Alert archive / Oklahoma / Flash Flood Warnings in 2017

Flash Flood Warning 30, NWS Tulsa, OK

May 19, 20175 counties in Oklahoma; Benton County, Arkansas

NWS Tulsa, OK issued this flash flood warning at May 19, 2017, 9:55 PM CDT for 5 counties in Oklahoma; Benton County, Arkansas. It was in force for 6 hr. 2 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: May 19, 2017, 9:55 PM CDT (02:55 UTC)
Expired: May 20, 2017, 4:00 AM CDT
In force: 6 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

Counties Benton County, AR, Adair County, OK, Cherokee County, OK, Delaware County, OK, Muskogee County, OK, Sequoyah County, OK

The radar

The Tulsa radar (KINX), 82 km from the middle of the area, began a volume at 02:59 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 19, 10:30 PM CDT	FLASH FLOOD	Tahlequah, OK	EMERGENCY MANAGEMENT AND STREET DEPARTMENT DEPLOYING BARRIERS ACROSS TOWN DUE TO STREET FLOODING.
May 19, 11:57 PM CDT	FLASH FLOOD	6 Ne Gore, OK	HIGHWAY 10A NORTH OF GORE 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 00:00Z, 2.9 hours before the alert went out and 125 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: 1427 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: -186 m²/s²
0-3 km storm-relative helicity: -113 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

295 
WGUS54 KTSA 200255
FFWTSA
ARC007-OKC001-021-041-101-135-200900-
/O.NEW.KTSA.FF.W.0030.170520T0255Z-170520T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tulsa OK
955 PM CDT FRI MAY 19 2017

The National Weather Service in Tulsa has issued a

* Flash Flood Warning for...
  Western Benton County in northwestern Arkansas...
  Southeastern Delaware County in northeastern Oklahoma...
  Northwestern Sequoyah County in east central Oklahoma...
  Northern Adair County in northeastern Oklahoma...
  Cherokee County in east central Oklahoma...
  Eastern Muskogee County in east central Oklahoma...

* Until 400 AM CDT Saturday

* At 955 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. 1 to 3 inches of rain have 
  fallen. Flash flooding is expected to begin shortly.

* Some locations that may experience flooding include...
  Tahlequah...                      Siloam Springs...
  Gentry...                         Gravette...
  Decatur...                        Westville...
  Gore...                           West Siloam Springs...
  Colcord...                        Kansas...
  Webbers Falls...                  Watts...
  Oaks...                           Braggs...
  Springtown...                     Christie...
  Greenleaf State Park...           Pumpkin Center...
  Cookson...                        Hiwasse...

Additional rainfall amounts of 1 to 3 inches are possible in the 
warned area.

This includes Interstate 40 in Oklahoma between mile markers 282 and
291.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3610 9449 3610 9455 3603 9454 3565 9482
      3537 9521 3583 9520 3650 9460 3650 9419

