Alert archive / Oklahoma / Flash Flood Watches in 2020

Flash Flood Watch 5, NWS Tulsa, OK

May 25, 202019 counties in Oklahoma; 4 counties in Arkansas

NWS Tulsa, OK issued this flash flood watch at May 25, 2020, 2:57 AM CDT for 19 counties in Oklahoma; 4 counties in Arkansas. It took effect at May 25, 2020, 1:00 PM CDT. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued: May 25, 2020, 2:57 AM CDT (07:57 UTC)
In effect from: May 25, 2020, 1:00 PM CDT
Expired: May 26, 2020, 3:52 AM CDT
In force: 15 hr
Issued by: NWS Tulsa, OK
Flood severity: None

All 23 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, Delaware County, OK, Haskell County, OK, Latimer County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Nowata County, OK, Okmulgee County, OK, Ottawa 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), 52 km from the middle of the area, began a volume at 07:59 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.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 8.0 hours before the alert went out and 352 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: 847 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1016 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 68 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 May 25, 12:55 AM CDT, 2 hours 2 minutes earlier.

Area forecast discussion, May 25, 12:55 AM CDT, 2 hours 2 minutes before

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Hazardous weather outlook, May 24, 10:44 PM CDT, 4 hours 13 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
May 25, 8:52 AM CDT	River Flood Advisory	TSA	Cherokee	3 days
May 25, 1:49 PM CDT	River Flood Advisory	TSA	Ottawa	3 days
May 25, 2:08 PM CDT	River Flood Advisory	TSA	Muskogee	7 hr
May 25, 3:28 PM CDT	Special Weather Statement	TSA	Haskell	32 min
May 25, 3:54 PM CDT	Special Weather Statement	TSA	Latimer	36 min
May 25, 4:04 PM CDT	Special Weather Statement	TSA	LeFlore	26 min
May 25, 4:28 PM CDT	Special Weather Statement	TSA	LeFlore	32 min
May 25, 4:49 PM CDT	Special Weather Statement	TSA	Haskell	26 min
May 25, 4:57 PM CDT	Special Weather Statement	TSA	LeFlore	33 min
May 25, 5:14 PM CDT	Special Weather Statement	TSA	Muskogee	31 min
May 25, 5:17 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Sequoyah	43 min
May 25, 5:22 PM CDT	Areal Flood Advisory	TSA	Haskell, Latimer, LeFlore	3 hr
May 25, 5:28 PM CDT	Special Weather Statement	TSA	Haskell	32 min
May 25, 5:34 PM CDT	Special Weather Statement	TSA	LeFlore	26 min
May 25, 5:48 PM CDT	Special Weather Statement	TSA	Sequoyah	27 min
May 25, 5:57 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Wagoner	48 min
May 25, 6:09 PM CDT	Special Weather Statement	TSA	Sequoyah	51 min
May 25, 6:18 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	19 min
May 25, 6:26 PM CDT	Tornado Warning	TSA	Cherokee, Mayes	49 min
May 25, 6:55 PM CDT	Special Weather Statement	TSA	Adair, Cherokee	35 min
May 24, 8:33 PM CDT	Special Weather Statement	TSA	Sebastian	42 min
May 25, 6:02 PM CDT	Tornado Warning	TSA	Sebastian	29 min
May 25, 6:41 PM CDT	Special Weather Statement	TSA	Crawford, Sebastian	34 min

Nearby

Flash Flood Watches in Oklahoma, 2020 Flash Flood Watches in Arkansas, 2020 Every flash flood watch in 2020

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.