Alert archive / Oklahoma / Flash Flood Warnings in 2019

Flash Flood Warning 100, NWS Tulsa, OK

August 27, 20194 counties in Oklahoma; Crawford County, Sebastian County, Arkansas

NWS Tulsa, OK issued this flash flood warning at Aug 27, 2019, 1:11 AM CDT for 4 counties in Oklahoma; Crawford County, Sebastian 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: Aug 27, 2019, 1:11 AM CDT (06:11 UTC)
Expired: Aug 27, 2019, 4:15 AM CDT
In force: 3 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

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

The radar

The Western Arkansas radar (KSRX), 10 km from the middle of the area, began a volume at 06:14 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, 6.2 hours before the alert went out and 185 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: 958 J/kg
Mixed-layer CIN: -261 J/kg
Mixed-layer LCL: 1510 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 193 m²/s²
0-3 km storm-relative helicity: 453 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

556 
WGUS54 KTSA 270611
FFWTSA
ARC033-131-OKC061-079-101-135-270915-
/O.NEW.KTSA.FF.W.0100.190827T0611Z-190827T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tulsa OK
111 AM CDT Tue Aug 27 2019

The National Weather Service in Tulsa has issued a

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

* Until 415 AM CDT.

* At 110 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy moving into the warned area. Flash flooding is expected to 
  begin shortly.

* Some locations that may experience flooding include...
  Fort Smith...                     Van Buren...
  Sallisaw...                       Stigler...
  Cedarville...                     Greenwood...
  Alma...                           Barling...
  Pocola...                         Muldrow...
  Roland...                         Lavaca...
  Spiro...                          Arkoma...
  Mulberry...                       Warner...
  Vian...                           Panama...
  Gore...                           Dyer...

Rainfall amounts of 2 to 4 are possible in the warned area.

This includes the following highways,
 Interstate 40 in Arkansas between mile markers 0 and 19.
 Interstate 40 in Oklahoma between mile markers 276 and 328.
 Interstate 540 between mile markers 1 and 14.
 Interstate 49 between mile markers 22 and 28.

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.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 3514 9412 3514 9414 3510 9414 3518 9526
      3556 9534 3544 9446 3566 9448 3559 9410

$$

2 follow-up statements

269 
WGUS74 KTSA 270723
FFSTSA

Flash Flood Statement
National Weather Service Tulsa OK
223 AM CDT Tue Aug 27 2019

ARC033-131-OKC061-079-101-135-270915-
/O.CON.KTSA.FF.W.0100.000000T0000Z-190827T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Crawford AR-Sebastian AR-Haskell OK-Sequoyah OK-Le Flore OK-
Muskogee OK-
223 AM CDT Tue Aug 27 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 AM CDT FOR
SOUTHWESTERN CRAWFORD...SEBASTIAN...NORTHEASTERN HASKELL...
SEQUOYAH...NORTHERN LE FLORE AND SOUTHEASTERN MUSKOGEE COUNTIES...

At 221 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain continue to move south across northern LeFlore and southern 
Sebastian counties. 1 to 3 inches of rain have fallen, and flash 
flooding is likely ongoing.

Some locations that may experience flooding include...
Fort Smith...                     Van Buren...
Sallisaw...                       Stigler...
Cedarville...                     Greenwood...
Alma...                           Barling...
Pocola...                         Muldrow...
Roland...                         Lavaca...
Spiro...                          Arkoma...
Mulberry...                       Warner...
Vian...                           Panama...
Gore...                           Dyer...

Additional rainfall amounts of less than an inch are possible in the 
warned area.

This includes the following highways,
 Interstate 40 in Arkansas between mile markers 0 and 19.
 Interstate 40 in Oklahoma between mile markers 276 and 328.
 Interstate 540 between mile markers 1 and 14.
 Interstate 49 between mile markers 22 and 28.

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.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 3514 9412 3514 9414 3510 9414 3518 9526
      3556 9534 3544 9446 3566 9448 3559 9410

$$

420 
WGUS74 KTSA 270905
FFSTSA

Flash Flood Statement
National Weather Service Tulsa OK
405 AM CDT Tue Aug 27 2019

ARC033-131-OKC061-079-101-135-270915-
/O.EXP.KTSA.FF.W.0100.000000T0000Z-190827T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Crawford AR-Sebastian AR-Haskell OK-Sequoyah OK-Le Flore OK-
Muskogee OK-
405 AM CDT Tue Aug 27 2019

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN CRAWFORD...SEBASTIAN...
NORTHEASTERN HASKELL...SEQUOYAH...NORTHERN LE FLORE AND SOUTHEASTERN
MUSKOGEE COUNTIES WILL EXPIRE AT 415 AM CDT...

