14, 8:17 AM EDTSevere Thunderstorm WarningTBWHernando, Hillsborough, Pasco, Pinellas58 min
Apr 14, 8:40 AM EDTSpecial Marine WarningTBW65 min
Apr 14, 8:48 AM EDTTornado WarningTBWHillsborough, Pasco27 min
Apr 14, 8:57 AM EDTAreal Flood AdvisoryTBWCitrus3 hr
Apr 14, 9:02 AM EDTSevere Thunderstorm WarningTBWHernando, Hillsborough, Pasco, Polk, Sumter58 min
Apr 14, 9:09 AM EDTSpecial Marine WarningTBW66 min
Apr 14, 10:15 AM EDTSpecial Weather StatementTBWPolk60 min
Apr 14, 1:48 PM EDTSpecial Weather StatementTBWManatee57 min
Apr 14, 1:49 PM EDTSpecial Marine WarningTBW56 min
Apr 14, 2:49 PM EDTSpecial Marine WarningTBW86 min
Apr 14, 3:43 PM EDTSpecial Weather StatementTBWHillsborough, Pinellas, Polk47 min
Apr 14, 4:31 PM EDTSpecial Weather StatementTBWHillsborough, Pinellas, Polk59 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.