Alert archive / Oklahoma / Flash Flood Warnings in 2017

Flash Flood Warning 40, NWS Tulsa, OK

August 5, 2017Osage County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Aug 5, 2017, 11:48 PM CDT for Osage 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: Aug 5, 2017, 11:48 PM CDT (04:48 UTC)
Expired: Aug 6, 2017, 2:45 AM CDT
In force: 3 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

County Osage County, OK

The radar

The Tulsa radar (KINX), 117 km from the middle of the area, began a volume at 04:49 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

Norman, OK (KOUN), launched 00:00Z, 4.8 hours before the alert went out and 189 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: 415 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 2366 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 220 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

164 
WGUS54 KTSA 060448
FFWTSA
OKC113-060745-
/O.NEW.KTSA.FF.W.0040.170806T0448Z-170806T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tulsa OK
1148 PM CDT SAT AUG 5 2017

The National Weather Service in Tulsa has issued a

* Flash Flood Warning for...
  Northern Osage County in northeastern Oklahoma...

* Until 245 AM CDT

* At 1143 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to 4 inches of rain have 
  already fallen. Flash flooding is occurring or is imminent.

* Some locations that may experience flooding include...
  Pawhuska...                       Shidler...
  Burbank...                        Elgin...
  Grainola...                       Foraker...
  Bigheart...                       Pearsonia...
  Hulah...                          Southern Kaw Lake...
  Webb City...                      Wah Sha She State Park...
  Apperson...
  
Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area over the next hour or two.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3700 9600 3695 9600 3653 9643 3667 9707
      3670 9703 3668 9694 3675 9689 3674 9683
      3677 9682 3678 9675 3700 9675

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 7:32 PM CDT	Severe Thunderstorm Warning	TSA	Osage	58 min
Aug 5, 8:24 PM CDT	Special Weather Statement	TSA	Osage	36 min
Aug 5, 8:52 PM CDT	Special Weather Statement	TSA	Osage	38 min
Aug 5, 9:07 PM CDT	Special Weather Statement	TSA	Kay	68 min
Aug 5, 9:20 PM CDT	Areal Flood Advisory	TSA	Osage	5 hr
Aug 5, 10:10 PM CDT	Severe Thunderstorm Warning	TSA	Osage	35 min
Aug 5, 10:42 PM CDT	Severe Thunderstorm Warning	TSA	Osage	33 min
Aug 5, 11:00 PM CDT	Special Weather Statement	TSA	Washington	30 min
Aug 5, 11:13 PM CDT	Special Weather Statement	TSA	Osage	32 min
Aug 5, 11:52 PM CDT	Special Weather Statement	TSA	Osage	38 min
Aug 5, 11:59 PM CDT	Special Weather Statement	TSA	Osage	31 min
Aug 6, 12:18 AM CDT	Special Weather Statement	TSA	Osage, Pawnee, Rogers	27 min
Aug 6, 12:40 AM CDT	Areal Flood Advisory	TSA	Osage, Washington	4 hr
Aug 6, 12:44 AM CDT	Special Weather Statement	TSA	Creek, Tulsa	61 min
Aug 6, 12:57 AM CDT	Areal Flood Advisory	TSA	Osage, Tulsa, Washington	4 hr
Aug 6, 1:08 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Nowata, Osage, Rogers, Tulsa, Wagoner and 1 more	67 min
Aug 6, 1:25 AM CDT	Tornado Warning	TSA	Rogers, Tulsa, Wagoner	35 min
Aug 6, 1:29 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes, Rogers, Tulsa, Wagoner	46 min
Aug 6, 1:37 AM CDT	Tornado Warning	TSA	Nowata, Rogers	23 min
Aug 6, 1:42 AM CDT	Tornado Warning	TSA	Mayes, Rogers	21 min
Aug 6, 1:43 AM CDT	Tornado Warning	TSA	Mayes, Rogers, Wagoner	32 min
Aug 6, 1:56 AM CDT	Tornado Warning	TSA	Cherokee, Delaware, Mayes, Wagoner	17 min
Aug 6, 2:05 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Mayes, Muskogee, Sequoyah and 1 more	40 min
Aug 6, 2:21 AM CDT	Flash Flood Warning	TSA	Creek, Tulsa	6 hr
Aug 6, 2:45 AM CDT	Special Weather Statement	TSA	Adair, Cherokee	45 min
Aug 6, 2:53 AM CDT	Areal Flood Advisory	TSA	Muskogee, Okmulgee, Wagoner	4 hr
Aug 6, 3:21 AM CDT	Areal Flood Warning	TSA	Nowata, Osage, Washington	6 hr
Aug 6, 3:24 AM CDT	Special Weather Statement	TSA	Sequoyah	66 min
Aug 6, 3:45 AM CDT	Special Weather Statement	TSA	Haskell, McIntosh	60 min
Aug 6, 4:50 AM CDT	Special Weather Statement	TSA	Haskell, Latimer, LeFlore	40 min
Aug 6, 5:03 AM CDT	Areal Flood Advisory	TSA	Haskell, Latimer, LeFlore, McIntosh, Muskogee, Okmulgee and 2 more	3 hr
Aug 6, 5:27 AM CDT	Special Weather Statement	TSA	LeFlore	48 min
Aug 6, 8:14 AM CDT	Areal Flood Warning	TSA	Creek, Tulsa	24 hr
Aug 6, 8:25 AM CDT	Areal Flood Advisory	TSA	Haskell, Latimer, LeFlore	3 hr
Aug 6, 8:32 AM CDT	Flash Flood Warning	TSA	Haskell, Latimer, LeFlore	4 hr
Aug 6, 8:46 AM CDT	Areal Flood Advisory	TSA	Choctaw, Latimer, LeFlore, Pittsburg, Pushmataha	4 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.