Alert archive / Alabama / Flash Flood Warnings in 2021

Flash Flood Warning 21, NWS Huntsville, AL

June 19, 2021DeKalb County, Marshall County, Alabama

NWS Huntsville, AL issued this flash flood warning at Jun 19, 2021, 9:22 PM CDT for DeKalb County, Marshall County, Alabama. It was in force for 6 hr. 2 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 19, 2021, 9:22 PM CDT (02:22 UTC)
Expired
Jun 20, 2021, 3:15 AM CDT
In force
6 hr
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Flood severity
None

Counties DeKalb County, AL, Marshall County, AL

The radar

The Northeast Alabama radar (KHTX), 65 km from the middle of the area, began a volume at 02:21 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 19, 9:57 PM CDTFLASH FLOOD2 Ese Pine Ridge, AL*** 1 FATAL *** A 22 YEAR OLD FEMALE PERISHED IN A FLASH FLOOD WHEN HER VEHICLE WAS SWEPT BY FLOOD WATERS ON DYE BRANCH NEAR AIRPORT ROAD.
Jun 19, 9:57 PM CDTFLASH FLOOD2 Ese Pine Ridge, ALAIRPORT ROAD AND HIGHWAY 35 NEAR THE INTERSTATE 59 INTERCHANGE FLOODED WITH WATER RISING. WATER REPORTED TO BE TO THE STEPS OF TRACTOR TRAILERS. AIRPORT ROAD CLOSED.

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

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 2.4 hours before the alert went out and 150 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, Birmingham, AL at 00:00Z on 2021-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 380 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, Birmingham, AL at 00:00Z on 2021-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 190 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
380 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
475 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
190 m²/s²
0-3 km storm-relative helicity
231 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

179 
WGUS54 KHUN 200222
FFWHUN
ALC049-095-200815-
/O.NEW.KHUN.FF.W.0021.210620T0222Z-210620T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Huntsville AL
922 PM CDT Sat Jun 19 2021

The National Weather Service in Huntsville has issued a

* Flash Flood Warning for...
  DeKalb County in northeastern Alabama...
  Central Marshall County in northeastern Alabama...

* Until 315 AM CDT.

* At 922 PM CDT, Doppler radar indicated heavy rain across the 
  warned area. Between 3 and 5 inches of rain have fallen. Flash 
  flooding is ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by heavy rain.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Albertville, Fort Payne, Boaz, Guntersville, Arab, Rainsville, 
  Crossville, Sylvania, Fyffe, Geraldine, Valley Head, Hammondville, 
  Mentone, Pine Ridge, Lakeview, Chigger Hill, Hopewell, Skirum, 
  Whiton and Painter.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3429 8649 3436 8649 3444 8629 3447 8603
      3457 8567 3457 8552 3453 8551 3447 8558
      3447 8557 3428 8575 3426 8581 3424 8581
      3424 8584 3420 8584 3420 8611 3422 8620
      3425 8644

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR 

$$

KTW
4 follow-up statements
816 
WGUS74 KHUN 200309
FFSHUN

Flash Flood Statement
National Weather Service Huntsville AL
1009 PM CDT Sat Jun 19 2021

ALC049-095-200815-
/O.CON.KHUN.FF.W.0021.000000T0000Z-210620T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DeKalb AL-Marshall AL-
1009 PM CDT Sat Jun 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 AM CDT SUNDAY FOR 
DEKALB AND CENTRAL MARSHALL COUNTIES...

At 1009 PM CDT, emergency management reported portions of highway 35 
and Airport Road have been closed due to flooding. Between 3 and 6 
inches of rain have fallen. Flash flooding is ongoing and will 
become worse over the next few hours.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Emergency management.

IMPACT...Flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other
         drainage and low lying areas.

Some locations that will experience flash flooding include...
  Albertville, Fort Payne, Boaz, Guntersville, Arab, Rainsville, 
  Crossville, Sylvania, Fyffe, Geraldine, Valley Head, Hammondville, 
  Mentone, Pine Ridge, Lakeview, Chigger Hill, Hopewell, Skirum, 
  Whiton and Painter.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3429 8649 3436 8649 3444 8629 3447 8603
      3457 8567 3457 8552 3453 8551 3447 8558
      3447 8557 3428 8575 3426 8581 3424 8581
      3424 8584 3420 8584 3420 8611 3422 8620
      3425 8644

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

$$

KTW
140 
WGUS74 KHUN 200429
FFSHUN

Flash Flood Statement
National Weather Service Huntsville AL
1129 PM CDT Sat Jun 19 2021

ALC049-095-200815-
/O.CON.KHUN.FF.W.0021.000000T0000Z-210620T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DeKalb AL-Marshall AL-
1129 PM CDT Sat Jun 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 AM CDT SUNDAY FOR 
DEKALB AND CENTRAL MARSHALL COUNTIES...

