Alert archive / Oklahoma / Flash Flood Warnings in 2017

Flash Flood Warning 3, NWS Tulsa, OK

April 21, 20174 counties in Oklahoma

NWS Tulsa, OK issued this flash flood warning at Apr 21, 2017, 11:53 AM CDT for 4 counties in Oklahoma. It was in force for 3 hr. 5 reports 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: Apr 21, 2017, 11:53 AM CDT (16:53 UTC)
Expired: Apr 21, 2017, 2:45 PM CDT
In force: 3 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

Counties Creek County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 33 km from the middle of the area, began a volume at 16:52 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
Apr 21, 11:53 AM CDT	FLASH FLOOD	Tulsa, OK	LOCAL MEDIA REPORTING HIGH WATER NEAR 31ST AND YALE, AND NEAR 49TH AND MEMORIAL.
Apr 21, 12:45 PM CDT	HEAVY RAIN 2.54	2 Ese Sapulpa, OK	MESONET STATION HLNO2, 1 ESE SAPULPA.
Apr 21, 1:20 PM CDT	FLASH FLOOD	Bixby, OK	ROADWAY AT 131ST BETWEEN MINGO AND JUST EAST OF MEMORIAL CLOSED DUE TO FLOODING.
Apr 21, 1:20 PM CDT	FLASH FLOOD	Jenks, OK	ROADWAY CLOSED AT 81ST AND ELWOOD DUE TO FLOODING.
Apr 21, 2:55 PM CDT	HEAVY RAIN 2.68	3 S Tulsa, OK	COCORAHS STATION OK-TL-49, 2 S TULSA.

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, 4.9 hours before the alert went out and 208 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: 637 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: -171 m²/s²
0-3 km storm-relative helicity: -150 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

409 
WGUS54 KTSA 211653
FFWTSA
OKC037-131-143-145-211945-
/O.NEW.KTSA.FF.W.0003.170421T1653Z-170421T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tulsa OK
1153 AM CDT FRI APR 21 2017

The National Weather Service in Tulsa has issued a

* Flash Flood Warning for...
  Southwestern Rogers County in northeastern Oklahoma...
  Northeastern Creek County in northeastern Oklahoma...
  Northwestern Wagoner County in northeastern Oklahoma...
  Southern Tulsa County in northeastern Oklahoma...

* Until 245 PM CDT

* At 1148 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. 1-2 inches of rain has fallen 
  across the warning area...and excessive runoff will result in 
  flash flooding over the next few hours.  

* Some locations that may experience flooding include...
  Tulsa...                          Broken Arrow...
  Sand Springs...                   Claremore...
  Owasso...                         Bixby...
  Sapulpa...                        Jenks...
  Glenpool...                       Coweta...
  Catoosa...                        Verdigris...
  Inola...                          Kiefer...
  Mounds...                         Oneta...
  Gray...                           

Additional rainfall amounts of up to an inch will be possible.. 
While rainfall rates are expected to taper off this 
afternoon...runoff from current and previous rainfall will result in 
ongoing runoff across the warned area. 

Additionally...there  have been several reports of stalled vehicles 
in high water. Do not attempt to cross waters of unknown depth.

This includes Interstate 44 between mile markers 207 and 247.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3634 9563 3606 9552 3586 9607 3586 9619
      3609 9620 3616 9603 3616 9600 3618 9600

$$

2 follow-up statements

137 
WGUS74 KTSA 211839
FFSTSA

Flash Flood Statement
National Weather Service Tulsa OK
139 PM CDT FRI APR 21 2017

OKC037-131-143-145-211945-
/O.CON.KTSA.FF.W.0003.000000T0000Z-170421T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Rogers OK-Creek OK-Wagoner OK-Tulsa OK-
139 PM CDT FRI APR 21 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 PM CDT FOR
SOUTHWESTERN ROGERS...NORTHEASTERN CREEK...NORTHWESTERN WAGONER AND
SOUTHERN TULSA COUNTIES...

At 133 PM CDT, Doppler radar indicated the the highest areal 
coverage of rain that prompted the flash flood warning has moved 
east. However...scattered thunderstorms to the west will bring 
additional rainfall to the warned area...and runoff from this 
additional rainfall will remain ongoing...thus flooding will 
continue across the warned area...especially low lying areas and 
locations where water is slow to recede. 

Some locations that may experience flooding include...
Tulsa...                          Broken Arrow...
Sand Springs...                   Claremore...
Owasso...                         Bixby...
Sapulpa...                        Jenks...
Glenpool...                       Coweta...
Catoosa...                        Verdigris...
Inola...                          Kiefer...
Mounds...                         Oneta...
Gray...                           

This includes Interstate 44 between mile markers 207 and 247.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3634 9563 3606 9552 3586 9607 3586 9619
      3609 9620 3616 9603 3616 9600 3618 9600

$$

830 
WGUS74 KTSA 211946
FFSTSA

Flash Flood Statement
National Weather Service Tulsa OK
246 PM CDT FRI APR 21 2017

OKC037-131-143-145-211953-
/O.EXP.KTSA.FF.W.0003.000000T0000Z-170421T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Rogers OK-Creek OK-Wagoner OK-Tulsa OK-
246 PM CDT FRI APR 21 2017

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN ROGERS...NORTHEASTERN
CREEK...NORTHWESTERN WAGONER AND SOUTHERN TULSA COUNTIES WILL EXPIRE
AT 245 PM CDT...

The heavy rain has ended. While scattered thunderstorms will remain 
possible this afternoon...lower areal coverage and a fast storm 
motion will limit additional rainfall amount and preclude additional 
flooding. Please continue to heed signs pertaining to roads that may 
remain closed. 


