Alert archive / Georgia / Flood Watches in 2018

Flood Watch 1, NWS Tallahassee, FL

February 11, 20188 counties in Florida; 14 counties in Georgia; 5 counties in Alabama

NWS Tallahassee, FL issued this flood watch at Feb 11, 2018, 12:40 AM CST for 8 counties in Florida; 14 counties in Georgia; 5 counties in Alabama. It was in force for 29 hr.

The area

The counties it named.

The facts

Issued: Feb 11, 2018, 12:40 AM CST (06:40 UTC)
Expired: Feb 12, 2018, 6:00 AM CST
In force: 29 hr
Issued by: NWS Tallahassee, FL
Flood severity: None

All 27 counties

Coffee County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Bay County, FL, Calhoun County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Calhoun County, GA, Clay County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Lee County, GA, Miller County, GA, Mitchell County, GA, Quitman County, GA, Randolph County, GA, Seminole County, GA, Terrell County, GA, Worth County, GA

The radar

The Ft Rucker radar (KEOX), 55 km from the middle of the area, began a volume at 06:42 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 00:00Z, 6.7 hours before the alert went out and 107 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: 285 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 519 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 171 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flood watch 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 flood watch went out at Feb 10, 11:19 PM CST, 1 hour 21 minutes earlier.

Area forecast discussion, Feb 10, 11:19 PM CST, 1 hour 21 minutes before

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In the hours before

Special weather statement, Feb 10, 6:42 PM CST, 5 hours 58 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 10, 6:11 PM CST	Special Marine Warning	TAE		49 min
Feb 10, 6:42 PM CST	Special Weather Statement	TAE	Bay	48 min
Feb 10, 6:55 PM CST	Special Marine Warning	TAE		50 min
Feb 10, 7:09 PM CST	Special Marine Warning	TAE		66 min
Feb 10, 8:01 PM CST	Special Marine Warning	TAE		59 min
Feb 11, 12:05 AM CST	Areal Flood Advisory	TAE	Walton	115 min
Feb 11, 1:54 AM CST	Areal Flood Advisory	TAE	Walton	2 hr
Feb 11, 2:02 AM CST	Special Marine Warning	TAE		118 min
Feb 11, 2:48 AM CST	Severe Thunderstorm Warning	TAE	Bay, Holmes, Jackson, Walton, Washington	72 min
Feb 11, 2:57 AM CST	Tornado Warning	TAE	Holmes	33 min
Feb 11, 3:21 AM CST	Tornado Warning	TAE	Holmes, Jackson	39 min
Feb 11, 3:58 AM CST	Tornado Warning	TAE	Jackson	47 min
Feb 11, 4:30 AM CST	River Flood Warning	TAE	Walton	52 hr
Feb 11, 4:37 AM CST	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Jackson, Liberty	37 min
Feb 11, 5:50 AM CST	Flash Flood Warning	TAE	Walton	5 hr
Feb 11, 7:17 AM CST	Special Marine Warning	TAE		118 min
Feb 11, 9:19 AM CST	Rip Current Statement	TAE	Gulf	13 hr
Feb 11, 9:56 AM CST	Areal Flood Advisory	TAE	Bay, Holmes, Jackson, Walton, Washington	2 hr
Feb 11, 10:32 AM CST	Areal Flood Advisory	TAE	Bay, Walton, Washington	118 min
Feb 11, 12:01 PM CST	Areal Flood Advisory	TAE	Bay, Calhoun, Holmes, Jackson, Walton, Washington	119 min
Feb 11, 12:04 PM CST	Special Marine Warning	TAE		26 min
Feb 11, 12:21 PM CST	Areal Flood Advisory	TAE	Walton	114 min
Feb 11, 12:25 PM CST	Special Marine Warning	TAE		95 min
Feb 11, 1:26 PM CST	River Flood Warning	TAE	Walton, Washington	9 days
Feb 11, 1:48 PM CST	River Flood Warning	TAE	Calhoun	3 days
Feb 11, 1:50 PM CST	River Flood Warning	TAE	Holmes, Washington	5 days
Feb 11, 1:50 PM CST	Special Marine Warning	TAE		85 min
Feb 11, 1:54 PM CST	Areal Flood Advisory	TAE	Bay, Calhoun, Gulf	3 hr
Feb 11, 2:15 PM CST	Areal Flood Advisory	TAE	Walton	3 hr
Feb 11, 2:42 PM CST	Areal Flood Advisory	TAE	Bay, Calhoun, Franklin, Gulf, Liberty, Wakulla	3 hr
Feb 11, 3:11 PM CST	Special Marine Warning	TAE		64 min
Feb 11, 4:26 PM CST	Areal Flood Advisory	TAE	Holmes, Jackson, Walton, Washington	3 hr
Feb 11, 5:14 PM CST	Areal Flood Advisory	TAE	Walton	3 hr
Feb 11, 8:03 AM CST	Tornado Warning	TAE	Decatur, Grady, Mitchell	27 min
Feb 11, 9:00 AM CST	Special Weather Statement	TAE	Colquitt	45 min
Feb 11, 3:46 AM CST	Tornado Warning Tornado observed	TAE	Houston	32 min
Feb 11, 7:42 AM CST	River Flood Warning	TAE	Dale	63 hr
Feb 11, 7:42 AM CST	River Flood Warning	TAE	Geneva	4 days

Nearby

Flood Watches in Georgia, 2018 Flood Watches in Florida, 2018 Flood Watches in Alabama, 2018 Every flood watch in 2018

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.