Alert archive / Florida / Tornado Warnings in 2007

Tornado Warning 5, NWS Tampa Bay, FL

April 11, 2007Pasco County, Florida

NWS Tampa Bay, FL issued this tornado warning at Apr 11, 2007, 9:40 PM EDT for Pasco County, Florida. It was in force for 20 min. 2 reports 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 11, 2007, 9:40 PM EDT (01:40 UTC)
Expired: Apr 11, 2007, 10:00 PM EDT
In force: 20 min
Issued by: NWS Tampa Bay, FL
Area: Counties, with a storm outline in the text

County Pasco County, FL

The radar

The Tampa radar (KTBW), 78 km from the middle of the area, began a volume at 01:44 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

Time	Report	Where	Remark
Apr 11, 9:55 PM EDT	TSTM WND DMG	2 Nw Dade City, FL	TREE DOWN ON AUTOMOBILE. ONE PERSON TRAPPED INSIDE. INJURIES UNKNOWN.
Apr 11, 9:55 PM EDT	TSTM WND DMG	Dade City, FL	TREES AND WIRES KNOCKED DOWN AT ROSE AVENUE AND 14TH STREET IN DADE CITY.

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

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 1.7 hours before the alert went out and 78 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: 819 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 933 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KTBW 120140
TORTBW
FLC101-120200-
/O.NEW.KTBW.TO.W.0005.070412T0140Z-070412T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
940 PM EDT WED APR 11 2007

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN PASCO COUNTY IN FLORIDA.

* UNTIL 1000 PM EDT

* AT 940 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO OVER DADE CITY...MOVING EAST AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  DADE CITY NORTH BY 940 PM EDT.

PLEASE REPORT TORNADOES OR FUNNEL CLOUDS...WINDS OF 58 MPH OR
HIGHER...HAIL THE SIZE OF PENNIES OF LARGER...AND ANY WIND DAMAGE TO
YOUR NATIONAL WEATHER SERVICE IN RUSKIN BY CALLING 813-645-2323.


&&

LAT...LON 2845 8228 2828 8224 2832 8207 2843 8213

$$

57

1 follow-up statement

000 
WWUS52 KTBW 120149
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
950 PM EDT WED APR 11 2007

FLC101-120200-
/O.CON.KTBW.TO.W.0005.000000T0000Z-070412T0200Z/
PASCO-
950 PM EDT WED APR 11 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT FOR
NORTHEASTERN PASCO COUNTY...

THIS IS A DANGEROUS STORM ACT QUICKLY. GO TO A SMALL INTERIOR ROOM
ON THE LOWEST FLOOR OF A STURDY BUILDING...AWAY FROM WINDOWS. COVER
YOUR HEAD WITH PILLOWS OR BLANKETS.

PLEASE REPORT TORNADOES OR FUNNEL CLOUDS...WINDS OF 58 MPH OR
HIGHER...HAIL THE SIZE OF PENNIES OF LARGER...AND ANY WIND DAMAGE TO
YOUR NATIONAL WEATHER SERVICE IN RUSKIN BY CALLING 813-645-2323.

&&

LAT...LON 2845 8228 2828 8224 2832 8207 2843 8213

$$

57

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 11, 8:29 PM EDT	Special Marine Warning	TBW		2 hr
Apr 11, 9:10 PM EDT	Special Marine Warning	TBW		50 min
Apr 11, 9:18 PM EDT	Severe Thunderstorm Warning	TBW	Pasco	27 min
Apr 11, 9:21 PM EDT	Severe Thunderstorm Warning	TBW	Hillsborough, Pasco	24 min
Apr 11, 9:37 PM EDT	Severe Thunderstorm Warning	TBW	Pasco	23 min
Apr 11, 9:48 PM EDT	Special Marine Warning	TBW		42 min
Apr 11, 10:06 PM EDT	Severe Thunderstorm Warning	TBW	Hillsborough	34 min
Apr 11, 10:25 PM EDT	Severe Thunderstorm Warning	TBW	Polk	65 min
Apr 12, 5:40 AM EDT	Fire Weather Watch	TBW	Pinellas, Polk, Sumter	23 hr
Apr 12, 1:57 PM EDT	Red Flag Warning	TBW		6 hr
Apr 12, 1:57 PM EDT	Red Flag Warning	TBW	DeSoto, Hardee, Highlands, Polk, Sumter	30 hr

Nearby

Tornado Warnings in Florida, 2007 Every tornado warning in 2007 Tornadoes in 2007

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.