At 1129 PM CDT, Emergency management and river gauges reported 
flooding, mainly across DeKalb County. Flooding is most serious in 
the Fort Payne area, but stream gauges in the Rainsville area 
indicate flooding possible there as well. Between 3 and 6 inches of 
rain have fallen.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Emergency management.

IMPACT...Flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other
         drainage and low lying areas.

Some locations that will experience flash flooding include...
  Albertville, Fort Payne, Boaz, Guntersville, Arab, Rainsville, 
  Crossville, Sylvania, Fyffe, Geraldine, Valley Head, Hammondville, 
  Mentone, Pine Ridge, Lakeview, Chigger Hill, Hopewell, Skirum, 
  Whiton and Painter.

Bucks Pocket State Park, DeSoto State Park, Lake Guntersville State 
Park, and Little River Canyon National Preserve are also areas that 
will be affected by flash flooding.

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 3429 8649 3436 8649 3444 8629 3447 8603
      3457 8567 3457 8552 3453 8551 3447 8558
      3447 8557 3428 8575 3426 8581 3424 8581
      3424 8584 3420 8584 3420 8611 3422 8620
      3425 8644

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

$$

BCC
067 
WGUS74 KHUN 200732
FFSHUN

Flash Flood Statement
National Weather Service Huntsville AL
232 AM CDT Sun Jun 20 2021

ALC049-095-200815-
/O.CON.KHUN.FF.W.0021.000000T0000Z-210620T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DeKalb AL-Marshall AL-
232 AM CDT Sun Jun 20 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 AM CDT EARLY THIS 
MORNING FOR DEKALB AND CENTRAL MARSHALL COUNTIES...

At 232 AM CDT, Doppler radar and automated rain gauges indicate that 
heavy rain has fallen across the warned area. Between 4 and 7 inches 
of rain have already fallen. Flash flooding is already occurring.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Doppler radar and automated gauges.

IMPACT...Flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other
         drainage and low lying areas.

Some locations that will experience flash flooding include...
  Albertville, Fort Payne, Boaz, Guntersville, Arab, Rainsville, 
  Crossville, Sylvania, Fyffe, Geraldine, Valley Head, Hammondville, 
  Mentone, Pine Ridge, Lakeview, Chigger Hill, Hopewell, Skirum, 
  Whiton and Painter.

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.

Flooding is occurring or is imminent. It is important to know where 
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid streams or 
creeks.

&&

LAT...LON 3429 8649 3436 8649 3444 8629 3447 8603
      3457 8567 3457 8552 3453 8551 3447 8558
      3447 8557 3428 8575 3426 8581 3424 8581
      3424 8584 3420 8584 3420 8611 3422 8620
      3425 8644

FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL...0.25-0.75 INCHES IN 1 HOUR 

$$

70/DD
320 
WGUS74 KHUN 200814
FFSHUN

Flash Flood Statement
National Weather Service Huntsville AL
314 AM CDT Sun Jun 20 2021

ALC049-095-200824-
/O.EXP.KHUN.FF.W.0021.000000T0000Z-210620T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DeKalb AL-Marshall AL-
314 AM CDT Sun Jun 20 2021

...FLASH FLOOD WARNING AT 315 AM CDT EARLY THIS MORNING FOR DEKALB 
AND CENTRAL MARSHALL COUNTIES HAS BEEN REPLACED WITH A FLOOD 
WARNING...

LAT...LON 3429 8649 3436 8649 3444 8629 3447 8603
      3457 8567 3457 8552 3453 8551 3447 8558
      3447 8557 3428 8575 3426 8581 3424 8581
      3424 8584 3420 8584 3420 8611 3422 8620
      3425 8644

$$

70/DD

The office that day

Everything else NWS Huntsville, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 19, 10:35 PM CDTFlash Flood Warning Considerable damage threatHUNDeKalb5 hr
Jun 20, 3:14 AM CDTAreal Flood WarningHUNDeKalb, Marshall6 hr
Jun 20, 8:59 AM CDTAreal Flood WarningHUNDeKalb, Marshall3 hr

Nearby

Flash Flood Warnings in Alabama, 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.