Alert archive / Florida / Tornado Warnings in 2018

Tornado Warning 13, NWS Tampa Bay, FL

November 2, 2018Hillsborough County, Florida

NWS Tampa Bay, FL issued this tornado warning at Nov 2, 2018, 3:23 PM EDT for Hillsborough County, Florida. It was in force for 14 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
Nov 2, 2018, 3:23 PM EDT (19:23 UTC)
Expired
Nov 2, 2018, 3:37 PM EDT
In force
14 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Hillsborough County, FL

The radar

The Tampa radar (KTBW), 45 km from the middle of the area, began a volume at 19:25 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 nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 7.4 hours before the alert went out and 45 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 2018-11-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 125 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 2018-11-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 109 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
125 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
693 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
109 m²/s²
0-3 km storm-relative helicity
139 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.9

Open this sounding in Storm Lab

The text

As transmitted.

264 
WFUS52 KTBW 021923
TORTBW
FLC057-022000-
/O.NEW.KTBW.TO.W.0013.181102T1923Z-181102T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tampa Bay Area Ruskin FL
323 PM EDT FRI NOV 2 2018

The National Weather Service in Ruskin has issued a

* Tornado Warning for...
  Northern Hillsborough County in west central Florida...

* Until 400 PM EDT.
    
* At 322 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over University, or near Temple Terrace, moving
  northeast at 45 mph. This storm has a history of damage in Pinellas
  and Hillsborough Counties. Take Cover Now!

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Pebble Creek around 335 PM EDT.
  Hillsborough River State Park around 340 PM EDT.

Other locations impacted by this tornadic thunderstorm include Busch
Gardens, Seffner, Florida State Fairgrounds, Mango, Thonotosassa,
Carrollwood, Dover, New Tampa, Plant City Airport and Tampa Executive
Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 2817 8235 2817 8209 2800 8211 2796 8250
      2814 8251
TIME...MOT...LOC 1922Z 245DEG 39KT 2806 8244 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

TBW
1 follow-up statement
471 
WWUS52 KTBW 021937 RRA
SVSTBW

Severe Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
337 PM EDT FRI NOV 2 2018

FLC057-021947-
/O.CAN.KTBW.TO.W.0013.000000T0000Z-181102T2000Z/
Hillsborough FL-
337 PM EDT FRI NOV 2 2018

...THE TORNADO WARNING FOR NORTHEASTERN HILLSBOROUGH COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has weakened. 
Therefore, the warning has been cancelled.

LAT...LON 2817 8235 2817 8209 2800 8211 2796 8250
      2814 8251
TIME...MOT...LOC 1936Z 245DEG 39KT 2813 8227 

$$

TBW

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 2, 1:25 PM EDTSpecial Marine WarningTBW50 min
Nov 2, 2:02 PM EDTSpecial Marine WarningTBW43 min
Nov 2, 2:31 PM EDTSpecial Weather StatementTBWHillsborough, Pasco, Pinellas44 min
Nov 2, 2:33 PM EDTSpecial Marine WarningTBW57 min
Nov 2, 2:42 PM EDTSevere Thunderstorm WarningTBWHillsborough, Pasco, Pinellas33 min
Nov 2, 2:48 PM EDTSpecial Marine WarningTBW57 min
Nov 2, 2:52 PM EDTTornado WarningTBWPinellas23 min
Nov 2, 3:05 PM EDTTornado WarningTBWPinellas25 min
Nov 2, 3:08 PM EDTTornado WarningTBWHillsborough, Pinellas37 min
Nov 2, 3:15 PM EDTSevere Thunderstorm WarningTBWHernando, Hillsborough, Pasco, Polk45 min
Nov 2, 3:16 PM EDTTornado WarningTBWPasco29 min
Nov 2, 3:21 PM EDTTornado WarningTBWHillsborough24 min
Nov 2, 3:23 PM EDTSpecial Marine WarningTBW67 min
Nov 2, 3:45 PM EDTTornado WarningTBWHernando, Pasco30 min
Nov 2, 3:47 PM EDTSevere Thunderstorm WarningTBWHernando, Hillsborough, Pasco, Polk, Sumter28 min
Nov 2, 3:52 PM EDTTornado WarningTBWManatee23 min
Nov 2, 3:55 PM EDTSevere Thunderstorm WarningTBWHardee, Hillsborough, Manatee, Polk35 min
Nov 2, 4:00 PM EDTTornado WarningTBWPolk30 min
Nov 2, 4:06 PM EDTTornado WarningTBWSumter24 min
Nov 2, 4:20 PM EDTSpecial Weather StatementTBWSumter25 min
Nov 2, 4:28 PM EDTSevere Thunderstorm WarningTBWPolk21 min
Nov 2, 4:53 PM EDTSpecial Weather StatementTBWHardee, Highlands52 min

Nearby

Tornado Warnings in Florida, 2018Every tornado warning in 2018Tornadoes in 2018

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.