Alert archive / Florida / Flash Flood Warnings in 2024

Flash Flood Warning 55, NWS Tallahassee, FL

July 20, 2024Gadsden County, Leon County, Florida

NWS Tallahassee, FL issued this flash flood warning at Jul 20, 2024, 3:15 PM EDT for Gadsden County, Leon County, Florida. It was in force for 90 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 20, 2024, 3:15 PM EDT (19:15 UTC)
Expired: Jul 20, 2024, 4:45 PM EDT
In force: 90 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Flood severity: None

Counties Gadsden County, FL, Leon County, FL

The radar

The Tallahassee radar (KTLH), 18 km from the middle of the area, began a volume at 19:15 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, 7.3 hours before the alert went out and 263 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: 1297 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 787 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 62 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 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 Jul 20, 1:40 PM EDT, 1 hour 35 minutes earlier.

Area forecast discussion, Jul 20, 1:40 PM EDT, 1 hour 35 minutes before

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In the hours before

Special weather statement, Jul 20, 11:02 AM EDT, 4 hours 13 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
1002 AM CDT Sat Jul 20 2024

FLZ007>009-108-201545-
Central Walton FL-Holmes FL-South Walton FL-North Walton FL-
1002 AM CDT Sat Jul 20 2024

...A STRONG THUNDERSTORM WILL IMPACT WALTON AND SOUTHWESTERN HOLMES
COUNTIES THROUGH 1045 AM CDT...

At 1001 AM CDT, Doppler radar was tracking a strong thunderstorm 7
miles south of Eglin Air Force Base, or 8 miles north of Santa Rosa
Beach, moving northeast at 30 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Santa Rosa Beach, De Funiak Springs, Eglin Air Force Base, Union,
Liberty, Freeport, Paxton, Ponce De Leon, Westville, Pond Creek,
Oakwood Hills, Cluster Springs, Gaskin, Portland, Alpine Heights,
Villa Tasso, Darlington, Blue Mountain Beach, Arrant Settlement, and
De Funiak Spring Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3038 8633 3045 8631 3048 8632 3046 8639
      3099 8639 3099 8604 3078 8584 3042 8612
      3042 8614 3043 8612 3044 8614 3044 8616
      3048 8614 3046 8619 3042 8622 3040 8621
      3038 8615 3033 8619 3038 8640 3040 8639
TIME...MOT...LOC 1501Z 211DEG 28KT 3050 8628

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

80-GONZALEZ

Local storm report, Jul 20, 12:21 PM EDT, 2 hours 54 minutes before

Preliminary Local Storm Report
National Weather Service Tallahassee FL
1221 PM EDT Sat Jul 20 2024

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

0309 PM     Tstm Wnd Dmg     I-75 at Exit 5          30.68N 83.22W
07/18/2024                   Lowndes            GA   Public

            A traffic signal was blown down at the
            intersection of Lakes Blvd and Mill Store
            Road.

&&

Special weather statement, Jul 20, 1:21 PM EDT, 1 hour 54 minutes before

Special Weather Statement
National Weather Service Tallahassee FL
121 PM EDT Sat Jul 20 2024

FLZ019-201745-
Madison FL-
121 PM EDT Sat Jul 20 2024

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN MADISON COUNTY
THROUGH 145 PM EDT...

At 120 PM EDT, Doppler radar was tracking a strong thunderstorm over
Madison, moving northeast at 15 mph.

HAZARD...Wind gusts up to 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Madison, Lee, Cherry Lake, Hanson, and Pinetta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3049 8324 3036 8337 3045 8355 3064 8346
      3063 8329 3062 8327 3059 8326 3055 8326
      3052 8324
TIME...MOT...LOC 1720Z 211DEG 13KT 3047 8342

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

42-DVD

Special weather statement, Jul 20, 2:16 PM EDT, 59 minutes before

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Special weather statement, Jul 20, 2:20 PM EDT, 55 minutes before

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Special weather statement, Jul 20, 2:38 PM EDT, 37 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
Jul 19, 10:01 PM EDT	Special Weather Statement	TAE	Gadsden, Leon	44 min
Jul 20, 8:18 AM EDT	Special Marine Warning	TAE		57 min
Jul 20, 11:02 AM EDT	Special Weather Statement	TAE	Walton	43 min
Jul 20, 11:30 AM EDT	Areal Flood Advisory	TAE	Walton	2 hr
Jul 20, 12:08 PM EDT	Special Marine Warning	TAE		97 min
Jul 20, 12:57 PM EDT	Areal Flood Advisory	TAE	Bay	20 min
Jul 20, 1:17 PM EDT	Flash Flood Warning	TAE	Bay	85 min
Jul 20, 1:21 PM EDT	Special Weather Statement	TAE	Madison	24 min
Jul 20, 2:20 PM EDT	Special Weather Statement	TAE	Gadsden	40 min
Jul 20, 2:38 PM EDT	Special Weather Statement	TAE	Leon, Wakulla	52 min
Jul 20, 2:46 PM EDT	Areal Flood Advisory	TAE	Gadsden, Leon	119 min
Jul 20, 3:03 PM EDT	Severe Thunderstorm Warning	TAE	Gadsden, Jefferson, Leon	57 min
Jul 20, 3:42 PM EDT	Special Weather Statement	TAE	Leon	33 min
Jul 20, 2:16 PM EDT	Special Weather Statement	TAE	Randolph	44 min
Jul 20, 3:25 PM EDT	Special Weather Statement	TAE	Colquitt	35 min
Jul 20, 3:57 PM EDT	Special Weather Statement	TAE	Brooks, Thomas	33 min
Jul 20, 3:58 PM EDT	Special Weather Statement	TAE	Colquitt, Tift	32 min
Jul 20, 4:00 PM EDT	Special Weather Statement	TAE	Cook	30 min
Jul 20, 4:05 PM EDT	Severe Thunderstorm Warning	TAE	Brooks, Thomas	20 min
Jul 20, 4:13 PM EDT	Special Weather Statement	TAE	Ben Hill, Berrien, Irwin, Tift, Turner, Worth	62 min
Jul 20, 4:29 PM EDT	Areal Flood Advisory	TAE	Dougherty, Turner, Worth	20 min
Jul 20, 4:49 PM EDT	Flash Flood Warning	TAE	Dougherty, Turner, Worth	116 min
Jul 20, 4:58 PM EDT	Flash Flood Warning	TAE	Ben Hill, Irwin	2 hr

Nearby

Flash Flood Warnings in Florida, 2024 Every flash flood warning in 2024

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.