Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Tampa Bay, FL

February 7, 2021Polk County, Florida

NWS Tampa Bay, FL issued this special weather statement at Feb 7, 2021, 6:16 AM EST for Polk County, Florida. It was in force for 44 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 7, 2021, 6:16 AM EST (11:16 UTC)
Expired: Feb 7, 2021, 7:00 AM EST
In force: 44 min
Issued by: NWS Tampa Bay, FL

County Polk County, FL

The radar

The Tampa radar (KTBW), 84 km from the middle of the area, began a volume at 11:18 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 00:00Z, 11.3 hours before the alert went out and 84 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: 1198 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 813 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 249 m²/s²
0-3 km storm-relative helicity: 286 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 7.7

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tampa Bay, FL wrote its last area forecast discussion before this special weather statement went out at Feb 7, 3:32 AM EST, 2 hours 44 minutes earlier.

Area forecast discussion, Feb 7, 3:32 AM EST, 2 hours 44 minutes before

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In the hours before

Special weather statement, Feb 7, 1:43 AM EST, 4 hours 33 minutes before

Special Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
143 AM EST Sun Feb 7 2021

FLZ043-142-242-070715-
Coastal Citrus FL-Inland Citrus FL-Sumter FL-
143 AM EST Sun Feb 7 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL CITRUS AND NORTHWESTERN
SUMTER COUNTIES UNTIL 215 AM EST...

At 143 AM EST, Doppler radar was tracking a strong thunderstorm over
Crystal River Airport, or near Homosassa Springs, moving northeast at
55 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Beverly Hills, Homosassa Springs, Inverness Highlands North, Crystal
River Airport, Black Diamond, Homosassa, Hernando, Arbor Lakes,
Lecanto, Citronelle, Crystal Oaks, River Lakes Manor, Citrus Springs,
Pine Ridge, Citrus Hills, Stokes Ferry and Brent Wood.

A Tornado Watch remains in effect until 700 AM EST for central and
west central Florida.

LAT...LON 2904 8245 2901 8242 2902 8240 2900 8238
      2900 8236 2899 8236 2898 8232 2896 8231
      2896 8220 2892 8216 2876 8268 2889 8273
TIME...MOT...LOC 0643Z 242DEG 47KT 2885 8261

TBW

Special weather statement, Feb 7, 1:56 AM EST, 4 hours 20 minutes before

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Local storm report, Feb 7, 4:28 AM EST, 1 hour 48 minutes before

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Special weather statement, Feb 7, 4:31 AM EST, 1 hour 45 minutes before

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Special weather statement, Feb 7, 4:41 AM EST, 1 hour 35 minutes before

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Special weather statement, Feb 7, 6:16 AM EST, 0 minutes before

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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
Feb 6, 10:10 PM EST	Marine Dense Fog Advisory	TBW		12 hr
Feb 6, 10:44 PM EST	Special Marine Warning	TBW		46 min
Feb 6, 11:34 PM EST	Special Weather Statement	TBW	Hardee	41 min
Feb 6, 11:47 PM EST	Special Marine Warning	TBW		43 min
Feb 6, 11:53 PM EST	Special Weather Statement	TBW	Levy	22 min
Feb 7, 12:25 AM EST	Special Weather Statement	TBW	Citrus	35 min
Feb 7, 1:43 AM EST	Special Weather Statement	TBW	Citrus	32 min
Feb 7, 1:56 AM EST	Special Weather Statement	TBW	Manatee, Sarasota	34 min
Feb 7, 4:07 AM EST	Special Marine Warning	TBW		23 min
Feb 7, 4:24 AM EST	Special Marine Warning	TBW		36 min
Feb 7, 4:31 AM EST	Special Weather Statement	TBW	Hernando, Sumter	44 min
Feb 7, 4:41 AM EST	Special Weather Statement	TBW	Pinellas	34 min
Feb 7, 4:58 AM EST	Special Marine Warning	TBW		47 min
Feb 7, 5:34 AM EST	Areal Flood Advisory	TBW	Hillsborough, Pinellas	116 min
Feb 7, 6:07 AM EST	Special Marine Warning	TBW		38 min
Feb 7, 6:39 AM EST	Special Weather Statement	TBW	Manatee	51 min
Feb 7, 6:51 AM EST	Special Marine Warning	TBW		39 min
Feb 7, 7:14 AM EST	Special Weather Statement	TBW	Hardee, Manatee, Polk	46 min
Feb 7, 9:30 AM EST	Special Weather Statement	TBW	Highlands	45 min

Nearby

Special Weather Statements in Florida, 2021 Every special weather statement 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.