Alert archive / Florida / Flash Flood Warnings in 2021

Flash Flood Warning 47, NWS Tallahassee, FL

October 7, 2021Bay County, Florida

NWS Tallahassee, FL issued this flash flood warning at Oct 7, 2021, 5:34 AM CDT for Bay County, Florida. It was in force for 3 hr. 20 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
Oct 7, 2021, 5:34 AM CDT (10:34 UTC)
Expired
Oct 7, 2021, 8:45 AM CDT
In force
3 hr
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Damage threat
Considerable
Flood severity
None

County Bay County, FL

The radar

The Eglin Afb radar (KEVX), 47 km from the middle of the area, began a volume at 10:33 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
Oct 7, 6:40 AM CDTFLASH FLOODLynn Haven, FLPUBLIC REPORT VIA SOCIAL MEDIA OF FLOODED IN STREETS AND WATER IN GARAGES ON ALABAMA AVE. NEAR MOWAT.
Oct 7, 6:45 AM CDTFLASH FLOOD1 Ene Parker, FLSOUTH TYNDALL PARKWAY FLOODED BETWEEN BOAT RACE RD. AND HICKORY ST.
Oct 7, 6:52 AM CDTFLASH FLOOD1 E Parker, FLSOCIAL MEDIA VIDEO OF FLOODING ON TYNDALL PARKWAY ALONG WITH REPORTS OF STALLED VEHICLES.
Oct 7, 7:00 AM CDTFLASH FLOOD1 E Hiland Park, FLGAME FARM ROAD AND TRANSMITTER ROAD CLOSED DUE TO FLOODING.
Oct 7, 7:00 AM CDTFLASH FLOOD1 Ene Springfield, FLTRAM ROAD IN FRONT OF VETERANS HOME CLOSED DUE TO FLOODING.
Oct 7, 7:00 AM CDTFLASH FLOOD1 Ese Lynn Haven, FLHIGHWAY 389 AND CASON ROAD CLOSED DUE TO FLOODING.
Oct 7, 7:00 AM CDTFLASH FLOOD1 Ese Springfield, FL7TH AVE AND TYNDALL PKWY CLOSED DUE TO FLOODING.
Oct 7, 7:00 AM CDTFLASH FLOOD1 Ne Callaway, FLSTAR AVE AND HIGHWAY 22 CLOSED DUE TO FLOODING.
Oct 7, 7:00 AM CDTFLASH FLOOD1 Nne Callaway, FLN FOX ROAD AND HIGHWAY 22 WAS CLOSED DUE TO FLOODING.
Oct 7, 7:00 AM CDTFLASH FLOOD1 Nne Callaway, FLROAD FLOODED AT PARKER ELEMENTARY SCHOOL.
Oct 7, 7:00 AM CDTFLASH FLOOD1 Se Springfield, FL3RD AND SENECA STREET CLOSED DUE TO FLOODING.
Oct 7, 7:00 AM CDTFLASH FLOOD1 S Lynn Haven, FLHIGHWAY 77 AND MOSLEY WAS CLOSED DUE TO FLOODING.
Oct 7, 7:00 AM CDTFLASH FLOOD2 E Lynn Haven, FLDERBY WOODS AND HIGHWAY 390 CLOSED DUE TO FLOODING.
Oct 7, 7:00 AM CDTFLASH FLOOD2 Ese Southport, FL2300 AND GCCC TRAINING CENTER WAS CLOSED DUE TO FLOODING.
Oct 7, 7:00 AM CDTFLASH FLOOD2 Se College Station, FLNEHI ROAD AT STAR AVE CLOSED DUE TO FLOODING.
Oct 7, 7:00 AM CDTFLASH FLOOD2 S Southport, FLBAILEY BRIDGE ON HIGHWAY 77 HAD FLOODING AND WAS BACKED UP TO 2300.
Oct 7, 7:00 AM CDTFLASH FLOODBay Harbor, FLBUSINESS 98 BETWEEN CHERRY STREET AND PARKER WAS CLOSED DUE TO FLOODING.
Oct 7, 7:00 AM CDTFLASH FLOODCedar Grove, FLE 12TH STREET CLOSED DUE TO FLOODING.
Oct 7, 7:37 AM CDTFLASH FLOODPanama City, FLEMERGENCY MANAGER REPORTS NUMEROUS ROAD CLOSURES AND MULTIPLE WATER RESCUES ACROSS BAY COUNTY.
Oct 7, 7:45 AM CDTFLASH FLOODSpringfield, FLREPORT VIA SOCIAL MEDIA OF 4 INCHES OF WATER IN HOME ON NORTH GRAY AVENUE.

