Alert archive / Florida / River Flood Warnings in 2021

River Flood Warning 47, NWS Tallahassee, FL

August 16, 2021Calhoun County, Florida

NWS Tallahassee, FL issued this river flood warning at Aug 16, 2021, 10:01 AM CDT for Calhoun County, Florida. It took effect at Aug 17, 2021, 7:20 AM CDT. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Aug 16, 2021, 10:01 AM CDT (15:01 UTC)
In effect from: Aug 17, 2021, 7:20 AM CDT
Expired: Aug 17, 2021, 9:26 AM CDT
In force: 2 hr
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Flood severity: Moderate

County Calhoun County, FL

The radar

The Eglin Afb radar (KEVX), 75 km from the middle of the area, began a volume at 15:05 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.

The river

Written for the forecast point Chipola River near Altha (CR 274) (ALTF1). The gauge peaked at 16.57 ft at Aug 18, 2021, 9:00 AM CDT.

Action stage: 18 ft
Minor stage: 22 ft
Moderate stage: 23 ft
Major stage: 30 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 02359000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The text

As transmitted.

279 
WGUS42 KTAE 161501
FLWTAE

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Tallahassee FL
1001 AM CDT Mon Aug 16 2021

...The National Weather Service in Tallahassee FL has issued a Flood 
Warning for the following rivers in Florida...

  Chipola River near Altha (CR 274) affecting Calhoun County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Additional information is available at www.weather.gov.

The next statement will be issued this evening.

&&


FLC013-170915-
/O.NEW.KTAE.FL.W.0047.210817T1403Z-000000T0000Z/
/ALTF1.2.ER.210817T1403Z.210818T1800Z.000000T0000Z.NO/
1001 AM CDT Mon Aug 16 2021

The National Weather Service in Tallahassee has issued a

* Flood Warning for
  the Chipola River near Altha (CR 274).
* From Tuesday morning until further notice.
* At 9:00 AM CDT Monday the stage was 11.6 feet.
* Flood stage is 22.0 feet.
* Moderate flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  Tuesday morning and continue rising to a crest of 28.2 feet early 
  Wednesday afternoon.
* Impact...At 28.5 feet, water will reach the highway 274 bridge and 
  approach the road.


&&

LAT...LON 3061 8514 3031 8512 3020 8514 3020 8522
      3030 8519 3061 8520

$$

4 follow-up statements

972 
WGUS82 KTAE 161908
FLSTAE

Flood Statement
National Weather Service Tallahassee FL
208 PM CDT Mon Aug 16 2021

...The Flood Warning continues for the following rivers in Florida...

  Chipola River near Altha (CR 274) affecting Calhoun County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Additional information is available at www.weather.gov.

The next statement will be issued this evening.

&&


FLC013-171315-
/O.EXT.KTAE.FL.W.0047.210818T0636Z-210820T1600Z/
/ALTF1.2.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
208 PM CDT Mon Aug 16 2021

...The Flood Warning is now in effect until late Friday morning...

The Flood Warning continues for
  the Chipola River near Altha (CR 274).
* From late Tuesday night to late Friday morning.
* At 1:00 PM CDT Monday the stage was 11.6 feet.
* Flood stage is 22.0 feet.
* Moderate flooding is forecast.
* Forecast...The river is expected to rise above flood stage early 
  Wednesday morning to a crest of 23.4 feet early Wednesday 
  afternoon. It will then fall below flood stage late Thursday 
  evening.
* Impact...At 23.0 feet, Water will start to affect houses and 
  mobile homes in the flood plain downstream from the gage. A few 
  fish camps downstream of highway 20 will be affected by flood 
  water.


&&

LAT...LON 3061 8514 3031 8512 3020 8514 3020 8522
      3030 8519 3061 8520

$$

AH

091 
WGUS82 KTAE 170119 RRA
FLSTAE

Flood Statement
National Weather Service Tallahassee FL
819 PM CDT Mon Aug 16 2021

...The Flood Warning continues for the following rivers in Florida...

  Chipola River near Altha (CR 274) affecting Calhoun County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Additional information is available at www.weather.gov.

&&


FLC013-171930-
/O.CON.KTAE.FL.W.0047.210818T0636Z-210820T1600Z/
/ALTF1.2.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
819 PM CDT Mon Aug 16 2021

...The Flood Warning remains in effect...

