Alert archive / Arkansas / Flash Flood Warnings in 2021

Flash Flood Warning 3, NWS Tulsa, OK

April 28, 20214 counties in Arkansas; Adair County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Apr 28, 2021, 8:29 AM CDT for 4 counties in Arkansas; Adair County, Oklahoma. It was in force for 4 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: Apr 28, 2021, 8:29 AM CDT (13:29 UTC)
Expired: Apr 28, 2021, 12:30 PM CDT
In force: 4 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

Counties Benton County, AR, Carroll County, AR, Madison County, AR, Washington County, AR, Adair County, OK

The radar

The Western Arkansas radar (KSRX), 109 km from the middle of the area, began a volume at 13:33 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 12:00Z, 1.5 hours before the alert went out and 78 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: 34 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 1441 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

626 
WGUS54 KTSA 281329
FFWTSA
ARC007-015-087-143-OKC001-281730-
/O.NEW.KTSA.FF.W.0003.210428T1329Z-210428T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tulsa OK
829 AM CDT Wed Apr 28 2021

The National Weather Service in Tulsa has issued a

* Flash Flood Warning for...
  Northeastern Benton County in northwestern Arkansas...
  Northwestern Carroll County in northwestern Arkansas...
  Northwestern Madison County in northwestern Arkansas...
  Washington AR County in northwestern Arkansas...
  East Central Adair County in northeastern Oklahoma...

* Until 1230 PM CDT.

* At 829 AM CDT, Doppler radar and automated rain gauges indicated 
  thunderstorms producing heavy rain ongoing across far northeast 
  Oklahoma and far northwest Arkansas. These storms will move into 
  the the warned area and flash flooding is expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  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...
  Fayetteville...                    Springdale...
  Berryville...                      Stilwell...
  Eureka Springs...                  Farmington...
  Prairie Grove...                   Elkins...
  West Fork...                       Lincoln...
  Greenland...                       Winslow...
  Beaver...                          Hindsville...
  Wesley...                          Hobbs State Park...
  War Eagle...                       Drake Field Airport...
  Clifty...                          Brentwood...

Rainfall amounts of 1 to 3 inches are possible in the warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3639 9387 3650 9387 3650 9340 3575 9413
      3576 9467

