Alert archive / Florida / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 21, NWS Tampa Bay, FL

May 24, 2017Hillsborough County, Manatee County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at May 24, 2017, 2:42 PM EDT for Hillsborough County, Manatee County, Florida. It was in force for 28 min. 3 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: May 24, 2017, 2:42 PM EDT (18:42 UTC)
Expired: May 24, 2017, 3:10 PM EDT
In force: 28 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), 2 km from the middle of the area, began a volume at 18:43 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

Time	Report	Where	Remark
May 24, 2:47 PM EDT	TSTM WND DMG	4 Se Bradenton, FL	HAM RADIO OPERATOR REPORTED LARGE TREE DOWN IN THE ONECO AREA.
May 24, 2:48 PM EDT	TSTM WND DMG	6 E Bradenton, FL	EMERGENCY MANAGER REPORTED A LARGE TREE FELL ON A HOUSE CAUSING MINOR DAMAGE ON THE 2200 BLOCK OF 57TH EAST IN BRADENTON.
May 24, 3:05 PM EDT	TSTM WND DMG	2 N Brandon, FL	EMERGENCY MANAGER REPORTED MULTIPLE TREES DOWN ON THE CORNER OF NORTH PARSONS AVE AND WINDHORST ROAD.

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, 6.7 hours before the alert went out and 2 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: 1355 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 694 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 203 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 11.3

Open this sounding in Storm Lab

The text

As transmitted.

078 
WUUS52 KTBW 241842
SVRTBW
FLC057-081-241930-
/O.NEW.KTBW.SV.W.0021.170524T1842Z-170524T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tampa Bay Area Ruskin FL
242 PM EDT WED MAY 24 2017

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 330 PM EDT

* At 241 PM EDT, severe thunderstorms were located along a line
  extending from near Macdill Air Force Base to near Lakewood Ranch,
  moving east at 35 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Tampa, Bradenton, Plant City, Fish Hawk, Brandon, Ellenton, Greater
  Sun Center, Palm River-Clair Mel, Macdill Air Force Base,
  Riverview, Ruskin, Parrish, Memphis, Alafia River State Park, Lake
  Manatee State Park, Samoset, Fort Lonesome, Plant City Airport,
  Boyette and Wimauma.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Ruskin.

Small hail and damaging winds are likely with these storms. Move 
indoors immediately.

&&

LAT...LON 2777 8254 2778 8253 2779 8254 2788 8254
      2804 8206 2762 8206 2747 8229 2742 8254
      2765 8255
TIME...MOT...LOC 1841Z 251DEG 29KT 2786 8246 2745 8246 

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

TBW

1 follow-up statement

526 
WWUS52 KTBW 241910
SVSTBW

Severe Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
310 PM EDT WED MAY 24 2017

FLC057-081-241918-
/O.CAN.KTBW.SV.W.0021.000000T0000Z-170524T1930Z/
Manatee FL-Hillsborough FL-
310 PM EDT WED MAY 24 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MANATEE AND
SOUTHEASTERN HILLSBOROUGH COUNTIES IS CANCELLED...
            
The storm which prompted the warning have weakened below severe 
limits, and no longer pose an immediate threat to life or property.
Therefore the warning has been cancelled.  However gusty winds are
and heavy rainfall are still possible with this storm across 
inland Manatee and southeast Hillsborough counties.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Ruskin.

LAT...LON 2777 8254 2778 8253 2779 8254 2788 8254
      2804 8206 2762 8206 2747 8229 2742 8254
      2765 8255
TIME...MOT...LOC 1907Z 251DEG 29KT 2793 8223 2752 8223 

$$

TBW

The office that day

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

Issued	Product	Office	Counties	Lasted
May 24, 4:16 AM EDT	Coastal Flood Statement	TBW	Citrus, Hernando, Hillsborough, Levy, Manatee, Pasco and 2 more	28 hr
May 24, 4:16 AM EDT	Coastal Flood Warning	TBW	Citrus, Levy	13 hr
May 24, 4:20 AM EDT	Lake Wind Advisory	TBW	Charlotte, Citrus, DeSoto, Hardee, Hernando, Highlands and 9 more	18 hr
May 24, 11:18 AM EDT	Special Weather Statement	TBW	Levy	57 min
May 24, 11:51 AM EDT	Severe Thunderstorm Warning	TBW	Levy	39 min
May 24, 1:06 PM EDT	Special Marine Warning	TBW		84 min
May 24, 1:37 PM EDT	Special Weather Statement	TBW	Pasco, Pinellas	53 min
May 24, 1:52 PM EDT	Special Marine Warning	TBW		38 min
May 24, 2:19 PM EDT	Special Weather Statement	TBW	Hillsborough, Manatee, Sumter	56 min
May 24, 2:28 PM EDT	Special Marine Warning	TBW		2 hr
May 24, 2:53 PM EDT	Special Weather Statement	TBW	Sarasota	52 min
May 24, 3:18 PM EDT	Special Weather Statement	TBW	Polk	42 min
May 24, 3:49 PM EDT	Special Weather Statement	TBW	Charlotte, DeSoto, Hardee, Highlands	56 min
May 24, 4:47 PM EDT	Special Weather Statement	TBW	Charlotte, DeSoto, Highlands	58 min
May 24, 5:13 PM EDT	Special Marine Warning	TBW		32 min
May 24, 5:20 PM EDT	Special Weather Statement	TBW	Lee	40 min

Nearby

Severe Thunderstorm Warnings in Florida, 2017 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.