Alert archive / Georgia / Areal Flood Warnings in 2019

Areal Flood Warning 4, NWS Atlanta, GA

February 23, 2019Catoosa County, Dade County, Walker County, Georgia

NWS Atlanta, GA issued this areal flood warning at Feb 23, 2019, 7:47 AM EST for Catoosa County, Dade County, Walker County, Georgia. It was in force for 3 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: Feb 23, 2019, 7:47 AM EST (12:47 UTC)
Expired: Feb 23, 2019, 10:45 AM EST
In force: 3 hr
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Flood severity: None

Counties Catoosa County, GA, Dade County, GA, Walker County, GA

The radar

The Northeast Alabama radar (KHTX), 71 km from the middle of the area, began a volume at 12:48 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

Nashville Metro, TN (KBNA), launched 12:00Z, 0.8 hours before the alert went out and 185 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: 553 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: -81 m²/s²
0-3 km storm-relative helicity: 94 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 Atlanta, GA wrote its last area forecast discussion before this areal flood warning went out at Feb 23, 6:30 AM EST, 1 hour 17 minutes earlier.

Area forecast discussion, Feb 23, 6:30 AM EST, 1 hour 17 minutes before

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Hazardous weather outlook, Feb 23, 3:05 AM EST, 4 hours 42 minutes before

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The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 22, 8:09 PM EST	River Flood Warning	FFC	Catoosa	4 hr
Feb 23, 2:42 PM EST	Wind Advisory	FFC	Baldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 84 more	28 hr

Nearby

Areal Flood Warnings in Georgia, 2019 Every areal flood warning in 2019

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.