Alert archive / Alabama / Flash Flood Warnings in 2020

Flash Flood Warning 2, NWS Tallahassee, FL

April 23, 2020Holmes County, Jackson County, Florida; Dale County, Geneva County, Houston County, Alabama; Early County, Seminole County, Georgia

NWS Tallahassee, FL issued this flash flood warning at Apr 23, 2020, 3:46 PM CDT for Holmes County, Jackson County, Florida; Dale County, Geneva County, Houston County, Alabama; Early County, Seminole County, Georgia. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 23, 2020, 3:46 PM CDT (20:46 UTC)
Expired
Apr 23, 2020, 6:45 PM CDT
In force
3 hr
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Flood severity
None

Counties Dale County, AL, Geneva County, AL, Houston County, AL, Holmes County, FL, Jackson County, FL, Early County, GA, Seminole County, GA

The radar

The Ft Rucker radar (KEOX), 36 km from the middle of the area, began a volume at 20:47 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.

What was reported inside it

TimeReportWhereRemark
Apr 23, 4:50 PM CDTFLASH FLOOD1 Se Cobb Crossroads, FLWATER ON ROADWAY.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.8 hours before the alert went out and 134 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-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 12:00Z on 2020-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2020-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 455 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
1318 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
455 m²/s²
0-3 km storm-relative helicity
663 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

552 
WGUS52 KTAE 232046
FFWTAE
ALC045-061-069-FLC059-063-GAC099-253-232345-
/O.NEW.KTAE.FF.W.0002.200423T2046Z-200423T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tallahassee FL
446 PM EDT Thu Apr 23 2020

The National Weather Service in Tallahassee has issued a

* Flash Flood Warning for...
  Southeastern Dale County in southeastern Alabama...
  Eastern Geneva County in southeastern Alabama...
  Houston County in southeastern Alabama...
  Northern Jackson County in the Panhandle of Florida...
  Northeastern Holmes County in the Panhandle of Florida...
  Southwestern Early County in southwestern Georgia...
  Northwestern Seminole County in southwestern Georgia...

* Until 745 PM EDT/645 PM CDT/.

* At 445 PM EDT/345 PM CDT/, Doppler radar and automated gauges
  indicated thunderstorms producing heavy rain across the warned 
  area. Up to 6 inches of rain have already fallen. Flash flooding 
  is already occurring.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar and automated gauges.

  IMPACT...Flooding of small creeks and streams, urban areas, 
           highways, streets and underpasses as well as other 
           drainage and low lying areas.

* Some locations that will experience flooding include...
  Daleville, Cottonwood, Graceville, Dothan, Hartford, Taylor,
  Midland City, Kinsey, Ashford, Slocomb, Cowarts, Webb, Columbia,
  Pinckard, Malone, Malvern, Rehobeth, Grimes, Avon and Esto.

Additional rainfall amounts of 2 to 3 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3131 8567 3130 8492 3089 8492 3089 8583

