Alert archive / Florida / Flash Flood Warnings in 2021

Flash Flood Warning 23, NWS Tallahassee, FL

August 6, 2021Dixie County, Florida

NWS Tallahassee, FL issued this flash flood warning at Aug 6, 2021, 11:43 AM EDT for Dixie County, Florida. It was in force for 6 hr. 6 reports 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
Aug 6, 2021, 11:43 AM EDT (15:43 UTC)
Expired
Aug 6, 2021, 5:45 PM EDT
In force
6 hr
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Damage threat
Considerable
Flood severity
None

County Dixie County, FL

The radar

The Moody AFB radar (KVAX), 139 km from the middle of the area, began a volume at 15:42 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
Aug 6, 12:23 PM EDTFLASH FLOOD2 Ene Cross City Airpor, FLWAIST DEEP WATER REPORTED BEHIND SANCHEZ FARMS AFTER ANOTHER ROUND OF HEAVY RAIN IN A SHORT PERIOD OF TIME.
Aug 6, 1:10 PM EDTFLOODCross City, FLEM REPORTS TWO DOZEN HOMES FLOODED IN THE CROSS CITY AREA.
Aug 6, 4:00 PM EDTFLOOD1 Se Cross City, FLNE 162ND STREET CLOSED DUE TO FLOODING.
Aug 6, 4:00 PM EDTFLOODCross City, FLNE 207 AVE CLOSED DUE TO FLOODING.
Aug 6, 4:00 PM EDTFLOODCross City, FLNE 210 AVE CLOSED DUE TO FLOODING.
Aug 6, 4:00 PM EDTFLOODCross City, FLNE 214 AVE CLOSED DUE TO FLOODING.

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, 3.7 hours before the alert went out and 142 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 2021-08-06Temperature 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 2021-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.1939Sfc1 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
543 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

253 
WGUS52 KTAE 061543
FFWTAE
FLC029-062145-
/O.NEW.KTAE.FF.W.0023.210806T1543Z-210806T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tallahassee FL
1143 AM EDT Fri Aug 6 2021

The National Weather Service in Tallahassee has issued a

* Flash Flood Warning for...
  Northeastern Dixie County in Big Bend Florida...

* Until 545 PM EDT Friday.

* At 1143 AM EDT, Emergency management reported that flooding along 
  the airport canal is affecting numerous areas around the Cross 
  City airport with water entering structures. Additional 
  thunderstorms producing heavy rain in Cross City will likely cause 
  additional flooding beyond what's occurring now. The expected 
  rainfall rate is 1 to 2 inches per hour. Flash flooding is already 
  occurring and likely to continue.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Emergency management reported.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Cross City, Cross City Airport, Eugene and Shamrock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Move to higher ground now. Act quickly to protect your life.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 2966 8314 2968 8309 2965 8305 2961 8308
      2959 8311 2963 8316

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR

$$

WD
1 follow-up statement
582 
WGUS72 KTAE 061920
FFSTAE

Flash Flood Statement
National Weather Service Tallahassee FL
320 PM EDT Fri Aug 6 2021

FLC029-062145-
/O.CON.KTAE.FF.W.0023.000000T0000Z-210806T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Dixie FL-
320 PM EDT Fri Aug 6 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM EDT THIS 
AFTERNOON FOR NORTHEASTERN DIXIE COUNTY...

At 320 PM EDT, emergency management reported continued flash 
flooding in the Cross City area. Water levels continue to rise along 
the Airport Canal. Additional heavy rain may affect the area this 
afternoon with additional water rises possible. Flash flooding is 
already occurring.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Emergency management reported.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Cross City, Cross City Airport, Eugene and Shamrock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Move to higher ground now. Act quickly to protect your life.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 2966 8314 2968 8309 2965 8305 2961 8308
      2959 8311 2963 8316

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

42-DVD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 3:47 AM EDTRip Current StatementTAEBay, Franklin, Gulf, Walton22 hr
Aug 6, 5:08 PM EDTAreal Flood WarningTAEDixie, Lafayette6 days

Nearby

Flash Flood Warnings in Florida, 2021Every flash flood warning in 2021

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.