Alert archive / Florida / Areal Flood Warnings in 2021

Areal Flood Warning 6, NWS Tampa Bay, FL

July 8, 2021Hernando County, Sumter County, Florida

NWS Tampa Bay, FL issued this areal flood warning at Jul 8, 2021, 10:26 PM EDT for Hernando County, Sumter County, Florida. It was in force for 4 days. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 8, 2021, 10:26 PM EDT (02:26 UTC)
Expired: Jul 13, 2021, 12:00 AM EDT
In force: 4 days
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon
Flood severity: None

Counties Hernando County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 104 km from the middle of the area, began a volume at 02:30 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 00:00Z, 2.4 hours before the alert went out and 215 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: 1074 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 1335 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning 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 areal flood warning went out at Jul 8, 8:02 PM EDT, 2 hours 24 minutes earlier.

Area forecast discussion, Jul 8, 8:02 PM EDT, 2 hours 24 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
Jul 8, 10:11 PM EDT	River Flood Warning	TBW	Pasco	49 hr
Jul 9, 5:19 AM EDT	Beach Hazards Statement	TBW	Pinellas	17 hr

Nearby

Areal Flood Warnings in Florida, 2021 Every areal flood 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.