Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 1, NWS Tampa Bay, FL

February 6, 2021Levy County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Feb 6, 2021, 6:16 PM EST for Levy County, Florida. It was in force for 29 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: Feb 6, 2021, 6:16 PM EST (23:16 UTC)
Expired: Feb 6, 2021, 6:45 PM EST
In force: 29 min
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Levy County, FL

The radar

The Jacksonville radar (KJAX), 177 km from the middle of the area, began a volume at 23:17 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 watch it was issued in

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

Issued	Product	Office	Lasted
Feb 6, 4:21 PM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 11.3 hours before the alert went out and 179 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: 845 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 370 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

192 
WUUS52 KTBW 062316
SVRTBW
FLC075-062345-
/O.NEW.KTBW.SV.W.0001.210206T2316Z-210206T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tampa Bay Area Ruskin FL
616 PM EST Sat Feb 6 2021

The National Weather Service in Ruskin has issued a

* Severe Thunderstorm Warning for...
  Central Levy County in northern Florida...

* Until 645 PM EST.

* At 615 PM EST, a severe thunderstorm was located 14 miles south of
  Fowlers Bluff, or 21 miles south of Chiefland, moving northeast at
  50 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Otter Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight EST for northern
Florida.

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

&&

LAT...LON 2945 8278 2922 8262 2910 8300 2917 8307
      2922 8310
TIME...MOT...LOC 2315Z 247DEG 48KT 2918 8298 

HAIL...0.75IN
WIND...60MPH
 
$$

TBW

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 6, 3:57 PM EST	Special Weather Statement	TBW	Levy	33 min
Feb 6, 4:21 PM EST	Special Weather Statement	TBW	Citrus	39 min
Feb 6, 5:21 PM EST	Special Marine Warning	TBW		39 min
Feb 6, 6:04 PM EST	Special Weather Statement	TBW	Levy	56 min
Feb 6, 6:41 PM EST	Severe Thunderstorm Warning	TBW	Levy	34 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.