The Flood Warning continues for
  the Chipola River near Altha (CR 274).
* From late Tuesday night to late Friday morning.
* At 8:00 PM CDT Monday the stage was 13.7 feet.
* Flood stage is 22.0 feet.
* Moderate flooding is forecast.
* Forecast...The river is expected to rise above flood stage early 
  Wednesday morning to a crest of 23.4 feet early Wednesday 
  afternoon. It will then fall below flood stage late Thursday 
  evening.
* Impact...At 23.0 feet, Water will start to affect houses and 
  mobile homes in the flood plain downstream from the gage. A few 
  fish camps downstream of highway 20 will be affected by flood 
  water.


&&

LAT...LON 3061 8514 3031 8512 3020 8514 3020 8522
      3030 8519 3061 8520

$$

DVD

533 
WGUS82 KTAE 170316
FLSTAE

Flood Statement
National Weather Service Tallahassee FL
1016 PM CDT Mon Aug 16 2021

...The Flood Warning is extended for the following rivers in 
Florida...

  Chipola River near Altha (CR 274) affecting Calhoun County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Additional information is available at www.weather.gov.

&&


FLC013-172130-
/O.EXT.KTAE.FL.W.0047.210817T1220Z-000000T0000Z/
/ALTF1.2.ER.210817T1220Z.210818T1800Z.000000T0000Z.NO/
1016 PM CDT Mon Aug 16 2021

...The Flood Warning is now in effect until further notice...

The Flood Warning continues for
  the Chipola River near Altha (CR 274).
* From Tuesday morning until further notice.
* At 10:00 PM CDT Monday the stage was 14.3 feet.
* Flood stage is 22.0 feet.
* Moderate flooding is forecast.
* Forecast...The river is expected to rise above flood stage 
  tomorrow morning and continue rising to a crest of 29.4 feet early 
  Wednesday afternoon.
* Impact...At 30.0 feet, Major flood damage will occur.


&&

LAT...LON 3061 8514 3031 8512 3020 8514 3020 8522
      3030 8519 3061 8520

$$

DVD

133 
WGUS82 KTAE 171426
FLSTAE

Flood Statement
National Weather Service Tallahassee FL
926 AM CDT Tue Aug 17 2021

...The Flood Warning is cancelled for the following rivers in 
Florida...

  Chipola River near Altha (CR 274) affecting Calhoun County.

FLC013-171530-
/O.CAN.KTAE.FL.W.0047.000000T0000Z-210817T1426Z/
/ALTF1.2.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
926 AM CDT Tue Aug 17 2021

...The Flood Warning for the Chipola River near Altha (CR 274) has 
been cancelled...

The Flood Warning is cancelled for
  the Chipola River near Altha (CR 274).
* At 9:00 AM CDT Tuesday the stage was 15.7 feet.
* Flood stage is 22.0 feet.
* Forecast...The river is expected to rise to a crest of 19.3 feet 
  tomorrow evening.


&&

LAT...LON 3061 8514 3031 8512 3020 8514 3020 8522
      3030 8519 3061 8520

$$

BS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 16, 8:42 AM CDT	Special Marine Warning	TAE		48 min
Aug 16, 9:27 AM CDT	Special Marine Warning	TAE		63 min
Aug 16, 11:08 AM CDT	Special Marine Warning	TAE		97 min
Aug 16, 11:13 AM CDT	Areal Flood Advisory	TAE	Franklin, Liberty, Wakulla	4 hr
Aug 16, 11:24 AM CDT	Areal Flood Advisory	TAE	Franklin, Gulf	4 hr
Aug 16, 2:19 PM CDT	Flash Flood Warning	TAE	Bay, Calhoun, Gulf, Washington	6 hr
Aug 16, 2:20 PM CDT	Special Marine Warning	TAE		43 min
Aug 16, 3:44 PM CDT	Special Marine Warning	TAE		46 min
Aug 16, 3:51 PM CDT	Flash Flood Warning	TAE	Calhoun, Gulf, Jackson, Liberty, Washington	6 hr
Aug 16, 4:01 PM CDT	Special Weather Statement	TAE	Madison	44 min
Aug 16, 4:17 PM CDT	Areal Flood Advisory	TAE	Holmes, Walton, Washington	4 hr
Aug 16, 4:18 PM CDT	Special Marine Warning	TAE		87 min
Aug 16, 4:47 PM CDT	Flash Flood Warning	TAE	Holmes, Washington	5 hr
Aug 16, 5:19 PM CDT	Flash Flood Warning	TAE	Holmes, Jackson, Washington	6 hr

Nearby

River Flood Warnings in Florida, 2021 Every river 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.