Alert archive / Florida / Flash Flood Warnings in 2016

Flash Flood Warning 19, NWS Tallahassee, FL

August 10, 2016Leon County, Florida

NWS Tallahassee, FL issued this flash flood warning at Aug 10, 2016, 11:30 AM EDT for Leon County, Florida. 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
Aug 10, 2016, 11:30 AM EDT (15:30 UTC)
Expired
Aug 10, 2016, 2:30 PM EDT
In force
3 hr
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Flood severity
None

County Leon County, FL

The radar

The Tallahassee radar (KTLH), 10 km from the middle of the area, began a volume at 15:29 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 10, 11:35 AM EDTFLASH FLOOD4 Ene Tallahassee Coml, FLWEEMS ROAD CLOSED DUE TO WATER OVER THE ROAD.

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, 3.5 hours before the alert went out and 245 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 2016-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 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, Jacksonville, FL at 12:00Z on 2016-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -40 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
10 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
1044 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-40 m²/s²
0-3 km storm-relative helicity
-43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

343 
WGUS52 KTAE 101530
FFWTAE
FLC073-101830-
/O.NEW.KTAE.FF.W.0019.160810T1530Z-160810T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1130 AM EDT WED AUG 10 2016

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL LEON COUNTY IN FLORIDA...

* UNTIL 230 PM EDT

* AT 1129 AM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO
  BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  TALLAHASSEE...FLORIDA A AND M...DOAK CAMPBELL STADIUM...
  FLORIDA STATE UNIVERSITY...TALLAHASSEE COMM COLLEGE...
  INNOVATION PARK...FOREST MEADOWS PARK...FALLSCHASE...
  STATE CAPITAL COMPLEX...EIGHT MILE POND...BELAIR...
  TALLAHASSEE MALL...LAKE JACKSON...MACON COMMUNITY PARK...
  LEON COUNTY CIVIC CENTER...MISSION SAN LUIS...WINTHROP PARK...
  LAKE BRADFORD...MACLAY STATE GARDENS AND LUTTERLOH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3056 8417 3032 8420 3033 8439 3056 8437

$$

38-GODSEY
2 follow-up statements
458 
WGUS72 KTAE 101619
FFSTAE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1219 PM EDT WED AUG 10 2016

FLC073-101830-
/O.CON.KTAE.FF.W.0019.000000T0000Z-160810T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LEON FL-
1219 PM EDT WED AUG 10 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 PM EDT FOR
CENTRAL LEON COUNTY...

AT 1216 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA WITH ANOTHER ROUND OF HEAVY
RAINFALL APPROACHING TALLAHASSEE. UP TO TWO INCHES OF RAIN HAS
ALREADY FALLEN AND AN ADDITIONAL TWO TO THREE INCHES IS EXPECTED
THROUGH 115 PM EDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

&&

LAT...LON 3056 8417 3032 8420 3033 8439 3056 8437

$$

38-GODSEY
129 
WGUS72 KTAE 101712
FFSTAE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
112 PM EDT WED AUG 10 2016

FLC073-101722-
/O.CAN.KTAE.FF.W.0019.000000T0000Z-160810T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LEON FL-
112 PM EDT WED AUG 10 2016

...THE FLASH FLOOD WARNING FOR CENTRAL LEON COUNTY IS CANCELLED...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

&&

LAT...LON 3056 8417 3032 8420 3033 8439 3056 8437

$$

38-GODSEY

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 8:10 PM EDTSmall Craft AdvisoryTAE24 hr
Aug 9, 8:51 PM EDTAreal Flood WarningTAEBay3 hr
Aug 10, 12:06 AM EDTAreal Flood WarningTAEBay3 hr
Aug 10, 3:31 AM EDTRip Current StatementTAEBay, Franklin, Gulf, Walton20 hr

Nearby

Flash Flood Warnings in Florida, 2016Every flash flood warning in 2016

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.