Alert archive / Arkansas / Flash Flood Warnings in 2021

Flash Flood Warning 45, NWS Little Rock, AR

May 26, 2021Calhoun County, Ouachita County, Arkansas

NWS Little Rock, AR issued this flash flood warning at May 26, 2021, 3:56 AM CDT for Calhoun County, Ouachita County, Arkansas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 26, 2021, 3:56 AM CDT (08:56 UTC)
Expired
May 26, 2021, 6:55 AM CDT
In force
3 hr
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Flood severity
None

Counties Calhoun County, AR, Ouachita County, AR

The radar

The Little Rock radar (KLZK), 149 km from the middle of the area, began a volume at 08:59 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

Shreveport, LA (KSHV), launched 00:00Z, 8.9 hours before the alert went out and 151 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, Shreveport, LA at 00:00Z on 2021-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 11 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, Shreveport, LA at 00:00Z on 2021-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 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
11 J/kg
Mixed-layer CIN
-327 J/kg
Mixed-layer LCL
1125 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

924 
WGUS54 KLZK 260856
FFWLZK
ARC013-103-261200-
/O.NEW.KLZK.FF.W.0045.210526T0856Z-210526T1155Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Little Rock AR
356 AM CDT Wed May 26 2021

The National Weather Service in Little Rock has issued a

* Flash Flood Warning for...
  Central Calhoun County in southwestern Arkansas...
  Ouachita County in southwestern Arkansas...

* Until 655 AM CDT.

* At 355 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  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...
  Camden, Bearden, Stephens, Thornton, Chidester, Louann, 
  Cullendale, Highland Industrial Park, Poison Springs State Park, 
  Harlow, White Oak Lake State Park, East Camden, Amy, Artesian, 
  Warner, Fairview in Ouachita County, Harmony Grove, Frenchport, 
  Locust Bayou and Elliot.

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, country roads, farmland, and other low lying 
spots.

&&

LAT...LON 3381 9290 3379 9250 3365 9252 3327 9244
      3329 9247 3332 9246 3332 9252 3336 9253
      3336 9259 3336 9266 3339 9276 3336 9280
      3338 9312 3378 9310 3379 9307 3377 9304
      3378 9299 3379 9294 3382 9293

FLASH FLOOD...RADAR INDICATED

$$

67
2 follow-up statements
100 
WGUS74 KLZK 261003
FFSLZK

Flash Flood Statement
National Weather Service Little Rock AR
503 AM CDT Wed May 26 2021

ARC013-103-261200-
/O.CON.KLZK.FF.W.0045.000000T0000Z-210526T1155Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Calhoun AR-Ouachita AR-
503 AM CDT Wed May 26 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 655 AM CDT THIS 
MORNING FOR CENTRAL CALHOUN AND OUACHITA COUNTIES...

At 502 AM CDT, Doppler radar indicated heavy rain continuing across 
the warned area. Between 1 and 3 inches of rain have fallen. Flash 
flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

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...
  Camden, Bearden, Stephens, Thornton, Chidester, Louann, 
  Cullendale, Highland Industrial Park, Poison Springs State Park, 
  Harlow, White Oak Lake State Park, East Camden, Amy, Artesian, 
  Warner, Fairview in Ouachita County, Harmony Grove, Frenchport, 
  Locust Bayou and Elliot.

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, country roads, farmland, and other low lying 
spots.

&&

LAT...LON 3381 9290 3379 9250 3365 9252 3327 9244
      3329 9247 3332 9246 3332 9252 3336 9253
      3336 9259 3336 9266 3339 9276 3336 9280
      3338 9312 3378 9310 3379 9307 3377 9304
      3378 9299 3379 9294 3382 9293

FLASH FLOOD...RADAR INDICATED

$$

67
085 
WGUS74 KLZK 261156
FFSLZK

Flash Flood Statement
National Weather Service Little Rock AR
656 AM CDT Wed May 26 2021

ARC013-103-261206-
/O.EXP.KLZK.FF.W.0045.000000T0000Z-210526T1155Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Calhoun AR-Ouachita AR-
656 AM CDT Wed May 26 2021

...FLASH FLOOD WARNING HAS EXPIRED FOR CENTRAL CALHOUN AND OUACHITA 
COUNTIES...

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

LAT...LON 3381 9290 3379 9250 3365 9252 3327 9244
      3329 9247 3332 9246 3332 9252 3336 9253
      3336 9259 3336 9266 3339 9276 3336 9280
      3338 9312 3378 9310 3379 9307 3377 9304
      3378 9299 3379 9294 3382 9293

$$

44

The office that day

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

IssuedProductOfficeCountiesLasted
May 25, 7:03 PM CDTFlash Flood WarningLZKYell5 hr
May 25, 7:28 PM CDTFlash Flood WarningLZKPolk, Scott2 hr
May 25, 7:47 PM CDTRiver Flood AdvisoryLZKPrairie4 min
May 25, 8:19 PM CDTFlash Flood WarningLZKPolk, Scott2 hr
May 25, 9:16 PM CDTFlash Flood WarningLZKPolk, Scott80 min
May 25, 9:41 PM CDTAreal Flood WarningLZKPolk, Scott3 hr
May 25, 10:32 PM CDTAreal Flood WarningLZKLogan, Polk, Scott3 hr
May 25, 10:50 PM CDTFlash Flood WarningLZKLogan, Pope, Yell116 min
May 25, 11:59 PM CDTAreal Flood WarningLZKYell6 hr
May 26, 12:44 AM CDTAreal Flood WarningLZKCleburne, Pope, Searcy, Van Buren6 hr
May 26, 12:48 AM CDTRiver Flood WarningLZKYell4 days
May 26, 9:30 AM CDTRiver Flood AdvisoryLZKPrairie22 hr
May 26, 9:38 AM CDTRiver Flood AdvisoryLZKYell10 hr

Nearby

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