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 00:00Z, 10.6 hours before the alert went out and 127 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 00:00Z on 2021-10-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 111 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2021-10-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 square meters per square second.19395878Sfc1 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
111 J/kg
Mixed-layer CIN
-154 J/kg
Mixed-layer LCL
837 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
117 m²/s²
0-3 km storm-relative helicity
128 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

607 
WGUS52 KTAE 071034
FFWTAE
FLC005-071345-
/O.NEW.KTAE.FF.W.0047.211007T1034Z-211007T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tallahassee FL
534 AM CDT Thu Oct 7 2021

The National Weather Service in Tallahassee has issued a

* Flash Flood Warning for...
  Southeastern Bay County in the panhandle of Florida...

* Until 845 AM CDT.

* At 534 AM CDT, Gauge reports indicated thunderstorms producing 
  heavy rain across the warned area. Downstream rainfall amounts 
  over 1.5 inches in 15 minutes are occuring. Additional rainfall 
  amounts of 2 to 4 inches are possible in the warned area. Life 
  threatening flash flooding is expected to begin shortly.

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

  SOURCE...Gauges reported.

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

* Some locations that will experience flash flooding include...
  Panama City, Lynn Haven, Callaway, Springfield, Hiland Park, 
  Tyndall Air Force Base, Parker, Brannonville, College Station, 
  Dirego Park, Cedar Grove, Bayou George, Millville, Bay Harbor, 
  Recota Beach, Bayhead, Majette, Camp Flowers and Beacon Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3023 8565 3025 8564 3027 8564 3031 8562
      3039 8562 3038 8559 3037 8557 3031 8549
      3024 8551 3019 8552 3012 8557 3007 8560
      3010 8568 3015 8573

FLASH FLOOD...GAUGE INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 6, 8:49 PM CDTRiver Flood WarningTAECalhoun, Franklin, Gulf, Liberty6 days
Oct 7, 2:34 AM CDTDense Fog AdvisoryTAEMadison5 hr
Oct 7, 3:15 AM CDTSpecial Weather StatementTAEWashington45 min
Oct 7, 3:23 AM CDTTornado WarningTAEBay20 min
Oct 7, 3:27 AM CDTFlash Flood WarningTAEBay3 hr
Oct 7, 3:49 AM CDTSpecial Marine WarningTAE26 min
Oct 7, 3:54 AM CDTSpecial Weather StatementTAEBay66 min
Oct 7, 5:05 AM CDTSpecial Weather StatementTAEBay55 min
Oct 7, 5:12 AM CDTFlash Flood WarningTAEBay, Washington3 hr
Oct 7, 5:56 AM CDTTornado WarningTAEBay34 min
Oct 7, 6:27 AM CDTFlash Flood Warning Considerable damage threatTAEBay2 hr
Oct 7, 6:44 AM CDTFlash Flood WarningTAEBay3 hr
Oct 7, 6:45 AM CDTTornado WarningTAEBay15 min
Oct 7, 7:52 AM CDTFlash Flood WarningTAEBay, Calhoun, Gulf2 hr
Oct 7, 8:18 AM CDTSpecial Marine WarningTAE42 min
Oct 7, 8:32 AM CDTAreal Flood WarningTAEBay, Washington10 hr
Oct 7, 9:04 AM CDTFlash Flood WarningTAEGulf2 hr
Oct 7, 10:29 AM CDTAreal Flood WarningTAEBay, Calhoun, Gulf9 hr
Oct 7, 11:17 AM CDTRip Current StatementTAEBay, Franklin, Gulf, Walton14 hr
Oct 7, 2:40 PM CDTSpecial Marine WarningTAE35 min

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.