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 28, 6:26 AM CDT	Tornado Warning	TSA	Washington	18 min
Apr 28, 6:47 AM CDT	Special Weather Statement	TSA	Washington	43 min
Apr 28, 7:04 AM CDT	Special Weather Statement	TSA	Benton	26 min
Apr 28, 7:20 AM CDT	Areal Flood Advisory	TSA	Benton, Washington	4 hr
Apr 28, 7:34 AM CDT	Special Weather Statement	TSA	Benton	26 min
Apr 28, 7:47 AM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll	43 min
Apr 28, 7:52 AM CDT	Flash Flood Warning	TSA	Benton, Washington	5 hr
Apr 28, 7:58 AM CDT	Special Weather Statement	TSA	Benton	32 min
Apr 28, 8:03 AM CDT	Tornado Warning Tornado observed	TSA	Benton	27 min
Apr 28, 8:13 AM CDT	Tornado Warning	TSA	Carroll	22 min
Apr 28, 8:16 AM CDT	Severe Thunderstorm Warning	TSA	Benton, Washington	44 min
Apr 28, 8:27 AM CDT	Special Weather Statement	TSA	Crawford, Washington	48 min
Apr 28, 8:40 AM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison, Washington	50 min
Apr 28, 9:04 AM CDT	Severe Thunderstorm Warning	TSA	Carroll	26 min
Apr 28, 9:15 AM CDT	Special Weather Statement	TSA	Crawford, Franklin, Madison	45 min
Apr 28, 9:26 AM CDT	Special Weather Statement	TSA	Carroll	19 min
Apr 28, 9:42 AM CDT	Areal Flood Advisory	TSA	Carroll, Madison, Washington	3 hr
Apr 28, 9:56 AM CDT	Special Weather Statement	TSA	Carroll, Franklin, Madison	34 min
Apr 28, 9:58 AM CDT	River Flood Warning	TSA	Crawford	41 hr
Apr 28, 9:58 AM CDT	River Flood Warning	TSA	Crawford, Sebastian	41 hr
Apr 28, 9:58 AM CDT	River Flood Warning	TSA	Franklin, Johnson, Logan	70 hr
Apr 28, 10:34 AM CDT	Special Weather Statement	TSA	Franklin	41 min
Apr 28, 11:34 AM CDT	Areal Flood Advisory	TSA	Crawford, Franklin	3 hr
Apr 28, 11:52 AM CDT	Flash Flood Warning	TSA	Benton, Carroll, Crawford, Franklin, Madison, Washington	8 hr
Apr 28, 4:42 PM CDT	River Flood Advisory	TSA	Crawford, Franklin	19 hr
Apr 28, 1:54 AM CDT	Special Weather Statement	TSA	Craig, Osage, Rogers, Washington	21 min
Apr 28, 2:16 AM CDT	Special Weather Statement	TSA	Craig	29 min
Apr 28, 2:20 AM CDT	Tornado Warning	TSA	Okfuskee, Okmulgee	40 min
Apr 28, 2:57 AM CDT	Tornado Warning	TSA	Muskogee, Okmulgee	15 min
Apr 28, 5:12 AM CDT	Special Weather Statement	TSA	Adair	33 min
Apr 28, 5:19 AM CDT	Special Weather Statement	TSA	Okmulgee	26 min
Apr 28, 5:22 AM CDT	Special Weather Statement	TSA	Sequoyah	23 min
Apr 28, 5:44 AM CDT	Special Weather Statement	TSA	Okmulgee	16 min
Apr 28, 5:48 AM CDT	Special Weather Statement	TSA	Adair	27 min
Apr 28, 5:52 AM CDT	Tornado Warning	TSA	Adair	38 min
Apr 28, 5:54 AM CDT	Special Weather Statement	TSA	McIntosh	36 min
Apr 28, 6:03 AM CDT	Special Weather Statement	TSA	Sequoyah	27 min
Apr 28, 6:23 AM CDT	Special Weather Statement	TSA	McIntosh	37 min
Apr 28, 6:45 AM CDT	Areal Flood Advisory	TSA	Adair, Cherokee, Muskogee, Sequoyah	5 hr
Apr 28, 6:53 AM CDT	Special Weather Statement	TSA	Muskogee	52 min
Apr 28, 7:43 AM CDT	Special Weather Statement	TSA	Adair, Sequoyah	47 min
Apr 28, 9:15 AM CDT	River Flood Warning	TSA	Adair, Cherokee, Delaware	47 hr
Apr 28, 9:15 AM CDT	River Flood Warning	TSA	Cherokee	64 hr
Apr 28, 9:15 AM CDT	River Flood Warning	TSA	Cherokee	11 hr
Apr 28, 9:15 AM CDT	River Flood Warning	TSA	Adair, Delaware	41 hr
Apr 28, 9:18 AM CDT	River Flood Advisory	TSA	Cherokee, Delaware	23 hr
Apr 28, 9:22 AM CDT	River Flood Warning	TSA	Creek	7 hr
Apr 28, 9:35 AM CDT	Special Weather Statement	TSA	Pittsburg	40 min
Apr 28, 10:01 AM CDT	River Flood Warning	TSA	Okmulgee	16 hr
Apr 28, 10:14 AM CDT	Special Weather Statement	TSA	McIntosh, Pittsburg	46 min
Apr 28, 10:38 AM CDT	Areal Flood Advisory	TSA	McIntosh, Pittsburg	3 hr
Apr 28, 10:40 AM CDT	Tornado Warning	TSA	McIntosh, Pittsburg	35 min
Apr 28, 10:49 AM CDT	Flash Flood Warning	TSA	Haskell, McIntosh, Muskogee, Pittsburg, Sequoyah	4 hr
Apr 28, 11:09 AM CDT	Tornado Warning	TSA	Haskell, McIntosh, Pittsburg	31 min
Apr 28, 11:42 AM CDT	Special Weather Statement	TSA	Haskell	33 min
Apr 28, 12:32 PM CDT	Areal Flood Warning	TSA	Adair, Cherokee, Delaware, Haskell, Latimer, McIntosh and 3 more	9 hr
Apr 28, 4:36 PM CDT	River Flood Warning	TSA	LeFlore	3 days

Nearby

Flash Flood Warnings in Arkansas, 2021 Flash Flood Warnings in Oklahoma, 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.