Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 5, NWS Tampa Bay, FL

April 10, 2021Hillsborough County, Manatee County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Apr 10, 2021, 5:41 PM EDT for Hillsborough County, Manatee County, Florida. It was in force for 19 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: Apr 10, 2021, 5:41 PM EDT (21:41 UTC)
Expired: Apr 10, 2021, 6:00 PM EDT
In force: 19 min
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Hillsborough County, FL, Manatee County, FL

The radar

The Tampa radar (KTBW), 4 km from the middle of the area, began a volume at 21:40 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, 9.7 hours before the alert went out and 4 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1070 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 168 m²/s²
0-3 km storm-relative helicity: 157 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

017 
WUUS52 KTBW 102141
SVRTBW
FLC057-081-102200-
/O.NEW.KTBW.SV.W.0005.210410T2141Z-210410T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tampa Bay Area Ruskin FL
541 PM EDT Sat Apr 10 2021

The National Weather Service in Ruskin has issued a

* Severe Thunderstorm Warning for...
  Northeastern Manatee County in west central Florida...
  Southeastern Hillsborough County in west central Florida...

* Until 600 PM EDT.

* At 539 PM EDT, a severe thunderstorm was located over Ruskin, or 13
  miles east of Downtown Saint Petersburg, moving southeast at 40
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Ruskin, Greater Sun Center, Little Manatee River State Park,
  Wimauma, Sun City Center, Fort Lonesome and Gibsonton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 2771 8255 2786 8243 2768 8207 2746 8225
TIME...MOT...LOC 2139Z 306DEG 34KT 2775 8243 

HAIL...<.75IN
WIND...60MPH
 
$$

TBW

1 follow-up statement

422 
WWUS52 KTBW 102156
SVSTBW

Severe Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
556 PM EDT Sat Apr 10 2021

FLC057-081-102205-
/O.EXP.KTBW.SV.W.0005.000000T0000Z-210410T2200Z/
Manatee FL-Hillsborough FL-
556 PM EDT Sat Apr 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MANATEE AND
SOUTHEASTERN HILLSBOROUGH COUNTIES WILL EXPIRE AT 600 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds up to 50 mph are still possible with this thunderstorm.

LAT...LON 2771 8255 2786 8243 2768 8207 2746 8225
TIME...MOT...LOC 2155Z 306DEG 34KT 2766 8229 

$$

TBW

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 4:22 PM EDT	Special Marine Warning	TBW		68 min
Apr 10, 4:37 PM EDT	Special Weather Statement	TBW	Hernando, Hillsborough, Pasco, Pinellas, Sumter	53 min
Apr 10, 5:23 PM EDT	Special Marine Warning	TBW		67 min
Apr 10, 5:25 PM EDT	Special Weather Statement	TBW	DeSoto, Hardee, Hernando, Hillsborough, Manatee, Pasco and 4 more	95 min
Apr 10, 6:00 PM EDT	Special Marine Warning	TBW		60 min
Apr 10, 6:28 PM EDT	Special Weather Statement	TBW	Charlotte, DeSoto, Hardee, Highlands, Lee	47 min
Apr 10, 6:33 PM EDT	Severe Thunderstorm Warning	TBW	DeSoto, Manatee, Sarasota	27 min
Apr 10, 6:39 PM EDT	Special Marine Warning	TBW		66 min

Nearby

Severe Thunderstorm Warnings in Florida, 2021 Every severe thunderstorm warning 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.