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

LAT...LON 3514 9412 3514 9414 3510 9414 3518 9526
      3556 9534 3544 9446 3566 9448 3559 9410

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 26, 7:05 PM CDT	Special Weather Statement	TSA	Osage	40 min
Aug 26, 7:10 PM CDT	Severe Thunderstorm Warning	TSA	Osage	50 min
Aug 26, 7:22 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	38 min
Aug 26, 7:47 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	43 min
Aug 26, 8:01 PM CDT	Special Weather Statement	TSA	Osage	44 min
Aug 26, 8:08 PM CDT	Severe Thunderstorm Warning	TSA	Osage	52 min
Aug 26, 8:15 PM CDT	Severe Thunderstorm Warning	TSA	Osage	45 min
Aug 26, 8:38 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	52 min
Aug 26, 8:55 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	50 min
Aug 26, 8:57 PM CDT	Special Weather Statement	TSA	Nowata	48 min
Aug 26, 9:03 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata, Rogers	42 min
Aug 26, 9:17 PM CDT	Tornado Warning	TSA	Nowata, Rogers	17 min
Aug 26, 9:19 PM CDT	Tornado Warning	TSA	Ottawa	19 min
Aug 26, 9:37 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa	53 min
Aug 26, 9:39 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Nowata, Rogers	51 min
Aug 26, 9:48 PM CDT	Special Weather Statement	TSA	Nowata	42 min
Aug 26, 10:05 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Delaware, Mayes, Rogers, Wagoner	25 min
Aug 26, 10:16 PM CDT	Special Weather Statement	TSA	Washington	44 min
Aug 26, 10:23 PM CDT	Areal Flood Advisory	TSA	Delaware, Ottawa	2 hr
Aug 26, 10:27 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Mayes	48 min
Aug 26, 10:28 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	47 min
Aug 26, 10:52 PM CDT	Special Weather Statement	TSA	Tulsa	23 min
Aug 26, 11:00 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Sequoyah	45 min
Aug 26, 11:01 PM CDT	Areal Flood Advisory	TSA	Adair, Cherokee, Delaware, Mayes	119 min
Aug 26, 11:03 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa, Washington	42 min
Aug 26, 11:06 PM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Delaware, Mayes	3 hr
Aug 26, 11:17 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa, Wagoner	43 min
Aug 26, 11:26 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Delaware, Mayes, Wagoner	49 min
Aug 26, 11:28 PM CDT	Severe Thunderstorm Warning	TSA	Mayes, Rogers, Wagoner	47 min
Aug 26, 11:43 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Wagoner	47 min
Aug 26, 11:46 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee	44 min
Aug 26, 11:50 PM CDT	Special Weather Statement	TSA	Rogers	25 min
Aug 27, 12:07 AM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Mayes, Rogers, Wagoner	3 hr
Aug 27, 12:17 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Muskogee, Sequoyah, Wagoner	43 min
Aug 27, 12:33 AM CDT	Special Weather Statement	TSA	Cherokee	27 min
Aug 27, 12:44 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Haskell, LeFlore, Muskogee, Sequoyah	46 min
Aug 27, 12:49 AM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Muskogee, Sequoyah, Wagoner	3 hr
Aug 27, 1:23 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, Muskogee, Sequoyah	52 min
Aug 27, 1:51 AM CDT	Special Weather Statement	TSA	Latimer, LeFlore, Pushmataha	39 min
Aug 27, 2:10 AM CDT	Areal Flood Advisory	TSA	Haskell, Latimer, LeFlore	3 hr
Aug 27, 2:20 AM CDT	Special Weather Statement	TSA	Pushmataha	25 min
Aug 27, 2:55 AM CDT	Areal Flood Advisory	TSA	Latimer, LeFlore, Pushmataha	3 hr
Aug 27, 3:20 AM CDT	Special Weather Statement	TSA	Pushmataha	55 min
Aug 27, 4:20 AM CDT	Special Weather Statement	TSA	Pushmataha	40 min
Aug 26, 11:34 PM CDT	Severe Thunderstorm Warning	TSA	Carroll, Crawford, Franklin, Madison, Washington	41 min
Aug 27, 1:39 AM CDT	Flash Flood Warning	TSA	Crawford, Franklin, Sebastian	3 hr

Nearby

Flash Flood Warnings in Oklahoma, 2019 Flash Flood Warnings in Arkansas, 2019 Every flash flood warning in 2019

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.