Alert archive / Florida / Special Weather Statements in 2017

Special Weather Statement, NWS Tampa Bay, FL

July 29, 2017Hillsborough County, Florida

NWS Tampa Bay, FL issued this special weather statement at Jul 29, 2017, 4:13 PM EDT for Hillsborough County, Florida. It was in force for 32 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
Jul 29, 2017, 4:13 PM EDT (20:13 UTC)
Expired
Jul 29, 2017, 4:45 PM EDT
In force
32 min
Issued by
NWS Tampa Bay, FL

County Hillsborough County, FL

The radar

The Tampa radar (KTBW), 46 km from the middle of the area, began a volume at 20:13 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, 8.2 hours before the alert went out and 46 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 2017-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1467 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 12:00Z on 2017-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -64 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
1467 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
876 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-64 m²/s²
0-3 km storm-relative helicity
-46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

280 
WWUS82 KTBW 292013
SPSTBW

Special Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
413 PM EDT SAT JUL 29 2017

FLZ052-151-251-292045-
Coastal Hillsborough-Polk-Inland Hillsborough-
413 PM EDT SAT JUL 29 2017

...STRONG THUNDERSTORMS WILL AFFECT WEST CENTRAL POLK AND 
NORTHEASTERN HILLSBOROUGH COUNTIES...

At 412 PM EDT, radar indicated strong thunderstorms extended from 
near Pebble Creek to near Palm River-Clair Mel. Movement was east at 
30 mph.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
Tampa, Lakeland, Plant City, Temple Terrace, Brandon, Fish Hawk,
Hillsborough River State Park, Palm River-Clair Mel, East Lake-Orient
Park, Riverview, Mango, Peter O Knight Airport, Plant City Airport,
Tampa Executive Airport, Winston, Orient Park, Kathleen, Valrico,
Seffner and Florida State Fairgrounds.

LAT...LON 2816 8194 2787 8209 2790 8247 2815 8227
TIME...MOT...LOC 2012Z 256DEG 24KT 2809 8229 2791 8243 

$$

TBW

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 3:30 PM EDTSpecial Marine WarningTBW45 min
Jul 29, 3:38 PM EDTSpecial Weather StatementTBWHillsborough52 min
Jul 29, 3:44 PM EDTSpecial Weather StatementTBWHillsborough46 min

Nearby

Special Weather Statements in Florida, 2017Every special weather statement in 2017

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.