Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Tampa Bay, FL

December 21, 20214 counties in Florida

NWS Tampa Bay, FL issued this special weather statement at Dec 21, 2021, 8:08 AM EST for 4 counties in Florida. It was in force for 52 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: Dec 21, 2021, 8:08 AM EST (13:08 UTC)
Expired: Dec 21, 2021, 9:00 AM EST
In force: 52 min
Issued by: NWS Tampa Bay, FL
Hail: 0.00 in
Wind: 40

Counties Hillsborough County, FL, Manatee County, FL, Pinellas County, FL, Sarasota County, FL

The radar

The Tampa radar (KTBW), 11 km from the middle of the area, began a volume at 13:09 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, 1.1 hours before the alert went out and 11 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: 123 J/kg
Mixed-layer CIN: -150 J/kg
Mixed-layer LCL: 533 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 260 m²/s²
0-3 km storm-relative helicity: 340 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

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 Dec 21, 6:57 AM EST, 1 hour 11 minutes earlier.

Area forecast discussion, Dec 21, 6:57 AM EST, 1 hour 11 minutes before

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Hazardous weather outlook, Dec 21, 4:40 AM EST, 3 hours 28 minutes before

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In the hours before

Special weather statement, Dec 21, 8:08 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
Dec 21, 3:40 AM EST	Rip Current Statement	TBW	Charlotte, Hillsborough, Lee, Manatee, Pinellas, Sarasota	27 hr
Dec 21, 3:40 AM EST	High Surf Advisory	TBW	Charlotte, Hillsborough, Lee, Manatee, Pinellas, Sarasota	15 hr
Dec 21, 4:05 AM EST	Gale Warning	TBW		10 hr
Dec 21, 4:14 AM EST	Special Marine Warning	TBW		46 min
Dec 21, 5:03 AM EST	Special Marine Warning	TBW		42 min
Dec 21, 6:55 AM EST	Special Marine Warning	TBW		50 min
Dec 21, 7:46 AM EST	Special Marine Warning	TBW		59 min
Dec 21, 8:15 AM EST	Severe Thunderstorm Warning	TBW	Hillsborough, Manatee, Sarasota	30 min
Dec 21, 8:51 AM EST	Wind Advisory	TBW	Charlotte, DeSoto, Hardee, Highlands, Lee	4 hr

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.