Alert archive / Oklahoma / Flash Flood Watches in 2019

Flash Flood Watch 1, NWS Tulsa, OK

April 29, 201922 counties in Oklahoma; 4 counties in Arkansas

NWS Tulsa, OK issued this flash flood watch at Apr 29, 2019, 3:40 AM CDT for 22 counties in Oklahoma; 4 counties in Arkansas. It took effect at Apr 30, 2019, 1:00 AM CDT. It was in force for 51 hr.

The area

The counties it named.

The facts

Issued: Apr 29, 2019, 3:40 AM CDT (08:40 UTC)
In effect from: Apr 30, 2019, 1:00 AM CDT
Expired: May 2, 2019, 4:21 AM CDT
In force: 51 hr
Issued by: NWS Tulsa, OK
Flood severity: None

All 26 counties

Benton County, AR, Carroll County, AR, Madison County, AR, Washington County, AR, Adair County, OK, Cherokee County, OK, Choctaw County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Ottawa County, OK, Pawnee County, OK, Pittsburg County, OK, Pushmataha County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 42 km from the middle of the area, began a volume at 08:43 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 00:00Z, 8.7 hours before the alert went out and 176 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: 1464 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 217 m²/s²
0-3 km storm-relative helicity: 303 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this flash flood watch went out at Apr 29, 3:14 AM CDT, 26 minutes earlier.

Area forecast discussion, Apr 29, 3:14 AM CDT, 26 minutes before

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Hazardous weather outlook, Apr 28, 8:52 PM CDT, 6 hours 48 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 29, 10:48 AM CDT	River Flood Watch	TSA	Creek	24 hr
Apr 29, 10:48 AM CDT	River Flood Watch	TSA	LeFlore	24 hr
Apr 29, 10:48 AM CDT	River Flood Watch	TSA	Osage	35 hr
Apr 29, 10:48 AM CDT	River Flood Watch	TSA	Osage, Tulsa	24 hr
Apr 29, 10:48 AM CDT	River Flood Watch	TSA	Tulsa	35 hr
Apr 29, 10:48 AM CDT	River Flood Watch	TSA	Washington	47 hr
Apr 29, 10:48 AM CDT	River Flood Watch	TSA	Rogers, Tulsa	24 hr
Apr 29, 10:48 AM CDT	River Flood Watch	TSA	Nowata	35 hr
Apr 29, 10:48 AM CDT	River Flood Watch	TSA	Ottawa	24 hr
Apr 29, 10:48 AM CDT	River Flood Watch	TSA	Ottawa	38 hr
Apr 29, 4:07 PM CDT	River Flood Watch	TSA	Adair, Delaware	18 hr
Apr 29, 4:07 PM CDT	River Flood Watch	TSA	Adair, Cherokee, Delaware	41 hr
Apr 29, 4:07 PM CDT	River Flood Watch	TSA	Cherokee	18 hr
Apr 29, 4:07 PM CDT	River Flood Watch	TSA	Cherokee, Delaware	18 hr

Nearby

Flash Flood Watches in Oklahoma, 2019 Flash Flood Watches in Arkansas, 2019 Every flash flood watch in 2019

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.