Alert archive / Oklahoma / Flash Flood Warnings in 2021

Flash Flood Warning 50, NWS Tulsa, OK

July 17, 2021Washington County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Jul 17, 2021, 7:41 AM CDT for Washington County, Oklahoma. 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: Jul 17, 2021, 7:41 AM CDT (12:41 UTC)
Expired: Jul 17, 2021, 10:45 AM CDT
In force: 3 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

County Washington County, OK

The radar

The Tulsa radar (KINX), 63 km from the middle of the area, began a volume at 12:42 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, 0.7 hours before the alert went out and 191 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: 1277 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 784 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: -1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

742 
WGUS54 KTSA 171241
FFWTSA
OKC147-171545-
/O.NEW.KTSA.FF.W.0050.210717T1241Z-210717T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tulsa OK
741 AM CDT Sat Jul 17 2021

The National Weather Service in Tulsa has issued a

* Flash Flood Warning for...
  Southern Washington County in northeastern Oklahoma...

* Until 1045 AM CDT.

* At 741 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 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...
  Bartlesville...                    Ramona...
  Ochelata...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3679 9600 3671 9581 3651 9581 3651 9600

FLASH FLOOD...RADAR INDICATED

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 9:44 PM CDT	Special Weather Statement	TSA	Osage	46 min
Jul 17, 12:29 AM CDT	Areal Flood Advisory	TSA	Craig, Delaware, Mayes	4 hr
Jul 17, 1:02 AM CDT	Flash Flood Warning	TSA	Delaware	3 hr
Jul 17, 1:10 AM CDT	Areal Flood Advisory	TSA	Osage	3 hr
Jul 17, 1:25 AM CDT	Special Weather Statement	TSA	Osage	35 min
Jul 17, 1:49 AM CDT	Special Weather Statement	TSA	Mayes	26 min
Jul 17, 2:09 AM CDT	Areal Flood Advisory	TSA	Delaware, Mayes	3 hr
Jul 17, 2:20 AM CDT	Flash Flood Warning	TSA	Delaware, Mayes	3 hr
Jul 17, 2:22 AM CDT	Special Weather Statement	TSA	Mayes	23 min
Jul 17, 2:49 AM CDT	Special Weather Statement	TSA	Mayes	26 min
Jul 17, 3:16 AM CDT	Special Weather Statement	TSA	Mayes	29 min
Jul 17, 3:18 AM CDT	Flash Flood Watch	TSA	Adair, Cherokee, Craig, Creek, Delaware, Haskell and 10 more	39 hr
Jul 17, 3:33 AM CDT	Areal Flood Advisory	TSA	Mayes	117 min
Jul 17, 3:42 AM CDT	Special Weather Statement	TSA	Mayes	18 min
Jul 17, 4:10 AM CDT	Areal Flood Advisory	TSA	Craig, Mayes, Nowata, Rogers	3 hr
Jul 17, 4:28 AM CDT	Special Weather Statement	TSA	Craig	32 min
Jul 17, 4:40 AM CDT	Flash Flood Warning	TSA	Craig	2 hr
Jul 17, 5:32 AM CDT	Areal Flood Warning	TSA	Delaware, Mayes	3 hr
Jul 17, 5:41 AM CDT	Areal Flood Advisory	TSA	Nowata, Rogers	3 hr
Jul 17, 6:12 AM CDT	Flash Flood Warning	TSA	Rogers	3 hr
Jul 17, 6:17 AM CDT	Areal Flood Advisory	TSA	Tulsa, Washington	118 min
Jul 17, 6:49 AM CDT	Areal Flood Warning	TSA	Craig	3 hr
Jul 17, 7:17 AM CDT	Areal Flood Advisory	TSA	Washington	118 min
Jul 17, 9:09 AM CDT	Areal Flood Warning	TSA	Rogers	3 hr
Jul 17, 10:44 AM CDT	Areal Flood Warning	TSA	Washington	2 hr
Jul 17, 3:10 PM CDT	Special Weather Statement	TSA	Tulsa	35 min
Jul 17, 3:15 PM CDT	Areal Flood Advisory	TSA	Tulsa, Wagoner	2 hr
Jul 17, 3:35 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa, Wagoner	25 min
Jul 17, 4:03 PM CDT	Special Weather Statement	TSA	Wagoner	42 min
Jul 17, 4:49 PM CDT	Special Weather Statement	TSA	Muskogee	41 min
Jul 17, 4:51 PM CDT	Special Weather Statement	TSA	Creek	39 min
Jul 17, 4:51 PM CDT	Special Weather Statement	TSA	Creek	39 min
Jul 17, 5:04 PM CDT	Special Weather Statement	TSA	LeFlore	41 min
Jul 17, 5:20 PM CDT	Areal Flood Advisory	TSA	Latimer, Pittsburg	115 min
Jul 17, 5:55 PM CDT	Special Weather Statement	TSA	Cherokee	50 min
Jul 17, 6:15 PM CDT	Areal Flood Advisory	TSA	Adair, Delaware	2 hr
Jul 17, 6:48 PM CDT	Special Weather Statement	TSA	Adair	42 min
Jul 17, 6:58 PM CDT	Special Weather Statement	TSA	Osage	62 min

Nearby

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.