LAT...LON 3634 9563 3606 9552 3586 9607 3586 9619
      3609 9620 3616 9603 3616 9600 3618 9600

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 21, 1:50 AM CDT	River Flood Warning	TSA	Ottawa	3 days
Apr 21, 1:53 AM CDT	River Flood Warning	TSA	Adair, Delaware	47 hr
Apr 21, 1:53 AM CDT	River Flood Warning	TSA	Cherokee	70 hr
Apr 21, 1:58 AM CDT	River Flood Advisory	TSA	Adair, Cherokee, Delaware	36 hr
Apr 21, 3:29 AM CDT	Special Weather Statement	TSA	Creek	31 min
Apr 21, 3:44 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	46 min
Apr 21, 4:03 AM CDT	Special Weather Statement	TSA	Okfuskee	42 min
Apr 21, 4:16 AM CDT	Special Weather Statement	TSA	Okmulgee	29 min
Apr 21, 4:42 AM CDT	Special Weather Statement	TSA	McIntosh, Muskogee, Okmulgee	48 min
Apr 21, 5:35 AM CDT	Special Weather Statement	TSA	Muskogee	40 min
Apr 21, 5:49 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Haskell, Muskogee, Sequoyah	41 min
Apr 21, 6:22 AM CDT	Severe Thunderstorm Warning	TSA	Adair, LeFlore, Sequoyah	38 min
Apr 21, 8:43 AM CDT	River Flood Warning	TSA	Osage, Tulsa	42 hr
Apr 21, 8:43 AM CDT	River Flood Warning	TSA	Rogers, Tulsa	54 hr
Apr 21, 8:52 AM CDT	River Flood Warning	TSA	Adair, Cherokee, Delaware	56 hr
Apr 21, 9:01 AM CDT	River Flood Advisory	TSA	Cherokee, Delaware	34 hr
Apr 21, 9:01 AM CDT	River Flood Advisory	TSA	Tulsa	52 hr
Apr 21, 9:30 AM CDT	Special Weather Statement	TSA	Okfuskee	30 min
Apr 21, 9:51 AM CDT	Areal Flood Advisory	TSA	Ottawa	3 hr
Apr 21, 9:57 AM CDT	Areal Flood Advisory	TSA	Creek, Rogers, Tulsa, Wagoner	3 hr
Apr 21, 10:08 AM CDT	Severe Thunderstorm Warning	TSA	Okfuskee, Okmulgee	67 min
Apr 21, 10:10 AM CDT	Special Weather Statement	TSA	Creek	65 min
Apr 21, 10:23 AM CDT	Special Weather Statement	TSA	Okmulgee	37 min
Apr 21, 11:00 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Okfuskee, Okmulgee, Pittsburg	45 min
Apr 21, 11:03 AM CDT	Special Weather Statement	TSA	Tulsa, Wagoner	42 min
Apr 21, 11:18 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes, Muskogee, Okmulgee, Rogers, Tulsa and 1 more	42 min
Apr 21, 11:39 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Haskell, Latimer, McIntosh, Muskogee, Pittsburg and 1 more	51 min
Apr 21, 11:51 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Delaware, Mayes, Muskogee, Wagoner	39 min
Apr 21, 12:07 PM CDT	Areal Flood Advisory	TSA	Cherokee	113 min
Apr 21, 12:10 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, Pushmataha	35 min
Apr 21, 12:16 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Haskell, LeFlore, Sequoyah	44 min
Apr 21, 12:23 PM CDT	Areal Flood Advisory	TSA	Adair	112 min
Apr 21, 12:38 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, LeFlore, Pushmataha, Sequoyah	52 min
Apr 21, 12:50 PM CDT	Areal Flood Advisory	TSA	Delaware	3 hr
Apr 21, 1:50 PM CDT	River Flood Warning	TSA	Osage	14 hr
Apr 21, 2:03 PM CDT	River Flood Warning	TSA	Ottawa	58 hr
Apr 21, 2:13 PM CDT	Special Weather Statement	TSA	Creek	32 min
Apr 21, 2:15 PM CDT	River Flood Warning	TSA	Creek	24 hr
Apr 21, 2:19 PM CDT	River Flood Warning	TSA	Tulsa	47 hr
Apr 21, 2:23 PM CDT	River Flood Warning	TSA	Washington	37 hr
Apr 21, 2:41 PM CDT	Special Weather Statement	TSA	Creek	34 min
Apr 21, 2:49 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	41 min
Apr 21, 2:53 PM CDT	Special Weather Statement	TSA	Creek	37 min
Apr 21, 3:20 PM CDT	Special Weather Statement	TSA	Wagoner	40 min
Apr 21, 3:27 PM CDT	Areal Flood Advisory	TSA	Creek, Tulsa	3 hr
Apr 21, 3:57 PM CDT	Areal Flood Advisory	TSA	Mayes, Rogers, Wagoner	5 hr
Apr 21, 4:38 PM CDT	Special Weather Statement	TSA	Muskogee	37 min
Apr 21, 5:19 PM CDT	Special Weather Statement	TSA	Muskogee	41 min
Apr 21, 5:35 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	55 min
Apr 21, 5:47 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee	43 min
Apr 21, 6:21 PM CDT	Special Weather Statement	TSA	Pittsburg	39 min
Apr 21, 6:30 PM CDT	Areal Flood Advisory	TSA	Creek, Tulsa	2 hr
Apr 21, 6:38 PM CDT	Special Weather Statement	TSA	Haskell	37 min
Apr 21, 6:56 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw	49 min
Apr 21, 6:57 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	48 min

Nearby

Flash Flood Warnings in Oklahoma, 2017 Every flash flood warning in 2017

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.