Alert archive / Florida / Special Weather Statements in 2015

Special Weather Statement, NWS Tampa Bay, FL

April 20, 2015Sumter County, Florida

NWS Tampa Bay, FL issued this special weather statement at Apr 20, 2015, 2:49 PM EDT for Sumter County, Florida. It was in force for 26 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 20, 2015, 2:49 PM EDT (18:49 UTC)
Expired: Apr 20, 2015, 3:15 PM EDT
In force: 26 min
Issued by: NWS Tampa Bay, FL

County Sumter County, FL

The radar

The Tampa radar (KTBW), 85 km from the middle of the area, began a volume at 18:48 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 85 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: 337 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 1195 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 4:13 AM EDT	Beach Hazards Statement	TBW	Charlotte, Hillsborough, Lee, Manatee, Pinellas, Sarasota	16 hr
Apr 20, 2:05 PM EDT	Special Weather Statement	TBW	Okeechobee	40 min
Apr 20, 2:17 PM EDT	Special Weather Statement	TBW	Polk	28 min
Apr 20, 2:53 PM EDT	Special Weather Statement	TBW	Polk	52 min
Apr 20, 3:25 PM EDT	Areal Flood Advisory	TBW	Citrus, Hernando	2 hr
Apr 20, 3:32 PM EDT	Special Marine Warning	TBW		118 min
Apr 20, 3:53 PM EDT	Special Weather Statement	TBW	Highlands	37 min
Apr 20, 4:04 PM EDT	Special Weather Statement	TBW	Pasco	26 min
Apr 20, 4:25 PM EDT	Severe Thunderstorm Warning	TBW	Hillsborough, Manatee, Pinellas	50 min
Apr 20, 4:35 PM EDT	Tornado Warning	TBW	Pinellas	25 min
Apr 20, 5:02 PM EDT	Special Weather Statement	TBW	Polk	28 min
Apr 20, 5:13 PM EDT	Special Weather Statement	TBW	Hillsborough, Polk	47 min
Apr 20, 5:29 PM EDT	Special Marine Warning	TBW		61 min
Apr 20, 5:57 PM EDT	Special Weather Statement	TBW	DeSoto, Hardee, Manatee	33 min
Apr 20, 6:47 PM EDT	Special Weather Statement	TBW	DeSoto	28 min

Nearby

Special Weather Statements in Florida, 2015 Every special weather statement in 2015

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.