Alert archive / Georgia / Areal Flood Warnings in 2020

Areal Flood Warning 13, NWS Tallahassee, FL

September 17, 20208 counties in Georgia

NWS Tallahassee, FL issued this areal flood warning at Sep 17, 2020, 2:17 AM EDT for 8 counties in Georgia. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 17, 2020, 2:17 AM EDT (06:17 UTC)
Expired: Sep 17, 2020, 10:19 AM EDT
In force: 8 hr
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Flood severity: None

Counties Calhoun County, GA, Clay County, GA, Dougherty County, GA, Early County, GA, Lee County, GA, Quitman County, GA, Randolph County, GA, Terrell County, GA

The radar

The Ft Rucker radar (KEOX), 81 km from the middle of the area, began a volume at 06:20 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 6.3 hours before the alert went out and 192 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 540 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 263 m²/s²
0-3 km storm-relative helicity: 345 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 Tallahassee, FL wrote its last area forecast discussion before this areal flood warning went out at Sep 17, 1:24 AM EDT, 53 minutes earlier.

Area forecast discussion, Sep 17, 1:24 AM EDT, 53 minutes before

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In the hours before

Local storm report, Sep 16, 8:27 PM EDT, 5 hours 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
827 PM EDT WED SEP 16 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0824 PM     HEAVY RAIN       3 SW BELLWOOD           31.14N 85.83W
09/16/2020  E14.00 INCH      GENEVA             AL   TRAINED SPOTTER

&&

MCD

Local storm report, Sep 16, 8:44 PM EDT, 5 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
844 PM EDT WED SEP 16 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0450 PM     TORNADO          3 NE MORVEN             30.98N 83.46W
09/16/2020                   BROOKS             GA   TRAINED SPOTTER

&&

MCD

Local storm report, Sep 16, 11:39 PM EDT, 2 hours 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1139 PM EDT WED SEP 16 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0930 PM     NON-TSTM WND DMG 3 SW SOUTHWEST GA REGIO 31.50N 84.24W
09/16/2020                   DOUGHERTY          GA   LAW ENFORCEMENT

            TREE DOWN.

&&

CJM

Local storm report, Sep 16, 11:44 PM EDT, 2 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1144 PM EDT WED SEP 16 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0930 PM     FLASH FLOOD      1 E ALBANY              31.58N 84.16W
09/16/2020                   DOUGHERTY          GA   LAW ENFORCEMENT

            AT LEAST 10 ROADS CLOSED DUE TO FLOODING.

&&

CJM

Local storm report, Sep 16, 11:52 PM EDT, 2 hours 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1152 PM EDT WED SEP 16 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1100 PM     FLASH FLOOD      GENEVA                  31.04N 85.88W
09/16/2020                   GENEVA             AL   EMERGENCY MNGR

            ALL ROADS AND BRIDGES IN GENEVA COUNTY
            CLOSED DUE TO FLOODING.

&&

CJM

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 16, 8:58 PM EDT	Special Marine Warning	TAE		2 hr
Sep 16, 10:05 PM EDT	River Flood Warning	TAE	Leon, Wakulla	4 days
Sep 16, 10:09 PM EDT	River Flood Warning	TAE	Leon, Liberty, Wakulla	60 hr
Sep 16, 10:38 PM EDT	Areal Flood Warning	TAE	Bay, Calhoun, Holmes, Walton, Washington	12 hr
Sep 16, 11:29 PM EDT	Areal Flood Warning	TAE	Calhoun, Gadsden, Gulf, Jackson, Liberty	11 hr
Sep 16, 11:48 PM EDT	Tornado Warning	TAE	Taylor	10 min
Sep 17, 12:01 AM EDT	Areal Flood Warning	TAE	Walton	10 hr
Sep 17, 12:33 AM EDT	River Flood Warning	TAE	Gadsden, Jackson	11 hr
Sep 17, 12:37 AM EDT	River Flood Warning	TAE	Calhoun, Franklin, Gulf, Liberty	8 days
Sep 17, 10:38 AM EDT	Areal Flood Warning	TAE	Bay, Calhoun, Gulf, Holmes, Jackson, Walton and 1 more	33 hr
Sep 16, 10:18 PM EDT	Areal Flood Warning	TAE	Baker, Colquitt, Early, Miller, Mitchell	12 hr
Sep 16, 11:38 PM EDT	Areal Flood Warning	TAE	Grady, Thomas	11 hr
Sep 17, 12:28 AM EDT	River Flood Warning	TAE	Terrell, Webster	34 hr
Sep 17, 12:31 AM EDT	River Flood Warning	TAE	Lee	58 hr
Sep 17, 2:36 AM EDT	Areal Flood Warning	TAE	Colquitt, Tift, Worth	8 hr
Sep 17, 2:48 AM EDT	Areal Flood Warning	TAE	Ben Hill, Berrien, Cook, Irwin, Tift, Turner	7 hr
Sep 17, 3:31 AM EDT	Areal Flood Warning	TAE	Decatur, Miller, Seminole	7 hr
Sep 17, 11:53 AM EDT	River Flood Warning	TAE	Dougherty	22 hr
Sep 17, 1:22 PM EDT	River Flood Warning	TAE	Lee	50 hr
Sep 16, 11:35 PM EDT	Areal Flood Warning	TAE	Geneva	11 hr
Sep 16, 11:51 PM EDT	Areal Flood Warning	TAE	Coffee, Dale, Houston	11 hr
Sep 17, 3:33 AM EDT	Areal Flood Warning	TAE	Henry	7 hr

Nearby

Areal Flood Warnings in Georgia, 2020 Every areal flood warning in 2020

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.