Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Tampa Bay, FL

August 7, 2021Pasco County, Florida

NWS Tampa Bay, FL issued this special weather statement at Aug 7, 2021, 2:45 PM EDT for Pasco County, Florida. It was in force for 30 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
Aug 7, 2021, 2:45 PM EDT (18:45 UTC)
Expired
Aug 7, 2021, 3:15 PM EDT
In force
30 min
Issued by
NWS Tampa Bay, FL
Hail
0.25 in
Wind
40

County Pasco County, FL

The radar

The Tampa radar (KTBW), 49 km from the middle of the area, began a volume at 18:47 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, 6.8 hours before the alert went out and 49 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 2021-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 668 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 2021-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
668 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
962 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

143 
WWUS82 KTBW 071845
SPSTBW

Special Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
245 PM EDT Sat Aug 7 2021
 
FLZ249-251-071915-
Inland Pasco FL-Inland Hillsborough FL-
245 PM EDT Sat Aug 7 2021

...A strong thunderstorm will impact portions of southeastern Pasco
and northeastern Hillsborough Counties through 315 PM EDT...

At 245 PM EDT, Doppler radar was tracking a strong thunderstorm over
Pebble Creek, or near Temple Terrace, moving northeast at 10 mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Tampa, Temple Terrace, Lutz, Zephyrhills West, Hillsborough River
State Park, Pebble Creek, Wesley Chapel South, Zephyrhills South,
University, Wesley Chapel, Thonotosassa, New Tampa, Meadow Pointe,
Lettuce Lake Park and Crystal Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 2831 8225 2809 8211 2801 8235 2804 8237
      2806 8241 2816 8247
TIME...MOT...LOC 1845Z 242DEG 8KT 2812 8235 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

$$

TBW

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 3:12 PM EDTSpecial Weather StatementTBWPolk33 min
Aug 7, 5:32 PM EDTSpecial Weather StatementTBWHighlands58 min

Nearby

Special Weather Statements in Florida, 2021Every special weather statement in 2021

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.