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

25-CAMP

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 23, 6:35 AM CDTCoastal Flood AdvisoryTAEDixie, Franklin, Jefferson, Taylor, Wakulla21 hr
Apr 23, 8:22 AM CDTSevere Thunderstorm WarningTAEHolmes, Walton68 min
Apr 23, 8:48 AM CDTTornado WarningTAEHolmes, Walton27 min
Apr 23, 9:22 AM CDTSevere Thunderstorm WarningTAEHolmes, Jackson, Walton, Washington38 min
Apr 23, 9:58 AM CDTSevere Thunderstorm WarningTAEHolmes, Jackson47 min
Apr 23, 10:41 AM CDTSevere Thunderstorm WarningTAEJackson64 min
Apr 23, 11:08 AM CDTAreal Flood AdvisoryTAEHolmes, Jackson, Walton, Washington3 hr
Apr 23, 1:04 PM CDTFlash Flood WarningTAEHolmes, Walton3 hr
Apr 23, 1:13 PM CDTSevere Thunderstorm WarningTAEHolmes, Walton, Washington62 min
Apr 23, 1:52 PM CDTSevere Thunderstorm WarningTAEHolmes, Jackson, Walton, Washington23 min
Apr 23, 2:15 PM CDTSevere Thunderstorm WarningTAEJackson, Washington30 min
Apr 23, 2:24 PM CDTSpecial Marine WarningTAE2 hr
Apr 23, 2:42 PM CDTSevere Thunderstorm WarningTAECalhoun, Jackson, Liberty, Washington48 min
Apr 23, 2:50 PM CDTSevere Thunderstorm WarningTAEBay, Holmes, Walton, Washington40 min
Apr 23, 3:04 PM CDTTornado WarningTAEWalton26 min
Apr 23, 3:13 PM CDTTornado WarningTAEHolmes, Walton, Washington32 min
Apr 23, 3:19 PM CDTSevere Thunderstorm WarningTAEBay, Calhoun, Holmes, Jackson, Walton, Washington56 min
Apr 23, 3:25 PM CDTTornado WarningTAEBay, Walton, Washington20 min
Apr 23, 3:42 PM CDTTornado WarningTAEHolmes, Jackson, Washington33 min
Apr 23, 3:45 PM CDTTornado WarningTAEBay, Walton, Washington30 min
Apr 23, 3:55 PM CDTSevere Thunderstorm WarningTAEBay, Calhoun, Gulf35 min
Apr 23, 4:00 PM CDTTornado Warning Tornado observedTAEBay, Calhoun, Gulf30 min
Apr 23, 4:06 PM CDTSevere Thunderstorm WarningTAEBay, Calhoun, Gadsden, Gulf, Jackson, Liberty39 min
Apr 23, 4:11 PM CDTSpecial Marine WarningTAE94 min
Apr 23, 4:32 PM CDTRiver Flood WarningTAEWalton32 hr
Apr 23, 4:44 PM CDTSevere Thunderstorm WarningTAEBay, Calhoun, Franklin, Gadsden, Gulf, Jackson and 3 more61 min
Apr 23, 5:24 PM CDTSevere Thunderstorm WarningTAEFranklin, Jefferson, Leon, Madison, Taylor, Wakulla66 min
Apr 23, 5:25 PM CDTTornado WarningTAEJefferson, Leon35 min
Apr 23, 5:27 PM CDTTornado WarningTAEFranklin, Wakulla33 min
Apr 23, 5:39 PM CDTSpecial Marine WarningTAE96 min
Apr 23, 5:43 PM CDTTornado WarningTAEFranklin, Wakulla32 min
Apr 23, 5:54 PM CDTTornado WarningTAEJefferson, Leon, Taylor, Wakulla21 min
Apr 23, 6:09 PM CDTSevere Thunderstorm WarningTAEJefferson, Lafayette, Madison, Taylor66 min
Apr 23, 6:30 PM CDTTornado WarningTAETaylor60 min
Apr 23, 7:34 AM CDTSpecial Weather StatementTAECoffee41 min
Apr 23, 8:08 AM CDTSpecial Weather StatementTAEDale, Henry67 min
Apr 23, 9:40 AM CDTSpecial Weather StatementTAEBaker, Dougherty, Mitchell, Tift, Turner, Worth50 min
Apr 23, 10:23 AM CDTSpecial Weather StatementTAEBen Hill, Dougherty, Irwin, Tift, Turner, Worth67 min
Apr 23, 10:47 AM CDTTornado WarningTAEDecatur, Grady, Miller, Mitchell, Thomas28 min
Apr 23, 10:51 AM CDTSevere Thunderstorm WarningTAEBen Hill, Dougherty, Irwin, Tift, Turner, Worth39 min
Apr 23, 11:11 AM CDTTornado Warning Tornado observedTAEBrooks, Colquitt, Grady, Mitchell, Thomas34 min
Apr 23, 11:13 AM CDTTornado WarningTAEColquitt, Grady, Thomas16 min
Apr 23, 11:22 AM CDTSevere Thunderstorm WarningTAEBerrien, Brooks, Colquitt, Cook, Decatur, Grady and 6 more23 min
Apr 23, 11:40 AM CDTTornado Warning Tornado observedTAEBerrien, Colquitt, Cook, Lanier35 min
Apr 23, 11:48 AM CDTSevere Thunderstorm WarningTAEBerrien, Brooks, Colquitt, Cook, Irwin, Lanier and 3 more57 min
Apr 23, 12:10 PM CDTTornado Warning Tornado observedTAEBerrien, Cook, Lanier35 min
Apr 23, 12:43 PM CDTSevere Thunderstorm WarningTAEBrooks, Lanier, Lowndes32 min

Nearby

Flash Flood Warnings in Alabama, 2020Flash Flood Warnings in Florida, 2020Flash Flood Warnings in Georgia, 2020Every flash 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.