Alert archive / Florida / Areal Flood Advisories in 2021

Areal Flood Advisory 101, NWS Tallahassee, FL

August 16, 2021Franklin County, Liberty County, Wakulla County, Florida

NWS Tallahassee, FL issued this areal flood advisory at Aug 16, 2021, 12:13 PM EDT for Franklin County, Liberty County, Wakulla County, Florida. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Aug 16, 2021, 12:13 PM EDT (16:13 UTC)
Expired: Aug 16, 2021, 4:15 PM EDT
In force: 4 hr
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon

Counties Franklin County, FL, Liberty County, FL, Wakulla County, FL

The radar

The Tallahassee radar (KTLH), 50 km from the middle of the area, began a volume at 16:12 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 4.2 hours before the alert went out and 52 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: 368 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 754 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 30 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 advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tallahassee, FL wrote its last area forecast discussion before this areal flood advisory went out at Aug 16, 6:01 AM EDT, 6 hours 12 minutes earlier.

Area forecast discussion, Aug 16, 6:01 AM EDT, 6 hours 12 minutes before

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In the hours before

Local storm report, Aug 16, 11:31 AM EDT, 42 minutes before

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Local storm report, Aug 16, 11:32 AM EDT, 41 minutes before

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Local storm report, Aug 16, 11:33 AM EDT, 40 minutes before

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Local storm report, Aug 16, 11:34 AM EDT, 39 minutes before

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Local storm report, Aug 16, 11:40 AM EDT, 33 minutes before

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        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 16, 9:42 AM EDT	Special Marine Warning	TAE		48 min
Aug 16, 10:27 AM EDT	Special Marine Warning	TAE		63 min
Aug 16, 11:01 AM EDT	River Flood Warning	TAE	Calhoun	23 hr
Aug 16, 12:08 PM EDT	Special Marine Warning	TAE		97 min
Aug 16, 12:24 PM EDT	Areal Flood Advisory	TAE	Franklin, Gulf	4 hr
Aug 16, 3:19 PM EDT	Flash Flood Warning	TAE	Bay, Calhoun, Gulf, Washington	6 hr
Aug 16, 3:20 PM EDT	Special Marine Warning	TAE		43 min
Aug 16, 4:44 PM EDT	Special Marine Warning	TAE		46 min
Aug 16, 4:51 PM EDT	Flash Flood Warning	TAE	Calhoun, Gulf, Jackson, Liberty, Washington	6 hr
Aug 16, 5:01 PM EDT	Special Weather Statement	TAE	Madison	44 min
Aug 16, 5:17 PM EDT	Areal Flood Advisory	TAE	Holmes, Walton, Washington	4 hr
Aug 16, 5:18 PM EDT	Special Marine Warning	TAE		87 min
Aug 16, 5:47 PM EDT	Flash Flood Warning	TAE	Holmes, Washington	5 hr
Aug 16, 6:19 PM EDT	Flash Flood Warning	TAE	Holmes, Jackson, Washington	6 hr
Aug 16, 1:12 PM EDT	Special Weather Statement	TAE	Ben Hill, Berrien, Irwin, Tift	48 min
Aug 16, 1:56 PM EDT	Special Weather Statement	TAE	Ben Hill, Tift, Turner, Worth	34 min
Aug 16, 2:32 PM EDT	Special Weather Statement	TAE	Dougherty, Lee, Turner, Worth	58 min
Aug 16, 6:33 PM EDT	Areal Flood Advisory	TAE	Baker, Decatur, Early, Grady, Miller, Mitchell and 1 more	4 hr
Aug 16, 7:19 PM EDT	Areal Flood Advisory	TAE	Early	4 hr
Aug 16, 7:52 PM EDT	Flash Flood Warning	TAE	Dale, Geneva, Henry, Houston	4 hr

Nearby

Areal Flood Advisories in Florida, 2021 Every areal flood advisory 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.