Alert archive / Oklahoma / Flash Flood Watches in 2010

Flash Flood Watch 1, NWS Tulsa, OK

May 19, 201022 counties in Oklahoma; 4 counties in Arkansas

NWS Tulsa, OK issued this flash flood watch at May 19, 2010, 2:33 AM CDT for 22 counties in Oklahoma; 4 counties in Arkansas. It took effect at May 19, 2010, 1:00 PM CDT. It was in force for 30 hr.

The area

The counties it named.

The facts

Issued: May 19, 2010, 2:33 AM CDT (07:33 UTC)
In effect from: May 19, 2010, 1:00 PM CDT
Expired: May 20, 2010, 7:00 PM CDT
In force: 30 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 07:37 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

Lamont, OK (KLMN), launched 00:00Z, 7.6 hours before the alert went out and 214 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: 1300 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 18, 11:51 PM CDT, 2 hours 42 minutes earlier.

Area forecast discussion, May 18, 11:51 PM CDT, 2 hours 42 minutes before

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Hazardous weather outlook, May 18, 4:55 PM CDT, 9 hours 38 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 19, 6:41 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	49 min
May 19, 7:24 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Nowata, Osage, Pawnee, Tulsa, Washington	51 min
May 19, 8:10 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa, Washington	65 min
May 19, 8:30 AM CDT	Areal Flood Advisory	TSA	Creek, Nowata, Osage, Pawnee, Rogers, Tulsa and 1 more	90 min
May 19, 8:35 AM CDT	Special Weather Statement	TSA	Nowata, Rogers	40 min
May 19, 9:02 AM CDT	Special Weather Statement	TSA	Craig, Mayes	58 min
May 19, 9:11 AM CDT	Special Weather Statement	TSA	Wagoner	49 min
May 19, 9:19 AM CDT	Areal Flood Advisory	TSA	Wagoner	116 min
May 19, 9:35 AM CDT	River Flood Watch	TSA	Adair	23 hr
May 19, 9:35 AM CDT	River Flood Watch	TSA	Cherokee	23 hr
May 19, 9:35 AM CDT	River Flood Watch	TSA	LeFlore	23 hr
May 19, 9:44 AM CDT	Areal Flood Advisory	TSA	Craig, Delaware, Mayes, Nowata, Ottawa, Rogers	91 min
May 19, 5:01 PM CDT	Special Weather Statement	TSA	Okfuskee	29 min
May 19, 5:08 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee, Okmulgee	47 min
May 19, 6:10 PM CDT	Special Weather Statement	TSA	Okmulgee	35 min
May 19, 6:13 PM CDT	Special Weather Statement	TSA	Creek	32 min
May 19, 6:24 PM CDT	Tornado Warning	TSA	Creek, Okfuskee	66 min
May 19, 6:52 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Pawnee	53 min
May 19, 6:56 PM CDT	Tornado Warning	TSA	Latimer, LeFlore, Pushmataha	54 min

Nearby

Flash Flood Watches in Oklahoma, 2010 Flash Flood Watches in Arkansas, 2010 Every flash flood watch in 2010

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.