Alert archive / Florida / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 21, NWS Tampa Bay, FL

June 15, 2015Hillsborough County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 15, 2015, 5:54 PM EDT for Hillsborough County, Florida. It was in force for 36 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
Jun 15, 2015, 5:54 PM EDT (21:54 UTC)
Expired
Jun 15, 2015, 6:30 PM EDT
In force
36 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon

County Hillsborough County, FL

The radar

The Tampa radar (KTBW), 26 km from the middle of the area, began a volume at 21:55 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
Jun 15, 5:54 PM EDTTSTM WND DMGDavis Islands, FLDAVIS ISLAND YACHT CLUB REPORT SEVERAL DRY DOCKED BOATS WERE BLOWN OVER.
Jun 15, 5:55 PM EDTTSTM WND GST 55Peter O Knight Airport, FLPETER O KNIGHT AIRPORT REPORTED A WIND GUST TO 48 KNOTS OR 55 MPH AT 555 PM.

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 12:00Z, 9.9 hours before the alert went out and 26 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 2015-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 238 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 2015-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 square meters per square second.1939Sfc1 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
238 J/kg
Mixed-layer CIN
-177 J/kg
Mixed-layer LCL
1171 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

242 
WUUS52 KTBW 152154
SVRTBW
FLC057-152230-
/O.NEW.KTBW.SV.W.0021.150615T2154Z-150615T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA / RUSKIN FL
554 PM EDT MON JUN 15 2015

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN HILLSBOROUGH COUNTY IN WEST CENTRAL FLORIDA...

* UNTIL 630 PM EDT

* AT 554 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
  WAS LOCATED OVER TAMPA...AND MOVING WEST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  TAMPA...EAST LAKE-ORIENT PARK...TAMPA INTERNATIONAL AIRPORT...EGYPT
  LAKE-LETO...PALM RIVER-CLAIR MEL...TOWN 'N' COUNTRY...MACDILL AIR
  FORCE BASE...CITRUS PARK...GREATER CARROLLWOOD...KEYSTONE...WEST
  PARK...OLDSMAR...DAVIS ISLANDS...PETER O KNIGHT AIRPORT...SOUTH
  TAMPA...RAYMOND JAMES STADIUM...ORIENT PARK...SOHO...GIBSONTON AND
  PALM RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DEADLY LIGHTNING AND 
VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON 
THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS 
QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

IN ADDITION TO DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING 
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. LIGHTNING IS 
ONE OF NATURES LEADING KILLERS. REMEMBER... IF YOU CAN HEAR 
THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 2811 8264 2799 8234 2779 8236 2780 8241
      2782 8239 2788 8240 2790 8244 2793 8246
      2792 8249 2786 8249 2783 8247 2783 8254
      2794 8253 2797 8256 2799 8264 2802 8266
TIME...MOT...LOC 2154Z 109DEG 27KT 2793 8247 

$$
1 follow-up statement
032 
WWUS52 KTBW 152214
SVSTBW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA / RUSKIN FL
614 PM EDT MON JUN 15 2015

FLC057-152230-
/O.CON.KTBW.SV.W.0021.000000T0000Z-150615T2230Z/
HILLSBOROUGH FL-
614 PM EDT MON JUN 15 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR NORTHWESTERN HILLSBOROUGH COUNTY...

AT 613 PM EDT...DOPPLER RADAR CONTINUED TO INDICATED A SEVERE 
THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 
MPH. THIS STORM WAS LOCATED OVER TOWN 'N' COUNTRY...OR 8 MILES 
NORTHWEST OF TAMPA... MOVING NORTHWEST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
TAMPA...EAST LAKE-ORIENT PARK...TAMPA INTERNATIONAL AIRPORT...TOWN
'N' COUNTRY...EGYPT LAKE-LETO...CITRUS PARK...GREATER CARROLLWOOD...
PALM RIVER-CLAIR MEL...KEYSTONE...WEST PARK...OLDSMAR...DAVIS
ISLANDS...UNIVERSITY OF TAMPA...CARROLLWOOD...WESTCHASE...PETER O
KNIGHT AIRPORT...RAYMOND JAMES STADIUM...ORIENT PARK...SOHO AND
CHANNELSIDE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DEADLY LIGHTNING AND 
VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE 
LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS 
QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

IN ADDITION TO DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING 
IS OCCURRING WITH THIS STORM.  MOVE INDOORS IMMEDIATELY. LIGHTNING 
IS ONE OF NATURES LEADING KILLERS. REMEMBER... IF YOU CAN HEAR 
THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 2811 8264 2799 8234 2790 8244 2793 8246
      2792 8249 2794 8253 2797 8256 2799 8264
      2802 8266
TIME...MOT...LOC 2213Z 119DEG 27KT 2804 8259 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 2:08 PM EDTSpecial Weather StatementTBWLee37 min
Jun 15, 3:05 PM EDTSpecial Marine WarningTBW25 min
Jun 15, 3:37 PM EDTSpecial Marine WarningTBW38 min
Jun 15, 3:46 PM EDTSpecial Weather StatementTBWSarasota29 min
Jun 15, 3:53 PM EDTSevere Thunderstorm WarningTBWSarasota22 min
Jun 15, 5:13 PM EDTSpecial Marine WarningTBW32 min
Jun 15, 5:27 PM EDTSpecial Weather StatementTBWHillsborough33 min
Jun 15, 5:48 PM EDTSpecial Weather StatementTBWHillsborough42 min
Jun 15, 5:51 PM EDTSpecial Marine WarningTBW39 min
Jun 15, 6:10 PM EDTSpecial Weather StatementTBWPinellas50 min
Jun 15, 6:24 PM EDTSevere Thunderstorm WarningTBWPasco, Pinellas36 min
Jun 15, 6:38 PM EDTSpecial Marine WarningTBW37 min
Jun 15, 6:39 PM EDTSevere Thunderstorm WarningTBWHernando, Pasco36 min

Nearby

Severe Thunderstorm Warnings in Florida, 2015Every severe thunderstorm warning in 2015

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.