Alert archive / Arkansas / Flash Flood Warnings in 2021

Flash Flood Warning 111, NWS Little Rock, AR

July 18, 2021Cleburne County, Van Buren County, Arkansas

NWS Little Rock, AR issued this flash flood warning at Jul 18, 2021, 2:17 AM CDT for Cleburne County, Van Buren County, Arkansas. It was in force for 89 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 18, 2021, 2:17 AM CDT (07:17 UTC)
Expired: Jul 18, 2021, 3:46 AM CDT
In force: 89 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Flood severity: None

Counties Cleburne County, AR, Van Buren County, AR

The radar

The Little Rock radar (KLZK), 80 km from the middle of the area, began a volume at 07:18 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 nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 7.3 hours before the alert went out and 199 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 346 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 826 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: -60 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

115 
WGUS54 KLZK 180717
FFWLZK
ARC023-141-181015-
/O.NEW.KLZK.FF.W.0111.210718T0717Z-210718T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Little Rock AR
217 AM CDT Sun Jul 18 2021

The National Weather Service in Little Rock has issued a

* Flash Flood Warning for...
  Western Cleburne County in north central Arkansas...
  Eastern Van Buren County in north central Arkansas...

* Until 515 AM CDT.

* At 217 AM CDT, Doppler radar indicated showers and thunderstorms 
  producing heavy rain across the warned area. Radar was estimating 
  between two and three inches of rain have fallen in the last 
  couple of hours. Flash flooding is likely 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...
  Clinton, Fairfield Bay, Greers Ferry, Quitman, Shirley, Higden, 
  Fairfield Bay Marina, Sugar Loaf Recreation Area, Fairbanks, 
  Choctaw, Bee Branch, South Fork Recreation Area, Choctow 
  Recreation Area, Morganton, Narrows Marina, Edgemont, Hill Creek 
  Recreation Area, Brewer, Eden Isle and Pearson.

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 3565 9253 3571 9246 3566 9206 3541 9212
      3538 9213 3540 9230 3555 9259

FLASH FLOOD...RADAR INDICATED

$$

57

2 follow-up statements

604 
WGUS74 KLZK 180808
FFSLZK

Flash Flood Statement
National Weather Service Little Rock AR
308 AM CDT Sun Jul 18 2021

ARC023-141-181015-
/O.CON.KLZK.FF.W.0111.000000T0000Z-210718T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cleburne AR-Van Buren AR-
308 AM CDT Sun Jul 18 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 AM CDT EARLY THIS 
MORNING FOR WESTERN CLEBURNE AND EASTERN VAN BUREN COUNTIES...

At 308 AM CDT, Rainfall has diminished in the warned area. However, 
any runoff issues will likely continue for some time, especially in 
the higher terrain. Thus, the warning will be allowed to continue 
for the time being.

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...
  Clinton, Fairfield Bay, Greers Ferry, Quitman, Shirley, Higden, 
  Fairfield Bay Marina, Sugar Loaf Recreation Area, Fairbanks, 
  Choctaw, Bee Branch, South Fork Recreation Area, Choctow 
  Recreation Area, Morganton, Narrows Marina, Edgemont, Hill Creek 
  Recreation Area, Brewer, Eden Isle and Pearson.

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 3565 9253 3571 9246 3566 9206 3541 9212
      3538 9213 3540 9230 3555 9259

FLASH FLOOD...RADAR INDICATED

$$

57

492 
WGUS74 KLZK 180846
FFSLZK

Flash Flood Statement
National Weather Service Little Rock AR
346 AM CDT Sun Jul 18 2021

ARC023-141-180856-
/O.CAN.KLZK.FF.W.0111.000000T0000Z-210718T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cleburne AR-Van Buren AR-
346 AM CDT Sun Jul 18 2021

...FLASH FLOOD WARNING IS CANCELLED FOR WESTERN CLEBURNE AND EASTERN 
VAN BUREN COUNTIES...

The heavy rain has ended. Flash flooding is no longer expected to 
pose a threat. However, please continue to be cautious, as localized 
runoff problems could continue.

LAT...LON 3565 9253 3571 9246 3566 9206 3541 9212
      3538 9213 3540 9230 3555 9259

$$

57

The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 17, 9:27 PM CDT	Special Weather Statement	LZK	Lincoln	33 min
Jul 18, 2:32 AM CDT	Special Weather Statement	LZK	White	58 min
Jul 18, 4:57 AM CDT	Flash Flood Watch	LZK	Arkansas, Clark, Cleburne, Cleveland, Conway, Dallas and 18 more	10 hr
Jul 18, 10:59 AM CDT	Special Weather Statement	LZK	Cleveland	46 min
Jul 18, 11:34 AM CDT	Special Weather Statement	LZK	Calhoun	41 min
Jul 18, 11:50 AM CDT	Special Weather Statement	LZK	Drew, Lincoln	40 min
Jul 18, 12:37 PM CDT	Special Weather Statement	LZK	Desha, Drew	38 min

Nearby

Flash Flood Warnings in Arkansas, 2021 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.