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 7:06 PM CDT	Flash Flood Warning	TSA	Cherokee, Creek, Mayes, Muskogee, Okmulgee, Rogers and 2 more	7 hr
May 19, 7:13 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Okfuskee, Okmulgee	47 min
May 19, 7:16 PM CDT	Special Weather Statement	TSA	Delaware	29 min
May 19, 7:22 PM CDT	Special Weather Statement	TSA	Tulsa	23 min
May 19, 7:40 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes, Muskogee, Okmulgee, Rogers, Tulsa and 1 more	50 min
May 19, 8:02 PM CDT	Flash Flood Warning	TSA	Cherokee, Delaware, Mayes, Ottawa	6 hr
May 19, 8:14 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Craig, Delaware, Mayes, Ottawa	61 min
May 19, 8:28 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Okmulgee, Wagoner	47 min
May 19, 8:46 PM CDT	River Flood Warning	TSA	Adair, Delaware	35 hr
May 19, 8:46 PM CDT	River Flood Warning	TSA	Cherokee	56 hr
May 19, 9:00 PM CDT	Flash Flood Warning	TSA	McIntosh, Muskogee, Okfuskee, Okmulgee, Pittsburg	6 hr
May 19, 9:03 PM CDT	Special Weather Statement	TSA	McIntosh	57 min
May 19, 9:09 PM CDT	Special Weather Statement	TSA	Ottawa	51 min
May 19, 9:40 PM CDT	Special Weather Statement	TSA	Adair, Cherokee	50 min
May 19, 9:50 PM CDT	River Flood Warning	TSA	Okmulgee	5 days
May 19, 9:51 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Pittsburg	39 min
May 19, 10:28 PM CDT	Special Weather Statement	TSA	Pittsburg	32 min
May 19, 10:39 PM CDT	Special Weather Statement	TSA	Adair	36 min
May 19, 11:01 PM CDT	Flash Flood Warning	TSA	Haskell, Latimer, LeFlore, McIntosh, Muskogee, Pittsburg and 1 more	6 hr
May 19, 11:03 PM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Sequoyah	6 hr
May 19, 11:06 PM CDT	Severe Thunderstorm Warning	TSA	Adair	23 min
May 20, 12:47 AM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	43 min
May 20, 1:47 AM CDT	Special Weather Statement	TSA	Choctaw, Pushmataha	58 min
May 20, 1:51 AM CDT	Areal Flood Warning	TSA	Cherokee, Creek, Delaware, Mayes, Muskogee, Okfuskee and 5 more	18 hr
May 20, 2:20 AM CDT	Special Weather Statement	TSA	Latimer	55 min
May 20, 2:48 AM CDT	Special Weather Statement	TSA	LeFlore	57 min
May 20, 3:09 AM CDT	River Flood Advisory	TSA	Adair, Cherokee, Delaware	36 hr
May 20, 4:13 AM CDT	River Flood Warning	TSA	LeFlore	54 hr
May 20, 4:19 AM CDT	Flash Flood Warning	TSA	LeFlore, Pushmataha	4 hr
May 20, 8:55 AM CDT	Areal Flood Warning	TSA	Adair, Cherokee, Delaware, Haskell, Latimer, LeFlore and 3 more	36 hr
May 20, 8:58 AM CDT	River Flood Warning	TSA	Ottawa	46 hr
May 20, 8:58 AM CDT	River Flood Warning	TSA	Ottawa	45 hr
May 20, 9:30 AM CDT	River Flood Warning	TSA	Creek	17 hr
May 20, 9:30 AM CDT	River Flood Warning	TSA	Rogers, Tulsa	16 hr
May 20, 9:41 AM CDT	River Flood Warning	TSA	Adair, Cherokee, Delaware	37 hr
May 20, 10:07 AM CDT	River Flood Warning	TSA	LeFlore	19 hr
May 20, 10:07 AM CDT	River Flood Warning	TSA	Sequoyah	18 hr
May 20, 2:39 PM CDT	River Flood Advisory	TSA	Cherokee, Delaware	12 hr
May 19, 8:49 PM CDT	Severe Thunderstorm Warning	TSA	Benton	56 min
May 19, 11:21 PM CDT	Special Weather Statement	TSA	Franklin	24 min
May 19, 11:28 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Madison, Washington	28 min
May 20, 12:24 AM CDT	Special Weather Statement	TSA	Madison	36 min
May 20, 4:15 AM CDT	River Flood Advisory	TSA	Franklin, Johnson, Logan	36 hr
May 20, 4:15 AM CDT	River Flood Advisory	TSA	Crawford, Franklin	36 hr
May 20, 9:47 AM CDT	River Flood Warning	TSA	Crawford, Sebastian	3 days
May 20, 10:07 AM CDT	River Flood Warning	TSA	Franklin, Johnson, Logan	3 days

Nearby

Flash Flood Warnings in Oklahoma, 2017 Flash Flood Warnings in Arkansas, 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.