Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Tampa Bay, FL

June 20, 2021Levy County, Florida

NWS Tampa Bay, FL issued this special weather statement at Jun 20, 2021, 10:42 AM EDT for Levy County, Florida. It was in force for 48 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: Jun 20, 2021, 10:42 AM EDT (14:42 UTC)
Expired: Jun 20, 2021, 11:30 AM EDT
In force: 48 min
Issued by: NWS Tampa Bay, FL

County Levy County, FL

The radar

The Jacksonville radar (KJAX), 144 km from the middle of the area, began a volume at 14:46 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

Jacksonville, FL (KJAX), launched 12:00Z, 2.7 hours before the alert went out and 146 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: 1078 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 938 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 170 m²/s²
0-3 km storm-relative helicity: 197 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 9.6

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 Jun 20, 9:12 AM EDT, 1 hour 30 minutes earlier.

Area forecast discussion, Jun 20, 9:12 AM EDT, 1 hour 30 minutes before

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In the hours before

Special weather statement, Jun 20, 10:42 AM EDT, 0 minutes before

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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.