Alert archive / Oklahoma / Flash Flood Warnings in 2020

Flash Flood Warning 13, NWS Tulsa, OK

May 15, 2020Haskell County, LeFlore County, Sequoyah County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at May 15, 2020, 1:12 PM CDT for Haskell County, LeFlore County, Sequoyah County, Oklahoma. It was in force for 4 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 15, 2020, 1:12 PM CDT (18:12 UTC)
Expired: May 15, 2020, 5:15 PM CDT
In force: 4 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

Counties Haskell County, OK, LeFlore County, OK, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 24 km from the middle of the area, began a volume at 18:12 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.

What was reported inside it

Time	Report	Where	Remark
May 15, 1:34 PM CDT	FLASH FLOOD	Cowlington, OK	HIGHWAY 59 NEAR COWLINGTON FLOODED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 6.2 hours before the alert went out and 194 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1018 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: -234 m²/s²
0-3 km storm-relative helicity: -297 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

108 
WGUS54 KTSA 151812
FFWTSA
OKC061-079-135-152215-
/O.NEW.KTSA.FF.W.0013.200515T1812Z-200515T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tulsa OK
112 PM CDT Fri May 15 2020

The National Weather Service in Tulsa has issued a

* Flash Flood Warning for...
  Southeastern Haskell County in southeastern Oklahoma...
  Eastern Sequoyah County in east central Oklahoma...
  Northern Le Flore County in southeastern Oklahoma...

* Until 515 PM CDT.

* At 111 PM CDT, Doppler radar indicated a slow moving band of 
  thunderstorms producing heavy rain across the warned area. Flash 
  flooding is expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  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 may experience flooding include...
  Fort Smith...                     Sallisaw...
  Poteau...                         Pocola...
  Muldrow...                        Roland...
  Spiro...                          Arkoma...
  Panama...                         Bonanza...
  Bokoshe...                        Gans...
  Cameron...                        Moffett...
  Brushy...                         Short...
  Shady Point...                    Rock Island...
  Cowlington...                     Scullyville...

This includes Interstate 40 in Oklahoma between mile markers 306 and
328.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3505 9444 3506 9494 3519 9493 3564 9473
      3564 9448 3539 9443

