Alert archive / Florida / Tornado Warnings in 2007

Tornado Warning 21, NWS Tampa Bay, FL

December 16, 2007Pasco County, Sumter County, Florida

NWS Tampa Bay, FL issued this tornado warning at Dec 16, 2007, 5:45 AM EST for Pasco County, Sumter County, Florida. It was in force for 15 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 16, 2007, 5:45 AM EST (10:45 UTC)
Expired: Dec 16, 2007, 6:00 AM EST
In force: 15 min
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon

Counties Pasco County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 84 km from the middle of the area, began a volume at 10:46 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
Dec 15, 9:42 PM EST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 10.8 hours before the alert went out and 84 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: 660 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 839 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 143 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KTBW 161045
TORTBW
FLC101-119-161100-
/O.NEW.KTBW.TO.W.0021.071216T1045Z-071216T1100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
545 AM EST SUN DEC 16 2007

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

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

* UNTIL 600 AM EST

* AT 545 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO OVER DADE CITY...MOVING NORTHEAST AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  DADE CITY NORTH BY 545 AM EST.
  THE GREEN SWAMP BY 555 AM EST.

TORNADOES ARE ESPECIALLY DANGEROUS AT NIGHT. TAKE COVER NOW MOVE TO
A SMALL INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING.
ABANDON MOBILE HOMES. LEAVE VEHICLES AND GET INTO A DITCH OR LOW
SPOT.

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


&&

LAT...LON 2848 8212 2847 8206 2851 8205 2855 8194
      2835 8194 2833 8196 2831 8199 2832 8204
      2828 8206 2825 8212 2842 8224
TIME...MOT...LOC 1045Z 242DEG 27KT 2838 8210

$$

63

1 follow-up statement

000 
WWUS52 KTBW 161104
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
604 AM EST SUN DEC 16 2007

FLC101-119-161114-
/O.EXP.KTBW.TO.W.0021.000000T0000Z-071216T1100Z/
SUMTER-PASCO-
604 AM EST SUN DEC 16 2007

...THE TORNADO WARNING FOR NORTHEASTERN PASCO AND SOUTHEASTERN SUMTER
COUNTIES HAS EXPIRED...

AT 604 AM EST...NATIONAL WEATHER SERVICE RADAR INDICATED THE TORNADO
THAT PROMPTED THE WARNING...HAD EXITED THE WARNED AREA...THUS THE
WARNING HAS BEEN ALLOWED TO EXPIRE.

&&

LAT...LON 2848 8212 2847 8206 2851 8205 2855 8194
      2835 8194 2833 8196 2831 8199 2832 8204
      2828 8206 2825 8212 2842 8224
TIME...MOT...LOC 1045Z 242DEG 27KT 2838 8210

$$

63

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 15, 10:55 PM EST	Coastal Flood Statement	TBW		10 hr
Dec 16, 12:23 AM EST	Special Marine Warning	TBW		67 min
Dec 16, 12:23 AM EST	Special Marine Warning	TBW		67 min
Dec 16, 1:25 AM EST	Special Marine Warning	TBW		65 min
Dec 16, 2:31 AM EST	Special Marine Warning	TBW		59 min
Dec 16, 2:45 AM EST	Freeze Watch	TBW	Sumter	26 hr
Dec 16, 2:45 AM EST	Freeze Warning	TBW	Sumter	30 hr
Dec 16, 2:45 AM EST	Lake Wind Advisory	TBW	DeSoto, Hardee, Highlands, Pinellas, Polk, Sumter	15 hr
Dec 16, 2:45 AM EST	Severe Thunderstorm Warning	TBW	Levy	30 min
Dec 16, 3:25 AM EST	Severe Thunderstorm Warning	TBW	Citrus, Hernando, Pasco, Sumter	65 min
Dec 16, 3:31 AM EST	Special Marine Warning	TBW		59 min
Dec 16, 4:10 AM EST	Severe Thunderstorm Warning	TBW	Hillsborough, Pasco, Pinellas	20 min
Dec 16, 4:32 AM EST	Severe Thunderstorm Warning	TBW	Hillsborough, Pasco, Pinellas	58 min
Dec 16, 4:46 AM EST	Tornado Warning	TBW	Pasco	29 min
Dec 16, 5:08 AM EST	Tornado Warning	TBW	Pasco	52 min
Dec 16, 5:30 AM EST	Special Marine Warning	TBW		45 min
Dec 16, 3:21 PM EST	Wind Chill Advisory	TBW	DeSoto, Hardee, Highlands, Pinellas, Polk, Sumter	17 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.