Alert archive / Florida / Flash Flood Warnings in 2021

Flash Flood Warning 3, NWS Jacksonville, FL

June 13, 2021Duval County, Florida

NWS Jacksonville, FL issued this flash flood warning at Jun 13, 2021, 5:01 PM EDT for Duval County, Florida. It was in force for 79 min. 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
Jun 13, 2021, 5:01 PM EDT (21:01 UTC)
Expired
Jun 13, 2021, 6:20 PM EDT
In force
79 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Flood severity
None

County Duval County, FL

The radar

The Jacksonville radar (KJAX), 17 km from the middle of the area, began a volume at 21:04 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
Jun 13, 5:15 PM EDTFLASH FLOODJacksonville, FLBROADCAST MEDIA SHOWED A VIDEO ON SOCIAL MEDIA OF UP TO 6 INCHES OF WATER FLOODING THE INTERSECTION OF BAY STREET AND MAIN STREET IN DOWNTOWN JACKSONVILLE.
Jun 13, 5:25 PM EDTFLASH FLOOD1 Wsw Riverside, FLBROADCAST MEDIA RELAYED A SOCIAL MEDIA VIDEO OF STREET FLOODING UP TO 6 TO 12 INCHES ALONG PARK STREET NEAR AVONDALE AVENUE IN JACKSONVILLE.
Jun 13, 5:51 PM EDTFLASH FLOODJacksonville, FLBROADCAST MEDIA SHARED A VIDEO ON SOCIAL MEDIA OF HOGANS CREEK OVERFLOWING ITS BANKS NEAR BETHEL BAPTIST ST AND LAURA ST.
Jun 13, 5:53 PM EDTFLOOD2 Wnw Riverside, FLPUBLIC SHARED A PHOTO ON SOCIAL MEDIA OF MINOR PONDING OF WATER IN THEIR YARD ALONG GILMORE STREET.
Jun 13, 5:54 PM EDTFLASH FLOODSan Marco, FLPUBLIC SHARED A PHOTO ON SOCIAL MEDIA OF STREET FLOODING IN SAN MARCO NEAR LANDON & FLAGLER AVENUES.
Jun 13, 5:56 PM EDTFLASH FLOOD2 Nnw Ortega, FLPUBLIC SHARED A PHOTO THROUGH SOCIAL MEDIA OF THEIR BACKYARD FLOODING NEAR LITTLE FISHWEIR CREEK BY THE INTERSECTION OF AZELEA DRIVE AND HOLLINGSWORTH STREET.

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

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 9.0 hours before the alert went out and 19 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, Jacksonville, FL at 12:00Z on 2021-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1032 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 12:00Z on 2021-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
1032 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
642 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

864 
WGUS52 KJAX 132101
FFWJAX
FLC031-132300-
/O.NEW.KJAX.FF.W.0003.210613T2101Z-210613T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jacksonville FL
501 PM EDT Sun Jun 13 2021

The National Weather Service in Jacksonville has issued a

* Flash Flood Warning for...
  Central Duval County in northeastern Florida...

* Until 700 PM EDT.

* At 501 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to 1 inch of rain has 
  fallen. Additional rainfall amounts of 1 to 3 inches are possible 
  in the warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Jacksonville, Normandy, Ortega, Riverside, Cisco Gardens, San 
  Marco, Whitehouse Air Field and Tallyrand.

This includes the following streams and drainages...
  Mc Coys Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3039 8177 3036 8162 3024 8165 3027 8184
      3037 8191

FLASH FLOOD...RADAR INDICATED

$$

HESS
1 follow-up statement
748 
WGUS72 KJAX 132220
FFSJAX

Flash Flood Statement
National Weather Service Jacksonville FL
620 PM EDT Sun Jun 13 2021

FLC031-132230-
/O.CAN.KJAX.FF.W.0003.000000T0000Z-210613T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Duval FL-
620 PM EDT Sun Jun 13 2021

...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL DUVAL COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3039 8177 3036 8162 3024 8165 3027 8184
      3037 8191

$$

HESS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 8:44 PM EDTSpecial Marine WarningJAX61 min
Jun 13, 2:06 PM EDTSpecial Weather StatementJAXAlachua39 min
Jun 13, 2:08 PM EDTSpecial Weather StatementJAXPutnam52 min
Jun 13, 2:11 PM EDTSpecial Marine WarningJAX64 min
Jun 13, 2:18 PM EDTSpecial Weather StatementJAXMarion27 min
Jun 13, 2:21 PM EDTSpecial Weather StatementJAXGilchrist39 min
Jun 13, 2:40 PM EDTSpecial Weather StatementJAXMarion50 min
Jun 13, 2:56 PM EDTSpecial Weather StatementJAXFlagler49 min
Jun 13, 3:02 PM EDTSpecial Weather StatementJAXAlachua, Putnam43 min
Jun 13, 3:04 PM EDTSpecial Weather StatementJAXSaint Johns41 min
Jun 13, 3:10 PM EDTSevere Thunderstorm WarningJAXFlagler35 min
Jun 13, 3:14 PM EDTSpecial Weather StatementJAXClay31 min
Jun 13, 3:19 PM EDTSpecial Marine WarningJAX41 min
Jun 13, 3:26 PM EDTSpecial Weather StatementJAXPutnam49 min
Jun 13, 3:35 PM EDTSevere Thunderstorm WarningJAXMarion, Putnam18 min
Jun 13, 3:40 PM EDTSpecial Marine WarningJAX65 min
Jun 13, 3:42 PM EDTSpecial Weather StatementJAXBradford, Clay48 min
Jun 13, 3:43 PM EDTTornado WarningJAXFlagler11 min
Jun 13, 3:46 PM EDTSpecial Weather StatementJAXSaint Johns29 min
Jun 13, 3:50 PM EDTSpecial Weather StatementJAXMarion40 min
Jun 13, 4:01 PM EDTSpecial Weather StatementJAXFlagler29 min
Jun 13, 4:21 PM EDTSpecial Weather StatementJAXClay54 min
Jun 13, 4:31 PM EDTSpecial Weather StatementJAXFlagler29 min
Jun 13, 4:50 PM EDTSpecial Weather StatementJAXDuval40 min
Jun 13, 4:56 PM EDTSevere Thunderstorm WarningJAXDuval14 min
Jun 13, 5:50 PM EDTSpecial Weather StatementJAXBaker, Columbia40 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.