FLASH FLOOD...RADAR INDICATED

$$

Lacy

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 3:16 AM CDT	Special Weather Statement	TSA	Ottawa	59 min
May 15, 3:23 AM CDT	Special Weather Statement	TSA	Nowata	67 min
May 15, 3:59 AM CDT	Special Weather Statement	TSA	Craig, Nowata, Ottawa	46 min
May 15, 4:49 AM CDT	Special Weather Statement	TSA	Craig, Delaware, Nowata, Ottawa, Washington	41 min
May 15, 5:03 AM CDT	Special Weather Statement	TSA	Adair, Cherokee, Mayes, Rogers	42 min
May 15, 5:34 AM CDT	Special Weather Statement	TSA	Nowata	26 min
May 15, 5:41 AM CDT	Areal Flood Advisory	TSA	Craig, Nowata, Washington	4 hr
May 15, 5:44 AM CDT	Special Weather Statement	TSA	Adair, Cherokee, Mayes	46 min
May 15, 6:08 AM CDT	Special Weather Statement	TSA	Tulsa	37 min
May 15, 6:16 AM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa, Wagoner	44 min
May 15, 7:00 AM CDT	Special Weather Statement	TSA	Tulsa	30 min
May 15, 7:02 AM CDT	Special Weather Statement	TSA	Wagoner	28 min
May 15, 7:04 AM CDT	Areal Flood Advisory	TSA	Rogers, Tulsa, Wagoner	3 hr
May 15, 7:08 AM CDT	Special Weather Statement	TSA	Nowata, Washington	37 min
May 15, 8:11 AM CDT	Special Weather Statement	TSA	Wagoner	34 min
May 15, 8:23 AM CDT	Special Weather Statement	TSA	Osage	52 min
May 15, 8:53 AM CDT	Special Weather Statement	TSA	Muskogee	37 min
May 15, 9:05 AM CDT	Areal Flood Advisory	TSA	Cherokee, Muskogee, Wagoner	3 hr
May 15, 9:10 AM CDT	Special Weather Statement	TSA	Craig	35 min
May 15, 9:11 AM CDT	Special Weather Statement	TSA	Muskogee	34 min
May 15, 9:16 AM CDT	Flash Flood Warning	TSA	Craig, Nowata	4 hr
May 15, 9:24 AM CDT	Areal Flood Advisory	TSA	Rogers, Wagoner	3 hr
May 15, 9:27 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Muskogee, Sequoyah	48 min
May 15, 9:37 AM CDT	Flash Flood Warning	TSA	Muskogee, Wagoner	3 hr
May 15, 9:40 AM CDT	Special Weather Statement	TSA	Wagoner	35 min
May 15, 9:55 AM CDT	Areal Flood Advisory	TSA	Washington	3 hr
May 15, 10:04 AM CDT	Special Weather Statement	TSA	McIntosh	26 min
May 15, 10:10 AM CDT	Special Weather Statement	TSA	Muskogee	50 min
May 15, 10:13 AM CDT	Special Weather Statement	TSA	Tulsa	32 min
May 15, 10:26 AM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	49 min
May 15, 10:30 AM CDT	Areal Flood Advisory	TSA	McIntosh, Muskogee	3 hr
May 15, 10:32 AM CDT	Special Weather Statement	TSA	McIntosh	28 min
May 15, 10:34 AM CDT	Areal Flood Advisory	TSA	Tulsa	3 hr
May 15, 10:40 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, Muskogee, Sequoyah	50 min
May 15, 10:43 AM CDT	Special Weather Statement	TSA	Tulsa	32 min
May 15, 10:45 AM CDT	Special Weather Statement	TSA	Okmulgee	30 min
May 15, 10:51 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh	39 min
May 15, 11:02 AM CDT	Flash Flood Warning	TSA	McIntosh, Muskogee, Okmulgee	4 hr
May 15, 11:07 AM CDT	Areal Flood Advisory	TSA	Cherokee, Craig, Delaware, Mayes, Rogers, Wagoner	3 hr
May 15, 11:27 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, LeFlore, Sequoyah	48 min
May 15, 11:45 AM CDT	Areal Flood Advisory	TSA	Okfuskee	3 hr
May 15, 12:02 PM CDT	Special Weather Statement	TSA	McIntosh	28 min
May 15, 12:07 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	38 min
May 15, 12:12 PM CDT	Special Weather Statement	TSA	Haskell	33 min
May 15, 12:23 PM CDT	Flash Flood Warning	TSA	Haskell, Sequoyah	3 hr
May 15, 12:36 PM CDT	Special Weather Statement	TSA	Haskell, Pittsburg	39 min
May 15, 12:44 PM CDT	Special Weather Statement	TSA	Sequoyah	31 min
May 15, 12:52 PM CDT	Areal Flood Warning	TSA	Mayes, Muskogee, Rogers, Wagoner	9 hr
May 15, 1:01 PM CDT	Areal Flood Warning	TSA	Craig, Nowata	9 hr
May 15, 1:05 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	40 min
May 15, 1:19 PM CDT	Special Weather Statement	TSA	Latimer	26 min
May 15, 1:25 PM CDT	Special Weather Statement	TSA	Haskell	35 min
May 15, 1:40 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	50 min
May 15, 1:43 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, LeFlore	47 min
May 15, 1:52 PM CDT	Flash Flood Warning	TSA	Latimer, LeFlore, Pittsburg	4 hr
May 15, 2:11 PM CDT	River Flood Warning	TSA	Nowata	62 hr
May 15, 2:19 PM CDT	Special Weather Statement	TSA	LeFlore	26 min
May 15, 2:22 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	53 min
May 15, 2:49 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	41 min
May 15, 2:55 PM CDT	Areal Flood Warning	TSA	McIntosh, Muskogee, Okmulgee	9 hr
May 15, 3:08 PM CDT	River Flood Advisory	TSA	Cherokee	6 hr
May 15, 3:11 PM CDT	Areal Flood Warning	TSA	Haskell, Sequoyah	9 hr
May 15, 3:30 PM CDT	Areal Flood Advisory	TSA	LeFlore, Pushmataha	2 hr
May 15, 4:40 PM CDT	Areal Flood Advisory	TSA	Choctaw	2 hr
May 15, 5:12 PM CDT	Areal Flood Warning	TSA	Haskell, LeFlore, Sequoyah	9 hr
May 15, 5:40 PM CDT	Areal Flood Warning	TSA	Latimer, LeFlore, Pittsburg	9 hr

Nearby

Flash Flood Warnings in Oklahoma, 2020 Every flash flood warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.