Alert archive / Arkansas / Flash Flood Warnings in 2022

Flash Flood Warning 2, NWS Tulsa, OK

February 21, 2022Crawford County, Sebastian County, Arkansas; LeFlore County, Sequoyah County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Feb 21, 2022, 11:37 PM CST for Crawford County, Sebastian County, Arkansas; LeFlore County, Sequoyah 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
Feb 21, 2022, 11:37 PM CST (05:37 UTC)
Expired
Feb 22, 2022, 3:30 AM CST
In force
4 hr
Issued by
NWS Tulsa, OK
Area
Storm-based polygon
Flood severity
None

Counties Crawford County, AR, Sebastian County, AR, LeFlore County, OK, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 20 km from the middle of the area, began a volume at 05:41 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, 5.6 hours before the alert went out and 166 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, Springfield, MO at 00:00Z on 2022-02-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 328 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, Springfield, MO at 00:00Z on 2022-02-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 square meters per square second.1939587897117Sfc1 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
328 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
1208 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
199 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.2

Open this sounding in Storm Lab

The text

As transmitted.

116 
WGUS54 KTSA 220537
FFWTSA
ARC033-131-OKC079-135-220930-
/O.NEW.KTSA.FF.W.0002.220222T0537Z-220222T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tulsa OK
1137 PM CST Mon Feb 21 2022

The National Weather Service in Tulsa has issued a

* Flash Flood Warning for...
  Central Crawford County in northwestern Arkansas...
  Northern Sebastian County in west central Arkansas...
  Southeastern Sequoyah County in east central Oklahoma...
  Northeastern Le Flore County in southeastern Oklahoma...

* Until 330 AM CST.

* At 1137 PM CST, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Additional rainfall amounts of 1 to 2 inches are 
  possible in the warned area. Flash flooding is 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...
  Fort Smith...                      Van Buren...
  Cedarville...                      Mountainburg...
  Alma...                            Barling...
  Pocola...                          Muldrow...
  Roland...                          Lavaca...
  Spiro...                           Arkoma...
  Mulberry...                        Panama...
  Dyer...                            Bonanza...
  Bokoshe...                         Chester...
  Moffett...                         Rudy...

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 3572 9413 3563 9407 3558 9408 3557 9405
      3545 9407 3537 9408 3506 9474 3518 9482
      3534 9475

FLASH FLOOD...RADAR INDICATED

$$
1 follow-up statement
207 
WGUS74 KTSA 220925
FFSTSA

Flash Flood Statement
National Weather Service Tulsa OK
325 AM CST Tue Feb 22 2022

ARC033-131-OKC079-135-220935-
/O.EXP.KTSA.FF.W.0002.000000T0000Z-220222T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Crawford AR-Sebastian AR-Le Flore OK-Sequoyah OK-
325 AM CST Tue Feb 22 2022

...FLASH FLOOD WARNING WILL EXPIRE AT 330 AM CST EARLY THIS MORNING 
FOR CENTRAL CRAWFORD, NORTHERN SEBASTIAN, SOUTHEASTERN SEQUOYAH AND 
NORTHEASTERN LE FLORE COUNTIES...

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

A Flood Watch remains in effect until 600 AM CST for portions of 
Arkansas and Oklahoma.

LAT...LON 3572 9413 3563 9407 3558 9408 3557 9405
      3545 9407 3537 9408 3506 9474 3518 9482
      3534 9475

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 21, 11:12 PM CSTSpecial Weather StatementTSACrawford33 min
Feb 21, 11:19 PM CSTAreal Flood AdvisoryTSACrawford, Franklin, Sebastian3 hr
Feb 21, 11:40 PM CSTSpecial Weather StatementTSAFranklin35 min
Feb 21, 11:47 PM CSTTornado WarningTSAFranklin23 min
Feb 21, 11:53 PM CSTSevere Thunderstorm WarningTSASebastian20 min
Feb 22, 1:37 AM CSTSpecial Weather StatementTSASebastian38 min
Feb 22, 2:59 PM CSTWinter Storm WarningTSABenton, Carroll, Madison, Washington48 hr
Feb 21, 9:36 PM CSTSevere Thunderstorm Warning Considerable damage threatTSALatimer, Pittsburg, Pushmataha39 min
Feb 21, 10:04 PM CSTSpecial Weather StatementTSALatimer26 min
Feb 21, 10:14 PM CSTSpecial Weather StatementTSALatimer31 min
Feb 21, 10:32 PM CSTSevere Thunderstorm WarningTSALatimer, LeFlore, Pushmataha16 min
Feb 21, 11:26 PM CSTSpecial Weather StatementTSALeFlore34 min
Feb 21, 11:32 PM CSTTornado WarningTSALeFlore23 min
Feb 22, 12:34 AM CSTSpecial Weather StatementTSAPushmataha41 min
Feb 22, 12:52 AM CSTSpecial Weather StatementTSAChoctaw38 min
Feb 22, 1:10 AM CSTSpecial Weather StatementTSALatimer, LeFlore, Pushmataha35 min
Feb 22, 3:58 AM CSTSpecial Weather StatementTSAChoctaw32 min
Feb 22, 2:59 PM CSTWinter Weather AdvisoryTSACraig, Nowata, Ottawa, Pawnee, Washington48 hr

Nearby

Flash Flood Warnings in Arkansas, 2022Flash Flood Warnings in Oklahoma, 2022Every flash flood warning in 2022

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.