Alert archive / Florida / Flash Flood Warnings in 2023

Flash Flood Warning 51, NWS Tallahassee, FL

August 30, 2023Madison County, Taylor County, Florida

NWS Tallahassee, FL issued this flash flood warning at Aug 30, 2023, 9:01 AM EDT for Madison County, Taylor County, Florida. 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: Aug 30, 2023, 9:01 AM EDT (13:01 UTC)
Expired: Aug 30, 2023, 11:54 AM EDT
In force: 3 hr
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Flood severity: None

Counties Madison County, FL, Taylor County, FL

The radar

The Tallahassee radar (KTLH), 78 km from the middle of the area, began a volume at 13:02 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 12:00Z, 1.0 hours before the alert went out and 179 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: 888 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 600 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 361 m²/s²
0-3 km storm-relative helicity: 421 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 16.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash 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 flash flood warning went out at Aug 30, 7:54 AM EDT, 1 hour 7 minutes earlier.

Area forecast discussion, Aug 30, 7:54 AM EDT, 1 hour 7 minutes before

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In the hours before

Local storm report, Aug 30, 8:41 AM EDT, 20 minutes before

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Local storm report, Aug 30, 8:43 AM EDT, 18 minutes before

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Local storm report, Aug 30, 8:45 AM EDT, 16 minutes before

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Local storm report, Aug 30, 8:52 AM EDT, 9 minutes before

Preliminary Local Storm Report
National Weather Service Tallahassee FL
852 AM EDT Wed Aug 30 2023

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

0840 AM     Tropical Cyclone 2 E Macon Community Par 30.49N 84.25W
08/30/2023                   Leon               FL   Mesonet

            Mesonet station 1296W 2.0 SW Killearn
            Estates (WEATHERSTEM) reported a gust of 53
            MPH.

&&

rh

Local storm report, Aug 30, 8:55 AM EDT, 6 minutes before

Preliminary Local Storm Report
National Weather Service Tallahassee FL
855 AM EDT Wed Aug 30 2023

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

0845 AM     Tropical Cyclone 4 SSW Kinderlou         30.74N 83.39W
08/30/2023                   Lowndes            GA   Mesonet

            Ambient Station Redland reported a gust of
            60 MPH.

&&

rh

Local storm report, Aug 30, 9:00 AM EDT, 1 minute before

Preliminary Local Storm Report
National Weather Service Tallahassee FL
900 AM EDT Wed Aug 30 2023

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

0859 AM     Tropical Cyclone 2 W Old Town            29.60N 83.02W
08/30/2023                   Dixie              FL   Dept of Highways

            Tree down blocking northbound lanes of US
            Highway 19 in Old Town.

&&

JPC

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 30, 6:09 AM EDT	Extreme Wind Warning	TAE	Dixie, Taylor	3 hr
Aug 30, 7:20 AM EDT	Extreme Wind Warning	TAE	Dixie, Lafayette, Taylor	3 hr
Aug 30, 8:08 AM EDT	Extreme Wind Warning	TAE	Madison, Taylor	3 hr
Aug 30, 10:17 AM EDT	Flash Flood Warning	TAE	Jefferson, Madison	2 hr
Aug 30, 11:32 AM EDT	Small Craft Advisory	TAE		11 hr
Aug 30, 11:54 AM EDT	Areal Flood Advisory	TAE	Madison, Taylor	2 hr
Aug 30, 12:43 PM EDT	Areal Flood Advisory	TAE	Jefferson, Madison	106 min
Aug 30, 4:58 PM EDT	Coastal Flood Advisory	TAE	Dixie, Jefferson, Taylor, Wakulla	27 hr
Aug 30, 9:35 AM EDT	Flash Flood Warning Emergency	TAE	Brooks, Lowndes	5 hr
Aug 30, 10:24 AM EDT	Flash Flood Warning	TAE	Lanier	3 hr
Aug 30, 10:44 AM EDT	Flash Flood Warning	TAE	Berrien, Colquitt, Cook	3 hr
Aug 30, 12:25 PM EDT	Areal Flood Advisory	TAE	Ben Hill, Irwin, Tift	35 min
Aug 30, 1:00 PM EDT	Flash Flood Warning	TAE	Ben Hill, Irwin, Tift	3 hr
Aug 30, 1:28 PM EDT	Areal Flood Advisory	TAE	Lanier	2 hr
Aug 30, 1:43 PM EDT	Areal Flood Advisory	TAE	Berrien, Colquitt, Cook	2 hr

Nearby

Flash Flood Warnings in Florida, 2023 Every flash flood warning in 2023

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.