Alert archive / Florida / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 21, NWS Tampa Bay, FL

April 26, 2023Polk County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Apr 26, 2023, 9:14 PM EDT for Polk County, Florida. It was in force for 31 min. 1 report 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: Apr 26, 2023, 9:14 PM EDT (01:14 UTC)
Expired: Apr 26, 2023, 9:45 PM EDT
In force: 31 min
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Polk County, FL

The radar

The Melbourne radar (KMLB), 81 km from the middle of the area, began a volume at 01:15 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
Apr 26, 9:15 PM EDT	HAIL 1	4 Ene Lake Wales, FL	QUARTER SIZE HAIL REPORT IN LAKE WALES AREA VIA HAM RADIO AND TRAINED SPOTTER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 26, 2:07 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 1.2 hours before the alert went out and 99 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: 905 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 1295 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.7

Open this sounding in Storm Lab

The text

As transmitted.

996 
WUUS52 KTBW 270114
SVRTBW
FLC105-270145-
/O.NEW.KTBW.SV.W.0021.230427T0114Z-230427T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tampa Bay Area Ruskin FL
914 PM EDT Wed Apr 26 2023

The National Weather Service in Ruskin has issued a

* Severe Thunderstorm Warning for...
  Southeastern Polk County in central Florida...

* Until 945 PM EDT.

* At 913 PM EDT, a severe thunderstorm was located near Lake Wales,
  moving southeast at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Lake Wales, Crooked Lake Park, Frostproof, Hillcrest Heights,
  Highland Park, Indian Lake Estates, Lake Wales Municipal Airport,
  Babson Park, and Waverly.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2765 8146 2765 8147 2792 8165 2803 8149
      2787 8130 2786 8131 2786 8129 2781 8123
TIME...MOT...LOC 0113Z 322DEG 17KT 2792 8152 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

TBW

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 8:17 PM EDT	Severe Thunderstorm Warning	TBW	Polk	28 min
Apr 26, 8:41 PM EDT	Severe Thunderstorm Warning	TBW	Polk	34 min
Apr 26, 9:45 PM EDT	Severe Thunderstorm Warning	TBW	Highlands, Polk	15 min
Apr 26, 10:04 PM EDT	Severe Thunderstorm Warning	TBW	Sumter	41 min
Apr 26, 10:50 PM EDT	Special Weather Statement	TBW	Sumter	25 min
Apr 27, 2:51 PM EDT	Special Weather Statement	TBW	Alachua	24 min
Apr 27, 7:15 PM EDT	Special Marine Warning	TBW		90 min
Apr 27, 7:48 PM EDT	Special Weather Statement	TBW	Levy	42 min

Nearby

Severe Thunderstorm Warnings in Florida, 2023 Every severe thunderstorm warning in 2023

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.